(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.QB = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
'use strict'

/**
 * "Shallow freezes" an object to render it immutable.
 * Uses `Object.freeze` if available,
 * otherwise the immutability is only in the type.
 *
 * Is used to create "enum like" objects.
 *
 * @template T
 * @param {T} object the object to freeze
 * @param {Pick<ObjectConstructor, 'freeze'> = Object} oc `Object` by default,
 * 				allows to inject custom object constructor for tests
 * @returns {Readonly<T>}
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
 */
function freeze(object, oc) {
	if (oc === undefined) {
		oc = Object
	}
	return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object
}

/**
 * Since we can not rely on `Object.assign` we provide a simplified version
 * that is sufficient for our needs.
 *
 * @param {Object} target
 * @param {Object | null | undefined} source
 *
 * @returns {Object} target
 * @throws TypeError if target is not an object
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
 * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign
 */
function assign(target, source) {
	if (target === null || typeof target !== 'object') {
		throw new TypeError('target is not an object')
	}
	for (var key in source) {
		if (Object.prototype.hasOwnProperty.call(source, key)) {
			target[key] = source[key]
		}
	}
	return target
}

/**
 * All mime types that are allowed as input to `DOMParser.parseFromString`
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN
 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec
 * @see DOMParser.prototype.parseFromString
 */
var MIME_TYPE = freeze({
	/**
	 * `text/html`, the only mime type that triggers treating an XML document as HTML.
	 *
	 * @see DOMParser.SupportedType.isHTML
	 * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
	 * @see https://en.wikipedia.org/wiki/HTML Wikipedia
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
	 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec
	 */
	HTML: 'text/html',

	/**
	 * Helper method to check a mime type if it indicates an HTML document
	 *
	 * @param {string} [value]
	 * @returns {boolean}
	 *
	 * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
	 * @see https://en.wikipedia.org/wiki/HTML Wikipedia
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
	 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring 	 */
	isHTML: function (value) {
		return value === MIME_TYPE.HTML
	},

	/**
	 * `application/xml`, the standard mime type for XML documents.
	 *
	 * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration
	 * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303
	 * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
	 */
	XML_APPLICATION: 'application/xml',

	/**
	 * `text/html`, an alias for `application/xml`.
	 *
	 * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303
	 * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration
	 * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
	 */
	XML_TEXT: 'text/xml',

	/**
	 * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,
	 * but is parsed as an XML document.
	 *
	 * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec
	 * @see https://en.wikipedia.org/wiki/XHTML Wikipedia
	 */
	XML_XHTML_APPLICATION: 'application/xhtml+xml',

	/**
	 * `image/svg+xml`,
	 *
	 * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration
	 * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1
	 * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia
	 */
	XML_SVG_IMAGE: 'image/svg+xml',
})

/**
 * Namespaces that are used in this code base.
 *
 * @see http://www.w3.org/TR/REC-xml-names
 */
var NAMESPACE = freeze({
	/**
	 * The XHTML namespace.
	 *
	 * @see http://www.w3.org/1999/xhtml
	 */
	HTML: 'http://www.w3.org/1999/xhtml',

	/**
	 * Checks if `uri` equals `NAMESPACE.HTML`.
	 *
	 * @param {string} [uri]
	 *
	 * @see NAMESPACE.HTML
	 */
	isHTML: function (uri) {
		return uri === NAMESPACE.HTML
	},

	/**
	 * The SVG namespace.
	 *
	 * @see http://www.w3.org/2000/svg
	 */
	SVG: 'http://www.w3.org/2000/svg',

	/**
	 * The `xml:` namespace.
	 *
	 * @see http://www.w3.org/XML/1998/namespace
	 */
	XML: 'http://www.w3.org/XML/1998/namespace',

	/**
	 * The `xmlns:` namespace
	 *
	 * @see https://www.w3.org/2000/xmlns/
	 */
	XMLNS: 'http://www.w3.org/2000/xmlns/',
})

exports.assign = assign;
exports.freeze = freeze;
exports.MIME_TYPE = MIME_TYPE;
exports.NAMESPACE = NAMESPACE;

},{}],2:[function(require,module,exports){
var conventions = require("./conventions");
var dom = require('./dom')
var entities = require('./entities');
var sax = require('./sax');

var DOMImplementation = dom.DOMImplementation;

var NAMESPACE = conventions.NAMESPACE;

var ParseError = sax.ParseError;
var XMLReader = sax.XMLReader;

/**
 * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:
 *
 * > XML parsed entities are often stored in computer files which,
 * > for editing convenience, are organized into lines.
 * > These lines are typically separated by some combination
 * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).
 * >
 * > To simplify the tasks of applications, the XML processor must behave
 * > as if it normalized all line breaks in external parsed entities (including the document entity)
 * > on input, before parsing, by translating all of the following to a single #xA character:
 * >
 * > 1. the two-character sequence #xD #xA
 * > 2. the two-character sequence #xD #x85
 * > 3. the single character #x85
 * > 4. the single character #x2028
 * > 5. any #xD character that is not immediately followed by #xA or #x85.
 *
 * @param {string} input
 * @returns {string}
 */
function normalizeLineEndings(input) {
	return input
		.replace(/\r[\n\u0085]/g, '\n')
		.replace(/[\r\u0085\u2028]/g, '\n')
}

/**
 * @typedef Locator
 * @property {number} [columnNumber]
 * @property {number} [lineNumber]
 */

/**
 * @typedef DOMParserOptions
 * @property {DOMHandler} [domBuilder]
 * @property {Function} [errorHandler]
 * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing
 * 						defaults to `normalizeLineEndings`
 * @property {Locator} [locator]
 * @property {Record<string, string>} [xmlns]
 *
 * @see normalizeLineEndings
 */

/**
 * The DOMParser interface provides the ability to parse XML or HTML source code
 * from a string into a DOM `Document`.
 *
 * _xmldom is different from the spec in that it allows an `options` parameter,
 * to override the default behavior._
 *
 * @param {DOMParserOptions} [options]
 * @constructor
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization
 */
function DOMParser(options){
	this.options = options ||{locator:{}};
}

DOMParser.prototype.parseFromString = function(source,mimeType){
	var options = this.options;
	var sax =  new XMLReader();
	var domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler
	var errorHandler = options.errorHandler;
	var locator = options.locator;
	var defaultNSMap = options.xmlns||{};
	var isHTML = /\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1;
  	var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;
	if(locator){
		domBuilder.setDocumentLocator(locator)
	}

	sax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);
	sax.domBuilder = options.domBuilder || domBuilder;
	if(isHTML){
		defaultNSMap[''] = NAMESPACE.HTML;
	}
	defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;
	var normalize = options.normalizeLineEndings || normalizeLineEndings;
	if (source && typeof source === 'string') {
		sax.parse(
			normalize(source),
			defaultNSMap,
			entityMap
		)
	} else {
		sax.errorHandler.error('invalid doc source')
	}
	return domBuilder.doc;
}
function buildErrorHandler(errorImpl,domBuilder,locator){
	if(!errorImpl){
		if(domBuilder instanceof DOMHandler){
			return domBuilder;
		}
		errorImpl = domBuilder ;
	}
	var errorHandler = {}
	var isCallback = errorImpl instanceof Function;
	locator = locator||{}
	function build(key){
		var fn = errorImpl[key];
		if(!fn && isCallback){
			fn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;
		}
		errorHandler[key] = fn && function(msg){
			fn('[xmldom '+key+']\t'+msg+_locator(locator));
		}||function(){};
	}
	build('warning');
	build('error');
	build('fatalError');
	return errorHandler;
}

//console.log('#\n\n\n\n\n\n\n####')
/**
 * +ContentHandler+ErrorHandler
 * +LexicalHandler+EntityResolver2
 * -DeclHandler-DTDHandler
 *
 * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler
 * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2
 * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html
 */
function DOMHandler() {
    this.cdata = false;
}
function position(locator,node){
	node.lineNumber = locator.lineNumber;
	node.columnNumber = locator.columnNumber;
}
/**
 * @see org.xml.sax.ContentHandler#startDocument
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
 */
DOMHandler.prototype = {
	startDocument : function() {
    	this.doc = new DOMImplementation().createDocument(null, null, null);
    	if (this.locator) {
        	this.doc.documentURI = this.locator.systemId;
    	}
	},
	startElement:function(namespaceURI, localName, qName, attrs) {
		var doc = this.doc;
	    var el = doc.createElementNS(namespaceURI, qName||localName);
	    var len = attrs.length;
	    appendElement(this, el);
	    this.currentElement = el;

		this.locator && position(this.locator,el)
	    for (var i = 0 ; i < len; i++) {
	        var namespaceURI = attrs.getURI(i);
	        var value = attrs.getValue(i);
	        var qName = attrs.getQName(i);
			var attr = doc.createAttributeNS(namespaceURI, qName);
			this.locator &&position(attrs.getLocator(i),attr);
			attr.value = attr.nodeValue = value;
			el.setAttributeNode(attr)
	    }
	},
	endElement:function(namespaceURI, localName, qName) {
		var current = this.currentElement
		var tagName = current.tagName;
		this.currentElement = current.parentNode;
	},
	startPrefixMapping:function(prefix, uri) {
	},
	endPrefixMapping:function(prefix) {
	},
	processingInstruction:function(target, data) {
	    var ins = this.doc.createProcessingInstruction(target, data);
	    this.locator && position(this.locator,ins)
	    appendElement(this, ins);
	},
	ignorableWhitespace:function(ch, start, length) {
	},
	characters:function(chars, start, length) {
		chars = _toString.apply(this,arguments)
		//console.log(chars)
		if(chars){
			if (this.cdata) {
				var charNode = this.doc.createCDATASection(chars);
			} else {
				var charNode = this.doc.createTextNode(chars);
			}
			if(this.currentElement){
				this.currentElement.appendChild(charNode);
			}else if(/^\s*$/.test(chars)){
				this.doc.appendChild(charNode);
				//process xml
			}
			this.locator && position(this.locator,charNode)
		}
	},
	skippedEntity:function(name) {
	},
	endDocument:function() {
		this.doc.normalize();
	},
	setDocumentLocator:function (locator) {
	    if(this.locator = locator){// && !('lineNumber' in locator)){
	    	locator.lineNumber = 0;
	    }
	},
	//LexicalHandler
	comment:function(chars, start, length) {
		chars = _toString.apply(this,arguments)
	    var comm = this.doc.createComment(chars);
	    this.locator && position(this.locator,comm)
	    appendElement(this, comm);
	},

	startCDATA:function() {
	    //used in characters() methods
	    this.cdata = true;
	},
	endCDATA:function() {
	    this.cdata = false;
	},

	startDTD:function(name, publicId, systemId) {
		var impl = this.doc.implementation;
	    if (impl && impl.createDocumentType) {
	        var dt = impl.createDocumentType(name, publicId, systemId);
	        this.locator && position(this.locator,dt)
	        appendElement(this, dt);
					this.doc.doctype = dt;
	    }
	},
	/**
	 * @see org.xml.sax.ErrorHandler
	 * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
	 */
	warning:function(error) {
		console.warn('[xmldom warning]\t'+error,_locator(this.locator));
	},
	error:function(error) {
		console.error('[xmldom error]\t'+error,_locator(this.locator));
	},
	fatalError:function(error) {
		throw new ParseError(error, this.locator);
	}
}
function _locator(l){
	if(l){
		return '\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'
	}
}
function _toString(chars,start,length){
	if(typeof chars == 'string'){
		return chars.substr(start,length)
	}else{//java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
		if(chars.length >= start+length || start){
			return new java.lang.String(chars,start,length)+'';
		}
		return chars;
	}
}

/*
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
 * used method of org.xml.sax.ext.LexicalHandler:
 *  #comment(chars, start, length)
 *  #startCDATA()
 *  #endCDATA()
 *  #startDTD(name, publicId, systemId)
 *
 *
 * IGNORED method of org.xml.sax.ext.LexicalHandler:
 *  #endDTD()
 *  #startEntity(name)
 *  #endEntity(name)
 *
 *
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
 * IGNORED method of org.xml.sax.ext.DeclHandler
 * 	#attributeDecl(eName, aName, type, mode, value)
 *  #elementDecl(name, model)
 *  #externalEntityDecl(name, publicId, systemId)
 *  #internalEntityDecl(name, value)
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
 * IGNORED method of org.xml.sax.EntityResolver2
 *  #resolveEntity(String name,String publicId,String baseURI,String systemId)
 *  #resolveEntity(publicId, systemId)
 *  #getExternalSubset(name, baseURI)
 * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
 * IGNORED method of org.xml.sax.DTDHandler
 *  #notationDecl(name, publicId, systemId) {};
 *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};
 */
"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,function(key){
	DOMHandler.prototype[key] = function(){return null}
})

/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
function appendElement (hander,node) {
    if (!hander.currentElement) {
        hander.doc.appendChild(node);
    } else {
        hander.currentElement.appendChild(node);
    }
}//appendChild and setAttributeNS are preformance key

exports.__DOMHandler = DOMHandler;
exports.normalizeLineEndings = normalizeLineEndings;
exports.DOMParser = DOMParser;

},{"./conventions":1,"./dom":3,"./entities":4,"./sax":6}],3:[function(require,module,exports){
var conventions = require("./conventions");

var NAMESPACE = conventions.NAMESPACE;

/**
 * A prerequisite for `[].filter`, to drop elements that are empty
 * @param {string} input
 * @returns {boolean}
 */
function notEmptyString (input) {
	return input !== ''
}
/**
 * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace
 * @see https://infra.spec.whatwg.org/#ascii-whitespace
 *
 * @param {string} input
 * @returns {string[]} (can be empty)
 */
function splitOnASCIIWhitespace(input) {
	// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE
	return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : []
}

/**
 * Adds element as a key to current if it is not already present.
 *
 * @param {Record<string, boolean | undefined>} current
 * @param {string} element
 * @returns {Record<string, boolean | undefined>}
 */
function orderedSetReducer (current, element) {
	if (!current.hasOwnProperty(element)) {
		current[element] = true;
	}
	return current;
}

/**
 * @see https://infra.spec.whatwg.org/#ordered-set
 * @param {string} input
 * @returns {string[]}
 */
function toOrderedSet(input) {
	if (!input) return [];
	var list = splitOnASCIIWhitespace(input);
	return Object.keys(list.reduce(orderedSetReducer, {}))
}

/**
 * Uses `list.indexOf` to implement something like `Array.prototype.includes`,
 * which we can not rely on being available.
 *
 * @param {any[]} list
 * @returns {function(any): boolean}
 */
function arrayIncludes (list) {
	return function(element) {
		return list && list.indexOf(element) !== -1;
	}
}

function copy(src,dest){
	for(var p in src){
		dest[p] = src[p];
	}
}

/**
^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));?
^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));?
 */
function _extends(Class,Super){
	var pt = Class.prototype;
	if(!(pt instanceof Super)){
		function t(){};
		t.prototype = Super.prototype;
		t = new t();
		copy(pt,t);
		Class.prototype = pt = t;
	}
	if(pt.constructor != Class){
		if(typeof Class != 'function'){
			console.error("unknown Class:"+Class)
		}
		pt.constructor = Class
	}
}

// Node Types
var NodeType = {}
var ELEMENT_NODE                = NodeType.ELEMENT_NODE                = 1;
var ATTRIBUTE_NODE              = NodeType.ATTRIBUTE_NODE              = 2;
var TEXT_NODE                   = NodeType.TEXT_NODE                   = 3;
var CDATA_SECTION_NODE          = NodeType.CDATA_SECTION_NODE          = 4;
var ENTITY_REFERENCE_NODE       = NodeType.ENTITY_REFERENCE_NODE       = 5;
var ENTITY_NODE                 = NodeType.ENTITY_NODE                 = 6;
var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;
var COMMENT_NODE                = NodeType.COMMENT_NODE                = 8;
var DOCUMENT_NODE               = NodeType.DOCUMENT_NODE               = 9;
var DOCUMENT_TYPE_NODE          = NodeType.DOCUMENT_TYPE_NODE          = 10;
var DOCUMENT_FRAGMENT_NODE      = NodeType.DOCUMENT_FRAGMENT_NODE      = 11;
var NOTATION_NODE               = NodeType.NOTATION_NODE               = 12;

// ExceptionCode
var ExceptionCode = {}
var ExceptionMessage = {};
var INDEX_SIZE_ERR              = ExceptionCode.INDEX_SIZE_ERR              = ((ExceptionMessage[1]="Index size error"),1);
var DOMSTRING_SIZE_ERR          = ExceptionCode.DOMSTRING_SIZE_ERR          = ((ExceptionMessage[2]="DOMString size error"),2);
var HIERARCHY_REQUEST_ERR       = ExceptionCode.HIERARCHY_REQUEST_ERR       = ((ExceptionMessage[3]="Hierarchy request error"),3);
var WRONG_DOCUMENT_ERR          = ExceptionCode.WRONG_DOCUMENT_ERR          = ((ExceptionMessage[4]="Wrong document"),4);
var INVALID_CHARACTER_ERR       = ExceptionCode.INVALID_CHARACTER_ERR       = ((ExceptionMessage[5]="Invalid character"),5);
var NO_DATA_ALLOWED_ERR         = ExceptionCode.NO_DATA_ALLOWED_ERR         = ((ExceptionMessage[6]="No data allowed"),6);
var NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]="No modification allowed"),7);
var NOT_FOUND_ERR               = ExceptionCode.NOT_FOUND_ERR               = ((ExceptionMessage[8]="Not found"),8);
var NOT_SUPPORTED_ERR           = ExceptionCode.NOT_SUPPORTED_ERR           = ((ExceptionMessage[9]="Not supported"),9);
var INUSE_ATTRIBUTE_ERR         = ExceptionCode.INUSE_ATTRIBUTE_ERR         = ((ExceptionMessage[10]="Attribute in use"),10);
//level2
var INVALID_STATE_ERR        	= ExceptionCode.INVALID_STATE_ERR        	= ((ExceptionMessage[11]="Invalid state"),11);
var SYNTAX_ERR               	= ExceptionCode.SYNTAX_ERR               	= ((ExceptionMessage[12]="Syntax error"),12);
var INVALID_MODIFICATION_ERR 	= ExceptionCode.INVALID_MODIFICATION_ERR 	= ((ExceptionMessage[13]="Invalid modification"),13);
var NAMESPACE_ERR            	= ExceptionCode.NAMESPACE_ERR           	= ((ExceptionMessage[14]="Invalid namespace"),14);
var INVALID_ACCESS_ERR       	= ExceptionCode.INVALID_ACCESS_ERR      	= ((ExceptionMessage[15]="Invalid access"),15);

/**
 * DOM Level 2
 * Object DOMException
 * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
 * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
 */
function DOMException(code, message) {
	if(message instanceof Error){
		var error = message;
	}else{
		error = this;
		Error.call(this, ExceptionMessage[code]);
		this.message = ExceptionMessage[code];
		if(Error.captureStackTrace) Error.captureStackTrace(this, DOMException);
	}
	error.code = code;
	if(message) this.message = this.message + ": " + message;
	return error;
};
DOMException.prototype = Error.prototype;
copy(ExceptionCode,DOMException)

/**
 * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
 * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.
 * The items in the NodeList are accessible via an integral index, starting from 0.
 */
function NodeList() {
};
NodeList.prototype = {
	/**
	 * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.
	 * @standard level1
	 */
	length:0, 
	/**
	 * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.
	 * @standard level1
	 * @param index  unsigned long 
	 *   Index into the collection.
	 * @return Node
	 * 	The node at the indexth position in the NodeList, or null if that is not a valid index. 
	 */
	item: function(index) {
		return this[index] || null;
	},
	toString:function(isHTML,nodeFilter){
		for(var buf = [], i = 0;i<this.length;i++){
			serializeToString(this[i],buf,isHTML,nodeFilter);
		}
		return buf.join('');
	}
};

function LiveNodeList(node,refresh){
	this._node = node;
	this._refresh = refresh
	_updateLiveList(this);
}
function _updateLiveList(list){
	var inc = list._node._inc || list._node.ownerDocument._inc;
	if(list._inc != inc){
		var ls = list._refresh(list._node);
		//console.log(ls.length)
		__set__(list,'length',ls.length);
		copy(ls,list);
		list._inc = inc;
	}
}
LiveNodeList.prototype.item = function(i){
	_updateLiveList(this);
	return this[i];
}

_extends(LiveNodeList,NodeList);

/**
 * Objects implementing the NamedNodeMap interface are used
 * to represent collections of nodes that can be accessed by name.
 * Note that NamedNodeMap does not inherit from NodeList;
 * NamedNodeMaps are not maintained in any particular order.
 * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,
 * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,
 * and does not imply that the DOM specifies an order to these Nodes.
 * NamedNodeMap objects in the DOM are live.
 * used for attributes or DocumentType entities 
 */
function NamedNodeMap() {
};

function _findNodeIndex(list,node){
	var i = list.length;
	while(i--){
		if(list[i] === node){return i}
	}
}

function _addNamedNode(el,list,newAttr,oldAttr){
	if(oldAttr){
		list[_findNodeIndex(list,oldAttr)] = newAttr;
	}else{
		list[list.length++] = newAttr;
	}
	if(el){
		newAttr.ownerElement = el;
		var doc = el.ownerDocument;
		if(doc){
			oldAttr && _onRemoveAttribute(doc,el,oldAttr);
			_onAddAttribute(doc,el,newAttr);
		}
	}
}
function _removeNamedNode(el,list,attr){
	//console.log('remove attr:'+attr)
	var i = _findNodeIndex(list,attr);
	if(i>=0){
		var lastIndex = list.length-1
		while(i<lastIndex){
			list[i] = list[++i]
		}
		list.length = lastIndex;
		if(el){
			var doc = el.ownerDocument;
			if(doc){
				_onRemoveAttribute(doc,el,attr);
				attr.ownerElement = null;
			}
		}
	}else{
		throw DOMException(NOT_FOUND_ERR,new Error(el.tagName+'@'+attr))
	}
}
NamedNodeMap.prototype = {
	length:0,
	item:NodeList.prototype.item,
	getNamedItem: function(key) {
//		if(key.indexOf(':')>0 || key == 'xmlns'){
//			return null;
//		}
		//console.log()
		var i = this.length;
		while(i--){
			var attr = this[i];
			//console.log(attr.nodeName,key)
			if(attr.nodeName == key){
				return attr;
			}
		}
	},
	setNamedItem: function(attr) {
		var el = attr.ownerElement;
		if(el && el!=this._ownerElement){
			throw new DOMException(INUSE_ATTRIBUTE_ERR);
		}
		var oldAttr = this.getNamedItem(attr.nodeName);
		_addNamedNode(this._ownerElement,this,attr,oldAttr);
		return oldAttr;
	},
	/* returns Node */
	setNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR
		var el = attr.ownerElement, oldAttr;
		if(el && el!=this._ownerElement){
			throw new DOMException(INUSE_ATTRIBUTE_ERR);
		}
		oldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName);
		_addNamedNode(this._ownerElement,this,attr,oldAttr);
		return oldAttr;
	},

	/* returns Node */
	removeNamedItem: function(key) {
		var attr = this.getNamedItem(key);
		_removeNamedNode(this._ownerElement,this,attr);
		return attr;
		
		
	},// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR
	
	//for level2
	removeNamedItemNS:function(namespaceURI,localName){
		var attr = this.getNamedItemNS(namespaceURI,localName);
		_removeNamedNode(this._ownerElement,this,attr);
		return attr;
	},
	getNamedItemNS: function(namespaceURI, localName) {
		var i = this.length;
		while(i--){
			var node = this[i];
			if(node.localName == localName && node.namespaceURI == namespaceURI){
				return node;
			}
		}
		return null;
	}
};

/**
 * The DOMImplementation interface represents an object providing methods
 * which are not dependent on any particular document.
 * Such an object is returned by the `Document.implementation` property.
 *
 * __The individual methods describe the differences compared to the specs.__
 *
 * @constructor
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN
 * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)
 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core
 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core
 * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard
 */
function DOMImplementation() {
}

DOMImplementation.prototype = {
	/**
	 * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.
	 * The different implementations fairly diverged in what kind of features were reported.
	 * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.
	 *
	 * @deprecated It is deprecated and modern browsers return true in all cases.
	 *
	 * @param {string} feature
	 * @param {string} [version]
	 * @returns {boolean} always true
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN
	 * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard
	 */
	hasFeature: function(feature, version) {
			return true;
	},
	/**
	 * Creates an XML Document object of the specified type with its document element.
	 *
	 * __It behaves slightly different from the description in the living standard__:
	 * - There is no interface/class `XMLDocument`, it returns a `Document` instance.
	 * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.
	 * - this implementation is not validating names or qualified names
	 *   (when parsing XML strings, the SAX parser takes care of that)
	 *
	 * @param {string|null} namespaceURI
	 * @param {string} qualifiedName
	 * @param {DocumentType=null} doctype
	 * @returns {Document}
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN
	 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument  DOM Level 2 Core
	 *
	 * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
	 * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
	 * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
	 */
	createDocument: function(namespaceURI,  qualifiedName, doctype){
		var doc = new Document();
		doc.implementation = this;
		doc.childNodes = new NodeList();
		doc.doctype = doctype || null;
		if (doctype){
			doc.appendChild(doctype);
		}
		if (qualifiedName){
			var root = doc.createElementNS(namespaceURI, qualifiedName);
			doc.appendChild(root);
		}
		return doc;
	},
	/**
	 * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.
	 *
	 * __This behavior is slightly different from the in the specs__:
	 * - this implementation is not validating names or qualified names
	 *   (when parsing XML strings, the SAX parser takes care of that)
	 *
	 * @param {string} qualifiedName
	 * @param {string} [publicId]
	 * @param {string} [systemId]
	 * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation
	 * 				  or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN
	 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard
	 *
	 * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
	 * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
	 * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
	 */
	createDocumentType: function(qualifiedName, publicId, systemId){
		var node = new DocumentType();
		node.name = qualifiedName;
		node.nodeName = qualifiedName;
		node.publicId = publicId || '';
		node.systemId = systemId || '';

		return node;
	}
};


/**
 * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
 */

function Node() {
};

Node.prototype = {
	firstChild : null,
	lastChild : null,
	previousSibling : null,
	nextSibling : null,
	attributes : null,
	parentNode : null,
	childNodes : null,
	ownerDocument : null,
	nodeValue : null,
	namespaceURI : null,
	prefix : null,
	localName : null,
	// Modified in DOM Level 2:
	insertBefore:function(newChild, refChild){//raises 
		return _insertBefore(this,newChild,refChild);
	},
	replaceChild:function(newChild, oldChild){//raises 
		this.insertBefore(newChild,oldChild);
		if(oldChild){
			this.removeChild(oldChild);
		}
	},
	removeChild:function(oldChild){
		return _removeChild(this,oldChild);
	},
	appendChild:function(newChild){
		return this.insertBefore(newChild,null);
	},
	hasChildNodes:function(){
		return this.firstChild != null;
	},
	cloneNode:function(deep){
		return cloneNode(this.ownerDocument||this,this,deep);
	},
	// Modified in DOM Level 2:
	normalize:function(){
		var child = this.firstChild;
		while(child){
			var next = child.nextSibling;
			if(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){
				this.removeChild(next);
				child.appendData(next.data);
			}else{
				child.normalize();
				child = next;
			}
		}
	},
  	// Introduced in DOM Level 2:
	isSupported:function(feature, version){
		return this.ownerDocument.implementation.hasFeature(feature,version);
	},
    // Introduced in DOM Level 2:
    hasAttributes:function(){
    	return this.attributes.length>0;
    },
	/**
	 * Look up the prefix associated to the given namespace URI, starting from this node.
	 * **The default namespace declarations are ignored by this method.**
	 * See Namespace Prefix Lookup for details on the algorithm used by this method.
	 *
	 * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._
	 *
	 * @param {string | null} namespaceURI
	 * @returns {string | null}
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo
	 * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix
	 * @see https://github.com/xmldom/xmldom/issues/322
	 */
    lookupPrefix:function(namespaceURI){
    	var el = this;
    	while(el){
    		var map = el._nsMap;
    		//console.dir(map)
    		if(map){
    			for(var n in map){
    				if(map[n] == namespaceURI){
    					return n;
    				}
    			}
    		}
    		el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;
    	}
    	return null;
    },
    // Introduced in DOM Level 3:
    lookupNamespaceURI:function(prefix){
    	var el = this;
    	while(el){
    		var map = el._nsMap;
    		//console.dir(map)
    		if(map){
    			if(prefix in map){
    				return map[prefix] ;
    			}
    		}
    		el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;
    	}
    	return null;
    },
    // Introduced in DOM Level 3:
    isDefaultNamespace:function(namespaceURI){
    	var prefix = this.lookupPrefix(namespaceURI);
    	return prefix == null;
    }
};


function _xmlEncoder(c){
	return c == '<' && '&lt;' ||
         c == '>' && '&gt;' ||
         c == '&' && '&amp;' ||
         c == '"' && '&quot;' ||
         '&#'+c.charCodeAt()+';'
}


copy(NodeType,Node);
copy(NodeType,Node.prototype);

/**
 * @param callback return true for continue,false for break
 * @return boolean true: break visit;
 */
function _visitNode(node,callback){
	if(callback(node)){
		return true;
	}
	if(node = node.firstChild){
		do{
			if(_visitNode(node,callback)){return true}
        }while(node=node.nextSibling)
    }
}



function Document(){
}

function _onAddAttribute(doc,el,newAttr){
	doc && doc._inc++;
	var ns = newAttr.namespaceURI ;
	if(ns === NAMESPACE.XMLNS){
		//update namespace
		el._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value
	}
}

function _onRemoveAttribute(doc,el,newAttr,remove){
	doc && doc._inc++;
	var ns = newAttr.namespaceURI ;
	if(ns === NAMESPACE.XMLNS){
		//update namespace
		delete el._nsMap[newAttr.prefix?newAttr.localName:'']
	}
}

/**
 * Updates `el.childNodes`, updating the indexed items and it's `length`.
 * Passing `newChild` means it will be appended.
 * Otherwise it's assumed that an item has been removed,
 * and `el.firstNode` and it's `.nextSibling` are used
 * to walk the current list of child nodes.
 *
 * @param {Document} doc
 * @param {Node} el
 * @param {Node} [newChild]
 * @private
 */
function _onUpdateChild (doc, el, newChild) {
	if(doc && doc._inc){
		doc._inc++;
		//update childNodes
		var cs = el.childNodes;
		if (newChild) {
			cs[cs.length++] = newChild;
		} else {
			var child = el.firstChild;
			var i = 0;
			while (child) {
				cs[i++] = child;
				child = child.nextSibling;
			}
			cs.length = i;
			delete cs[cs.length];
		}
	}
}

/**
 * Removes the connections between `parentNode` and `child`
 * and any existing `child.previousSibling` or `child.nextSibling`.
 *
 * @see https://github.com/xmldom/xmldom/issues/135
 * @see https://github.com/xmldom/xmldom/issues/145
 *
 * @param {Node} parentNode
 * @param {Node} child
 * @returns {Node} the child that was removed.
 * @private
 */
function _removeChild (parentNode, child) {
	var previous = child.previousSibling;
	var next = child.nextSibling;
	if (previous) {
		previous.nextSibling = next;
	} else {
		parentNode.firstChild = next;
	}
	if (next) {
		next.previousSibling = previous;
	} else {
		parentNode.lastChild = previous;
	}
	child.parentNode = null;
	child.previousSibling = null;
	child.nextSibling = null;
	_onUpdateChild(parentNode.ownerDocument, parentNode);
	return child;
}
/**
 * preformance key(refChild == null)
 */
function _insertBefore(parentNode,newChild,nextChild){
	var cp = newChild.parentNode;
	if(cp){
		cp.removeChild(newChild);//remove and update
	}
	if(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){
		var newFirst = newChild.firstChild;
		if (newFirst == null) {
			return newChild;
		}
		var newLast = newChild.lastChild;
	}else{
		newFirst = newLast = newChild;
	}
	var pre = nextChild ? nextChild.previousSibling : parentNode.lastChild;

	newFirst.previousSibling = pre;
	newLast.nextSibling = nextChild;
	
	
	if(pre){
		pre.nextSibling = newFirst;
	}else{
		parentNode.firstChild = newFirst;
	}
	if(nextChild == null){
		parentNode.lastChild = newLast;
	}else{
		nextChild.previousSibling = newLast;
	}
	do{
		newFirst.parentNode = parentNode;
	}while(newFirst !== newLast && (newFirst= newFirst.nextSibling))
	_onUpdateChild(parentNode.ownerDocument||parentNode,parentNode);
	//console.log(parentNode.lastChild.nextSibling == null)
	if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {
		newChild.firstChild = newChild.lastChild = null;
	}
	return newChild;
}

/**
 * Appends `newChild` to `parentNode`.
 * If `newChild` is already connected to a `parentNode` it is first removed from it.
 *
 * @see https://github.com/xmldom/xmldom/issues/135
 * @see https://github.com/xmldom/xmldom/issues/145
 * @param {Node} parentNode
 * @param {Node} newChild
 * @returns {Node}
 * @private
 */
function _appendSingleChild (parentNode, newChild) {
	if (newChild.parentNode) {
		newChild.parentNode.removeChild(newChild);
	}
	newChild.parentNode = parentNode;
	newChild.previousSibling = parentNode.lastChild;
	newChild.nextSibling = null;
	if (newChild.previousSibling) {
		newChild.previousSibling.nextSibling = newChild;
	} else {
		parentNode.firstChild = newChild;
	}
	parentNode.lastChild = newChild;
	_onUpdateChild(parentNode.ownerDocument, parentNode, newChild);
	return newChild;
}

Document.prototype = {
	//implementation : null,
	nodeName :  '#document',
	nodeType :  DOCUMENT_NODE,
	/**
	 * The DocumentType node of the document.
	 *
	 * @readonly
	 * @type DocumentType
	 */
	doctype :  null,
	documentElement :  null,
	_inc : 1,

	insertBefore :  function(newChild, refChild){//raises
		if(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){
			var child = newChild.firstChild;
			while(child){
				var next = child.nextSibling;
				this.insertBefore(child,refChild);
				child = next;
			}
			return newChild;
		}
		if(this.documentElement == null && newChild.nodeType == ELEMENT_NODE){
			this.documentElement = newChild;
		}

		return _insertBefore(this,newChild,refChild),(newChild.ownerDocument = this),newChild;
	},
	removeChild :  function(oldChild){
		if(this.documentElement == oldChild){
			this.documentElement = null;
		}
		return _removeChild(this,oldChild);
	},
	// Introduced in DOM Level 2:
	importNode : function(importedNode,deep){
		return importNode(this,importedNode,deep);
	},
	// Introduced in DOM Level 2:
	getElementById :	function(id){
		var rtv = null;
		_visitNode(this.documentElement,function(node){
			if(node.nodeType == ELEMENT_NODE){
				if(node.getAttribute('id') == id){
					rtv = node;
					return true;
				}
			}
		})
		return rtv;
	},

	/**
	 * The `getElementsByClassName` method of `Document` interface returns an array-like object
	 * of all child elements which have **all** of the given class name(s).
	 *
	 * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.
	 *
	 *
	 * Warning: This is a live LiveNodeList.
	 * Changes in the DOM will reflect in the array as the changes occur.
	 * If an element selected by this array no longer qualifies for the selector,
	 * it will automatically be removed. Be aware of this for iteration purposes.
	 *
	 * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
	 * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname
	 */
	getElementsByClassName: function(classNames) {
		var classNamesSet = toOrderedSet(classNames)
		return new LiveNodeList(this, function(base) {
			var ls = [];
			if (classNamesSet.length > 0) {
				_visitNode(base.documentElement, function(node) {
					if(node !== base && node.nodeType === ELEMENT_NODE) {
						var nodeClassNames = node.getAttribute('class')
						// can be null if the attribute does not exist
						if (nodeClassNames) {
							// before splitting and iterating just compare them for the most common case
							var matches = classNames === nodeClassNames;
							if (!matches) {
								var nodeClassNamesSet = toOrderedSet(nodeClassNames)
								matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet))
							}
							if(matches) {
								ls.push(node);
							}
						}
					}
				});
			}
			return ls;
		});
	},

	//document factory method:
	createElement :	function(tagName){
		var node = new Element();
		node.ownerDocument = this;
		node.nodeName = tagName;
		node.tagName = tagName;
		node.localName = tagName;
		node.childNodes = new NodeList();
		var attrs	= node.attributes = new NamedNodeMap();
		attrs._ownerElement = node;
		return node;
	},
	createDocumentFragment :	function(){
		var node = new DocumentFragment();
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		return node;
	},
	createTextNode :	function(data){
		var node = new Text();
		node.ownerDocument = this;
		node.appendData(data)
		return node;
	},
	createComment :	function(data){
		var node = new Comment();
		node.ownerDocument = this;
		node.appendData(data)
		return node;
	},
	createCDATASection :	function(data){
		var node = new CDATASection();
		node.ownerDocument = this;
		node.appendData(data)
		return node;
	},
	createProcessingInstruction :	function(target,data){
		var node = new ProcessingInstruction();
		node.ownerDocument = this;
		node.tagName = node.target = target;
		node.nodeValue= node.data = data;
		return node;
	},
	createAttribute :	function(name){
		var node = new Attr();
		node.ownerDocument	= this;
		node.name = name;
		node.nodeName	= name;
		node.localName = name;
		node.specified = true;
		return node;
	},
	createEntityReference :	function(name){
		var node = new EntityReference();
		node.ownerDocument	= this;
		node.nodeName	= name;
		return node;
	},
	// Introduced in DOM Level 2:
	createElementNS :	function(namespaceURI,qualifiedName){
		var node = new Element();
		var pl = qualifiedName.split(':');
		var attrs	= node.attributes = new NamedNodeMap();
		node.childNodes = new NodeList();
		node.ownerDocument = this;
		node.nodeName = qualifiedName;
		node.tagName = qualifiedName;
		node.namespaceURI = namespaceURI;
		if(pl.length == 2){
			node.prefix = pl[0];
			node.localName = pl[1];
		}else{
			//el.prefix = null;
			node.localName = qualifiedName;
		}
		attrs._ownerElement = node;
		return node;
	},
	// Introduced in DOM Level 2:
	createAttributeNS :	function(namespaceURI,qualifiedName){
		var node = new Attr();
		var pl = qualifiedName.split(':');
		node.ownerDocument = this;
		node.nodeName = qualifiedName;
		node.name = qualifiedName;
		node.namespaceURI = namespaceURI;
		node.specified = true;
		if(pl.length == 2){
			node.prefix = pl[0];
			node.localName = pl[1];
		}else{
			//el.prefix = null;
			node.localName = qualifiedName;
		}
		return node;
	}
};
_extends(Document,Node);


function Element() {
	this._nsMap = {};
};
Element.prototype = {
	nodeType : ELEMENT_NODE,
	hasAttribute : function(name){
		return this.getAttributeNode(name)!=null;
	},
	getAttribute : function(name){
		var attr = this.getAttributeNode(name);
		return attr && attr.value || '';
	},
	getAttributeNode : function(name){
		return this.attributes.getNamedItem(name);
	},
	setAttribute : function(name, value){
		var attr = this.ownerDocument.createAttribute(name);
		attr.value = attr.nodeValue = "" + value;
		this.setAttributeNode(attr)
	},
	removeAttribute : function(name){
		var attr = this.getAttributeNode(name)
		attr && this.removeAttributeNode(attr);
	},
	
	//four real opeartion method
	appendChild:function(newChild){
		if(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){
			return this.insertBefore(newChild,null);
		}else{
			return _appendSingleChild(this,newChild);
		}
	},
	setAttributeNode : function(newAttr){
		return this.attributes.setNamedItem(newAttr);
	},
	setAttributeNodeNS : function(newAttr){
		return this.attributes.setNamedItemNS(newAttr);
	},
	removeAttributeNode : function(oldAttr){
		//console.log(this == oldAttr.ownerElement)
		return this.attributes.removeNamedItem(oldAttr.nodeName);
	},
	//get real attribute name,and remove it by removeAttributeNode
	removeAttributeNS : function(namespaceURI, localName){
		var old = this.getAttributeNodeNS(namespaceURI, localName);
		old && this.removeAttributeNode(old);
	},
	
	hasAttributeNS : function(namespaceURI, localName){
		return this.getAttributeNodeNS(namespaceURI, localName)!=null;
	},
	getAttributeNS : function(namespaceURI, localName){
		var attr = this.getAttributeNodeNS(namespaceURI, localName);
		return attr && attr.value || '';
	},
	setAttributeNS : function(namespaceURI, qualifiedName, value){
		var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
		attr.value = attr.nodeValue = "" + value;
		this.setAttributeNode(attr)
	},
	getAttributeNodeNS : function(namespaceURI, localName){
		return this.attributes.getNamedItemNS(namespaceURI, localName);
	},
	
	getElementsByTagName : function(tagName){
		return new LiveNodeList(this,function(base){
			var ls = [];
			_visitNode(base,function(node){
				if(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){
					ls.push(node);
				}
			});
			return ls;
		});
	},
	getElementsByTagNameNS : function(namespaceURI, localName){
		return new LiveNodeList(this,function(base){
			var ls = [];
			_visitNode(base,function(node){
				if(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){
					ls.push(node);
				}
			});
			return ls;
			
		});
	}
};
Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;


_extends(Element,Node);
function Attr() {
};
Attr.prototype.nodeType = ATTRIBUTE_NODE;
_extends(Attr,Node);


function CharacterData() {
};
CharacterData.prototype = {
	data : '',
	substringData : function(offset, count) {
		return this.data.substring(offset, offset+count);
	},
	appendData: function(text) {
		text = this.data+text;
		this.nodeValue = this.data = text;
		this.length = text.length;
	},
	insertData: function(offset,text) {
		this.replaceData(offset,0,text);
	
	},
	appendChild:function(newChild){
		throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])
	},
	deleteData: function(offset, count) {
		this.replaceData(offset,count,"");
	},
	replaceData: function(offset, count, text) {
		var start = this.data.substring(0,offset);
		var end = this.data.substring(offset+count);
		text = start + text + end;
		this.nodeValue = this.data = text;
		this.length = text.length;
	}
}
_extends(CharacterData,Node);
function Text() {
};
Text.prototype = {
	nodeName : "#text",
	nodeType : TEXT_NODE,
	splitText : function(offset) {
		var text = this.data;
		var newText = text.substring(offset);
		text = text.substring(0, offset);
		this.data = this.nodeValue = text;
		this.length = text.length;
		var newNode = this.ownerDocument.createTextNode(newText);
		if(this.parentNode){
			this.parentNode.insertBefore(newNode, this.nextSibling);
		}
		return newNode;
	}
}
_extends(Text,CharacterData);
function Comment() {
};
Comment.prototype = {
	nodeName : "#comment",
	nodeType : COMMENT_NODE
}
_extends(Comment,CharacterData);

function CDATASection() {
};
CDATASection.prototype = {
	nodeName : "#cdata-section",
	nodeType : CDATA_SECTION_NODE
}
_extends(CDATASection,CharacterData);


function DocumentType() {
};
DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
_extends(DocumentType,Node);

function Notation() {
};
Notation.prototype.nodeType = NOTATION_NODE;
_extends(Notation,Node);

function Entity() {
};
Entity.prototype.nodeType = ENTITY_NODE;
_extends(Entity,Node);

function EntityReference() {
};
EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
_extends(EntityReference,Node);

function DocumentFragment() {
};
DocumentFragment.prototype.nodeName =	"#document-fragment";
DocumentFragment.prototype.nodeType =	DOCUMENT_FRAGMENT_NODE;
_extends(DocumentFragment,Node);


function ProcessingInstruction() {
}
ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
_extends(ProcessingInstruction,Node);
function XMLSerializer(){}
XMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){
	return nodeSerializeToString.call(node,isHtml,nodeFilter);
}
Node.prototype.toString = nodeSerializeToString;
function nodeSerializeToString(isHtml,nodeFilter){
	var buf = [];
	var refNode = this.nodeType == 9 && this.documentElement || this;
	var prefix = refNode.prefix;
	var uri = refNode.namespaceURI;
	
	if(uri && prefix == null){
		//console.log(prefix)
		var prefix = refNode.lookupPrefix(uri);
		if(prefix == null){
			//isHTML = true;
			var visibleNamespaces=[
			{namespace:uri,prefix:null}
			//{namespace:uri,prefix:''}
			]
		}
	}
	serializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces);
	//console.log('###',this.nodeType,uri,prefix,buf.join(''))
	return buf.join('');
}

function needNamespaceDefine(node, isHTML, visibleNamespaces) {
	var prefix = node.prefix || '';
	var uri = node.namespaceURI;
	// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,
	// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :
	// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.
	// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)
	// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :
	// > [...] Furthermore, the attribute value [...] must not be an empty string.
	// so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document.
	if (!uri) {
		return false;
	}
	if (prefix === "xml" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) {
		return false;
	}
	
	var i = visibleNamespaces.length 
	while (i--) {
		var ns = visibleNamespaces[i];
		// get namespace prefix
		if (ns.prefix === prefix) {
			return ns.namespace !== uri;
		}
	}
	return true;
}
/**
 * Well-formed constraint: No < in Attribute Values
 * > The replacement text of any entity referred to directly or indirectly
 * > in an attribute value must not contain a <.
 * @see https://www.w3.org/TR/xml11/#CleanAttrVals
 * @see https://www.w3.org/TR/xml11/#NT-AttValue
 *
 * Literal whitespace other than space that appear in attribute values
 * are serialized as their entity references, so they will be preserved.
 * (In contrast to whitespace literals in the input which are normalized to spaces)
 * @see https://www.w3.org/TR/xml11/#AVNormalize
 * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes
 */
function addSerializedAttribute(buf, qualifiedName, value) {
	buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"')
}

function serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){
	if (!visibleNamespaces) {
		visibleNamespaces = [];
	}

	if(nodeFilter){
		node = nodeFilter(node);
		if(node){
			if(typeof node == 'string'){
				buf.push(node);
				return;
			}
		}else{
			return;
		}
		//buf.sort.apply(attrs, attributeSorter);
	}

	switch(node.nodeType){
	case ELEMENT_NODE:
		var attrs = node.attributes;
		var len = attrs.length;
		var child = node.firstChild;
		var nodeName = node.tagName;
		
		isHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML

		var prefixedNodeName = nodeName
		if (!isHTML && !node.prefix && node.namespaceURI) {
			var defaultNS
			// lookup current default ns from `xmlns` attribute
			for (var ai = 0; ai < attrs.length; ai++) {
				if (attrs.item(ai).name === 'xmlns') {
					defaultNS = attrs.item(ai).value
					break
				}
			}
			if (!defaultNS) {
				// lookup current default ns in visibleNamespaces
				for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
					var namespace = visibleNamespaces[nsi]
					if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {
						defaultNS = namespace.namespace
						break
					}
				}
			}
			if (defaultNS !== node.namespaceURI) {
				for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
					var namespace = visibleNamespaces[nsi]
					if (namespace.namespace === node.namespaceURI) {
						if (namespace.prefix) {
							prefixedNodeName = namespace.prefix + ':' + nodeName
						}
						break
					}
				}
			}
		}

		buf.push('<', prefixedNodeName);

		for(var i=0;i<len;i++){
			// add namespaces for attributes
			var attr = attrs.item(i);
			if (attr.prefix == 'xmlns') {
				visibleNamespaces.push({ prefix: attr.localName, namespace: attr.value });
			}else if(attr.nodeName == 'xmlns'){
				visibleNamespaces.push({ prefix: '', namespace: attr.value });
			}
		}

		for(var i=0;i<len;i++){
			var attr = attrs.item(i);
			if (needNamespaceDefine(attr,isHTML, visibleNamespaces)) {
				var prefix = attr.prefix||'';
				var uri = attr.namespaceURI;
				addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
				visibleNamespaces.push({ prefix: prefix, namespace:uri });
			}
			serializeToString(attr,buf,isHTML,nodeFilter,visibleNamespaces);
		}

		// add namespace for current node		
		if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {
			var prefix = node.prefix||'';
			var uri = node.namespaceURI;
			addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
			visibleNamespaces.push({ prefix: prefix, namespace:uri });
		}
		
		if(child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)){
			buf.push('>');
			//if is cdata child node
			if(isHTML && /^script$/i.test(nodeName)){
				while(child){
					if(child.data){
						buf.push(child.data);
					}else{
						serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
					}
					child = child.nextSibling;
				}
			}else
			{
				while(child){
					serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
					child = child.nextSibling;
				}
			}
			buf.push('</',prefixedNodeName,'>');
		}else{
			buf.push('/>');
		}
		// remove added visible namespaces
		//visibleNamespaces.length = startVisibleNamespaces;
		return;
	case DOCUMENT_NODE:
	case DOCUMENT_FRAGMENT_NODE:
		var child = node.firstChild;
		while(child){
			serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
			child = child.nextSibling;
		}
		return;
	case ATTRIBUTE_NODE:
		return addSerializedAttribute(buf, node.name, node.value);
	case TEXT_NODE:
		/**
		 * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,
		 * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.
		 * If they are needed elsewhere, they must be escaped using either numeric character references or the strings
		 * `&amp;` and `&lt;` respectively.
		 * The right angle bracket (>) may be represented using the string " &gt; ", and must, for compatibility,
		 * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,
		 * when that string is not marking the end of a CDATA section.
		 *
		 * In the content of elements, character data is any string of characters
		 * which does not contain the start-delimiter of any markup
		 * and does not include the CDATA-section-close delimiter, `]]>`.
		 *
		 * @see https://www.w3.org/TR/xml/#NT-CharData
		 * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node
		 */
		return buf.push(node.data
			.replace(/[<&>]/g,_xmlEncoder)
		);
	case CDATA_SECTION_NODE:
		return buf.push( '<![CDATA[',node.data,']]>');
	case COMMENT_NODE:
		return buf.push( "<!--",node.data,"-->");
	case DOCUMENT_TYPE_NODE:
		var pubid = node.publicId;
		var sysid = node.systemId;
		buf.push('<!DOCTYPE ',node.name);
		if(pubid){
			buf.push(' PUBLIC ', pubid);
			if (sysid && sysid!='.') {
				buf.push(' ', sysid);
			}
			buf.push('>');
		}else if(sysid && sysid!='.'){
			buf.push(' SYSTEM ', sysid, '>');
		}else{
			var sub = node.internalSubset;
			if(sub){
				buf.push(" [",sub,"]");
			}
			buf.push(">");
		}
		return;
	case PROCESSING_INSTRUCTION_NODE:
		return buf.push( "<?",node.target," ",node.data,"?>");
	case ENTITY_REFERENCE_NODE:
		return buf.push( '&',node.nodeName,';');
	//case ENTITY_NODE:
	//case NOTATION_NODE:
	default:
		buf.push('??',node.nodeName);
	}
}
function importNode(doc,node,deep){
	var node2;
	switch (node.nodeType) {
	case ELEMENT_NODE:
		node2 = node.cloneNode(false);
		node2.ownerDocument = doc;
		//var attrs = node2.attributes;
		//var len = attrs.length;
		//for(var i=0;i<len;i++){
			//node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));
		//}
	case DOCUMENT_FRAGMENT_NODE:
		break;
	case ATTRIBUTE_NODE:
		deep = true;
		break;
	//case ENTITY_REFERENCE_NODE:
	//case PROCESSING_INSTRUCTION_NODE:
	////case TEXT_NODE:
	//case CDATA_SECTION_NODE:
	//case COMMENT_NODE:
	//	deep = false;
	//	break;
	//case DOCUMENT_NODE:
	//case DOCUMENT_TYPE_NODE:
	//cannot be imported.
	//case ENTITY_NODE:
	//case NOTATION_NODE：
	//can not hit in level3
	//default:throw e;
	}
	if(!node2){
		node2 = node.cloneNode(false);//false
	}
	node2.ownerDocument = doc;
	node2.parentNode = null;
	if(deep){
		var child = node.firstChild;
		while(child){
			node2.appendChild(importNode(doc,child,deep));
			child = child.nextSibling;
		}
	}
	return node2;
}
//
//var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,
//					attributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};
function cloneNode(doc,node,deep){
	var node2 = new node.constructor();
	for(var n in node){
		var v = node[n];
		if(typeof v != 'object' ){
			if(v != node2[n]){
				node2[n] = v;
			}
		}
	}
	if(node.childNodes){
		node2.childNodes = new NodeList();
	}
	node2.ownerDocument = doc;
	switch (node2.nodeType) {
	case ELEMENT_NODE:
		var attrs	= node.attributes;
		var attrs2	= node2.attributes = new NamedNodeMap();
		var len = attrs.length
		attrs2._ownerElement = node2;
		for(var i=0;i<len;i++){
			node2.setAttributeNode(cloneNode(doc,attrs.item(i),true));
		}
		break;;
	case ATTRIBUTE_NODE:
		deep = true;
	}
	if(deep){
		var child = node.firstChild;
		while(child){
			node2.appendChild(cloneNode(doc,child,deep));
			child = child.nextSibling;
		}
	}
	return node2;
}

function __set__(object,key,value){
	object[key] = value
}
//do dynamic
try{
	if(Object.defineProperty){
		Object.defineProperty(LiveNodeList.prototype,'length',{
			get:function(){
				_updateLiveList(this);
				return this.$$length;
			}
		});

		Object.defineProperty(Node.prototype,'textContent',{
			get:function(){
				return getTextContent(this);
			},

			set:function(data){
				switch(this.nodeType){
				case ELEMENT_NODE:
				case DOCUMENT_FRAGMENT_NODE:
					while(this.firstChild){
						this.removeChild(this.firstChild);
					}
					if(data || String(data)){
						this.appendChild(this.ownerDocument.createTextNode(data));
					}
					break;

				default:
					this.data = data;
					this.value = data;
					this.nodeValue = data;
				}
			}
		})
		
		function getTextContent(node){
			switch(node.nodeType){
			case ELEMENT_NODE:
			case DOCUMENT_FRAGMENT_NODE:
				var buf = [];
				node = node.firstChild;
				while(node){
					if(node.nodeType!==7 && node.nodeType !==8){
						buf.push(getTextContent(node));
					}
					node = node.nextSibling;
				}
				return buf.join('');
			default:
				return node.nodeValue;
			}
		}

		__set__ = function(object,key,value){
			//console.log(value)
			object['$$'+key] = value
		}
	}
}catch(e){//ie8
}

//if(typeof require == 'function'){
	exports.DocumentType = DocumentType;
	exports.DOMException = DOMException;
	exports.DOMImplementation = DOMImplementation;
	exports.Element = Element;
	exports.Node = Node;
	exports.NodeList = NodeList;
	exports.XMLSerializer = XMLSerializer;
//}

},{"./conventions":1}],4:[function(require,module,exports){
var freeze = require('./conventions').freeze;

/**
 * The entities that are predefined in every XML document.
 *
 * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1
 * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0
 * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia
 */
exports.XML_ENTITIES = freeze({amp:'&', apos:"'", gt:'>', lt:'<', quot:'"'})

/**
 * A map of currently 241 entities that are detected in an HTML document.
 * They contain all entries from `XML_ENTITIES`.
 *
 * @see XML_ENTITIES
 * @see DOMParser.parseFromString
 * @see DOMImplementation.prototype.createHTMLDocument
 * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec
 * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
 * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
 * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)
 * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)
 */
exports.HTML_ENTITIES = freeze({
       lt: '<',
       gt: '>',
       amp: '&',
       quot: '"',
       apos: "'",
       Agrave: "À",
       Aacute: "Á",
       Acirc: "Â",
       Atilde: "Ã",
       Auml: "Ä",
       Aring: "Å",
       AElig: "Æ",
       Ccedil: "Ç",
       Egrave: "È",
       Eacute: "É",
       Ecirc: "Ê",
       Euml: "Ë",
       Igrave: "Ì",
       Iacute: "Í",
       Icirc: "Î",
       Iuml: "Ï",
       ETH: "Ð",
       Ntilde: "Ñ",
       Ograve: "Ò",
       Oacute: "Ó",
       Ocirc: "Ô",
       Otilde: "Õ",
       Ouml: "Ö",
       Oslash: "Ø",
       Ugrave: "Ù",
       Uacute: "Ú",
       Ucirc: "Û",
       Uuml: "Ü",
       Yacute: "Ý",
       THORN: "Þ",
       szlig: "ß",
       agrave: "à",
       aacute: "á",
       acirc: "â",
       atilde: "ã",
       auml: "ä",
       aring: "å",
       aelig: "æ",
       ccedil: "ç",
       egrave: "è",
       eacute: "é",
       ecirc: "ê",
       euml: "ë",
       igrave: "ì",
       iacute: "í",
       icirc: "î",
       iuml: "ï",
       eth: "ð",
       ntilde: "ñ",
       ograve: "ò",
       oacute: "ó",
       ocirc: "ô",
       otilde: "õ",
       ouml: "ö",
       oslash: "ø",
       ugrave: "ù",
       uacute: "ú",
       ucirc: "û",
       uuml: "ü",
       yacute: "ý",
       thorn: "þ",
       yuml: "ÿ",
       nbsp: "\u00a0",
       iexcl: "¡",
       cent: "¢",
       pound: "£",
       curren: "¤",
       yen: "¥",
       brvbar: "¦",
       sect: "§",
       uml: "¨",
       copy: "©",
       ordf: "ª",
       laquo: "«",
       not: "¬",
       shy: "­­",
       reg: "®",
       macr: "¯",
       deg: "°",
       plusmn: "±",
       sup2: "²",
       sup3: "³",
       acute: "´",
       micro: "µ",
       para: "¶",
       middot: "·",
       cedil: "¸",
       sup1: "¹",
       ordm: "º",
       raquo: "»",
       frac14: "¼",
       frac12: "½",
       frac34: "¾",
       iquest: "¿",
       times: "×",
       divide: "÷",
       forall: "∀",
       part: "∂",
       exist: "∃",
       empty: "∅",
       nabla: "∇",
       isin: "∈",
       notin: "∉",
       ni: "∋",
       prod: "∏",
       sum: "∑",
       minus: "−",
       lowast: "∗",
       radic: "√",
       prop: "∝",
       infin: "∞",
       ang: "∠",
       and: "∧",
       or: "∨",
       cap: "∩",
       cup: "∪",
       'int': "∫",
       there4: "∴",
       sim: "∼",
       cong: "≅",
       asymp: "≈",
       ne: "≠",
       equiv: "≡",
       le: "≤",
       ge: "≥",
       sub: "⊂",
       sup: "⊃",
       nsub: "⊄",
       sube: "⊆",
       supe: "⊇",
       oplus: "⊕",
       otimes: "⊗",
       perp: "⊥",
       sdot: "⋅",
       Alpha: "Α",
       Beta: "Β",
       Gamma: "Γ",
       Delta: "Δ",
       Epsilon: "Ε",
       Zeta: "Ζ",
       Eta: "Η",
       Theta: "Θ",
       Iota: "Ι",
       Kappa: "Κ",
       Lambda: "Λ",
       Mu: "Μ",
       Nu: "Ν",
       Xi: "Ξ",
       Omicron: "Ο",
       Pi: "Π",
       Rho: "Ρ",
       Sigma: "Σ",
       Tau: "Τ",
       Upsilon: "Υ",
       Phi: "Φ",
       Chi: "Χ",
       Psi: "Ψ",
       Omega: "Ω",
       alpha: "α",
       beta: "β",
       gamma: "γ",
       delta: "δ",
       epsilon: "ε",
       zeta: "ζ",
       eta: "η",
       theta: "θ",
       iota: "ι",
       kappa: "κ",
       lambda: "λ",
       mu: "μ",
       nu: "ν",
       xi: "ξ",
       omicron: "ο",
       pi: "π",
       rho: "ρ",
       sigmaf: "ς",
       sigma: "σ",
       tau: "τ",
       upsilon: "υ",
       phi: "φ",
       chi: "χ",
       psi: "ψ",
       omega: "ω",
       thetasym: "ϑ",
       upsih: "ϒ",
       piv: "ϖ",
       OElig: "Œ",
       oelig: "œ",
       Scaron: "Š",
       scaron: "š",
       Yuml: "Ÿ",
       fnof: "ƒ",
       circ: "ˆ",
       tilde: "˜",
       ensp: " ",
       emsp: " ",
       thinsp: " ",
       zwnj: "‌",
       zwj: "‍",
       lrm: "‎",
       rlm: "‏",
       ndash: "–",
       mdash: "—",
       lsquo: "‘",
       rsquo: "’",
       sbquo: "‚",
       ldquo: "“",
       rdquo: "”",
       bdquo: "„",
       dagger: "†",
       Dagger: "‡",
       bull: "•",
       hellip: "…",
       permil: "‰",
       prime: "′",
       Prime: "″",
       lsaquo: "‹",
       rsaquo: "›",
       oline: "‾",
       euro: "€",
       trade: "™",
       larr: "←",
       uarr: "↑",
       rarr: "→",
       darr: "↓",
       harr: "↔",
       crarr: "↵",
       lceil: "⌈",
       rceil: "⌉",
       lfloor: "⌊",
       rfloor: "⌋",
       loz: "◊",
       spades: "♠",
       clubs: "♣",
       hearts: "♥",
       diams: "♦"
});

/**
 * @deprecated use `HTML_ENTITIES` instead
 * @see HTML_ENTITIES
 */
exports.entityMap = exports.HTML_ENTITIES

},{"./conventions":1}],5:[function(require,module,exports){
var dom = require('./dom')
exports.DOMImplementation = dom.DOMImplementation
exports.XMLSerializer = dom.XMLSerializer
exports.DOMParser = require('./dom-parser').DOMParser

},{"./dom":3,"./dom-parser":2}],6:[function(require,module,exports){
var NAMESPACE = require("./conventions").NAMESPACE;

//[4]   	NameStartChar	   ::=   	":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
//[4a]   	NameChar	   ::=   	NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
//[5]   	Name	   ::=   	NameStartChar (NameChar)*
var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]///\u10000-\uEFFFF
var nameChar = new RegExp("[\\-\\.0-9"+nameStartChar.source.slice(1,-1)+"\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
var tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\:'+nameStartChar.source+nameChar.source+'*)?$');
//var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')

//S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
//S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
var S_TAG = 0;//tag name offerring
var S_ATTR = 1;//attr name offerring
var S_ATTR_SPACE=2;//attr name end and space offer
var S_EQ = 3;//=space?
var S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)
var S_ATTR_END = 5;//attr value end and no space(quot end)
var S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)
var S_TAG_CLOSE = 7;//closed el<el />

/**
 * Creates an error that will not be caught by XMLReader aka the SAX parser.
 *
 * @param {string} message
 * @param {any?} locator Optional, can provide details about the location in the source
 * @constructor
 */
function ParseError(message, locator) {
	this.message = message
	this.locator = locator
	if(Error.captureStackTrace) Error.captureStackTrace(this, ParseError);
}
ParseError.prototype = new Error();
ParseError.prototype.name = ParseError.name

function XMLReader(){

}

XMLReader.prototype = {
	parse:function(source,defaultNSMap,entityMap){
		var domBuilder = this.domBuilder;
		domBuilder.startDocument();
		_copy(defaultNSMap ,defaultNSMap = {})
		parse(source,defaultNSMap,entityMap,
				domBuilder,this.errorHandler);
		domBuilder.endDocument();
	}
}
function parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){
	function fixedFromCharCode(code) {
		// String.prototype.fromCharCode does not supports
		// > 2 bytes unicode chars directly
		if (code > 0xffff) {
			code -= 0x10000;
			var surrogate1 = 0xd800 + (code >> 10)
				, surrogate2 = 0xdc00 + (code & 0x3ff);

			return String.fromCharCode(surrogate1, surrogate2);
		} else {
			return String.fromCharCode(code);
		}
	}
	function entityReplacer(a){
		var k = a.slice(1,-1);
		if (Object.hasOwnProperty.call(entityMap, k)) {
			return entityMap[k];
		}else if(k.charAt(0) === '#'){
			return fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))
		}else{
			errorHandler.error('entity not found:'+a);
			return a;
		}
	}
	function appendText(end){//has some bugs
		if(end>start){
			var xt = source.substring(start,end).replace(/&#?\w+;/g,entityReplacer);
			locator&&position(start);
			domBuilder.characters(xt,0,end-start);
			start = end
		}
	}
	function position(p,m){
		while(p>=lineEnd && (m = linePattern.exec(source))){
			lineStart = m.index;
			lineEnd = lineStart + m[0].length;
			locator.lineNumber++;
			//console.log('line++:',locator,startPos,endPos)
		}
		locator.columnNumber = p-lineStart+1;
	}
	var lineStart = 0;
	var lineEnd = 0;
	var linePattern = /.*(?:\r\n?|\n)|.*$/g
	var locator = domBuilder.locator;

	var parseStack = [{currentNSMap:defaultNSMapCopy}]
	var closeMap = {};
	var start = 0;
	while(true){
		try{
			var tagStart = source.indexOf('<',start);
			if(tagStart<0){
				if(!source.substr(start).match(/^\s*$/)){
					var doc = domBuilder.doc;
	    			var text = doc.createTextNode(source.substr(start));
	    			doc.appendChild(text);
	    			domBuilder.currentElement = text;
				}
				return;
			}
			if(tagStart>start){
				appendText(tagStart);
			}
			switch(source.charAt(tagStart+1)){
			case '/':
				var end = source.indexOf('>',tagStart+3);
				var tagName = source.substring(tagStart + 2, end).replace(/[ \t\n\r]+$/g, '');
				var config = parseStack.pop();
				if(end<0){

	        		tagName = source.substring(tagStart+2).replace(/[\s<].*/,'');
	        		errorHandler.error("end tag name: "+tagName+' is not complete:'+config.tagName);
	        		end = tagStart+1+tagName.length;
	        	}else if(tagName.match(/\s</)){
	        		tagName = tagName.replace(/[\s<].*/,'');
	        		errorHandler.error("end tag name: "+tagName+' maybe not complete');
	        		end = tagStart+1+tagName.length;
				}
				var localNSMap = config.localNSMap;
				var endMatch = config.tagName == tagName;
				var endIgnoreCaseMach = endMatch || config.tagName&&config.tagName.toLowerCase() == tagName.toLowerCase()
		        if(endIgnoreCaseMach){
		        	domBuilder.endElement(config.uri,config.localName,tagName);
					if(localNSMap){
						for(var prefix in localNSMap){
							domBuilder.endPrefixMapping(prefix) ;
						}
					}
					if(!endMatch){
		            	errorHandler.fatalError("end tag name: "+tagName+' is not match the current start tagName:'+config.tagName ); // No known test case
					}
		        }else{
		        	parseStack.push(config)
		        }

				end++;
				break;
				// end elment
			case '?':// <?...?>
				locator&&position(tagStart);
				end = parseInstruction(source,tagStart,domBuilder);
				break;
			case '!':// <!doctype,<![CDATA,<!--
				locator&&position(tagStart);
				end = parseDCC(source,tagStart,domBuilder,errorHandler);
				break;
			default:
				locator&&position(tagStart);
				var el = new ElementAttributes();
				var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
				//elStartEnd
				var end = parseElementStartPart(source,tagStart,el,currentNSMap,entityReplacer,errorHandler);
				var len = el.length;


				if(!el.closed && fixSelfClosed(source,end,el.tagName,closeMap)){
					el.closed = true;
					if(!entityMap.nbsp){
						errorHandler.warning('unclosed xml attribute');
					}
				}
				if(locator && len){
					var locator2 = copyLocator(locator,{});
					//try{//attribute position fixed
					for(var i = 0;i<len;i++){
						var a = el[i];
						position(a.offset);
						a.locator = copyLocator(locator,{});
					}
					domBuilder.locator = locator2
					if(appendElement(el,domBuilder,currentNSMap)){
						parseStack.push(el)
					}
					domBuilder.locator = locator;
				}else{
					if(appendElement(el,domBuilder,currentNSMap)){
						parseStack.push(el)
					}
				}

				if (NAMESPACE.isHTML(el.uri) && !el.closed) {
					end = parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder)
				} else {
					end++;
				}
			}
		}catch(e){
			if (e instanceof ParseError) {
				throw e;
			}
			errorHandler.error('element parse error: '+e)
			end = -1;
		}
		if(end>start){
			start = end;
		}else{
			//TODO: 这里有可能sax回退，有位置错误风险
			appendText(Math.max(tagStart,start)+1);
		}
	}
}
function copyLocator(f,t){
	t.lineNumber = f.lineNumber;
	t.columnNumber = f.columnNumber;
	return t;
}

/**
 * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
 * @return end of the elementStartPart(end of elementEndPart for selfClosed el)
 */
function parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){

	/**
	 * @param {string} qname
	 * @param {string} value
	 * @param {number} startIndex
	 */
	function addAttribute(qname, value, startIndex) {
		if (el.attributeNames.hasOwnProperty(qname)) {
			errorHandler.fatalError('Attribute ' + qname + ' redefined')
		}
		el.addValue(
			qname,
			// @see https://www.w3.org/TR/xml/#AVNormalize
			// since the xmldom sax parser does not "interpret" DTD the following is not implemented:
			// - recursive replacement of (DTD) entity references
			// - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA
			value.replace(/[\t\n\r]/g, ' ').replace(/&#?\w+;/g, entityReplacer),
			startIndex
		)
	}
	var attrName;
	var value;
	var p = ++start;
	var s = S_TAG;//status
	while(true){
		var c = source.charAt(p);
		switch(c){
		case '=':
			if(s === S_ATTR){//attrName
				attrName = source.slice(start,p);
				s = S_EQ;
			}else if(s === S_ATTR_SPACE){
				s = S_EQ;
			}else{
				//fatalError: equal must after attrName or space after attrName
				throw new Error('attribute equal must after attrName'); // No known test case
			}
			break;
		case '\'':
		case '"':
			if(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE
				){//equal
				if(s === S_ATTR){
					errorHandler.warning('attribute value must after "="')
					attrName = source.slice(start,p)
				}
				start = p+1;
				p = source.indexOf(c,start)
				if(p>0){
					value = source.slice(start, p);
					addAttribute(attrName, value, start-1);
					s = S_ATTR_END;
				}else{
					//fatalError: no end quot match
					throw new Error('attribute value no end \''+c+'\' match');
				}
			}else if(s == S_ATTR_NOQUOT_VALUE){
				value = source.slice(start, p);
				addAttribute(attrName, value, start);
				errorHandler.warning('attribute "'+attrName+'" missed start quot('+c+')!!');
				start = p+1;
				s = S_ATTR_END
			}else{
				//fatalError: no equal before
				throw new Error('attribute value must after "="'); // No known test case
			}
			break;
		case '/':
			switch(s){
			case S_TAG:
				el.setTagName(source.slice(start,p));
			case S_ATTR_END:
			case S_TAG_SPACE:
			case S_TAG_CLOSE:
				s =S_TAG_CLOSE;
				el.closed = true;
			case S_ATTR_NOQUOT_VALUE:
			case S_ATTR:
			case S_ATTR_SPACE:
				break;
			//case S_EQ:
			default:
				throw new Error("attribute invalid close char('/')") // No known test case
			}
			break;
		case ''://end document
			errorHandler.error('unexpected end of input');
			if(s == S_TAG){
				el.setTagName(source.slice(start,p));
			}
			return p;
		case '>':
			switch(s){
			case S_TAG:
				el.setTagName(source.slice(start,p));
			case S_ATTR_END:
			case S_TAG_SPACE:
			case S_TAG_CLOSE:
				break;//normal
			case S_ATTR_NOQUOT_VALUE://Compatible state
			case S_ATTR:
				value = source.slice(start,p);
				if(value.slice(-1) === '/'){
					el.closed  = true;
					value = value.slice(0,-1)
				}
			case S_ATTR_SPACE:
				if(s === S_ATTR_SPACE){
					value = attrName;
				}
				if(s == S_ATTR_NOQUOT_VALUE){
					errorHandler.warning('attribute "'+value+'" missed quot(")!');
					addAttribute(attrName, value, start)
				}else{
					if(!NAMESPACE.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)){
						errorHandler.warning('attribute "'+value+'" missed value!! "'+value+'" instead!!')
					}
					addAttribute(value, value, start)
				}
				break;
			case S_EQ:
				throw new Error('attribute value missed!!');
			}
//			console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
			return p;
		/*xml space '\x20' | #x9 | #xD | #xA; */
		case '\u0080':
			c = ' ';
		default:
			if(c<= ' '){//space
				switch(s){
				case S_TAG:
					el.setTagName(source.slice(start,p));//tagName
					s = S_TAG_SPACE;
					break;
				case S_ATTR:
					attrName = source.slice(start,p)
					s = S_ATTR_SPACE;
					break;
				case S_ATTR_NOQUOT_VALUE:
					var value = source.slice(start, p);
					errorHandler.warning('attribute "'+value+'" missed quot(")!!');
					addAttribute(attrName, value, start)
				case S_ATTR_END:
					s = S_TAG_SPACE;
					break;
				//case S_TAG_SPACE:
				//case S_EQ:
				//case S_ATTR_SPACE:
				//	void();break;
				//case S_TAG_CLOSE:
					//ignore warning
				}
			}else{//not space
//S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
//S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
				switch(s){
				//case S_TAG:void();break;
				//case S_ATTR:void();break;
				//case S_ATTR_NOQUOT_VALUE:void();break;
				case S_ATTR_SPACE:
					var tagName =  el.tagName;
					if (!NAMESPACE.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {
						errorHandler.warning('attribute "'+attrName+'" missed value!! "'+attrName+'" instead2!!')
					}
					addAttribute(attrName, attrName, start);
					start = p;
					s = S_ATTR;
					break;
				case S_ATTR_END:
					errorHandler.warning('attribute space is required"'+attrName+'"!!')
				case S_TAG_SPACE:
					s = S_ATTR;
					start = p;
					break;
				case S_EQ:
					s = S_ATTR_NOQUOT_VALUE;
					start = p;
					break;
				case S_TAG_CLOSE:
					throw new Error("elements closed character '/' and '>' must be connected to");
				}
			}
		}//end outer switch
		//console.log('p++',p)
		p++;
	}
}
/**
 * @return true if has new namespace define
 */
function appendElement(el,domBuilder,currentNSMap){
	var tagName = el.tagName;
	var localNSMap = null;
	//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
	var i = el.length;
	while(i--){
		var a = el[i];
		var qName = a.qName;
		var value = a.value;
		var nsp = qName.indexOf(':');
		if(nsp>0){
			var prefix = a.prefix = qName.slice(0,nsp);
			var localName = qName.slice(nsp+1);
			var nsPrefix = prefix === 'xmlns' && localName
		}else{
			localName = qName;
			prefix = null
			nsPrefix = qName === 'xmlns' && ''
		}
		//can not set prefix,because prefix !== ''
		a.localName = localName ;
		//prefix == null for no ns prefix attribute
		if(nsPrefix !== false){//hack!!
			if(localNSMap == null){
				localNSMap = {}
				//console.log(currentNSMap,0)
				_copy(currentNSMap,currentNSMap={})
				//console.log(currentNSMap,1)
			}
			currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
			a.uri = NAMESPACE.XMLNS
			domBuilder.startPrefixMapping(nsPrefix, value)
		}
	}
	var i = el.length;
	while(i--){
		a = el[i];
		var prefix = a.prefix;
		if(prefix){//no prefix attribute has no namespace
			if(prefix === 'xml'){
				a.uri = NAMESPACE.XML;
			}if(prefix !== 'xmlns'){
				a.uri = currentNSMap[prefix || '']

				//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
			}
		}
	}
	var nsp = tagName.indexOf(':');
	if(nsp>0){
		prefix = el.prefix = tagName.slice(0,nsp);
		localName = el.localName = tagName.slice(nsp+1);
	}else{
		prefix = null;//important!!
		localName = el.localName = tagName;
	}
	//no prefix element has default namespace
	var ns = el.uri = currentNSMap[prefix || ''];
	domBuilder.startElement(ns,localName,tagName,el);
	//endPrefixMapping and startPrefixMapping have not any help for dom builder
	//localNSMap = null
	if(el.closed){
		domBuilder.endElement(ns,localName,tagName);
		if(localNSMap){
			for(prefix in localNSMap){
				domBuilder.endPrefixMapping(prefix)
			}
		}
	}else{
		el.currentNSMap = currentNSMap;
		el.localNSMap = localNSMap;
		//parseStack.push(el);
		return true;
	}
}
function parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){
	if(/^(?:script|textarea)$/i.test(tagName)){
		var elEndStart =  source.indexOf('</'+tagName+'>',elStartEnd);
		var text = source.substring(elStartEnd+1,elEndStart);
		if(/[&<]/.test(text)){
			if(/^script$/i.test(tagName)){
				//if(!/\]\]>/.test(text)){
					//lexHandler.startCDATA();
					domBuilder.characters(text,0,text.length);
					//lexHandler.endCDATA();
					return elEndStart;
				//}
			}//}else{//text area
				text = text.replace(/&#?\w+;/g,entityReplacer);
				domBuilder.characters(text,0,text.length);
				return elEndStart;
			//}

		}
	}
	return elStartEnd+1;
}
function fixSelfClosed(source,elStartEnd,tagName,closeMap){
	//if(tagName in closeMap){
	var pos = closeMap[tagName];
	if(pos == null){
		//console.log(tagName)
		pos =  source.lastIndexOf('</'+tagName+'>')
		if(pos<elStartEnd){//忘记闭合
			pos = source.lastIndexOf('</'+tagName)
		}
		closeMap[tagName] =pos
	}
	return pos<elStartEnd;
	//}
}
function _copy(source,target){
	for(var n in source){target[n] = source[n]}
}
function parseDCC(source,start,domBuilder,errorHandler){//sure start with '<!'
	var next= source.charAt(start+2)
	switch(next){
	case '-':
		if(source.charAt(start + 3) === '-'){
			var end = source.indexOf('-->',start+4);
			//append comment source.substring(4,end)//<!--
			if(end>start){
				domBuilder.comment(source,start+4,end-start-4);
				return end+3;
			}else{
				errorHandler.error("Unclosed comment");
				return -1;
			}
		}else{
			//error
			return -1;
		}
	default:
		if(source.substr(start+3,6) == 'CDATA['){
			var end = source.indexOf(']]>',start+9);
			domBuilder.startCDATA();
			domBuilder.characters(source,start+9,end-start-9);
			domBuilder.endCDATA()
			return end+3;
		}
		//<!DOCTYPE
		//startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)
		var matchs = split(source,start);
		var len = matchs.length;
		if(len>1 && /!doctype/i.test(matchs[0][0])){
			var name = matchs[1][0];
			var pubid = false;
			var sysid = false;
			if(len>3){
				if(/^public$/i.test(matchs[2][0])){
					pubid = matchs[3][0];
					sysid = len>4 && matchs[4][0];
				}else if(/^system$/i.test(matchs[2][0])){
					sysid = matchs[3][0];
				}
			}
			var lastMatch = matchs[len-1]
			domBuilder.startDTD(name, pubid, sysid);
			domBuilder.endDTD();

			return lastMatch.index+lastMatch[0].length
		}
	}
	return -1;
}



function parseInstruction(source,start,domBuilder){
	var end = source.indexOf('?>',start);
	if(end){
		var match = source.substring(start,end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);
		if(match){
			var len = match[0].length;
			domBuilder.processingInstruction(match[1], match[2]) ;
			return end+2;
		}else{//error
			return -1;
		}
	}
	return -1;
}

function ElementAttributes(){
	this.attributeNames = {}
}
ElementAttributes.prototype = {
	setTagName:function(tagName){
		if(!tagNamePattern.test(tagName)){
			throw new Error('invalid tagName:'+tagName)
		}
		this.tagName = tagName
	},
	addValue:function(qName, value, offset) {
		if(!tagNamePattern.test(qName)){
			throw new Error('invalid attribute:'+qName)
		}
		this.attributeNames[qName] = this.length;
		this[this.length++] = {qName:qName,value:value,offset:offset}
	},
	length:0,
	getLocalName:function(i){return this[i].localName},
	getLocator:function(i){return this[i].locator},
	getQName:function(i){return this[i].qName},
	getURI:function(i){return this[i].uri},
	getValue:function(i){return this[i].value}
//	,getIndex:function(uri, localName)){
//		if(localName){
//
//		}else{
//			var qName = uri
//		}
//	},
//	getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
//	getType:function(uri,localName){}
//	getType:function(i){},
}



function split(source,start){
	var match;
	var buf = [];
	var reg = /'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;
	reg.lastIndex = start;
	reg.exec(source);//skip <
	while(match = reg.exec(source)){
		buf.push(match);
		if(match[1])return buf;
	}
}

exports.XMLReader = XMLReader;
exports.ParseError = ParseError;

},{"./conventions":1}],7:[function(require,module,exports){
'use strict'

var inherits = require('inherits')
var EventEmitter = require('events').EventEmitter
var LtxParser = require('ltx/lib/parsers/ltx')
var xml = require('@xmpp/xml')
var Stanza = xml.Stanza
var Element = xml.Element

/**
 * Recognizes <stream:stream> and collects stanzas used for ordinary
 * TCP streams and Websockets.
 *
 * API: write(data) & end(data)
 * Events: streamStart, stanza, end, error
 */
function StreamParser (options) {
  EventEmitter.call(this)
  var self = this

  var ElementInterface = (options && options.Element) || Element
  var ParserInterface = (options && options.Parser) || LtxParser
  this.maxStanzaSize = options && options.maxStanzaSize
  this.parser = new ParserInterface()

  /* Count traffic for entire life-time */
  this.bytesParsed = 0
  /* Will be reset upon first stanza, but enforce maxStanzaSize until it is parsed */
  this.bytesParsedOnStanzaBegin = 0

  this.parser.on('startElement', function (name, attrs) {
    if (!self.element) {
      self.emit('startElement', name, attrs)
      self.emit('start', new Element(name, attrs))
    }

    // TODO: refuse anything but <stream:stream>
    if (!self.element && (name === 'stream:stream')) {
      self.emit('streamStart', attrs)
    } else {
      var child
      if (!self.element) {
        /* A new stanza */
        child = new Stanza(name, attrs)
        self.element = child
        /* For maxStanzaSize enforcement */
        self.bytesParsedOnStanzaBegin = self.bytesParsed
      } else {
        /* A child element of a stanza */
        child = new ElementInterface(name, attrs)
        self.element = self.element.cnode(child)
      }
    }
  })

  this.parser.on('endElement', function (name) {
    if (!self.element) {
      self.emit('endElement', name)
    }

    if (!self.element && (name === 'stream:stream')) {
      self.end()
    } else if (self.element && (name === self.element.name)) {
      if (self.element.parent) {
        self.element = self.element.parent
      } else {
        /* element complete */
        self.emit('element', self.element)
        self.emit('stanza', self.element) // FIXME deprecate
        delete self.element
        /* maxStanzaSize doesn't apply until next startElement */
        delete self.bytesParsedOnStanzaBegin
      }
    } else {
      self.error('xml-not-well-formed', 'XML parse error')
    }
  })

  this.parser.on('text', function (str) {
    if (self.element) self.element.t(str)
  })

  this.parser.on('entityDecl', function () {
    /* Entity declarations are forbidden in XMPP. We must abort to
     * avoid a billion laughs.
     */
    self.error('xml-not-well-formed', 'No entity declarations allowed')
    self.end()
  })

  this.parser.on('error', this.emit.bind(this, 'error'))
}

inherits(StreamParser, EventEmitter)

/*
 * hack for most usecases, do we have a better idea?
 *   catch the following:
 *   <?xml version="1.0"?>
 *   <?xml version="1.0" encoding="UTF-8"?>
 *   <?xml version="1.0" encoding="UTF-16" standalone="yes"?>
 */
StreamParser.prototype.checkXMLHeader = function (data) {
  // check for xml tag
  var index = data.indexOf('<?xml')

  if (index !== -1) {
    var end = data.indexOf('?>')
    if (index >= 0 && end >= 0 && index < end + 2) {
      var search = data.substring(index, end + 2)
      data = data.replace(search, '')
    }
  }

  return data
}

StreamParser.prototype.write = function (data) {
  // if (/^<stream:stream [^>]+\/>$/.test(data)) {
  //   data = data.replace(/\/>$/, ">")
  // }
  if (this.parser) {
    data = data.toString('utf8')
    data = this.checkXMLHeader(data)

    /* If a maxStanzaSize is configured, the current stanza must consist only of this many bytes */
    if (this.bytesParsedOnStanzaBegin && this.maxStanzaSize &&
      this.bytesParsed > this.bytesParsedOnStanzaBegin + this.maxStanzaSize) {
      this.error('policy-violation', 'Maximum stanza size exceeded')
      return
    }
    this.bytesParsed += data.length

    this.parser.write(data)
  }
}

StreamParser.prototype.end = function (data) {
  if (data) {
    this.write(data)
  }
  /* Get GC'ed */
  delete this.parser
  this.emit('end')
}

StreamParser.prototype.error = function (condition, message) {
  var e = new Error(message)
  e.condition = condition
  this.emit('error', e)
}

module.exports = StreamParser

},{"@xmpp/xml":8,"events":80,"inherits":85,"ltx/lib/parsers/ltx":99}],8:[function(require,module,exports){
'use strict'

var ltx = require('ltx')
var tag = require('./lib/tag')

exports = module.exports = function xml () {
  return tag.apply(null, arguments)
}

Object.assign(exports, ltx)

exports.IQ = require('./lib/IQ')
exports.Message = require('./lib/Message')
exports.Presence = require('./lib/Presence')

exports.Stanza = require('./lib/Stanza')
exports.createStanza = require('./lib/createStanza')

exports.parse = require('./lib/parse')
exports.Parser = require('./lib/Parser')
exports.tag = require('./lib/tag')

exports.ltx = ltx

},{"./lib/IQ":9,"./lib/Message":10,"./lib/Parser":11,"./lib/Presence":12,"./lib/Stanza":13,"./lib/createStanza":14,"./lib/parse":15,"./lib/tag":16,"ltx":90}],9:[function(require,module,exports){
'use strict'

var Stanza = require('./Stanza')
var inherits = require('inherits')

function IQ (attrs) {
  Stanza.call(this, 'iq', attrs)
}

inherits(IQ, Stanza)

module.exports = IQ

},{"./Stanza":13,"inherits":85}],10:[function(require,module,exports){
'use strict'

var Stanza = require('./Stanza')
var inherits = require('inherits')

function Message (attrs) {
  Stanza.call(this, 'message', attrs)
}

inherits(Message, Stanza)

module.exports = Message

},{"./Stanza":13,"inherits":85}],11:[function(require,module,exports){
'use strict'

var inherits = require('inherits')
var createStanza = require('./createStanza')
var LtxParser = require('ltx').Parser

function Parser (options) {
  LtxParser.call(this, options)
}
inherits(Parser, LtxParser)

Parser.prototype.DefaultElement = createStanza

module.exports = Parser

},{"./createStanza":14,"inherits":85,"ltx":90}],12:[function(require,module,exports){
'use strict'

var Stanza = require('./Stanza')
var inherits = require('inherits')

function Presence (attrs) {
  Stanza.call(this, 'presence', attrs)
}

inherits(Presence, Stanza)

module.exports = Presence

},{"./Stanza":13,"inherits":85}],13:[function(require,module,exports){
'use strict'

var inherits = require('inherits')
var Element = require('ltx').Element

function Stanza (name, attrs) {
  Element.call(this, name, attrs)
}

inherits(Stanza, Element)

/**
 * Common attribute getters/setters to all stanzas
 * http://xmpp.org/rfcs/rfc6120.html#stanzas-attributes
 */

Object.defineProperty(Stanza.prototype, 'from', {
  get: function () {
    return this.attrs.from
  },
  set: function (from) {
    this.attrs.from = from
  }
})

Object.defineProperty(Stanza.prototype, 'to', {
  get: function () {
    return this.attrs.to
  },
  set: function (to) {
    this.attrs.to = to
  }
})

Object.defineProperty(Stanza.prototype, 'id', {
  get: function () {
    return this.attrs.id
  },
  set: function (id) {
    this.attrs.id = id
  }
})

Object.defineProperty(Stanza.prototype, 'type', {
  get: function () {
    return this.attrs.type
  },
  set: function (type) {
    this.attrs.type = type
  }
})

module.exports = Stanza

},{"inherits":85,"ltx":90}],14:[function(require,module,exports){
'use strict'

var Stanza = require('./Stanza')
var Element = require('ltx').Element

/**
 * JSX compatible API, use this function as pragma
 * https://facebook.github.io/jsx/
 * Returns a Stanza if name is presence, message or iq an ltx Element otherwise.
 *
 * @param  {string} name  name of the element
 * @param  {object} attrs object of attribute key/value pairs
 * @return {Element}      Stanza or Element
 */
module.exports = function createStanza (name, attrs /*, child1, child2, ... */) {
  var el

  switch (name) {
    case 'presence':
    case 'message':
    case 'iq':
      el = new Stanza(name, attrs)
      break
    default:
      el = new Element(name, attrs)
  }

  var children = Array.prototype.slice.call(arguments, 2)

  children.forEach(function (child) {
    el.cnode(child)
  })
  return el
}

},{"./Stanza":13,"ltx":90}],15:[function(require,module,exports){
'use strict'

var Parser = require('./Parser')
var ltxParse = require('ltx').parse

module.exports = function parse (data) {
  return ltxParse(data, Parser)
}

},{"./Parser":11,"ltx":90}],16:[function(require,module,exports){
'use strict'

var tagString = require('ltx').tagString
var parse = require('./parse')

module.exports = function tag (/* [literals], ...substitutions */) {
  return parse(tagString.apply(null, arguments))
}

},{"./parse":15,"ltx":90}],17:[function(require,module,exports){
(function (global){(function (){
'use strict';

var objectAssign = require('object-assign');

// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
// original notice:

/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
function compare(a, b) {
  if (a === b) {
    return 0;
  }

  var x = a.length;
  var y = b.length;

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i];
      y = b[i];
      break;
    }
  }

  if (x < y) {
    return -1;
  }
  if (y < x) {
    return 1;
  }
  return 0;
}
function isBuffer(b) {
  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
    return global.Buffer.isBuffer(b);
  }
  return !!(b != null && b._isBuffer);
}

// based on node assert, original notice:
// NB: The URL to the CommonJS spec is kept just for tradition.
//     node-assert has evolved a lot since then, both in API and behavior.

// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

var util = require('util/');
var hasOwn = Object.prototype.hasOwnProperty;
var pSlice = Array.prototype.slice;
var functionsHaveNames = (function () {
  return function foo() {}.name === 'foo';
}());
function pToString (obj) {
  return Object.prototype.toString.call(obj);
}
function isView(arrbuf) {
  if (isBuffer(arrbuf)) {
    return false;
  }
  if (typeof global.ArrayBuffer !== 'function') {
    return false;
  }
  if (typeof ArrayBuffer.isView === 'function') {
    return ArrayBuffer.isView(arrbuf);
  }
  if (!arrbuf) {
    return false;
  }
  if (arrbuf instanceof DataView) {
    return true;
  }
  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
    return true;
  }
  return false;
}
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

var regex = /\s*function\s+([^\(\s]*)\s*/;
// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
function getName(func) {
  if (!util.isFunction(func)) {
    return;
  }
  if (functionsHaveNames) {
    return func.name;
  }
  var str = func.toString();
  var match = str.match(regex);
  return match && match[1];
}
assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  } else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = getName(stackStartFunction);
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function truncate(s, n) {
  if (typeof s === 'string') {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}
function inspect(something) {
  if (functionsHaveNames || !util.isFunction(something)) {
    return util.inspect(something);
  }
  var rawname = getName(something);
  var name = rawname ? ': ' + rawname : '';
  return '[Function' +  name + ']';
}
function getMessage(self) {
  return truncate(inspect(self.actual), 128) + ' ' +
         self.operator + ' ' +
         truncate(inspect(self.expected), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
  }
};

function _deepEqual(actual, expected, strict, memos) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;
  } else if (isBuffer(actual) && isBuffer(expected)) {
    return compare(actual, expected) === 0;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if ((actual === null || typeof actual !== 'object') &&
             (expected === null || typeof expected !== 'object')) {
    return strict ? actual === expected : actual == expected;

  // If both values are instances of typed arrays, wrap their underlying
  // ArrayBuffers in a Buffer each to increase performance
  // This optimization requires the arrays to have the same type as checked by
  // Object.prototype.toString (aka pToString). Never perform binary
  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
  // bit patterns are not identical.
  } else if (isView(actual) && isView(expected) &&
             pToString(actual) === pToString(expected) &&
             !(actual instanceof Float32Array ||
               actual instanceof Float64Array)) {
    return compare(new Uint8Array(actual.buffer),
                   new Uint8Array(expected.buffer)) === 0;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else if (isBuffer(actual) !== isBuffer(expected)) {
    return false;
  } else {
    memos = memos || {actual: [], expected: []};

    var actualIndex = memos.actual.indexOf(actual);
    if (actualIndex !== -1) {
      if (actualIndex === memos.expected.indexOf(expected)) {
        return true;
      }
    }

    memos.actual.push(actual);
    memos.expected.push(expected);

    return objEquiv(actual, expected, strict, memos);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b, strict, actualVisitedObjects) {
  if (a === null || a === undefined || b === null || b === undefined)
    return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b))
    return a === b;
  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
    return false;
  var aIsArgs = isArguments(a);
  var bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b, strict);
  }
  var ka = objectKeys(a);
  var kb = objectKeys(b);
  var key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length !== kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] !== kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
      return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
  }
}


// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  }

  try {
    if (actual instanceof expected) {
      return true;
    }
  } catch (e) {
    // Ignore.  The instanceof check doesn't work for arrow functions.
  }

  if (Error.isPrototypeOf(expected)) {
    return false;
  }

  return expected.call({}, actual) === true;
}

function _tryBlock(block) {
  var error;
  try {
    block();
  } catch (e) {
    error = e;
  }
  return error;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (typeof block !== 'function') {
    throw new TypeError('"block" argument must be a function');
  }

  if (typeof expected === 'string') {
    message = expected;
    expected = null;
  }

  actual = _tryBlock(block);

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  var userProvidedMessage = typeof message === 'string';
  var isUnwantedException = !shouldThrow && util.isError(actual);
  var isUnexpectedException = !shouldThrow && actual && !expected;

  if ((isUnwantedException &&
      userProvidedMessage &&
      expectedException(actual, expected)) ||
      isUnexpectedException) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws(true, block, error, message);
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
  _throws(false, block, error, message);
};

assert.ifError = function(err) { if (err) throw err; };

// Expose a strict only variant of assert
function strict(value, message) {
  if (!value) fail(value, true, message, '==', strict);
}
assert.strict = objectAssign(strict, assert, {
  equal: assert.strictEqual,
  deepEqual: assert.deepStrictEqual,
  notEqual: assert.notStrictEqual,
  notDeepEqual: assert.notDeepStrictEqual
});
assert.strict.strict = assert.strict;

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"object-assign":138,"util/":20}],18:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],19:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],20:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":19,"_process":152,"inherits":18}],21:[function(require,module,exports){
/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var Backoff = require('./lib/backoff');
var ExponentialBackoffStrategy = require('./lib/strategy/exponential');
var FibonacciBackoffStrategy = require('./lib/strategy/fibonacci');
var FunctionCall = require('./lib/function_call.js');

module.exports.Backoff = Backoff;
module.exports.FunctionCall = FunctionCall;
module.exports.FibonacciStrategy = FibonacciBackoffStrategy;
module.exports.ExponentialStrategy = ExponentialBackoffStrategy;

/**
 * Constructs a Fibonacci backoff.
 * @param options Fibonacci backoff strategy arguments.
 * @return The fibonacci backoff.
 * @see FibonacciBackoffStrategy
 */
module.exports.fibonacci = function(options) {
    return new Backoff(new FibonacciBackoffStrategy(options));
};

/**
 * Constructs an exponential backoff.
 * @param options Exponential strategy arguments.
 * @return The exponential backoff.
 * @see ExponentialBackoffStrategy
 */
module.exports.exponential = function(options) {
    return new Backoff(new ExponentialBackoffStrategy(options));
};

/**
 * Constructs a FunctionCall for the given function and arguments.
 * @param fn The function to wrap in a backoff handler.
 * @param vargs The function's arguments (var args).
 * @param callback The function's callback.
 * @return The FunctionCall instance.
 */
module.exports.call = function(fn, vargs, callback) {
    var args = Array.prototype.slice.call(arguments);
    fn = args[0];
    vargs = args.slice(1, args.length - 1);
    callback = args[args.length - 1];
    return new FunctionCall(fn, vargs, callback);
};

},{"./lib/backoff":22,"./lib/function_call.js":23,"./lib/strategy/exponential":24,"./lib/strategy/fibonacci":25}],22:[function(require,module,exports){
/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var events = require('events');
var util = require('util');

/**
 * Backoff driver.
 * @param backoffStrategy Backoff delay generator/strategy.
 * @constructor
 */
function Backoff(backoffStrategy) {
    events.EventEmitter.call(this);

    this.backoffStrategy_ = backoffStrategy;
    this.maxNumberOfRetry_ = -1;
    this.backoffNumber_ = 0;
    this.backoffDelay_ = 0;
    this.timeoutID_ = -1;

    this.handlers = {
        backoff: this.onBackoff_.bind(this)
    };
}
util.inherits(Backoff, events.EventEmitter);

/**
 * Sets a limit, greater than 0, on the maximum number of backoffs. A 'fail'
 * event will be emitted when the limit is reached.
 * @param maxNumberOfRetry The maximum number of backoffs.
 */
Backoff.prototype.failAfter = function(maxNumberOfRetry) {
    if (maxNumberOfRetry < 1) {
        throw new Error('Maximum number of retry must be greater than 0. ' +
                        'Actual: ' + maxNumberOfRetry);
    }

    this.maxNumberOfRetry_ = maxNumberOfRetry;
};

/**
 * Starts a backoff operation.
 * @param err Optional paramater to let the listeners know why the backoff
 *     operation was started.
 */
Backoff.prototype.backoff = function(err) {
    if (this.timeoutID_ !== -1) {
        throw new Error('Backoff in progress.');
    }

    if (this.backoffNumber_ === this.maxNumberOfRetry_) {
        this.emit('fail', err);
        this.reset();
    } else {
        this.backoffDelay_ = this.backoffStrategy_.next();
        this.timeoutID_ = setTimeout(this.handlers.backoff, this.backoffDelay_);
        this.emit('backoff', this.backoffNumber_, this.backoffDelay_, err);
    }
};

/**
 * Handles the backoff timeout completion.
 * @private
 */
Backoff.prototype.onBackoff_ = function() {
    this.timeoutID_ = -1;
    this.emit('ready', this.backoffNumber_, this.backoffDelay_);
    this.backoffNumber_++;
};

/**
 * Stops any backoff operation and resets the backoff delay to its inital
 * value.
 */
Backoff.prototype.reset = function() {
    this.backoffNumber_ = 0;
    this.backoffStrategy_.reset();
    clearTimeout(this.timeoutID_);
    this.timeoutID_ = -1;
};

module.exports = Backoff;

},{"events":80,"util":217}],23:[function(require,module,exports){
/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var events = require('events');
var util = require('util');

var Backoff = require('./backoff');
var FibonacciBackoffStrategy = require('./strategy/fibonacci');

/**
 * Returns true if the specified value is a function
 * @param val Variable to test.
 * @return Whether variable is a function.
 */
function isFunction(val) {
    return typeof val == 'function';
}

/**
 * Manages the calling of a function in a backoff loop.
 * @param fn Function to wrap in a backoff handler.
 * @param args Array of function's arguments.
 * @param callback Function's callback.
 * @constructor
 */
function FunctionCall(fn, args, callback) {
    events.EventEmitter.call(this);

    if (!isFunction(fn)) {
        throw new Error('fn should be a function.' +
                        'Actual: ' + typeof fn);
    }

    if (!isFunction(callback)) {
        throw new Error('callback should be a function.' +
                        'Actual: ' + typeof fn);
    }

    this.function_ = fn;
    this.arguments_ = args;
    this.callback_ = callback;
    this.results_ = [];

    this.backoff_ = null;
    this.strategy_ = null;
    this.failAfter_ = -1;

    this.state_ = FunctionCall.State_.PENDING;
}
util.inherits(FunctionCall, events.EventEmitter);

/**
 * Enum of states in which the FunctionCall can be.
 * @private
 */
FunctionCall.State_ = {
    PENDING: 0,
    RUNNING: 1,
    COMPLETED: 2,
    ABORTED: 3
};

/**
 * @return Whether the call is pending.
 */
FunctionCall.prototype.isPending = function() {
    return this.state_ == FunctionCall.State_.PENDING;
};

/**
 * @return Whether the call is in progress.
 */
FunctionCall.prototype.isRunning = function() {
    return this.state_ == FunctionCall.State_.RUNNING;
};

/**
 * @return Whether the call is completed.
 */
FunctionCall.prototype.isCompleted = function() {
    return this.state_ == FunctionCall.State_.COMPLETED;
};

/**
 * @return Whether the call is aborted.
 */
FunctionCall.prototype.isAborted = function() {
    return this.state_ == FunctionCall.State_.ABORTED;
};

/**
 * Sets the backoff strategy.
 * @param strategy The backoff strategy to use.
 * @return Itself for chaining.
 */
FunctionCall.prototype.setStrategy = function(strategy) {
    if (!this.isPending()) {
        throw new Error('FunctionCall in progress.');
    }
    this.strategy_ = strategy;
    return this;
};

/**
 * Returns all intermediary results returned by the wrapped function since
 * the initial call.
 * @return An array of intermediary results.
 */
FunctionCall.prototype.getResults = function() {
    return this.results_.concat();
};

/**
 * Sets the backoff limit.
 * @param maxNumberOfRetry The maximum number of backoffs.
 * @return Itself for chaining.
 */
FunctionCall.prototype.failAfter = function(maxNumberOfRetry) {
    if (!this.isPending()) {
        throw new Error('FunctionCall in progress.');
    }
    this.failAfter_ = maxNumberOfRetry;
    return this;
};

/**
 * Aborts the call.
 */
FunctionCall.prototype.abort = function() {
    if (this.isCompleted()) {
        throw new Error('FunctionCall already completed.');
    }

    if (this.isRunning()) {
        this.backoff_.reset();
    }

    this.state_ = FunctionCall.State_.ABORTED;
};

/**
 * Initiates the call to the wrapped function.
 * @param backoffFactory Optional factory function used to create the backoff
 *     instance.
 */
FunctionCall.prototype.start = function(backoffFactory) {
    if (this.isAborted()) {
        throw new Error('FunctionCall aborted.');
    } else if (!this.isPending()) {
        throw new Error('FunctionCall already started.');
    }

    var strategy = this.strategy_ || new FibonacciBackoffStrategy();

    this.backoff_ = backoffFactory ?
        backoffFactory(strategy) :
        new Backoff(strategy);

    this.backoff_.on('ready', this.doCall_.bind(this));
    this.backoff_.on('fail', this.doCallback_.bind(this));
    this.backoff_.on('backoff', this.handleBackoff_.bind(this));

    if (this.failAfter_ > 0) {
        this.backoff_.failAfter(this.failAfter_);
    }

    this.state_ = FunctionCall.State_.RUNNING;
    this.doCall_();
};

/**
 * Calls the wrapped function.
 * @private
 */
FunctionCall.prototype.doCall_ = function() {
    var eventArgs = ['call'].concat(this.arguments_);
    events.EventEmitter.prototype.emit.apply(this, eventArgs);
    var callback = this.handleFunctionCallback_.bind(this);
    this.function_.apply(null, this.arguments_.concat(callback));
};

/**
 * Calls the wrapped function's callback with the last result returned by the
 * wrapped function.
 * @private
 */
FunctionCall.prototype.doCallback_ = function() {
    var args = this.results_[this.results_.length - 1];
    this.callback_.apply(null, args);
};

/**
 * Handles wrapped function's completion. This method acts as a replacement
 * for the original callback function.
 * @private
 */
FunctionCall.prototype.handleFunctionCallback_ = function() {
    if (this.isAborted()) {
        return;
    }

    var args = Array.prototype.slice.call(arguments);
    this.results_.push(args); // Save callback arguments.
    events.EventEmitter.prototype.emit.apply(this, ['callback'].concat(args));

    if (args[0]) {
        this.backoff_.backoff(args[0]);
    } else {
        this.state_ = FunctionCall.State_.COMPLETED;
        this.doCallback_();
    }
};

/**
 * Handles backoff event.
 * @param number Backoff number.
 * @param delay Backoff delay.
 * @param err The error that caused the backoff.
 * @private
 */
FunctionCall.prototype.handleBackoff_ = function(number, delay, err) {
    this.emit('backoff', number, delay, err);
};

module.exports = FunctionCall;

},{"./backoff":22,"./strategy/fibonacci":25,"events":80,"util":217}],24:[function(require,module,exports){
/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var util = require('util');

var BackoffStrategy = require('./strategy');

/**
 * Exponential backoff strategy.
 * @extends BackoffStrategy
 */
function ExponentialBackoffStrategy(options) {
    BackoffStrategy.call(this, options);
    this.backoffDelay_ = 0;
    this.nextBackoffDelay_ = this.getInitialDelay();
}
util.inherits(ExponentialBackoffStrategy, BackoffStrategy);

/** @inheritDoc */
ExponentialBackoffStrategy.prototype.next_ = function() {
    this.backoffDelay_ = Math.min(this.nextBackoffDelay_, this.getMaxDelay());
    this.nextBackoffDelay_ = this.backoffDelay_ * 2;
    return this.backoffDelay_;
};

/** @inheritDoc */
ExponentialBackoffStrategy.prototype.reset_ = function() {
    this.backoffDelay_ = 0;
    this.nextBackoffDelay_ = this.getInitialDelay();
};

module.exports = ExponentialBackoffStrategy;

},{"./strategy":26,"util":217}],25:[function(require,module,exports){
/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var util = require('util');

var BackoffStrategy = require('./strategy');

/**
 * Fibonacci backoff strategy.
 * @extends BackoffStrategy
 */
function FibonacciBackoffStrategy(options) {
    BackoffStrategy.call(this, options);
    this.backoffDelay_ = 0;
    this.nextBackoffDelay_ = this.getInitialDelay();
}
util.inherits(FibonacciBackoffStrategy, BackoffStrategy);

/** @inheritDoc */
FibonacciBackoffStrategy.prototype.next_ = function() {
    var backoffDelay = Math.min(this.nextBackoffDelay_, this.getMaxDelay());
    this.nextBackoffDelay_ += this.backoffDelay_;
    this.backoffDelay_ = backoffDelay;
    return backoffDelay;
};

/** @inheritDoc */
FibonacciBackoffStrategy.prototype.reset_ = function() {
    this.nextBackoffDelay_ = this.getInitialDelay();
    this.backoffDelay_ = 0;
};

module.exports = FibonacciBackoffStrategy;

},{"./strategy":26,"util":217}],26:[function(require,module,exports){
/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var events = require('events');
var util = require('util');

function isDef(value) {
    return value !== undefined && value !== null;
}

/**
 * Abstract class defining the skeleton for all backoff strategies.
 * @param options Backoff strategy options.
 * @param options.randomisationFactor The randomisation factor, must be between
 * 0 and 1.
 * @param options.initialDelay The backoff initial delay, in milliseconds.
 * @param options.maxDelay The backoff maximal delay, in milliseconds.
 * @constructor
 */
function BackoffStrategy(options) {
    options = options || {};

    if (isDef(options.initialDelay) && options.initialDelay < 1) {
        throw new Error('The initial timeout must be greater than 0.');
    } else if (isDef(options.maxDelay) && options.maxDelay < 1) {
        throw new Error('The maximal timeout must be greater than 0.');
    }

    this.initialDelay_ = options.initialDelay || 100;
    this.maxDelay_ = options.maxDelay || 10000;

    if (this.maxDelay_ <= this.initialDelay_) {
        throw new Error('The maximal backoff delay must be ' +
                        'greater than the initial backoff delay.');
    }

    if (isDef(options.randomisationFactor) &&
        (options.randomisationFactor < 0 || options.randomisationFactor > 1)) {
        throw new Error('The randomisation factor must be between 0 and 1.');
    }

    this.randomisationFactor_ = options.randomisationFactor || 0;
}

/**
 * Retrieves the maximal backoff delay.
 * @return The maximal backoff delay, in milliseconds.
 */
BackoffStrategy.prototype.getMaxDelay = function() {
    return this.maxDelay_;
};

/**
 * Retrieves the initial backoff delay.
 * @return The initial backoff delay, in milliseconds.
 */
BackoffStrategy.prototype.getInitialDelay = function() {
    return this.initialDelay_;
};

/**
 * Template method that computes the next backoff delay.
 * @return The backoff delay, in milliseconds.
 */
BackoffStrategy.prototype.next = function() {
    var backoffDelay = this.next_();
    var randomisationMultiple = 1 + Math.random() * this.randomisationFactor_;
    var randomizedDelay = Math.round(backoffDelay * randomisationMultiple);
    return randomizedDelay;
};

/**
 * Computes the next backoff delay.
 * @return The backoff delay, in milliseconds.
 * @protected
 */
BackoffStrategy.prototype.next_ = function() {
    throw new Error('BackoffStrategy.next_() unimplemented.');
};

/**
 * Template method that resets the backoff delay to its initial value.
 */
BackoffStrategy.prototype.reset = function() {
    this.reset_();
};

/**
 * Resets the backoff delay to its initial value.
 * @protected
 */
BackoffStrategy.prototype.reset_ = function() {
    throw new Error('BackoffStrategy.reset_() unimplemented.');
};

module.exports = BackoffStrategy;

},{"events":80,"util":217}],27:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function placeHoldersCount (b64) {
  var len = b64.length
  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // the number of equal signs (place holders)
  // if there are two placeholders, than the two characters before it
  // represent one byte
  // if there is only one, then the three characters before it represent 2 bytes
  // this is just a cheap hack to not do indexOf twice
  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
}

function byteLength (b64) {
  // base64 is 4/3 + up to two characters of the original data
  return b64.length * 3 / 4 - placeHoldersCount(b64)
}

function toByteArray (b64) {
  var i, j, l, tmp, placeHolders, arr
  var len = b64.length
  placeHolders = placeHoldersCount(b64)

  arr = new Arr(len * 3 / 4 - placeHolders)

  // if there are placeholders, only get up to the last complete 4 chars
  l = placeHolders > 0 ? len - 4 : len

  var L = 0

  for (i = 0, j = 0; i < l; i += 4, j += 3) {
    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
    arr[L++] = (tmp >> 16) & 0xFF
    arr[L++] = (tmp >> 8) & 0xFF
    arr[L++] = tmp & 0xFF
  }

  if (placeHolders === 2) {
    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[L++] = tmp & 0xFF
  } else if (placeHolders === 1) {
    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[L++] = (tmp >> 8) & 0xFF
    arr[L++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var output = ''
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    output += lookup[tmp >> 2]
    output += lookup[(tmp << 4) & 0x3F]
    output += '=='
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
    output += lookup[tmp >> 10]
    output += lookup[(tmp >> 4) & 0x3F]
    output += lookup[(tmp << 2) & 0x3F]
    output += '='
  }

  parts.push(output)

  return parts.join('')
}

},{}],28:[function(require,module,exports){
// Browser Request
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// UMD HEADER START 
(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define([], factory);
    } else if (typeof exports === 'object') {
        // Node. Does not work with strict CommonJS, but
        // only CommonJS-like enviroments that support module.exports,
        // like Node.
        module.exports = factory();
    } else {
        // Browser globals (root is window)
        root.returnExports = factory();
  }
}(this, function () {
// UMD HEADER END

var XHR = XMLHttpRequest
if (!XHR) throw new Error('missing XMLHttpRequest')
request.log = {
  'trace': noop, 'debug': noop, 'info': noop, 'warn': noop, 'error': noop
}

var DEFAULT_TIMEOUT = 3 * 60 * 1000 // 3 minutes

//
// request
//

function request(options, callback) {
  // The entry-point to the API: prep the options object and pass the real work to run_xhr.
  if(typeof callback !== 'function')
    throw new Error('Bad callback given: ' + callback)

  if(!options)
    throw new Error('No options given')

  var options_onResponse = options.onResponse; // Save this for later.

  if(typeof options === 'string')
    options = {'uri':options};
  else
    options = JSON.parse(JSON.stringify(options)); // Use a duplicate for mutating.

  options.onResponse = options_onResponse // And put it back.

  if (options.verbose) request.log = getLogger();

  if(options.url) {
    options.uri = options.url;
    delete options.url;
  }

  if(!options.uri && options.uri !== "")
    throw new Error("options.uri is a required argument");

  if(typeof options.uri != "string")
    throw new Error("options.uri must be a string");

  var unsupported_options = ['proxy', '_redirectsFollowed', 'maxRedirects', 'followRedirect']
  for (var i = 0; i < unsupported_options.length; i++)
    if(options[ unsupported_options[i] ])
      throw new Error("options." + unsupported_options[i] + " is not supported")

  options.callback = callback
  options.method = options.method || 'GET';
  options.headers = options.headers || {};
  options.body    = options.body || null
  options.timeout = options.timeout || request.DEFAULT_TIMEOUT

  if(options.headers.host)
    throw new Error("Options.headers.host is not supported");

  if(options.json) {
    options.headers.accept = options.headers.accept || 'application/json'
    if(options.method !== 'GET')
      options.headers['content-type'] = 'application/json'

    if(typeof options.json !== 'boolean')
      options.body = JSON.stringify(options.json)
    else if(typeof options.body !== 'string')
      options.body = JSON.stringify(options.body)
  }
  
  //BEGIN QS Hack
  var serialize = function(obj) {
    var str = [];
    for(var p in obj)
      if (obj.hasOwnProperty(p)) {
        str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
      }
    return str.join("&");
  }
  
  if(options.qs){
    var qs = (typeof options.qs == 'string')? options.qs : serialize(options.qs);
    if(options.uri.indexOf('?') !== -1){ //no get params
        options.uri = options.uri+'&'+qs;
    }else{ //existing get params
        options.uri = options.uri+'?'+qs;
    }
  }
  //END QS Hack
  
  //BEGIN FORM Hack
  var multipart = function(obj) {
    //todo: support file type (useful?)
    var result = {};
    result.boundry = '-------------------------------'+Math.floor(Math.random()*1000000000);
    var lines = [];
    for(var p in obj){
        if (obj.hasOwnProperty(p)) {
            lines.push(
                '--'+result.boundry+"\n"+
                'Content-Disposition: form-data; name="'+p+'"'+"\n"+
                "\n"+
                obj[p]+"\n"
            );
        }
    }
    lines.push( '--'+result.boundry+'--' );
    result.body = lines.join('');
    result.length = result.body.length;
    result.type = 'multipart/form-data; boundary='+result.boundry;
    return result;
  }
  
  if(options.form){
    if(typeof options.form == 'string') throw('form name unsupported');
    if(options.method === 'POST'){
        var encoding = (options.encoding || 'application/x-www-form-urlencoded').toLowerCase();
        options.headers['content-type'] = encoding;
        switch(encoding){
            case 'application/x-www-form-urlencoded':
                options.body = serialize(options.form).replace(/%20/g, "+");
                break;
            case 'multipart/form-data':
                var multi = multipart(options.form);
                //options.headers['content-length'] = multi.length;
                options.body = multi.body;
                options.headers['content-type'] = multi.type;
                break;
            default : throw new Error('unsupported encoding:'+encoding);
        }
    }
  }
  //END FORM Hack

  // If onResponse is boolean true, call back immediately when the response is known,
  // not when the full request is complete.
  options.onResponse = options.onResponse || noop
  if(options.onResponse === true) {
    options.onResponse = callback
    options.callback = noop
  }

  // XXX Browsers do not like this.
  //if(options.body)
  //  options.headers['content-length'] = options.body.length;

  // HTTP basic authentication
  if(!options.headers.authorization && options.auth)
    options.headers.authorization = 'Basic ' + b64_enc(options.auth.username + ':' + options.auth.password);

  return run_xhr(options)
}

var req_seq = 0
function run_xhr(options) {
  var xhr = new XHR
    , timed_out = false
    , is_cors = is_crossDomain(options.uri)
    , supports_cors = ('withCredentials' in xhr)

  req_seq += 1
  xhr.seq_id = req_seq
  xhr.id = req_seq + ': ' + options.method + ' ' + options.uri
  xhr._id = xhr.id // I know I will type "_id" from habit all the time.

  if(is_cors && !supports_cors) {
    var cors_err = new Error('Browser does not support cross-origin request: ' + options.uri)
    cors_err.cors = 'unsupported'
    return options.callback(cors_err, xhr)
  }

  xhr.timeoutTimer = setTimeout(too_late, options.timeout)
  function too_late() {
    timed_out = true
    var er = new Error('ETIMEDOUT')
    er.code = 'ETIMEDOUT'
    er.duration = options.timeout

    request.log.error('Timeout', { 'id':xhr._id, 'milliseconds':options.timeout })
    return options.callback(er, xhr)
  }

  // Some states can be skipped over, so remember what is still incomplete.
  var did = {'response':false, 'loading':false, 'end':false}

  xhr.onreadystatechange = on_state_change
  xhr.open(options.method, options.uri, true) // asynchronous
  if(is_cors)
    xhr.withCredentials = !! options.withCredentials
  xhr.send(options.body)
  return xhr

  function on_state_change(event) {
    if(timed_out)
      return request.log.debug('Ignoring timed out state change', {'state':xhr.readyState, 'id':xhr.id})

    request.log.debug('State change', {'state':xhr.readyState, 'id':xhr.id, 'timed_out':timed_out})

    if(xhr.readyState === XHR.OPENED) {
      request.log.debug('Request started', {'id':xhr.id})
      for (var key in options.headers)
        xhr.setRequestHeader(key, options.headers[key])
    }

    else if(xhr.readyState === XHR.HEADERS_RECEIVED)
      on_response()

    else if(xhr.readyState === XHR.LOADING) {
      on_response()
      on_loading()
    }

    else if(xhr.readyState === XHR.DONE) {
      on_response()
      on_loading()
      on_end()
    }
  }

  function on_response() {
    if(did.response)
      return

    did.response = true
    request.log.debug('Got response', {'id':xhr.id, 'status':xhr.status})
    clearTimeout(xhr.timeoutTimer)
    xhr.statusCode = xhr.status // Node request compatibility

    // Detect failed CORS requests.
    if(is_cors && xhr.statusCode == 0) {
      var cors_err = new Error('CORS request rejected: ' + options.uri)
      cors_err.cors = 'rejected'

      // Do not process this request further.
      did.loading = true
      did.end = true

      return options.callback(cors_err, xhr)
    }

    options.onResponse(null, xhr)
  }

  function on_loading() {
    if(did.loading)
      return

    did.loading = true
    request.log.debug('Response body loading', {'id':xhr.id})
    // TODO: Maybe simulate "data" events by watching xhr.responseText
  }

  function on_end() {
    if(did.end)
      return

    did.end = true
    request.log.debug('Request done', {'id':xhr.id})

    xhr.body = xhr.responseText
    if(options.json) {
      try        { xhr.body = JSON.parse(xhr.responseText) }
      catch (er) { return options.callback(er, xhr)        }
    }

    options.callback(null, xhr, xhr.body)
  }

} // request

request.withCredentials = false;
request.DEFAULT_TIMEOUT = DEFAULT_TIMEOUT;

//
// defaults
//

request.defaults = function(options, requester) {
  var def = function (method) {
    var d = function (params, callback) {
      if(typeof params === 'string')
        params = {'uri': params};
      else {
        params = JSON.parse(JSON.stringify(params));
      }
      for (var i in options) {
        if (params[i] === undefined) params[i] = options[i]
      }
      return method(params, callback)
    }
    return d
  }
  var de = def(request)
  de.get = def(request.get)
  de.post = def(request.post)
  de.put = def(request.put)
  de.head = def(request.head)
  return de
}

//
// HTTP method shortcuts
//

var shortcuts = [ 'get', 'put', 'post', 'head' ];
shortcuts.forEach(function(shortcut) {
  var method = shortcut.toUpperCase();
  var func   = shortcut.toLowerCase();

  request[func] = function(opts) {
    if(typeof opts === 'string')
      opts = {'method':method, 'uri':opts};
    else {
      opts = JSON.parse(JSON.stringify(opts));
      opts.method = method;
    }

    var args = [opts].concat(Array.prototype.slice.apply(arguments, [1]));
    return request.apply(this, args);
  }
})

//
// CouchDB shortcut
//

request.couch = function(options, callback) {
  if(typeof options === 'string')
    options = {'uri':options}

  // Just use the request API to do JSON.
  options.json = true
  if(options.body)
    options.json = options.body
  delete options.body

  callback = callback || noop

  var xhr = request(options, couch_handler)
  return xhr

  function couch_handler(er, resp, body) {
    if(er)
      return callback(er, resp, body)

    if((resp.statusCode < 200 || resp.statusCode > 299) && body.error) {
      // The body is a Couch JSON object indicating the error.
      er = new Error('CouchDB error: ' + (body.error.reason || body.error.error))
      for (var key in body)
        er[key] = body[key]
      return callback(er, resp, body);
    }

    return callback(er, resp, body);
  }
}

//
// Utility
//

function noop() {}

function getLogger() {
  var logger = {}
    , levels = ['trace', 'debug', 'info', 'warn', 'error']
    , level, i

  for(i = 0; i < levels.length; i++) {
    level = levels[i]

    logger[level] = noop
    if(typeof console !== 'undefined' && console && console[level])
      logger[level] = formatted(console, level)
  }

  return logger
}

function formatted(obj, method) {
  return formatted_logger

  function formatted_logger(str, context) {
    if(typeof context === 'object')
      str += ' ' + JSON.stringify(context)

    return obj[method].call(obj, str)
  }
}

// Return whether a URL is a cross-domain request.
function is_crossDomain(url) {
  var rurl = /^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+))?)?/

  // jQuery #8138, IE may throw an exception when accessing
  // a field from window.location if document.domain has been set
  var ajaxLocation
  try { ajaxLocation = location.href }
  catch (e) {
    // Use the href attribute of an A element since IE will modify it given document.location
    ajaxLocation = document.createElement( "a" );
    ajaxLocation.href = "";
    ajaxLocation = ajaxLocation.href;
  }

  var ajaxLocParts = rurl.exec(ajaxLocation.toLowerCase()) || []
    , parts = rurl.exec(url.toLowerCase() )

  var result = !!(
    parts &&
    (  parts[1] != ajaxLocParts[1]
    || parts[2] != ajaxLocParts[2]
    || (parts[3] || (parts[1] === "http:" ? 80 : 443)) != (ajaxLocParts[3] || (ajaxLocParts[1] === "http:" ? 80 : 443))
    )
  )

  //console.debug('is_crossDomain('+url+') -> ' + result)
  return result
}

// MIT License from http://phpjs.org/functions/base64_encode:358
function b64_enc (data) {
    // Encodes string using MIME base64 algorithm
    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var o1, o2, o3, h1, h2, h3, h4, bits, i = 0, ac = 0, enc="", tmp_arr = [];

    if (!data) {
        return data;
    }

    // assume utf8 data
    // data = this.utf8_encode(data+'');

    do { // pack three octets into four hexets
        o1 = data.charCodeAt(i++);
        o2 = data.charCodeAt(i++);
        o3 = data.charCodeAt(i++);

        bits = o1<<16 | o2<<8 | o3;

        h1 = bits>>18 & 0x3f;
        h2 = bits>>12 & 0x3f;
        h3 = bits>>6 & 0x3f;
        h4 = bits & 0x3f;

        // use hexets to index into b64, and append result to encoded string
        tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
    } while (i < data.length);

    enc = tmp_arr.join('');

    switch (data.length % 3) {
        case 1:
            enc = enc.slice(0, -2) + '==';
        break;
        case 2:
            enc = enc.slice(0, -1) + '=';
        break;
    }

    return enc;
}
    return request;
//UMD FOOTER START
}));
//UMD FOOTER END

},{}],29:[function(require,module,exports){

},{}],30:[function(require,module,exports){
(function (process,Buffer){(function (){
var msg = require('pako/lib/zlib/messages');
var zstream = require('pako/lib/zlib/zstream');
var zlib_deflate = require('pako/lib/zlib/deflate.js');
var zlib_inflate = require('pako/lib/zlib/inflate.js');
var constants = require('pako/lib/zlib/constants');

for (var key in constants) {
  exports[key] = constants[key];
}

// zlib modes
exports.NONE = 0;
exports.DEFLATE = 1;
exports.INFLATE = 2;
exports.GZIP = 3;
exports.GUNZIP = 4;
exports.DEFLATERAW = 5;
exports.INFLATERAW = 6;
exports.UNZIP = 7;

/**
 * Emulate Node's zlib C++ layer for use by the JS layer in index.js
 */
function Zlib(mode) {
  if (mode < exports.DEFLATE || mode > exports.UNZIP)
    throw new TypeError("Bad argument");
    
  this.mode = mode;
  this.init_done = false;
  this.write_in_progress = false;
  this.pending_close = false;
  this.windowBits = 0;
  this.level = 0;
  this.memLevel = 0;
  this.strategy = 0;
  this.dictionary = null;
}

Zlib.prototype.init = function(windowBits, level, memLevel, strategy, dictionary) {
  this.windowBits = windowBits;
  this.level = level;
  this.memLevel = memLevel;
  this.strategy = strategy;
  // dictionary not supported.
  
  if (this.mode === exports.GZIP || this.mode === exports.GUNZIP)
    this.windowBits += 16;
    
  if (this.mode === exports.UNZIP)
    this.windowBits += 32;
    
  if (this.mode === exports.DEFLATERAW || this.mode === exports.INFLATERAW)
    this.windowBits = -this.windowBits;
    
  this.strm = new zstream();
  
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.GZIP:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflateInit2(
        this.strm,
        this.level,
        exports.Z_DEFLATED,
        this.windowBits,
        this.memLevel,
        this.strategy
      );
      break;
    case exports.INFLATE:
    case exports.GUNZIP:
    case exports.INFLATERAW:
    case exports.UNZIP:
      var status  = zlib_inflate.inflateInit2(
        this.strm,
        this.windowBits
      );
      break;
    default:
      throw new Error("Unknown mode " + this.mode);
  }
  
  if (status !== exports.Z_OK) {
    this._error(status);
    return;
  }
  
  this.write_in_progress = false;
  this.init_done = true;
};

Zlib.prototype.params = function() {
  throw new Error("deflateParams Not supported");
};

Zlib.prototype._writeCheck = function() {
  if (!this.init_done)
    throw new Error("write before init");
    
  if (this.mode === exports.NONE)
    throw new Error("already finalized");
    
  if (this.write_in_progress)
    throw new Error("write already in progress");
    
  if (this.pending_close)
    throw new Error("close is pending");
};

Zlib.prototype.write = function(flush, input, in_off, in_len, out, out_off, out_len) {    
  this._writeCheck();
  this.write_in_progress = true;
  
  var self = this;
  process.nextTick(function() {
    self.write_in_progress = false;
    var res = self._write(flush, input, in_off, in_len, out, out_off, out_len);
    self.callback(res[0], res[1]);
    
    if (self.pending_close)
      self.close();
  });
  
  return this;
};

// set method for Node buffers, used by pako
function bufferSet(data, offset) {
  for (var i = 0; i < data.length; i++) {
    this[offset + i] = data[i];
  }
}

Zlib.prototype.writeSync = function(flush, input, in_off, in_len, out, out_off, out_len) {
  this._writeCheck();
  return this._write(flush, input, in_off, in_len, out, out_off, out_len);
};

Zlib.prototype._write = function(flush, input, in_off, in_len, out, out_off, out_len) {
  this.write_in_progress = true;
  
  if (flush !== exports.Z_NO_FLUSH &&
      flush !== exports.Z_PARTIAL_FLUSH &&
      flush !== exports.Z_SYNC_FLUSH &&
      flush !== exports.Z_FULL_FLUSH &&
      flush !== exports.Z_FINISH &&
      flush !== exports.Z_BLOCK) {
    throw new Error("Invalid flush value");
  }
  
  if (input == null) {
    input = new Buffer(0);
    in_len = 0;
    in_off = 0;
  }
  
  if (out._set)
    out.set = out._set;
  else
    out.set = bufferSet;
  
  var strm = this.strm;
  strm.avail_in = in_len;
  strm.input = input;
  strm.next_in = in_off;
  strm.avail_out = out_len;
  strm.output = out;
  strm.next_out = out_off;
  
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.GZIP:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflate(strm, flush);
      break;
    case exports.UNZIP:
    case exports.INFLATE:
    case exports.GUNZIP:
    case exports.INFLATERAW:
      var status = zlib_inflate.inflate(strm, flush);
      break;
    default:
      throw new Error("Unknown mode " + this.mode);
  }
  
  if (status !== exports.Z_STREAM_END && status !== exports.Z_OK) {
    this._error(status);
  }
  
  this.write_in_progress = false;
  return [strm.avail_in, strm.avail_out];
};

Zlib.prototype.close = function() {
  if (this.write_in_progress) {
    this.pending_close = true;
    return;
  }
  
  this.pending_close = false;
  
  if (this.mode === exports.DEFLATE || this.mode === exports.GZIP || this.mode === exports.DEFLATERAW) {
    zlib_deflate.deflateEnd(this.strm);
  } else {
    zlib_inflate.inflateEnd(this.strm);
  }
  
  this.mode = exports.NONE;
};

Zlib.prototype.reset = function() {
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflateReset(this.strm);
      break;
    case exports.INFLATE:
    case exports.INFLATERAW:
      var status = zlib_inflate.inflateReset(this.strm);
      break;
  }
  
  if (status !== exports.Z_OK) {
    this._error(status);
  }
};

Zlib.prototype._error = function(status) {
  this.onerror(msg[status] + ': ' + this.strm.msg, status);
  
  this.write_in_progress = false;
  if (this.pending_close)
    this.close();
};

exports.Zlib = Zlib;

}).call(this)}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":152,"buffer":47,"pako/lib/zlib/constants":142,"pako/lib/zlib/deflate.js":144,"pako/lib/zlib/inflate.js":146,"pako/lib/zlib/messages":148,"pako/lib/zlib/zstream":150}],31:[function(require,module,exports){
(function (process,Buffer){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Transform = require('_stream_transform');

var binding = require('./binding');
var util = require('util');
var assert = require('assert').ok;

// zlib doesn't provide these, so kludge them in following the same
// const naming scheme zlib uses.
binding.Z_MIN_WINDOWBITS = 8;
binding.Z_MAX_WINDOWBITS = 15;
binding.Z_DEFAULT_WINDOWBITS = 15;

// fewer than 64 bytes per chunk is stupid.
// technically it could work with as few as 8, but even 64 bytes
// is absurdly low.  Usually a MB or more is best.
binding.Z_MIN_CHUNK = 64;
binding.Z_MAX_CHUNK = Infinity;
binding.Z_DEFAULT_CHUNK = (16 * 1024);

binding.Z_MIN_MEMLEVEL = 1;
binding.Z_MAX_MEMLEVEL = 9;
binding.Z_DEFAULT_MEMLEVEL = 8;

binding.Z_MIN_LEVEL = -1;
binding.Z_MAX_LEVEL = 9;
binding.Z_DEFAULT_LEVEL = binding.Z_DEFAULT_COMPRESSION;

// expose all the zlib constants
Object.keys(binding).forEach(function(k) {
  if (k.match(/^Z/)) exports[k] = binding[k];
});

// translation table for return codes.
exports.codes = {
  Z_OK: binding.Z_OK,
  Z_STREAM_END: binding.Z_STREAM_END,
  Z_NEED_DICT: binding.Z_NEED_DICT,
  Z_ERRNO: binding.Z_ERRNO,
  Z_STREAM_ERROR: binding.Z_STREAM_ERROR,
  Z_DATA_ERROR: binding.Z_DATA_ERROR,
  Z_MEM_ERROR: binding.Z_MEM_ERROR,
  Z_BUF_ERROR: binding.Z_BUF_ERROR,
  Z_VERSION_ERROR: binding.Z_VERSION_ERROR
};

Object.keys(exports.codes).forEach(function(k) {
  exports.codes[exports.codes[k]] = k;
});

exports.Deflate = Deflate;
exports.Inflate = Inflate;
exports.Gzip = Gzip;
exports.Gunzip = Gunzip;
exports.DeflateRaw = DeflateRaw;
exports.InflateRaw = InflateRaw;
exports.Unzip = Unzip;

exports.createDeflate = function(o) {
  return new Deflate(o);
};

exports.createInflate = function(o) {
  return new Inflate(o);
};

exports.createDeflateRaw = function(o) {
  return new DeflateRaw(o);
};

exports.createInflateRaw = function(o) {
  return new InflateRaw(o);
};

exports.createGzip = function(o) {
  return new Gzip(o);
};

exports.createGunzip = function(o) {
  return new Gunzip(o);
};

exports.createUnzip = function(o) {
  return new Unzip(o);
};


// Convenience methods.
// compress/decompress a string or buffer in one step.
exports.deflate = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Deflate(opts), buffer, callback);
};

exports.deflateSync = function(buffer, opts) {
  return zlibBufferSync(new Deflate(opts), buffer);
};

exports.gzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Gzip(opts), buffer, callback);
};

exports.gzipSync = function(buffer, opts) {
  return zlibBufferSync(new Gzip(opts), buffer);
};

exports.deflateRaw = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new DeflateRaw(opts), buffer, callback);
};

exports.deflateRawSync = function(buffer, opts) {
  return zlibBufferSync(new DeflateRaw(opts), buffer);
};

exports.unzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Unzip(opts), buffer, callback);
};

exports.unzipSync = function(buffer, opts) {
  return zlibBufferSync(new Unzip(opts), buffer);
};

exports.inflate = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Inflate(opts), buffer, callback);
};

exports.inflateSync = function(buffer, opts) {
  return zlibBufferSync(new Inflate(opts), buffer);
};

exports.gunzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Gunzip(opts), buffer, callback);
};

exports.gunzipSync = function(buffer, opts) {
  return zlibBufferSync(new Gunzip(opts), buffer);
};

exports.inflateRaw = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new InflateRaw(opts), buffer, callback);
};

exports.inflateRawSync = function(buffer, opts) {
  return zlibBufferSync(new InflateRaw(opts), buffer);
};

function zlibBuffer(engine, buffer, callback) {
  var buffers = [];
  var nread = 0;

  engine.on('error', onError);
  engine.on('end', onEnd);

  engine.end(buffer);
  flow();

  function flow() {
    var chunk;
    while (null !== (chunk = engine.read())) {
      buffers.push(chunk);
      nread += chunk.length;
    }
    engine.once('readable', flow);
  }

  function onError(err) {
    engine.removeListener('end', onEnd);
    engine.removeListener('readable', flow);
    callback(err);
  }

  function onEnd() {
    var buf = Buffer.concat(buffers, nread);
    buffers = [];
    callback(null, buf);
    engine.close();
  }
}

function zlibBufferSync(engine, buffer) {
  if (typeof buffer === 'string')
    buffer = new Buffer(buffer);
  if (!Buffer.isBuffer(buffer))
    throw new TypeError('Not a string or buffer');

  var flushFlag = binding.Z_FINISH;

  return engine._processChunk(buffer, flushFlag);
}

// generic zlib
// minimal 2-byte header
function Deflate(opts) {
  if (!(this instanceof Deflate)) return new Deflate(opts);
  Zlib.call(this, opts, binding.DEFLATE);
}

function Inflate(opts) {
  if (!(this instanceof Inflate)) return new Inflate(opts);
  Zlib.call(this, opts, binding.INFLATE);
}



// gzip - bigger header, same deflate compression
function Gzip(opts) {
  if (!(this instanceof Gzip)) return new Gzip(opts);
  Zlib.call(this, opts, binding.GZIP);
}

function Gunzip(opts) {
  if (!(this instanceof Gunzip)) return new Gunzip(opts);
  Zlib.call(this, opts, binding.GUNZIP);
}



// raw - no header
function DeflateRaw(opts) {
  if (!(this instanceof DeflateRaw)) return new DeflateRaw(opts);
  Zlib.call(this, opts, binding.DEFLATERAW);
}

function InflateRaw(opts) {
  if (!(this instanceof InflateRaw)) return new InflateRaw(opts);
  Zlib.call(this, opts, binding.INFLATERAW);
}


// auto-detect header.
function Unzip(opts) {
  if (!(this instanceof Unzip)) return new Unzip(opts);
  Zlib.call(this, opts, binding.UNZIP);
}


// the Zlib class they all inherit from
// This thing manages the queue of requests, and returns
// true or false if there is anything in the queue when
// you call the .write() method.

function Zlib(opts, mode) {
  this._opts = opts = opts || {};
  this._chunkSize = opts.chunkSize || exports.Z_DEFAULT_CHUNK;

  Transform.call(this, opts);

  if (opts.flush) {
    if (opts.flush !== binding.Z_NO_FLUSH &&
        opts.flush !== binding.Z_PARTIAL_FLUSH &&
        opts.flush !== binding.Z_SYNC_FLUSH &&
        opts.flush !== binding.Z_FULL_FLUSH &&
        opts.flush !== binding.Z_FINISH &&
        opts.flush !== binding.Z_BLOCK) {
      throw new Error('Invalid flush flag: ' + opts.flush);
    }
  }
  this._flushFlag = opts.flush || binding.Z_NO_FLUSH;

  if (opts.chunkSize) {
    if (opts.chunkSize < exports.Z_MIN_CHUNK ||
        opts.chunkSize > exports.Z_MAX_CHUNK) {
      throw new Error('Invalid chunk size: ' + opts.chunkSize);
    }
  }

  if (opts.windowBits) {
    if (opts.windowBits < exports.Z_MIN_WINDOWBITS ||
        opts.windowBits > exports.Z_MAX_WINDOWBITS) {
      throw new Error('Invalid windowBits: ' + opts.windowBits);
    }
  }

  if (opts.level) {
    if (opts.level < exports.Z_MIN_LEVEL ||
        opts.level > exports.Z_MAX_LEVEL) {
      throw new Error('Invalid compression level: ' + opts.level);
    }
  }

  if (opts.memLevel) {
    if (opts.memLevel < exports.Z_MIN_MEMLEVEL ||
        opts.memLevel > exports.Z_MAX_MEMLEVEL) {
      throw new Error('Invalid memLevel: ' + opts.memLevel);
    }
  }

  if (opts.strategy) {
    if (opts.strategy != exports.Z_FILTERED &&
        opts.strategy != exports.Z_HUFFMAN_ONLY &&
        opts.strategy != exports.Z_RLE &&
        opts.strategy != exports.Z_FIXED &&
        opts.strategy != exports.Z_DEFAULT_STRATEGY) {
      throw new Error('Invalid strategy: ' + opts.strategy);
    }
  }

  if (opts.dictionary) {
    if (!Buffer.isBuffer(opts.dictionary)) {
      throw new Error('Invalid dictionary: it should be a Buffer instance');
    }
  }

  this._binding = new binding.Zlib(mode);

  var self = this;
  this._hadError = false;
  this._binding.onerror = function(message, errno) {
    // there is no way to cleanly recover.
    // continuing only obscures problems.
    self._binding = null;
    self._hadError = true;

    var error = new Error(message);
    error.errno = errno;
    error.code = exports.codes[errno];
    self.emit('error', error);
  };

  var level = exports.Z_DEFAULT_COMPRESSION;
  if (typeof opts.level === 'number') level = opts.level;

  var strategy = exports.Z_DEFAULT_STRATEGY;
  if (typeof opts.strategy === 'number') strategy = opts.strategy;

  this._binding.init(opts.windowBits || exports.Z_DEFAULT_WINDOWBITS,
                     level,
                     opts.memLevel || exports.Z_DEFAULT_MEMLEVEL,
                     strategy,
                     opts.dictionary);

  this._buffer = new Buffer(this._chunkSize);
  this._offset = 0;
  this._closed = false;
  this._level = level;
  this._strategy = strategy;

  this.once('end', this.close);
}

util.inherits(Zlib, Transform);

Zlib.prototype.params = function(level, strategy, callback) {
  if (level < exports.Z_MIN_LEVEL ||
      level > exports.Z_MAX_LEVEL) {
    throw new RangeError('Invalid compression level: ' + level);
  }
  if (strategy != exports.Z_FILTERED &&
      strategy != exports.Z_HUFFMAN_ONLY &&
      strategy != exports.Z_RLE &&
      strategy != exports.Z_FIXED &&
      strategy != exports.Z_DEFAULT_STRATEGY) {
    throw new TypeError('Invalid strategy: ' + strategy);
  }

  if (this._level !== level || this._strategy !== strategy) {
    var self = this;
    this.flush(binding.Z_SYNC_FLUSH, function() {
      self._binding.params(level, strategy);
      if (!self._hadError) {
        self._level = level;
        self._strategy = strategy;
        if (callback) callback();
      }
    });
  } else {
    process.nextTick(callback);
  }
};

Zlib.prototype.reset = function() {
  return this._binding.reset();
};

// This is the _flush function called by the transform class,
// internally, when the last chunk has been written.
Zlib.prototype._flush = function(callback) {
  this._transform(new Buffer(0), '', callback);
};

Zlib.prototype.flush = function(kind, callback) {
  var ws = this._writableState;

  if (typeof kind === 'function' || (kind === void 0 && !callback)) {
    callback = kind;
    kind = binding.Z_FULL_FLUSH;
  }

  if (ws.ended) {
    if (callback)
      process.nextTick(callback);
  } else if (ws.ending) {
    if (callback)
      this.once('end', callback);
  } else if (ws.needDrain) {
    var self = this;
    this.once('drain', function() {
      self.flush(callback);
    });
  } else {
    this._flushFlag = kind;
    this.write(new Buffer(0), '', callback);
  }
};

Zlib.prototype.close = function(callback) {
  if (callback)
    process.nextTick(callback);

  if (this._closed)
    return;

  this._closed = true;

  this._binding.close();

  var self = this;
  process.nextTick(function() {
    self.emit('close');
  });
};

Zlib.prototype._transform = function(chunk, encoding, cb) {
  var flushFlag;
  var ws = this._writableState;
  var ending = ws.ending || ws.ended;
  var last = ending && (!chunk || ws.length === chunk.length);

  if (!chunk === null && !Buffer.isBuffer(chunk))
    return cb(new Error('invalid input'));

  // If it's the last chunk, or a final flush, we use the Z_FINISH flush flag.
  // If it's explicitly flushing at some other time, then we use
  // Z_FULL_FLUSH. Otherwise, use Z_NO_FLUSH for maximum compression
  // goodness.
  if (last)
    flushFlag = binding.Z_FINISH;
  else {
    flushFlag = this._flushFlag;
    // once we've flushed the last of the queue, stop flushing and
    // go back to the normal behavior.
    if (chunk.length >= ws.length) {
      this._flushFlag = this._opts.flush || binding.Z_NO_FLUSH;
    }
  }

  var self = this;
  this._processChunk(chunk, flushFlag, cb);
};

Zlib.prototype._processChunk = function(chunk, flushFlag, cb) {
  var availInBefore = chunk && chunk.length;
  var availOutBefore = this._chunkSize - this._offset;
  var inOff = 0;

  var self = this;

  var async = typeof cb === 'function';

  if (!async) {
    var buffers = [];
    var nread = 0;

    var error;
    this.on('error', function(er) {
      error = er;
    });

    do {
      var res = this._binding.writeSync(flushFlag,
                                        chunk, // in
                                        inOff, // in_off
                                        availInBefore, // in_len
                                        this._buffer, // out
                                        this._offset, //out_off
                                        availOutBefore); // out_len
    } while (!this._hadError && callback(res[0], res[1]));

    if (this._hadError) {
      throw error;
    }

    var buf = Buffer.concat(buffers, nread);
    this.close();

    return buf;
  }

  var req = this._binding.write(flushFlag,
                                chunk, // in
                                inOff, // in_off
                                availInBefore, // in_len
                                this._buffer, // out
                                this._offset, //out_off
                                availOutBefore); // out_len

  req.buffer = chunk;
  req.callback = callback;

  function callback(availInAfter, availOutAfter) {
    if (self._hadError)
      return;

    var have = availOutBefore - availOutAfter;
    assert(have >= 0, 'have should not go down');

    if (have > 0) {
      var out = self._buffer.slice(self._offset, self._offset + have);
      self._offset += have;
      // serve some output to the consumer.
      if (async) {
        self.push(out);
      } else {
        buffers.push(out);
        nread += out.length;
      }
    }

    // exhausted the output buffer, or used all the input create a new one.
    if (availOutAfter === 0 || self._offset >= self._chunkSize) {
      availOutBefore = self._chunkSize;
      self._offset = 0;
      self._buffer = new Buffer(self._chunkSize);
    }

    if (availOutAfter === 0) {
      // Not actually done.  Need to reprocess.
      // Also, update the availInBefore to the availInAfter value,
      // so that if we have to hit it a third (fourth, etc.) time,
      // it'll have the correct byte counts.
      inOff += (availInBefore - availInAfter);
      availInBefore = availInAfter;

      if (!async)
        return true;

      var newReq = self._binding.write(flushFlag,
                                       chunk,
                                       inOff,
                                       availInBefore,
                                       self._buffer,
                                       self._offset,
                                       self._chunkSize);
      newReq.callback = callback; // this same function
      newReq.buffer = chunk;
      return;
    }

    if (!async)
      return false;

    // finished with the chunk.
    cb();
  }
};

util.inherits(Deflate, Zlib);
util.inherits(Inflate, Zlib);
util.inherits(Gzip, Zlib);
util.inherits(Gunzip, Zlib);
util.inherits(DeflateRaw, Zlib);
util.inherits(InflateRaw, Zlib);
util.inherits(Unzip, Zlib);

}).call(this)}).call(this,require('_process'),require("buffer").Buffer)
},{"./binding":30,"_process":152,"_stream_transform":44,"assert":17,"buffer":47,"util":217}],32:[function(require,module,exports){
arguments[4][29][0].apply(exports,arguments)
},{"dup":29}],33:[function(require,module,exports){
(function (global){(function (){
/*! https://mths.be/punycode v1.4.1 by @mathias */
;(function(root) {

	/** Detect free variables */
	var freeExports = typeof exports == 'object' && exports &&
		!exports.nodeType && exports;
	var freeModule = typeof module == 'object' && module &&
		!module.nodeType && module;
	var freeGlobal = typeof global == 'object' && global;
	if (
		freeGlobal.global === freeGlobal ||
		freeGlobal.window === freeGlobal ||
		freeGlobal.self === freeGlobal
	) {
		root = freeGlobal;
	}

	/**
	 * The `punycode` object.
	 * @name punycode
	 * @type Object
	 */
	var punycode,

	/** Highest positive signed 32-bit float value */
	maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1

	/** Bootstring parameters */
	base = 36,
	tMin = 1,
	tMax = 26,
	skew = 38,
	damp = 700,
	initialBias = 72,
	initialN = 128, // 0x80
	delimiter = '-', // '\x2D'

	/** Regular expressions */
	regexPunycode = /^xn--/,
	regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
	regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators

	/** Error messages */
	errors = {
		'overflow': 'Overflow: input needs wider integers to process',
		'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
		'invalid-input': 'Invalid input'
	},

	/** Convenience shortcuts */
	baseMinusTMin = base - tMin,
	floor = Math.floor,
	stringFromCharCode = String.fromCharCode,

	/** Temporary variable */
	key;

	/*--------------------------------------------------------------------------*/

	/**
	 * A generic error utility function.
	 * @private
	 * @param {String} type The error type.
	 * @returns {Error} Throws a `RangeError` with the applicable error message.
	 */
	function error(type) {
		throw new RangeError(errors[type]);
	}

	/**
	 * A generic `Array#map` utility function.
	 * @private
	 * @param {Array} array The array to iterate over.
	 * @param {Function} callback The function that gets called for every array
	 * item.
	 * @returns {Array} A new array of values returned by the callback function.
	 */
	function map(array, fn) {
		var length = array.length;
		var result = [];
		while (length--) {
			result[length] = fn(array[length]);
		}
		return result;
	}

	/**
	 * A simple `Array#map`-like wrapper to work with domain name strings or email
	 * addresses.
	 * @private
	 * @param {String} domain The domain name or email address.
	 * @param {Function} callback The function that gets called for every
	 * character.
	 * @returns {Array} A new string of characters returned by the callback
	 * function.
	 */
	function mapDomain(string, fn) {
		var parts = string.split('@');
		var result = '';
		if (parts.length > 1) {
			// In email addresses, only the domain name should be punycoded. Leave
			// the local part (i.e. everything up to `@`) intact.
			result = parts[0] + '@';
			string = parts[1];
		}
		// Avoid `split(regex)` for IE8 compatibility. See #17.
		string = string.replace(regexSeparators, '\x2E');
		var labels = string.split('.');
		var encoded = map(labels, fn).join('.');
		return result + encoded;
	}

	/**
	 * Creates an array containing the numeric code points of each Unicode
	 * character in the string. While JavaScript uses UCS-2 internally,
	 * this function will convert a pair of surrogate halves (each of which
	 * UCS-2 exposes as separate characters) into a single code point,
	 * matching UTF-16.
	 * @see `punycode.ucs2.encode`
	 * @see <https://mathiasbynens.be/notes/javascript-encoding>
	 * @memberOf punycode.ucs2
	 * @name decode
	 * @param {String} string The Unicode input string (UCS-2).
	 * @returns {Array} The new array of code points.
	 */
	function ucs2decode(string) {
		var output = [],
		    counter = 0,
		    length = string.length,
		    value,
		    extra;
		while (counter < length) {
			value = string.charCodeAt(counter++);
			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
				// high surrogate, and there is a next character
				extra = string.charCodeAt(counter++);
				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
				} else {
					// unmatched surrogate; only append this code unit, in case the next
					// code unit is the high surrogate of a surrogate pair
					output.push(value);
					counter--;
				}
			} else {
				output.push(value);
			}
		}
		return output;
	}

	/**
	 * Creates a string based on an array of numeric code points.
	 * @see `punycode.ucs2.decode`
	 * @memberOf punycode.ucs2
	 * @name encode
	 * @param {Array} codePoints The array of numeric code points.
	 * @returns {String} The new Unicode string (UCS-2).
	 */
	function ucs2encode(array) {
		return map(array, function(value) {
			var output = '';
			if (value > 0xFFFF) {
				value -= 0x10000;
				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
				value = 0xDC00 | value & 0x3FF;
			}
			output += stringFromCharCode(value);
			return output;
		}).join('');
	}

	/**
	 * Converts a basic code point into a digit/integer.
	 * @see `digitToBasic()`
	 * @private
	 * @param {Number} codePoint The basic numeric code point value.
	 * @returns {Number} The numeric value of a basic code point (for use in
	 * representing integers) in the range `0` to `base - 1`, or `base` if
	 * the code point does not represent a value.
	 */
	function basicToDigit(codePoint) {
		if (codePoint - 48 < 10) {
			return codePoint - 22;
		}
		if (codePoint - 65 < 26) {
			return codePoint - 65;
		}
		if (codePoint - 97 < 26) {
			return codePoint - 97;
		}
		return base;
	}

	/**
	 * Converts a digit/integer into a basic code point.
	 * @see `basicToDigit()`
	 * @private
	 * @param {Number} digit The numeric value of a basic code point.
	 * @returns {Number} The basic code point whose value (when used for
	 * representing integers) is `digit`, which needs to be in the range
	 * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
	 * used; else, the lowercase form is used. The behavior is undefined
	 * if `flag` is non-zero and `digit` has no uppercase form.
	 */
	function digitToBasic(digit, flag) {
		//  0..25 map to ASCII a..z or A..Z
		// 26..35 map to ASCII 0..9
		return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
	}

	/**
	 * Bias adaptation function as per section 3.4 of RFC 3492.
	 * https://tools.ietf.org/html/rfc3492#section-3.4
	 * @private
	 */
	function adapt(delta, numPoints, firstTime) {
		var k = 0;
		delta = firstTime ? floor(delta / damp) : delta >> 1;
		delta += floor(delta / numPoints);
		for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
			delta = floor(delta / baseMinusTMin);
		}
		return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
	}

	/**
	 * Converts a Punycode string of ASCII-only symbols to a string of Unicode
	 * symbols.
	 * @memberOf punycode
	 * @param {String} input The Punycode string of ASCII-only symbols.
	 * @returns {String} The resulting string of Unicode symbols.
	 */
	function decode(input) {
		// Don't use UCS-2
		var output = [],
		    inputLength = input.length,
		    out,
		    i = 0,
		    n = initialN,
		    bias = initialBias,
		    basic,
		    j,
		    index,
		    oldi,
		    w,
		    k,
		    digit,
		    t,
		    /** Cached calculation results */
		    baseMinusT;

		// Handle the basic code points: let `basic` be the number of input code
		// points before the last delimiter, or `0` if there is none, then copy
		// the first basic code points to the output.

		basic = input.lastIndexOf(delimiter);
		if (basic < 0) {
			basic = 0;
		}

		for (j = 0; j < basic; ++j) {
			// if it's not a basic code point
			if (input.charCodeAt(j) >= 0x80) {
				error('not-basic');
			}
			output.push(input.charCodeAt(j));
		}

		// Main decoding loop: start just after the last delimiter if any basic code
		// points were copied; start at the beginning otherwise.

		for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {

			// `index` is the index of the next character to be consumed.
			// Decode a generalized variable-length integer into `delta`,
			// which gets added to `i`. The overflow checking is easier
			// if we increase `i` as we go, then subtract off its starting
			// value at the end to obtain `delta`.
			for (oldi = i, w = 1, k = base; /* no condition */; k += base) {

				if (index >= inputLength) {
					error('invalid-input');
				}

				digit = basicToDigit(input.charCodeAt(index++));

				if (digit >= base || digit > floor((maxInt - i) / w)) {
					error('overflow');
				}

				i += digit * w;
				t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);

				if (digit < t) {
					break;
				}

				baseMinusT = base - t;
				if (w > floor(maxInt / baseMinusT)) {
					error('overflow');
				}

				w *= baseMinusT;

			}

			out = output.length + 1;
			bias = adapt(i - oldi, out, oldi == 0);

			// `i` was supposed to wrap around from `out` to `0`,
			// incrementing `n` each time, so we'll fix that now:
			if (floor(i / out) > maxInt - n) {
				error('overflow');
			}

			n += floor(i / out);
			i %= out;

			// Insert `n` at position `i` of the output
			output.splice(i++, 0, n);

		}

		return ucs2encode(output);
	}

	/**
	 * Converts a string of Unicode symbols (e.g. a domain name label) to a
	 * Punycode string of ASCII-only symbols.
	 * @memberOf punycode
	 * @param {String} input The string of Unicode symbols.
	 * @returns {String} The resulting Punycode string of ASCII-only symbols.
	 */
	function encode(input) {
		var n,
		    delta,
		    handledCPCount,
		    basicLength,
		    bias,
		    j,
		    m,
		    q,
		    k,
		    t,
		    currentValue,
		    output = [],
		    /** `inputLength` will hold the number of code points in `input`. */
		    inputLength,
		    /** Cached calculation results */
		    handledCPCountPlusOne,
		    baseMinusT,
		    qMinusT;

		// Convert the input in UCS-2 to Unicode
		input = ucs2decode(input);

		// Cache the length
		inputLength = input.length;

		// Initialize the state
		n = initialN;
		delta = 0;
		bias = initialBias;

		// Handle the basic code points
		for (j = 0; j < inputLength; ++j) {
			currentValue = input[j];
			if (currentValue < 0x80) {
				output.push(stringFromCharCode(currentValue));
			}
		}

		handledCPCount = basicLength = output.length;

		// `handledCPCount` is the number of code points that have been handled;
		// `basicLength` is the number of basic code points.

		// Finish the basic string - if it is not empty - with a delimiter
		if (basicLength) {
			output.push(delimiter);
		}

		// Main encoding loop:
		while (handledCPCount < inputLength) {

			// All non-basic code points < n have been handled already. Find the next
			// larger one:
			for (m = maxInt, j = 0; j < inputLength; ++j) {
				currentValue = input[j];
				if (currentValue >= n && currentValue < m) {
					m = currentValue;
				}
			}

			// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
			// but guard against overflow
			handledCPCountPlusOne = handledCPCount + 1;
			if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
				error('overflow');
			}

			delta += (m - n) * handledCPCountPlusOne;
			n = m;

			for (j = 0; j < inputLength; ++j) {
				currentValue = input[j];

				if (currentValue < n && ++delta > maxInt) {
					error('overflow');
				}

				if (currentValue == n) {
					// Represent delta as a generalized variable-length integer
					for (q = delta, k = base; /* no condition */; k += base) {
						t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
						if (q < t) {
							break;
						}
						qMinusT = q - t;
						baseMinusT = base - t;
						output.push(
							stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
						);
						q = floor(qMinusT / baseMinusT);
					}

					output.push(stringFromCharCode(digitToBasic(q, 0)));
					bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
					delta = 0;
					++handledCPCount;
				}
			}

			++delta;
			++n;

		}
		return output.join('');
	}

	/**
	 * Converts a Punycode string representing a domain name or an email address
	 * to Unicode. Only the Punycoded parts of the input will be converted, i.e.
	 * it doesn't matter if you call it on a string that has already been
	 * converted to Unicode.
	 * @memberOf punycode
	 * @param {String} input The Punycoded domain name or email address to
	 * convert to Unicode.
	 * @returns {String} The Unicode representation of the given Punycode
	 * string.
	 */
	function toUnicode(input) {
		return mapDomain(input, function(string) {
			return regexPunycode.test(string)
				? decode(string.slice(4).toLowerCase())
				: string;
		});
	}

	/**
	 * Converts a Unicode string representing a domain name or an email address to
	 * Punycode. Only the non-ASCII parts of the domain name will be converted,
	 * i.e. it doesn't matter if you call it with a domain that's already in
	 * ASCII.
	 * @memberOf punycode
	 * @param {String} input The domain name or email address to convert, as a
	 * Unicode string.
	 * @returns {String} The Punycode representation of the given domain name or
	 * email address.
	 */
	function toASCII(input) {
		return mapDomain(input, function(string) {
			return regexNonASCII.test(string)
				? 'xn--' + encode(string)
				: string;
		});
	}

	/*--------------------------------------------------------------------------*/

	/** Define the public API */
	punycode = {
		/**
		 * A string representing the current Punycode.js version number.
		 * @memberOf punycode
		 * @type String
		 */
		'version': '1.4.1',
		/**
		 * An object of methods to convert from JavaScript's internal character
		 * representation (UCS-2) to Unicode code points, and back.
		 * @see <https://mathiasbynens.be/notes/javascript-encoding>
		 * @memberOf punycode
		 * @type Object
		 */
		'ucs2': {
			'decode': ucs2decode,
			'encode': ucs2encode
		},
		'decode': decode,
		'encode': encode,
		'toASCII': toASCII,
		'toUnicode': toUnicode
	};

	/** Expose `punycode` */
	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof define == 'function' &&
		typeof define.amd == 'object' &&
		define.amd
	) {
		define('punycode', function() {
			return punycode;
		});
	} else if (freeExports && freeModule) {
		if (module.exports == freeExports) {
			// in Node.js, io.js, or RingoJS v0.8.0+
			freeModule.exports = punycode;
		} else {
			// in Narwhal or RingoJS v0.7.0-
			for (key in punycode) {
				punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
			}
		}
	} else {
		// in Rhino or a web browser
		root.punycode = punycode;
	}

}(this));

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],34:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    keys.push(key);
  }return keys;
};
/*</replacement>*/

module.exports = Duplex;

/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

{
  // avoid scope creep, the keys array can then be collected
  var keys = objectKeys(Writable.prototype);
  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false) this.readable = false;

  if (options && options.writable === false) this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

  this.once('end', onend);
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended) return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  pna.nextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }
    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});

Duplex.prototype._destroy = function (err, cb) {
  this.push(null);
  this.end();

  pna.nextTick(cb, err);
};
},{"./_stream_readable":36,"./_stream_writable":38,"core-util-is":49,"inherits":85,"process-nextick-args":151}],35:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":37,"core-util-is":49,"inherits":85}],36:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = require('events').EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;

util.inherits(Readable, Stream);

var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);

  // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.
  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var readableHwm = options.readableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;

  // has it been destroyed
  this.destroyed = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  if (!(this instanceof Readable)) return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined) {
      return false;
    }
    return this._readableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
  }
});

Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
  this.push(null);
  cb(err);
};

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }
      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  var state = stream._readableState;
  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        stream.emit('error', new Error('stream.push() after EOF'));
      } else {
        state.reading = false;
        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
    }
  }

  return needMoreData(state);
}

function addChunk(stream, state, chunk, addToFront) {
  if (state.flowing && state.length === 0 && !state.sync) {
    stream.emit('data', chunk);
    stream.read(0);
  } else {
    // update the buffer info.
    state.length += state.objectMode ? 1 : chunk.length;
    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);

    if (state.needReadable) emitReadable(stream);
  }
  maybeReadMore(stream, state);
}

function chunkInvalid(state, chunk) {
  var er;
  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}

// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
};

// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true;

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}

// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    pna.nextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;else len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
  this.emit('error', new Error('_read() is not implemented'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;

  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');
    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = { hasUnpiped: false };

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0) return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;

    if (!dest) dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, unpipeInfo);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this, unpipeInfo);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        pna.nextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    pna.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;

  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });

  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function (method) {
        return function () {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  }

  // proxy certain important events.
  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  }

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  this._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._readableState.highWaterMark;
  }
});

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
  var ret = Buffer.allocUnsafe(n);
  var p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    pna.nextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":34,"./internal/streams/BufferList":39,"./internal/streams/destroy":40,"./internal/streams/stream":41,"_process":152,"core-util-is":49,"events":80,"inherits":85,"isarray":88,"process-nextick-args":151,"safe-buffer":45,"string_decoder/":42,"util":29}],37:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

'use strict';

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) {
    return this.emit('error', new Error('write callback called multiple times'));
  }

  ts.writechunk = null;
  ts.writecb = null;

  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);

  cb(er);

  var rs = this._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  };

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;

    if (typeof options.flush === 'function') this._flush = options.flush;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function') {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
  throw new Error('_transform() is not implemented');
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  var _this2 = this;

  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
    _this2.emit('close');
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');

  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}
},{"./_stream_duplex":34,"core-util-is":49,"inherits":85}],38:[function(require,module,exports){
(function (process,global,setImmediate){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Writable;

/* <replacement> */
function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;
  this.finish = function () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;

/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

var destroyImpl = require('./internal/streams/destroy');

util.inherits(Writable, Stream);

function nop() {}

function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var writableHwm = options.writableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // if _final has been called
  this.finalCalled = false;

  // drain event flag.
  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // has it been destroyed
  this.destroyed = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function (er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;

  // count buffered requests
  this.bufferedRequestCount = 0;

  // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two
  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
    return new Writable(options);
  }

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;

    if (typeof options.writev === 'function') this._writev = options.writev;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;

    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
  this.emit('error', new Error('Cannot pipe, not readable'));
};

function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  pna.nextTick(cb, er);
}

// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;

  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    pna.nextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;
  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function () {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }
  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);
    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    pna.nextTick(cb, er);
    // this can emit finish, and it will always happen
    // after error
    pna.nextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
    // this can emit finish, but finish must
    // always follow error
    finishMaybe(stream, state);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      /*<replacement>*/
      asyncWrite(afterWrite, stream, state, finished, cb);
      /*</replacement>*/
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}

// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;

    var count = 0;
    var allBuffers = true;
    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }
    buffer.allBuffers = allBuffers;

    doWrite(stream, state, true, state.length, buffer, '', holder.finish);

    // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite
    state.pendingcb++;
    state.lastBufferedRequest = null;
    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }
    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished) endWritable(this, state, cb);
};

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;
    if (err) {
      stream.emit('error', err);
    }
    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}
function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function') {
      state.pendingcb++;
      state.finalCalled = true;
      pna.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    prefinish(stream, state);
    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;
  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  }
  if (state.corkedRequestsFree) {
    state.corkedRequestsFree.next = corkReq;
  } else {
    state.corkedRequestsFree = corkReq;
  }
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  get: function () {
    if (this._writableState === undefined) {
      return false;
    }
    return this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._writableState.destroyed = value;
  }
});

Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
  this.end();
  cb(err);
};
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"./_stream_duplex":34,"./internal/streams/destroy":40,"./internal/streams/stream":41,"_process":152,"core-util-is":49,"inherits":85,"process-nextick-args":151,"safe-buffer":45,"timers":210,"util-deprecate":214}],39:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Buffer = require('safe-buffer').Buffer;
var util = require('util');

function copyBuffer(src, target, offset) {
  src.copy(target, offset);
}

module.exports = function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  BufferList.prototype.push = function push(v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };

  BufferList.prototype.unshift = function unshift(v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };

  BufferList.prototype.shift = function shift() {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };

  BufferList.prototype.clear = function clear() {
    this.head = this.tail = null;
    this.length = 0;
  };

  BufferList.prototype.join = function join(s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };

  BufferList.prototype.concat = function concat(n) {
    if (this.length === 0) return Buffer.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = Buffer.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      copyBuffer(p.data, ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };

  return BufferList;
}();

if (util && util.inspect && util.inspect.custom) {
  module.exports.prototype[util.inspect.custom] = function () {
    var obj = util.inspect({ length: this.length });
    return this.constructor.name + ' ' + obj;
  };
}
},{"safe-buffer":45,"util":29}],40:[function(require,module,exports){
'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
      pna.nextTick(emitErrorNT, this, err);
    }
    return this;
  }

  // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks

  if (this._readableState) {
    this._readableState.destroyed = true;
  }

  // if this is a duplex stream mark the writable part as destroyed as well
  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      pna.nextTick(emitErrorNT, _this, err);
      if (_this._writableState) {
        _this._writableState.errorEmitted = true;
      }
    } else if (cb) {
      cb(err);
    }
  });

  return this;
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy
};
},{"process-nextick-args":151}],41:[function(require,module,exports){
module.exports = require('events').EventEmitter;

},{"events":80}],42:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + encoding;
  switch (encoding && encoding.toLowerCase()) {
    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
      return true;
    default:
      return false;
  }
};

function _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return byte >> 6 === 0x02 ? -1 : -2;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd';
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd';
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd';
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd';
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":45}],43:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":34,"./lib/_stream_passthrough.js":35,"./lib/_stream_readable.js":36,"./lib/_stream_transform.js":37,"./lib/_stream_writable.js":38}],44:[function(require,module,exports){
module.exports = require('./readable').Transform

},{"./readable":43}],45:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":47}],46:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Buffer = require('buffer').Buffer;

var isBufferEncoding = Buffer.isEncoding
  || function(encoding) {
       switch (encoding && encoding.toLowerCase()) {
         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
         default: return false;
       }
     }


function assertEncoding(encoding) {
  if (encoding && !isBufferEncoding(encoding)) {
    throw new Error('Unknown encoding: ' + encoding);
  }
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
var StringDecoder = exports.StringDecoder = function(encoding) {
  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
  assertEncoding(encoding);
  switch (this.encoding) {
    case 'utf8':
      // CESU-8 represents each of Surrogate Pair by 3-bytes
      this.surrogateSize = 3;
      break;
    case 'ucs2':
    case 'utf16le':
      // UTF-16 represents each of Surrogate Pair by 2-bytes
      this.surrogateSize = 2;
      this.detectIncompleteChar = utf16DetectIncompleteChar;
      break;
    case 'base64':
      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
      this.surrogateSize = 3;
      this.detectIncompleteChar = base64DetectIncompleteChar;
      break;
    default:
      this.write = passThroughWrite;
      return;
  }

  // Enough space to store all bytes of a single character. UTF-8 needs 4
  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
  this.charBuffer = new Buffer(6);
  // Number of bytes received for the current incomplete multi-byte character.
  this.charReceived = 0;
  // Number of bytes expected for the current incomplete multi-byte character.
  this.charLength = 0;
};


// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder.prototype.write = function(buffer) {
  var charStr = '';
  // if our last write ended with an incomplete multibyte character
  while (this.charLength) {
    // determine how many remaining bytes this buffer has to offer for this char
    var available = (buffer.length >= this.charLength - this.charReceived) ?
        this.charLength - this.charReceived :
        buffer.length;

    // add the new bytes to the char buffer
    buffer.copy(this.charBuffer, this.charReceived, 0, available);
    this.charReceived += available;

    if (this.charReceived < this.charLength) {
      // still not enough chars in this buffer? wait for more ...
      return '';
    }

    // remove bytes belonging to the current character from the buffer
    buffer = buffer.slice(available, buffer.length);

    // get the character that was split
    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    var charCode = charStr.charCodeAt(charStr.length - 1);
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      this.charLength += this.surrogateSize;
      charStr = '';
      continue;
    }
    this.charReceived = this.charLength = 0;

    // if there are no more bytes in this buffer, just emit our char
    if (buffer.length === 0) {
      return charStr;
    }
    break;
  }

  // determine and set charLength / charReceived
  this.detectIncompleteChar(buffer);

  var end = buffer.length;
  if (this.charLength) {
    // buffer the incomplete character bytes we got
    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
    end -= this.charReceived;
  }

  charStr += buffer.toString(this.encoding, 0, end);

  var end = charStr.length - 1;
  var charCode = charStr.charCodeAt(end);
  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
    var size = this.surrogateSize;
    this.charLength += size;
    this.charReceived += size;
    this.charBuffer.copy(this.charBuffer, size, 0, size);
    buffer.copy(this.charBuffer, 0, 0, size);
    return charStr.substring(0, end);
  }

  // or just emit the charStr
  return charStr;
};

// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
  // determine how many bytes we have to check at the end of this buffer
  var i = (buffer.length >= 3) ? 3 : buffer.length;

  // Figure out if one of the last i bytes of our buffer announces an
  // incomplete char.
  for (; i > 0; i--) {
    var c = buffer[buffer.length - i];

    // See http://en.wikipedia.org/wiki/UTF-8#Description

    // 110XXXXX
    if (i == 1 && c >> 5 == 0x06) {
      this.charLength = 2;
      break;
    }

    // 1110XXXX
    if (i <= 2 && c >> 4 == 0x0E) {
      this.charLength = 3;
      break;
    }

    // 11110XXX
    if (i <= 3 && c >> 3 == 0x1E) {
      this.charLength = 4;
      break;
    }
  }
  this.charReceived = i;
};

StringDecoder.prototype.end = function(buffer) {
  var res = '';
  if (buffer && buffer.length)
    res = this.write(buffer);

  if (this.charReceived) {
    var cr = this.charReceived;
    var buf = this.charBuffer;
    var enc = this.encoding;
    res += buf.slice(0, cr).toString(enc);
  }

  return res;
};

function passThroughWrite(buffer) {
  return buffer.toString(this.encoding);
}

function utf16DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 2;
  this.charLength = this.charReceived ? 2 : 0;
}

function base64DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 3;
  this.charLength = this.charReceived ? 3 : 0;
}

},{"buffer":47}],47:[function(require,module,exports){
(function (global,Buffer){(function (){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <http://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var isArray = require('isarray')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Due to various browser bugs, sometimes the Object implementation will be used even
 * when the browser supports typed arrays.
 *
 * Note:
 *
 *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
 *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *     incorrect length in some situations.

 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
 * get the Object implementation, which is slower but behaves correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
  ? global.TYPED_ARRAY_SUPPORT
  : typedArraySupport()

/*
 * Export kMaxLength after typed array support is determined.
 */
exports.kMaxLength = kMaxLength()

function typedArraySupport () {
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
    return arr.foo() === 42 && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
}

function kMaxLength () {
  return Buffer.TYPED_ARRAY_SUPPORT
    ? 0x7fffffff
    : 0x3fffffff
}

function createBuffer (that, length) {
  if (kMaxLength() < length) {
    throw new RangeError('Invalid typed array length')
  }
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = new Uint8Array(length)
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    if (that === null) {
      that = new Buffer(length)
    }
    that.length = length
  }

  return that
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
    return new Buffer(arg, encodingOrOffset, length)
  }

  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new Error(
        'If encoding is specified then the first argument must be a string'
      )
    }
    return allocUnsafe(this, arg)
  }
  return from(this, arg, encodingOrOffset, length)
}

Buffer.poolSize = 8192 // not used by this implementation

// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
  arr.__proto__ = Buffer.prototype
  return arr
}

function from (that, value, encodingOrOffset, length) {
  if (typeof value === 'number') {
    throw new TypeError('"value" argument must not be a number')
  }

  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
    return fromArrayBuffer(that, value, encodingOrOffset, length)
  }

  if (typeof value === 'string') {
    return fromString(that, value, encodingOrOffset)
  }

  return fromObject(that, value)
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(null, value, encodingOrOffset, length)
}

if (Buffer.TYPED_ARRAY_SUPPORT) {
  Buffer.prototype.__proto__ = Uint8Array.prototype
  Buffer.__proto__ = Uint8Array
  if (typeof Symbol !== 'undefined' && Symbol.species &&
      Buffer[Symbol.species] === Buffer) {
    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
    Object.defineProperty(Buffer, Symbol.species, {
      value: null,
      configurable: true
    })
  }
}

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be a number')
  } else if (size < 0) {
    throw new RangeError('"size" argument must not be negative')
  }
}

function alloc (that, size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(that, size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(that, size).fill(fill, encoding)
      : createBuffer(that, size).fill(fill)
  }
  return createBuffer(that, size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(null, size, fill, encoding)
}

function allocUnsafe (that, size) {
  assertSize(size)
  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < size; ++i) {
      that[i] = 0
    }
  }
  return that
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(null, size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(null, size)
}

function fromString (that, string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('"encoding" must be a valid string encoding')
  }

  var length = byteLength(string, encoding) | 0
  that = createBuffer(that, length)

  var actual = that.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    that = that.slice(0, actual)
  }

  return that
}

function fromArrayLike (that, array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  that = createBuffer(that, length)
  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

function fromArrayBuffer (that, array, byteOffset, length) {
  array.byteLength // this throws if `array` is not a valid ArrayBuffer

  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('\'offset\' is out of bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('\'length\' is out of bounds')
  }

  if (byteOffset === undefined && length === undefined) {
    array = new Uint8Array(array)
  } else if (length === undefined) {
    array = new Uint8Array(array, byteOffset)
  } else {
    array = new Uint8Array(array, byteOffset, length)
  }

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = array
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    that = fromArrayLike(that, array)
  }
  return that
}

function fromObject (that, obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    that = createBuffer(that, len)

    if (that.length === 0) {
      return that
    }

    obj.copy(that, 0, 0, len)
    return that
  }

  if (obj) {
    if ((typeof ArrayBuffer !== 'undefined' &&
        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
      if (typeof obj.length !== 'number' || isnan(obj.length)) {
        return createBuffer(that, 0)
      }
      return fromArrayLike(that, obj)
    }

    if (obj.type === 'Buffer' && isArray(obj.data)) {
      return fromArrayLike(that, obj.data)
    }
  }

  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}

function checked (length) {
  // Note: cannot use `length < kMaxLength()` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= kMaxLength()) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function compare (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError('Arguments must be Buffers')
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    string = '' + string
  }

  var len = string.length
  if (len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
      case undefined:
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) return utf8ToBytes(string).length // assume utf8
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length | 0
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max) str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (!Buffer.isBuffer(target)) {
    throw new TypeError('Argument must be a Buffer')
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset  // Coerce to Number.
  if (isNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (Buffer.TYPED_ARRAY_SUPPORT &&
        typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset | 0
    if (isFinite(length)) {
      length = length | 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  // legacy write(string, encoding, offset, length) - remove in v0.13
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
      : (firstByte > 0xBF) ? 2
      : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    newBuf = this.subarray(start, end)
    newBuf.__proto__ = Buffer.prototype
  } else {
    var sliceLen = end - start
    newBuf = new Buffer(sliceLen, undefined)
    for (var i = 0; i < sliceLen; ++i) {
      newBuf[i] = this[i + start]
    }
  }

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = (value & 0xff)
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start
  var i

  if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    // ascending copy from start
    for (i = 0; i < len; ++i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, start + len),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if (code < 256) {
        val = code
      }
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : utf8ToBytes(new Buffer(val, encoding).toString())
    var len = bytes.length
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

function isnan (val) {
  return val !== val // eslint-disable-line no-self-compare
}

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"base64-js":27,"buffer":47,"ieee754":84,"isarray":88}],48:[function(require,module,exports){
module.exports = {
  "100": "Continue",
  "101": "Switching Protocols",
  "102": "Processing",
  "200": "OK",
  "201": "Created",
  "202": "Accepted",
  "203": "Non-Authoritative Information",
  "204": "No Content",
  "205": "Reset Content",
  "206": "Partial Content",
  "207": "Multi-Status",
  "208": "Already Reported",
  "226": "IM Used",
  "300": "Multiple Choices",
  "301": "Moved Permanently",
  "302": "Found",
  "303": "See Other",
  "304": "Not Modified",
  "305": "Use Proxy",
  "307": "Temporary Redirect",
  "308": "Permanent Redirect",
  "400": "Bad Request",
  "401": "Unauthorized",
  "402": "Payment Required",
  "403": "Forbidden",
  "404": "Not Found",
  "405": "Method Not Allowed",
  "406": "Not Acceptable",
  "407": "Proxy Authentication Required",
  "408": "Request Timeout",
  "409": "Conflict",
  "410": "Gone",
  "411": "Length Required",
  "412": "Precondition Failed",
  "413": "Payload Too Large",
  "414": "URI Too Long",
  "415": "Unsupported Media Type",
  "416": "Range Not Satisfiable",
  "417": "Expectation Failed",
  "418": "I'm a teapot",
  "421": "Misdirected Request",
  "422": "Unprocessable Entity",
  "423": "Locked",
  "424": "Failed Dependency",
  "425": "Unordered Collection",
  "426": "Upgrade Required",
  "428": "Precondition Required",
  "429": "Too Many Requests",
  "431": "Request Header Fields Too Large",
  "451": "Unavailable For Legal Reasons",
  "500": "Internal Server Error",
  "501": "Not Implemented",
  "502": "Bad Gateway",
  "503": "Service Unavailable",
  "504": "Gateway Timeout",
  "505": "HTTP Version Not Supported",
  "506": "Variant Also Negotiates",
  "507": "Insufficient Storage",
  "508": "Loop Detected",
  "509": "Bandwidth Limit Exceeded",
  "510": "Not Extended",
  "511": "Network Authentication Required"
}

},{}],49:[function(require,module,exports){
(function (Buffer){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

}).call(this)}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":86}],50:[function(require,module,exports){
(function(e,r){"object"==typeof exports?module.exports=exports=r():"function"==typeof define&&define.amd?define([],r):e.CryptoJS=r()})(this,function(){var e=e||function(e,r){var t={},i=t.lib={},n=i.Base=function(){function e(){}return{extend:function(r){e.prototype=this;var t=new e;return r&&t.mixIn(r),t.hasOwnProperty("init")||(t.init=function(){t.$super.init.apply(this,arguments)}),t.init.prototype=t,t.$super=this,t},create:function(){var e=this.extend();return e.init.apply(e,arguments),e},init:function(){},mixIn:function(e){for(var r in e)e.hasOwnProperty(r)&&(this[r]=e[r]);e.hasOwnProperty("toString")&&(this.toString=e.toString)},clone:function(){return this.init.prototype.extend(this)}}}(),o=i.WordArray=n.extend({init:function(e,t){e=this.words=e||[],this.sigBytes=t!=r?t:4*e.length},toString:function(e){return(e||s).stringify(this)},concat:function(e){var r=this.words,t=e.words,i=this.sigBytes,n=e.sigBytes;if(this.clamp(),i%4)for(var o=0;n>o;o++){var c=255&t[o>>>2]>>>24-8*(o%4);r[i+o>>>2]|=c<<24-8*((i+o)%4)}else if(t.length>65535)for(var o=0;n>o;o+=4)r[i+o>>>2]=t[o>>>2];else r.push.apply(r,t);return this.sigBytes+=n,this},clamp:function(){var r=this.words,t=this.sigBytes;r[t>>>2]&=4294967295<<32-8*(t%4),r.length=e.ceil(t/4)},clone:function(){var e=n.clone.call(this);return e.words=this.words.slice(0),e},random:function(r){for(var t=[],i=0;r>i;i+=4)t.push(0|4294967296*e.random());return new o.init(t,r)}}),c=t.enc={},s=c.Hex={stringify:function(e){for(var r=e.words,t=e.sigBytes,i=[],n=0;t>n;n++){var o=255&r[n>>>2]>>>24-8*(n%4);i.push((o>>>4).toString(16)),i.push((15&o).toString(16))}return i.join("")},parse:function(e){for(var r=e.length,t=[],i=0;r>i;i+=2)t[i>>>3]|=parseInt(e.substr(i,2),16)<<24-4*(i%8);return new o.init(t,r/2)}},u=c.Latin1={stringify:function(e){for(var r=e.words,t=e.sigBytes,i=[],n=0;t>n;n++){var o=255&r[n>>>2]>>>24-8*(n%4);i.push(String.fromCharCode(o))}return i.join("")},parse:function(e){for(var r=e.length,t=[],i=0;r>i;i++)t[i>>>2]|=(255&e.charCodeAt(i))<<24-8*(i%4);return new o.init(t,r)}},f=c.Utf8={stringify:function(e){try{return decodeURIComponent(escape(u.stringify(e)))}catch(r){throw Error("Malformed UTF-8 data")}},parse:function(e){return u.parse(unescape(encodeURIComponent(e)))}},a=i.BufferedBlockAlgorithm=n.extend({reset:function(){this._data=new o.init,this._nDataBytes=0},_append:function(e){"string"==typeof e&&(e=f.parse(e)),this._data.concat(e),this._nDataBytes+=e.sigBytes},_process:function(r){var t=this._data,i=t.words,n=t.sigBytes,c=this.blockSize,s=4*c,u=n/s;u=r?e.ceil(u):e.max((0|u)-this._minBufferSize,0);var f=u*c,a=e.min(4*f,n);if(f){for(var p=0;f>p;p+=c)this._doProcessBlock(i,p);var d=i.splice(0,f);t.sigBytes-=a}return new o.init(d,a)},clone:function(){var e=n.clone.call(this);return e._data=this._data.clone(),e},_minBufferSize:0});i.Hasher=a.extend({cfg:n.extend(),init:function(e){this.cfg=this.cfg.extend(e),this.reset()},reset:function(){a.reset.call(this),this._doReset()},update:function(e){return this._append(e),this._process(),this},finalize:function(e){e&&this._append(e);var r=this._doFinalize();return r},blockSize:16,_createHelper:function(e){return function(r,t){return new e.init(t).finalize(r)}},_createHmacHelper:function(e){return function(r,t){return new p.HMAC.init(e,t).finalize(r)}}});var p=t.algo={};return t}(Math);return e});
},{}],51:[function(require,module,exports){
(function(e,r){"object"==typeof exports?module.exports=exports=r(require("./core"),require("./sha1"),require("./hmac")):"function"==typeof define&&define.amd?define(["./core","./sha1","./hmac"],r):r(e.CryptoJS)})(this,function(e){return e.HmacSHA1});
},{"./core":50,"./hmac":53,"./sha1":54}],52:[function(require,module,exports){
(function(e,r){"object"==typeof exports?module.exports=exports=r(require("./core"),require("./sha256"),require("./hmac")):"function"==typeof define&&define.amd?define(["./core","./sha256","./hmac"],r):r(e.CryptoJS)})(this,function(e){return e.HmacSHA256});
},{"./core":50,"./hmac":53,"./sha256":55}],53:[function(require,module,exports){
(function(e,r){"object"==typeof exports?module.exports=exports=r(require("./core")):"function"==typeof define&&define.amd?define(["./core"],r):r(e.CryptoJS)})(this,function(e){(function(){var r=e,t=r.lib,n=t.Base,i=r.enc,o=i.Utf8,s=r.algo;s.HMAC=n.extend({init:function(e,r){e=this._hasher=new e.init,"string"==typeof r&&(r=o.parse(r));var t=e.blockSize,n=4*t;r.sigBytes>n&&(r=e.finalize(r)),r.clamp();for(var i=this._oKey=r.clone(),s=this._iKey=r.clone(),a=i.words,c=s.words,f=0;t>f;f++)a[f]^=1549556828,c[f]^=909522486;i.sigBytes=s.sigBytes=n,this.reset()},reset:function(){var e=this._hasher;e.reset(),e.update(this._iKey)},update:function(e){return this._hasher.update(e),this},finalize:function(e){var r=this._hasher,t=r.finalize(e);r.reset();var n=r.finalize(this._oKey.clone().concat(t));return n}})})()});
},{"./core":50}],54:[function(require,module,exports){
(function(e,r){"object"==typeof exports?module.exports=exports=r(require("./core")):"function"==typeof define&&define.amd?define(["./core"],r):r(e.CryptoJS)})(this,function(e){return function(){var r=e,t=r.lib,n=t.WordArray,i=t.Hasher,o=r.algo,s=[],c=o.SHA1=i.extend({_doReset:function(){this._hash=new n.init([1732584193,4023233417,2562383102,271733878,3285377520])},_doProcessBlock:function(e,r){for(var t=this._hash.words,n=t[0],i=t[1],o=t[2],c=t[3],a=t[4],f=0;80>f;f++){if(16>f)s[f]=0|e[r+f];else{var u=s[f-3]^s[f-8]^s[f-14]^s[f-16];s[f]=u<<1|u>>>31}var d=(n<<5|n>>>27)+a+s[f];d+=20>f?(i&o|~i&c)+1518500249:40>f?(i^o^c)+1859775393:60>f?(i&o|i&c|o&c)-1894007588:(i^o^c)-899497514,a=c,c=o,o=i<<30|i>>>2,i=n,n=d}t[0]=0|t[0]+n,t[1]=0|t[1]+i,t[2]=0|t[2]+o,t[3]=0|t[3]+c,t[4]=0|t[4]+a},_doFinalize:function(){var e=this._data,r=e.words,t=8*this._nDataBytes,n=8*e.sigBytes;return r[n>>>5]|=128<<24-n%32,r[(n+64>>>9<<4)+14]=Math.floor(t/4294967296),r[(n+64>>>9<<4)+15]=t,e.sigBytes=4*r.length,this._process(),this._hash},clone:function(){var e=i.clone.call(this);return e._hash=this._hash.clone(),e}});r.SHA1=i._createHelper(c),r.HmacSHA1=i._createHmacHelper(c)}(),e.SHA1});
},{"./core":50}],55:[function(require,module,exports){
(function(e,r){"object"==typeof exports?module.exports=exports=r(require("./core")):"function"==typeof define&&define.amd?define(["./core"],r):r(e.CryptoJS)})(this,function(e){return function(r){var t=e,n=t.lib,i=n.WordArray,o=n.Hasher,s=t.algo,c=[],a=[];(function(){function e(e){for(var t=r.sqrt(e),n=2;t>=n;n++)if(!(e%n))return!1;return!0}function t(e){return 0|4294967296*(e-(0|e))}for(var n=2,i=0;64>i;)e(n)&&(8>i&&(c[i]=t(r.pow(n,.5))),a[i]=t(r.pow(n,1/3)),i++),n++})();var f=[],u=s.SHA256=o.extend({_doReset:function(){this._hash=new i.init(c.slice(0))},_doProcessBlock:function(e,r){for(var t=this._hash.words,n=t[0],i=t[1],o=t[2],s=t[3],c=t[4],u=t[5],d=t[6],p=t[7],h=0;64>h;h++){if(16>h)f[h]=0|e[r+h];else{var y=f[h-15],l=(y<<25|y>>>7)^(y<<14|y>>>18)^y>>>3,m=f[h-2],x=(m<<15|m>>>17)^(m<<13|m>>>19)^m>>>10;f[h]=l+f[h-7]+x+f[h-16]}var v=c&u^~c&d,q=n&i^n&o^i&o,g=(n<<30|n>>>2)^(n<<19|n>>>13)^(n<<10|n>>>22),_=(c<<26|c>>>6)^(c<<21|c>>>11)^(c<<7|c>>>25),b=p+_+v+a[h]+f[h],S=g+q;p=d,d=u,u=c,c=0|s+b,s=o,o=i,i=n,n=0|b+S}t[0]=0|t[0]+n,t[1]=0|t[1]+i,t[2]=0|t[2]+o,t[3]=0|t[3]+s,t[4]=0|t[4]+c,t[5]=0|t[5]+u,t[6]=0|t[6]+d,t[7]=0|t[7]+p},_doFinalize:function(){var e=this._data,t=e.words,n=8*this._nDataBytes,i=8*e.sigBytes;return t[i>>>5]|=128<<24-i%32,t[(i+64>>>9<<4)+14]=r.floor(n/4294967296),t[(i+64>>>9<<4)+15]=n,e.sigBytes=4*t.length,this._process(),this._hash},clone:function(){var e=o.clone.call(this);return e._hash=this._hash.clone(),e}});t.SHA256=o._createHelper(u),t.HmacSHA256=o._createHmacHelper(u)}(Math),e.SHA256});
},{"./core":50}],56:[function(require,module,exports){
(function (process){(function (){
/**
 * This is the web browser implementation of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = require('./debug');
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = 'undefined' != typeof chrome
               && 'undefined' != typeof chrome.storage
                  ? chrome.storage.local
                  : localstorage();

/**
 * Colors.
 */

exports.colors = [
  'lightseagreen',
  'forestgreen',
  'goldenrod',
  'dodgerblue',
  'darkorchid',
  'crimson'
];

/**
 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
 * and the Firebug extension (any Firefox version) are known
 * to support "%c" CSS customizations.
 *
 * TODO: add a `localStorage` variable to explicitly enable/disable colors
 */

function useColors() {
  // NB: In an Electron preload script, document will be defined but not fully
  // initialized. Since we know we're in Chrome, we'll just detect this case
  // explicitly
  if (typeof window !== 'undefined' && window.process && window.process.type === 'renderer') {
    return true;
  }

  // is webkit? http://stackoverflow.com/a/16459606/376773
  // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
  return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||
    // is firebug? http://stackoverflow.com/a/398120/376773
    (typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||
    // is firefox >= v31?
    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
    (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||
    // double check webkit in userAgent just in case we are in a worker
    (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/));
}

/**
 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
 */

exports.formatters.j = function(v) {
  try {
    return JSON.stringify(v);
  } catch (err) {
    return '[UnexpectedJSONParseError]: ' + err.message;
  }
};


/**
 * Colorize log arguments if enabled.
 *
 * @api public
 */

function formatArgs(args) {
  var useColors = this.useColors;

  args[0] = (useColors ? '%c' : '')
    + this.namespace
    + (useColors ? ' %c' : ' ')
    + args[0]
    + (useColors ? '%c ' : ' ')
    + '+' + exports.humanize(this.diff);

  if (!useColors) return;

  var c = 'color: ' + this.color;
  args.splice(1, 0, c, 'color: inherit')

  // the final "%c" is somewhat tricky, because there could be other
  // arguments passed either before or after the %c, so we need to
  // figure out the correct index to insert the CSS into
  var index = 0;
  var lastC = 0;
  args[0].replace(/%[a-zA-Z%]/g, function(match) {
    if ('%%' === match) return;
    index++;
    if ('%c' === match) {
      // we only are interested in the *last* %c
      // (the user may have provided their own)
      lastC = index;
    }
  });

  args.splice(lastC, 0, c);
}

/**
 * Invokes `console.log()` when available.
 * No-op when `console.log` is not a "function".
 *
 * @api public
 */

function log() {
  // this hackery is required for IE8/9, where
  // the `console.log` function doesn't have 'apply'
  return 'object' === typeof console
    && console.log
    && Function.prototype.apply.call(console.log, console, arguments);
}

/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */

function save(namespaces) {
  try {
    if (null == namespaces) {
      exports.storage.removeItem('debug');
    } else {
      exports.storage.debug = namespaces;
    }
  } catch(e) {}
}

/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */

function load() {
  var r;
  try {
    r = exports.storage.debug;
  } catch(e) {}

  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG
  if (!r && typeof process !== 'undefined' && 'env' in process) {
    r = process.env.DEBUG;
  }

  return r;
}

/**
 * Enable namespaces listed in `localStorage.debug` initially.
 */

exports.enable(load());

/**
 * Localstorage attempts to return the localstorage.
 *
 * This is necessary because safari throws
 * when a user disables cookies/localstorage
 * and you attempt to access it.
 *
 * @return {LocalStorage}
 * @api private
 */

function localstorage() {
  try {
    return window.localStorage;
  } catch (e) {}
}

}).call(this)}).call(this,require('_process'))
},{"./debug":57,"_process":152}],57:[function(require,module,exports){

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = createDebug.debug = createDebug['default'] = createDebug;
exports.coerce = coerce;
exports.disable = disable;
exports.enable = enable;
exports.enabled = enabled;
exports.humanize = require('ms');

/**
 * The currently active debug mode names, and names to skip.
 */

exports.names = [];
exports.skips = [];

/**
 * Map of special "%n" handling functions, for the debug "format" argument.
 *
 * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
 */

exports.formatters = {};

/**
 * Previous log timestamp.
 */

var prevTime;

/**
 * Select a color.
 * @param {String} namespace
 * @return {Number}
 * @api private
 */

function selectColor(namespace) {
  var hash = 0, i;

  for (i in namespace) {
    hash  = ((hash << 5) - hash) + namespace.charCodeAt(i);
    hash |= 0; // Convert to 32bit integer
  }

  return exports.colors[Math.abs(hash) % exports.colors.length];
}

/**
 * Create a debugger with the given `namespace`.
 *
 * @param {String} namespace
 * @return {Function}
 * @api public
 */

function createDebug(namespace) {

  function debug() {
    // disabled?
    if (!debug.enabled) return;

    var self = debug;

    // set `diff` timestamp
    var curr = +new Date();
    var ms = curr - (prevTime || curr);
    self.diff = ms;
    self.prev = prevTime;
    self.curr = curr;
    prevTime = curr;

    // turn the `arguments` into a proper Array
    var args = new Array(arguments.length);
    for (var i = 0; i < args.length; i++) {
      args[i] = arguments[i];
    }

    args[0] = exports.coerce(args[0]);

    if ('string' !== typeof args[0]) {
      // anything else let's inspect with %O
      args.unshift('%O');
    }

    // apply any `formatters` transformations
    var index = 0;
    args[0] = args[0].replace(/%([a-zA-Z%])/g, function(match, format) {
      // if we encounter an escaped % then don't increase the array index
      if (match === '%%') return match;
      index++;
      var formatter = exports.formatters[format];
      if ('function' === typeof formatter) {
        var val = args[index];
        match = formatter.call(self, val);

        // now we need to remove `args[index]` since it's inlined in the `format`
        args.splice(index, 1);
        index--;
      }
      return match;
    });

    // apply env-specific formatting (colors, etc.)
    exports.formatArgs.call(self, args);

    var logFn = debug.log || exports.log || console.log.bind(console);
    logFn.apply(self, args);
  }

  debug.namespace = namespace;
  debug.enabled = exports.enabled(namespace);
  debug.useColors = exports.useColors();
  debug.color = selectColor(namespace);

  // env-specific initialization logic for debug instances
  if ('function' === typeof exports.init) {
    exports.init(debug);
  }

  return debug;
}

/**
 * Enables a debug mode by namespaces. This can include modes
 * separated by a colon and wildcards.
 *
 * @param {String} namespaces
 * @api public
 */

function enable(namespaces) {
  exports.save(namespaces);

  exports.names = [];
  exports.skips = [];

  var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
  var len = split.length;

  for (var i = 0; i < len; i++) {
    if (!split[i]) continue; // ignore empty strings
    namespaces = split[i].replace(/\*/g, '.*?');
    if (namespaces[0] === '-') {
      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
    } else {
      exports.names.push(new RegExp('^' + namespaces + '$'));
    }
  }
}

/**
 * Disable debug output.
 *
 * @api public
 */

function disable() {
  exports.enable('');
}

/**
 * Returns true if the given mode name is enabled, false otherwise.
 *
 * @param {String} name
 * @return {Boolean}
 * @api public
 */

function enabled(name) {
  var i, len;
  for (i = 0, len = exports.skips.length; i < len; i++) {
    if (exports.skips[i].test(name)) {
      return false;
    }
  }
  for (i = 0, len = exports.names.length; i < len; i++) {
    if (exports.names[i].test(name)) {
      return true;
    }
  }
  return false;
}

/**
 * Coerce `val`.
 *
 * @param {Mixed} val
 * @return {Mixed}
 * @api private
 */

function coerce(val) {
  if (val instanceof Error) return val.stack || val.message;
  return val;
}

},{"ms":104}],58:[function(require,module,exports){
(function (Buffer){(function (){
'use strict';

var iconvLite = require('iconv-lite');

// Expose to the world
module.exports.convert = convert;

/**
 * Convert encoding of an UTF-8 string or a buffer
 *
 * @param {String|Buffer} str String to be converted
 * @param {String} to Encoding to be converted to
 * @param {String} [from='UTF-8'] Encoding to be converted from
 * @return {Buffer} Encoded string
 */
function convert(str, to, from) {
    from = checkEncoding(from || 'UTF-8');
    to = checkEncoding(to || 'UTF-8');
    str = str || '';

    var result;

    if (from !== 'UTF-8' && typeof str === 'string') {
        str = Buffer.from(str, 'binary');
    }

    if (from === to) {
        if (typeof str === 'string') {
            result = Buffer.from(str);
        } else {
            result = str;
        }
    } else {
        try {
            result = convertIconvLite(str, to, from);
        } catch (E) {
            console.error(E);
            result = str;
        }
    }

    if (typeof result === 'string') {
        result = Buffer.from(result, 'utf-8');
    }

    return result;
}

/**
 * Convert encoding of astring with iconv-lite
 *
 * @param {String|Buffer} str String to be converted
 * @param {String} to Encoding to be converted to
 * @param {String} [from='UTF-8'] Encoding to be converted from
 * @return {Buffer} Encoded string
 */
function convertIconvLite(str, to, from) {
    if (to === 'UTF-8') {
        return iconvLite.decode(str, from);
    } else if (from === 'UTF-8') {
        return iconvLite.encode(str, to);
    } else {
        return iconvLite.encode(iconvLite.decode(str, from), to);
    }
}

/**
 * Converts charset name if needed
 *
 * @param {String} name Character set
 * @return {String} Character set name
 */
function checkEncoding(name) {
    return (name || '')
        .toString()
        .trim()
        .replace(/^latin[\-_]?(\d+)$/i, 'ISO-8859-$1')
        .replace(/^win(?:dows)?[\-_]?(\d+)$/i, 'WINDOWS-$1')
        .replace(/^utf[\-_]?(\d+)$/i, 'UTF-$1')
        .replace(/^ks_c_5601\-1987$/i, 'CP949')
        .replace(/^us[\-_]?ascii$/i, 'ASCII')
        .toUpperCase();
}

}).call(this)}).call(this,require("buffer").Buffer)
},{"buffer":47,"iconv-lite":78}],59:[function(require,module,exports){
"use strict";
var Buffer = require("safer-buffer").Buffer;

// Multibyte codec. In this scheme, a character is represented by 1 or more bytes.
// Our codec supports UTF-16 surrogates, extensions for GB18030 and unicode sequences.
// To save memory and loading time, we read table files only when requested.

exports._dbcs = DBCSCodec;

var UNASSIGNED = -1,
    GB18030_CODE = -2,
    SEQ_START  = -10,
    NODE_START = -1000,
    UNASSIGNED_NODE = new Array(0x100),
    DEF_CHAR = -1;

for (var i = 0; i < 0x100; i++)
    UNASSIGNED_NODE[i] = UNASSIGNED;


// Class DBCSCodec reads and initializes mapping tables.
function DBCSCodec(codecOptions, iconv) {
    this.encodingName = codecOptions.encodingName;
    if (!codecOptions)
        throw new Error("DBCS codec is called without the data.")
    if (!codecOptions.table)
        throw new Error("Encoding '" + this.encodingName + "' has no data.");

    // Load tables.
    var mappingTable = codecOptions.table();


    // Decode tables: MBCS -> Unicode.

    // decodeTables is a trie, encoded as an array of arrays of integers. Internal arrays are trie nodes and all have len = 256.
    // Trie root is decodeTables[0].
    // Values: >=  0 -> unicode character code. can be > 0xFFFF
    //         == UNASSIGNED -> unknown/unassigned sequence.
    //         == GB18030_CODE -> this is the end of a GB18030 4-byte sequence.
    //         <= NODE_START -> index of the next node in our trie to process next byte.
    //         <= SEQ_START  -> index of the start of a character code sequence, in decodeTableSeq.
    this.decodeTables = [];
    this.decodeTables[0] = UNASSIGNED_NODE.slice(0); // Create root node.

    // Sometimes a MBCS char corresponds to a sequence of unicode chars. We store them as arrays of integers here. 
    this.decodeTableSeq = [];

    // Actual mapping tables consist of chunks. Use them to fill up decode tables.
    for (var i = 0; i < mappingTable.length; i++)
        this._addDecodeChunk(mappingTable[i]);

    // Load & create GB18030 tables when needed.
    if (typeof codecOptions.gb18030 === 'function') {
        this.gb18030 = codecOptions.gb18030(); // Load GB18030 ranges.

        // Add GB18030 common decode nodes.
        var commonThirdByteNodeIdx = this.decodeTables.length;
        this.decodeTables.push(UNASSIGNED_NODE.slice(0));

        var commonFourthByteNodeIdx = this.decodeTables.length;
        this.decodeTables.push(UNASSIGNED_NODE.slice(0));

        // Fill out the tree
        var firstByteNode = this.decodeTables[0];
        for (var i = 0x81; i <= 0xFE; i++) {
            var secondByteNode = this.decodeTables[NODE_START - firstByteNode[i]];
            for (var j = 0x30; j <= 0x39; j++) {
                if (secondByteNode[j] === UNASSIGNED) {
                    secondByteNode[j] = NODE_START - commonThirdByteNodeIdx;
                } else if (secondByteNode[j] > NODE_START) {
                    throw new Error("gb18030 decode tables conflict at byte 2");
                }

                var thirdByteNode = this.decodeTables[NODE_START - secondByteNode[j]];
                for (var k = 0x81; k <= 0xFE; k++) {
                    if (thirdByteNode[k] === UNASSIGNED) {
                        thirdByteNode[k] = NODE_START - commonFourthByteNodeIdx;
                    } else if (thirdByteNode[k] === NODE_START - commonFourthByteNodeIdx) {
                        continue;
                    } else if (thirdByteNode[k] > NODE_START) {
                        throw new Error("gb18030 decode tables conflict at byte 3");
                    }

                    var fourthByteNode = this.decodeTables[NODE_START - thirdByteNode[k]];
                    for (var l = 0x30; l <= 0x39; l++) {
                        if (fourthByteNode[l] === UNASSIGNED)
                            fourthByteNode[l] = GB18030_CODE;
                    }
                }
            }
        }
    }

    this.defaultCharUnicode = iconv.defaultCharUnicode;

    
    // Encode tables: Unicode -> DBCS.

    // `encodeTable` is array mapping from unicode char to encoded char. All its values are integers for performance.
    // Because it can be sparse, it is represented as array of buckets by 256 chars each. Bucket can be null.
    // Values: >=  0 -> it is a normal char. Write the value (if <=256 then 1 byte, if <=65536 then 2 bytes, etc.).
    //         == UNASSIGNED -> no conversion found. Output a default char.
    //         <= SEQ_START  -> it's an index in encodeTableSeq, see below. The character starts a sequence.
    this.encodeTable = [];
    
    // `encodeTableSeq` is used when a sequence of unicode characters is encoded as a single code. We use a tree of
    // objects where keys correspond to characters in sequence and leafs are the encoded dbcs values. A special DEF_CHAR key
    // means end of sequence (needed when one sequence is a strict subsequence of another).
    // Objects are kept separately from encodeTable to increase performance.
    this.encodeTableSeq = [];

    // Some chars can be decoded, but need not be encoded.
    var skipEncodeChars = {};
    if (codecOptions.encodeSkipVals)
        for (var i = 0; i < codecOptions.encodeSkipVals.length; i++) {
            var val = codecOptions.encodeSkipVals[i];
            if (typeof val === 'number')
                skipEncodeChars[val] = true;
            else
                for (var j = val.from; j <= val.to; j++)
                    skipEncodeChars[j] = true;
        }
        
    // Use decode trie to recursively fill out encode tables.
    this._fillEncodeTable(0, 0, skipEncodeChars);

    // Add more encoding pairs when needed.
    if (codecOptions.encodeAdd) {
        for (var uChar in codecOptions.encodeAdd)
            if (Object.prototype.hasOwnProperty.call(codecOptions.encodeAdd, uChar))
                this._setEncodeChar(uChar.charCodeAt(0), codecOptions.encodeAdd[uChar]);
    }

    this.defCharSB  = this.encodeTable[0][iconv.defaultCharSingleByte.charCodeAt(0)];
    if (this.defCharSB === UNASSIGNED) this.defCharSB = this.encodeTable[0]['?'];
    if (this.defCharSB === UNASSIGNED) this.defCharSB = "?".charCodeAt(0);
}

DBCSCodec.prototype.encoder = DBCSEncoder;
DBCSCodec.prototype.decoder = DBCSDecoder;

// Decoder helpers
DBCSCodec.prototype._getDecodeTrieNode = function(addr) {
    var bytes = [];
    for (; addr > 0; addr >>>= 8)
        bytes.push(addr & 0xFF);
    if (bytes.length == 0)
        bytes.push(0);

    var node = this.decodeTables[0];
    for (var i = bytes.length-1; i > 0; i--) { // Traverse nodes deeper into the trie.
        var val = node[bytes[i]];

        if (val == UNASSIGNED) { // Create new node.
            node[bytes[i]] = NODE_START - this.decodeTables.length;
            this.decodeTables.push(node = UNASSIGNED_NODE.slice(0));
        }
        else if (val <= NODE_START) { // Existing node.
            node = this.decodeTables[NODE_START - val];
        }
        else
            throw new Error("Overwrite byte in " + this.encodingName + ", addr: " + addr.toString(16));
    }
    return node;
}


DBCSCodec.prototype._addDecodeChunk = function(chunk) {
    // First element of chunk is the hex mbcs code where we start.
    var curAddr = parseInt(chunk[0], 16);

    // Choose the decoding node where we'll write our chars.
    var writeTable = this._getDecodeTrieNode(curAddr);
    curAddr = curAddr & 0xFF;

    // Write all other elements of the chunk to the table.
    for (var k = 1; k < chunk.length; k++) {
        var part = chunk[k];
        if (typeof part === "string") { // String, write as-is.
            for (var l = 0; l < part.length;) {
                var code = part.charCodeAt(l++);
                if (0xD800 <= code && code < 0xDC00) { // Decode surrogate
                    var codeTrail = part.charCodeAt(l++);
                    if (0xDC00 <= codeTrail && codeTrail < 0xE000)
                        writeTable[curAddr++] = 0x10000 + (code - 0xD800) * 0x400 + (codeTrail - 0xDC00);
                    else
                        throw new Error("Incorrect surrogate pair in "  + this.encodingName + " at chunk " + chunk[0]);
                }
                else if (0x0FF0 < code && code <= 0x0FFF) { // Character sequence (our own encoding used)
                    var len = 0xFFF - code + 2;
                    var seq = [];
                    for (var m = 0; m < len; m++)
                        seq.push(part.charCodeAt(l++)); // Simple variation: don't support surrogates or subsequences in seq.

                    writeTable[curAddr++] = SEQ_START - this.decodeTableSeq.length;
                    this.decodeTableSeq.push(seq);
                }
                else
                    writeTable[curAddr++] = code; // Basic char
            }
        } 
        else if (typeof part === "number") { // Integer, meaning increasing sequence starting with prev character.
            var charCode = writeTable[curAddr - 1] + 1;
            for (var l = 0; l < part; l++)
                writeTable[curAddr++] = charCode++;
        }
        else
            throw new Error("Incorrect type '" + typeof part + "' given in "  + this.encodingName + " at chunk " + chunk[0]);
    }
    if (curAddr > 0xFF)
        throw new Error("Incorrect chunk in "  + this.encodingName + " at addr " + chunk[0] + ": too long" + curAddr);
}

// Encoder helpers
DBCSCodec.prototype._getEncodeBucket = function(uCode) {
    var high = uCode >> 8; // This could be > 0xFF because of astral characters.
    if (this.encodeTable[high] === undefined)
        this.encodeTable[high] = UNASSIGNED_NODE.slice(0); // Create bucket on demand.
    return this.encodeTable[high];
}

DBCSCodec.prototype._setEncodeChar = function(uCode, dbcsCode) {
    var bucket = this._getEncodeBucket(uCode);
    var low = uCode & 0xFF;
    if (bucket[low] <= SEQ_START)
        this.encodeTableSeq[SEQ_START-bucket[low]][DEF_CHAR] = dbcsCode; // There's already a sequence, set a single-char subsequence of it.
    else if (bucket[low] == UNASSIGNED)
        bucket[low] = dbcsCode;
}

DBCSCodec.prototype._setEncodeSequence = function(seq, dbcsCode) {
    
    // Get the root of character tree according to first character of the sequence.
    var uCode = seq[0];
    var bucket = this._getEncodeBucket(uCode);
    var low = uCode & 0xFF;

    var node;
    if (bucket[low] <= SEQ_START) {
        // There's already a sequence with  - use it.
        node = this.encodeTableSeq[SEQ_START-bucket[low]];
    }
    else {
        // There was no sequence object - allocate a new one.
        node = {};
        if (bucket[low] !== UNASSIGNED) node[DEF_CHAR] = bucket[low]; // If a char was set before - make it a single-char subsequence.
        bucket[low] = SEQ_START - this.encodeTableSeq.length;
        this.encodeTableSeq.push(node);
    }

    // Traverse the character tree, allocating new nodes as needed.
    for (var j = 1; j < seq.length-1; j++) {
        var oldVal = node[uCode];
        if (typeof oldVal === 'object')
            node = oldVal;
        else {
            node = node[uCode] = {}
            if (oldVal !== undefined)
                node[DEF_CHAR] = oldVal
        }
    }

    // Set the leaf to given dbcsCode.
    uCode = seq[seq.length-1];
    node[uCode] = dbcsCode;
}

DBCSCodec.prototype._fillEncodeTable = function(nodeIdx, prefix, skipEncodeChars) {
    var node = this.decodeTables[nodeIdx];
    var hasValues = false;
    var subNodeEmpty = {};
    for (var i = 0; i < 0x100; i++) {
        var uCode = node[i];
        var mbCode = prefix + i;
        if (skipEncodeChars[mbCode])
            continue;

        if (uCode >= 0) {
            this._setEncodeChar(uCode, mbCode);
            hasValues = true;
        } else if (uCode <= NODE_START) {
            var subNodeIdx = NODE_START - uCode;
            if (!subNodeEmpty[subNodeIdx]) {  // Skip empty subtrees (they are too large in gb18030).
                var newPrefix = (mbCode << 8) >>> 0;  // NOTE: '>>> 0' keeps 32-bit num positive.
                if (this._fillEncodeTable(subNodeIdx, newPrefix, skipEncodeChars))
                    hasValues = true;
                else
                    subNodeEmpty[subNodeIdx] = true;
            }
        } else if (uCode <= SEQ_START) {
            this._setEncodeSequence(this.decodeTableSeq[SEQ_START - uCode], mbCode);
            hasValues = true;
        }
    }
    return hasValues;
}



// == Encoder ==================================================================

function DBCSEncoder(options, codec) {
    // Encoder state
    this.leadSurrogate = -1;
    this.seqObj = undefined;
    
    // Static data
    this.encodeTable = codec.encodeTable;
    this.encodeTableSeq = codec.encodeTableSeq;
    this.defaultCharSingleByte = codec.defCharSB;
    this.gb18030 = codec.gb18030;
}

DBCSEncoder.prototype.write = function(str) {
    var newBuf = Buffer.alloc(str.length * (this.gb18030 ? 4 : 3)),
        leadSurrogate = this.leadSurrogate,
        seqObj = this.seqObj, nextChar = -1,
        i = 0, j = 0;

    while (true) {
        // 0. Get next character.
        if (nextChar === -1) {
            if (i == str.length) break;
            var uCode = str.charCodeAt(i++);
        }
        else {
            var uCode = nextChar;
            nextChar = -1;    
        }

        // 1. Handle surrogates.
        if (0xD800 <= uCode && uCode < 0xE000) { // Char is one of surrogates.
            if (uCode < 0xDC00) { // We've got lead surrogate.
                if (leadSurrogate === -1) {
                    leadSurrogate = uCode;
                    continue;
                } else {
                    leadSurrogate = uCode;
                    // Double lead surrogate found.
                    uCode = UNASSIGNED;
                }
            } else { // We've got trail surrogate.
                if (leadSurrogate !== -1) {
                    uCode = 0x10000 + (leadSurrogate - 0xD800) * 0x400 + (uCode - 0xDC00);
                    leadSurrogate = -1;
                } else {
                    // Incomplete surrogate pair - only trail surrogate found.
                    uCode = UNASSIGNED;
                }
                
            }
        }
        else if (leadSurrogate !== -1) {
            // Incomplete surrogate pair - only lead surrogate found.
            nextChar = uCode; uCode = UNASSIGNED; // Write an error, then current char.
            leadSurrogate = -1;
        }

        // 2. Convert uCode character.
        var dbcsCode = UNASSIGNED;
        if (seqObj !== undefined && uCode != UNASSIGNED) { // We are in the middle of the sequence
            var resCode = seqObj[uCode];
            if (typeof resCode === 'object') { // Sequence continues.
                seqObj = resCode;
                continue;

            } else if (typeof resCode == 'number') { // Sequence finished. Write it.
                dbcsCode = resCode;

            } else if (resCode == undefined) { // Current character is not part of the sequence.

                // Try default character for this sequence
                resCode = seqObj[DEF_CHAR];
                if (resCode !== undefined) {
                    dbcsCode = resCode; // Found. Write it.
                    nextChar = uCode; // Current character will be written too in the next iteration.

                } else {
                    // TODO: What if we have no default? (resCode == undefined)
                    // Then, we should write first char of the sequence as-is and try the rest recursively.
                    // Didn't do it for now because no encoding has this situation yet.
                    // Currently, just skip the sequence and write current char.
                }
            }
            seqObj = undefined;
        }
        else if (uCode >= 0) {  // Regular character
            var subtable = this.encodeTable[uCode >> 8];
            if (subtable !== undefined)
                dbcsCode = subtable[uCode & 0xFF];
            
            if (dbcsCode <= SEQ_START) { // Sequence start
                seqObj = this.encodeTableSeq[SEQ_START-dbcsCode];
                continue;
            }

            if (dbcsCode == UNASSIGNED && this.gb18030) {
                // Use GB18030 algorithm to find character(s) to write.
                var idx = findIdx(this.gb18030.uChars, uCode);
                if (idx != -1) {
                    var dbcsCode = this.gb18030.gbChars[idx] + (uCode - this.gb18030.uChars[idx]);
                    newBuf[j++] = 0x81 + Math.floor(dbcsCode / 12600); dbcsCode = dbcsCode % 12600;
                    newBuf[j++] = 0x30 + Math.floor(dbcsCode / 1260); dbcsCode = dbcsCode % 1260;
                    newBuf[j++] = 0x81 + Math.floor(dbcsCode / 10); dbcsCode = dbcsCode % 10;
                    newBuf[j++] = 0x30 + dbcsCode;
                    continue;
                }
            }
        }

        // 3. Write dbcsCode character.
        if (dbcsCode === UNASSIGNED)
            dbcsCode = this.defaultCharSingleByte;
        
        if (dbcsCode < 0x100) {
            newBuf[j++] = dbcsCode;
        }
        else if (dbcsCode < 0x10000) {
            newBuf[j++] = dbcsCode >> 8;   // high byte
            newBuf[j++] = dbcsCode & 0xFF; // low byte
        }
        else if (dbcsCode < 0x1000000) {
            newBuf[j++] = dbcsCode >> 16;
            newBuf[j++] = (dbcsCode >> 8) & 0xFF;
            newBuf[j++] = dbcsCode & 0xFF;
        } else {
            newBuf[j++] = dbcsCode >>> 24;
            newBuf[j++] = (dbcsCode >>> 16) & 0xFF;
            newBuf[j++] = (dbcsCode >>> 8) & 0xFF;
            newBuf[j++] = dbcsCode & 0xFF;
        }
    }

    this.seqObj = seqObj;
    this.leadSurrogate = leadSurrogate;
    return newBuf.slice(0, j);
}

DBCSEncoder.prototype.end = function() {
    if (this.leadSurrogate === -1 && this.seqObj === undefined)
        return; // All clean. Most often case.

    var newBuf = Buffer.alloc(10), j = 0;

    if (this.seqObj) { // We're in the sequence.
        var dbcsCode = this.seqObj[DEF_CHAR];
        if (dbcsCode !== undefined) { // Write beginning of the sequence.
            if (dbcsCode < 0x100) {
                newBuf[j++] = dbcsCode;
            }
            else {
                newBuf[j++] = dbcsCode >> 8;   // high byte
                newBuf[j++] = dbcsCode & 0xFF; // low byte
            }
        } else {
            // See todo above.
        }
        this.seqObj = undefined;
    }

    if (this.leadSurrogate !== -1) {
        // Incomplete surrogate pair - only lead surrogate found.
        newBuf[j++] = this.defaultCharSingleByte;
        this.leadSurrogate = -1;
    }
    
    return newBuf.slice(0, j);
}

// Export for testing
DBCSEncoder.prototype.findIdx = findIdx;


// == Decoder ==================================================================

function DBCSDecoder(options, codec) {
    // Decoder state
    this.nodeIdx = 0;
    this.prevBytes = [];

    // Static data
    this.decodeTables = codec.decodeTables;
    this.decodeTableSeq = codec.decodeTableSeq;
    this.defaultCharUnicode = codec.defaultCharUnicode;
    this.gb18030 = codec.gb18030;
}

DBCSDecoder.prototype.write = function(buf) {
    var newBuf = Buffer.alloc(buf.length*2),
        nodeIdx = this.nodeIdx, 
        prevBytes = this.prevBytes, prevOffset = this.prevBytes.length,
        seqStart = -this.prevBytes.length, // idx of the start of current parsed sequence.
        uCode;

    for (var i = 0, j = 0; i < buf.length; i++) {
        var curByte = (i >= 0) ? buf[i] : prevBytes[i + prevOffset];

        // Lookup in current trie node.
        var uCode = this.decodeTables[nodeIdx][curByte];

        if (uCode >= 0) { 
            // Normal character, just use it.
        }
        else if (uCode === UNASSIGNED) { // Unknown char.
            // TODO: Callback with seq.
            uCode = this.defaultCharUnicode.charCodeAt(0);
            i = seqStart; // Skip one byte ('i' will be incremented by the for loop) and try to parse again.
        }
        else if (uCode === GB18030_CODE) {
            if (i >= 3) {
                var ptr = (buf[i-3]-0x81)*12600 + (buf[i-2]-0x30)*1260 + (buf[i-1]-0x81)*10 + (curByte-0x30);
            } else {
                var ptr = (prevBytes[i-3+prevOffset]-0x81)*12600 + 
                          (((i-2 >= 0) ? buf[i-2] : prevBytes[i-2+prevOffset])-0x30)*1260 + 
                          (((i-1 >= 0) ? buf[i-1] : prevBytes[i-1+prevOffset])-0x81)*10 + 
                          (curByte-0x30);
            }
            var idx = findIdx(this.gb18030.gbChars, ptr);
            uCode = this.gb18030.uChars[idx] + ptr - this.gb18030.gbChars[idx];
        }
        else if (uCode <= NODE_START) { // Go to next trie node.
            nodeIdx = NODE_START - uCode;
            continue;
        }
        else if (uCode <= SEQ_START) { // Output a sequence of chars.
            var seq = this.decodeTableSeq[SEQ_START - uCode];
            for (var k = 0; k < seq.length - 1; k++) {
                uCode = seq[k];
                newBuf[j++] = uCode & 0xFF;
                newBuf[j++] = uCode >> 8;
            }
            uCode = seq[seq.length-1];
        }
        else
            throw new Error("iconv-lite internal error: invalid decoding table value " + uCode + " at " + nodeIdx + "/" + curByte);

        // Write the character to buffer, handling higher planes using surrogate pair.
        if (uCode >= 0x10000) { 
            uCode -= 0x10000;
            var uCodeLead = 0xD800 | (uCode >> 10);
            newBuf[j++] = uCodeLead & 0xFF;
            newBuf[j++] = uCodeLead >> 8;

            uCode = 0xDC00 | (uCode & 0x3FF);
        }
        newBuf[j++] = uCode & 0xFF;
        newBuf[j++] = uCode >> 8;

        // Reset trie node.
        nodeIdx = 0; seqStart = i+1;
    }

    this.nodeIdx = nodeIdx;
    this.prevBytes = (seqStart >= 0)
        ? Array.prototype.slice.call(buf, seqStart)
        : prevBytes.slice(seqStart + prevOffset).concat(Array.prototype.slice.call(buf));

    return newBuf.slice(0, j).toString('ucs2');
}

DBCSDecoder.prototype.end = function() {
    var ret = '';

    // Try to parse all remaining chars.
    while (this.prevBytes.length > 0) {
        // Skip 1 character in the buffer.
        ret += this.defaultCharUnicode;
        var bytesArr = this.prevBytes.slice(1);

        // Parse remaining as usual.
        this.prevBytes = [];
        this.nodeIdx = 0;
        if (bytesArr.length > 0)
            ret += this.write(bytesArr);
    }

    this.prevBytes = [];
    this.nodeIdx = 0;
    return ret;
}

// Binary search for GB18030. Returns largest i such that table[i] <= val.
function findIdx(table, val) {
    if (table[0] > val)
        return -1;

    var l = 0, r = table.length;
    while (l < r-1) { // always table[l] <= val < table[r]
        var mid = l + ((r-l+1) >> 1);
        if (table[mid] <= val)
            l = mid;
        else
            r = mid;
    }
    return l;
}


},{"safer-buffer":174}],60:[function(require,module,exports){
"use strict";

// Description of supported double byte encodings and aliases.
// Tables are not require()-d until they are needed to speed up library load.
// require()-s are direct to support Browserify.

module.exports = {
    
    // == Japanese/ShiftJIS ====================================================
    // All japanese encodings are based on JIS X set of standards:
    // JIS X 0201 - Single-byte encoding of ASCII + ¥ + Kana chars at 0xA1-0xDF.
    // JIS X 0208 - Main set of 6879 characters, placed in 94x94 plane, to be encoded by 2 bytes. 
    //              Has several variations in 1978, 1983, 1990 and 1997.
    // JIS X 0212 - Supplementary plane of 6067 chars in 94x94 plane. 1990. Effectively dead.
    // JIS X 0213 - Extension and modern replacement of 0208 and 0212. Total chars: 11233.
    //              2 planes, first is superset of 0208, second - revised 0212.
    //              Introduced in 2000, revised 2004. Some characters are in Unicode Plane 2 (0x2xxxx)

    // Byte encodings are:
    //  * Shift_JIS: Compatible with 0201, uses not defined chars in top half as lead bytes for double-byte
    //               encoding of 0208. Lead byte ranges: 0x81-0x9F, 0xE0-0xEF; Trail byte ranges: 0x40-0x7E, 0x80-0x9E, 0x9F-0xFC.
    //               Windows CP932 is a superset of Shift_JIS. Some companies added more chars, notably KDDI.
    //  * EUC-JP:    Up to 3 bytes per character. Used mostly on *nixes.
    //               0x00-0x7F       - lower part of 0201
    //               0x8E, 0xA1-0xDF - upper part of 0201
    //               (0xA1-0xFE)x2   - 0208 plane (94x94).
    //               0x8F, (0xA1-0xFE)x2 - 0212 plane (94x94).
    //  * JIS X 208: 7-bit, direct encoding of 0208. Byte ranges: 0x21-0x7E (94 values). Uncommon.
    //               Used as-is in ISO2022 family.
    //  * ISO2022-JP: Stateful encoding, with escape sequences to switch between ASCII, 
    //                0201-1976 Roman, 0208-1978, 0208-1983.
    //  * ISO2022-JP-1: Adds esc seq for 0212-1990.
    //  * ISO2022-JP-2: Adds esc seq for GB2313-1980, KSX1001-1992, ISO8859-1, ISO8859-7.
    //  * ISO2022-JP-3: Adds esc seq for 0201-1976 Kana set, 0213-2000 Planes 1, 2.
    //  * ISO2022-JP-2004: Adds 0213-2004 Plane 1.
    //
    // After JIS X 0213 appeared, Shift_JIS-2004, EUC-JISX0213 and ISO2022-JP-2004 followed, with just changing the planes.
    //
    // Overall, it seems that it's a mess :( http://www8.plala.or.jp/tkubota1/unicode-symbols-map2.html

    'shiftjis': {
        type: '_dbcs',
        table: function() { return require('./tables/shiftjis.json') },
        encodeAdd: {'\u00a5': 0x5C, '\u203E': 0x7E},
        encodeSkipVals: [{from: 0xED40, to: 0xF940}],
    },
    'csshiftjis': 'shiftjis',
    'mskanji': 'shiftjis',
    'sjis': 'shiftjis',
    'windows31j': 'shiftjis',
    'ms31j': 'shiftjis',
    'xsjis': 'shiftjis',
    'windows932': 'shiftjis',
    'ms932': 'shiftjis',
    '932': 'shiftjis',
    'cp932': 'shiftjis',

    'eucjp': {
        type: '_dbcs',
        table: function() { return require('./tables/eucjp.json') },
        encodeAdd: {'\u00a5': 0x5C, '\u203E': 0x7E},
    },

    // TODO: KDDI extension to Shift_JIS
    // TODO: IBM CCSID 942 = CP932, but F0-F9 custom chars and other char changes.
    // TODO: IBM CCSID 943 = Shift_JIS = CP932 with original Shift_JIS lower 128 chars.


    // == Chinese/GBK ==========================================================
    // http://en.wikipedia.org/wiki/GBK
    // We mostly implement W3C recommendation: https://www.w3.org/TR/encoding/#gbk-encoder

    // Oldest GB2312 (1981, ~7600 chars) is a subset of CP936
    'gb2312': 'cp936',
    'gb231280': 'cp936',
    'gb23121980': 'cp936',
    'csgb2312': 'cp936',
    'csiso58gb231280': 'cp936',
    'euccn': 'cp936',

    // Microsoft's CP936 is a subset and approximation of GBK.
    'windows936': 'cp936',
    'ms936': 'cp936',
    '936': 'cp936',
    'cp936': {
        type: '_dbcs',
        table: function() { return require('./tables/cp936.json') },
    },

    // GBK (~22000 chars) is an extension of CP936 that added user-mapped chars and some other.
    'gbk': {
        type: '_dbcs',
        table: function() { return require('./tables/cp936.json').concat(require('./tables/gbk-added.json')) },
    },
    'xgbk': 'gbk',
    'isoir58': 'gbk',

    // GB18030 is an algorithmic extension of GBK.
    // Main source: https://www.w3.org/TR/encoding/#gbk-encoder
    // http://icu-project.org/docs/papers/gb18030.html
    // http://source.icu-project.org/repos/icu/data/trunk/charset/data/xml/gb-18030-2000.xml
    // http://www.khngai.com/chinese/charmap/tblgbk.php?page=0
    'gb18030': {
        type: '_dbcs',
        table: function() { return require('./tables/cp936.json').concat(require('./tables/gbk-added.json')) },
        gb18030: function() { return require('./tables/gb18030-ranges.json') },
        encodeSkipVals: [0x80],
        encodeAdd: {'€': 0xA2E3},
    },

    'chinese': 'gb18030',


    // == Korean ===============================================================
    // EUC-KR, KS_C_5601 and KS X 1001 are exactly the same.
    'windows949': 'cp949',
    'ms949': 'cp949',
    '949': 'cp949',
    'cp949': {
        type: '_dbcs',
        table: function() { return require('./tables/cp949.json') },
    },

    'cseuckr': 'cp949',
    'csksc56011987': 'cp949',
    'euckr': 'cp949',
    'isoir149': 'cp949',
    'korean': 'cp949',
    'ksc56011987': 'cp949',
    'ksc56011989': 'cp949',
    'ksc5601': 'cp949',


    // == Big5/Taiwan/Hong Kong ================================================
    // There are lots of tables for Big5 and cp950. Please see the following links for history:
    // http://moztw.org/docs/big5/  http://www.haible.de/bruno/charsets/conversion-tables/Big5.html
    // Variations, in roughly number of defined chars:
    //  * Windows CP 950: Microsoft variant of Big5. Canonical: http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP950.TXT
    //  * Windows CP 951: Microsoft variant of Big5-HKSCS-2001. Seems to be never public. http://me.abelcheung.org/articles/research/what-is-cp951/
    //  * Big5-2003 (Taiwan standard) almost superset of cp950.
    //  * Unicode-at-on (UAO) / Mozilla 1.8. Falling out of use on the Web. Not supported by other browsers.
    //  * Big5-HKSCS (-2001, -2004, -2008). Hong Kong standard. 
    //    many unicode code points moved from PUA to Supplementary plane (U+2XXXX) over the years.
    //    Plus, it has 4 combining sequences.
    //    Seems that Mozilla refused to support it for 10 yrs. https://bugzilla.mozilla.org/show_bug.cgi?id=162431 https://bugzilla.mozilla.org/show_bug.cgi?id=310299
    //    because big5-hkscs is the only encoding to include astral characters in non-algorithmic way.
    //    Implementations are not consistent within browsers; sometimes labeled as just big5.
    //    MS Internet Explorer switches from big5 to big5-hkscs when a patch applied.
    //    Great discussion & recap of what's going on https://bugzilla.mozilla.org/show_bug.cgi?id=912470#c31
    //    In the encoder, it might make sense to support encoding old PUA mappings to Big5 bytes seq-s.
    //    Official spec: http://www.ogcio.gov.hk/en/business/tech_promotion/ccli/terms/doc/2003cmp_2008.txt
    //                   http://www.ogcio.gov.hk/tc/business/tech_promotion/ccli/terms/doc/hkscs-2008-big5-iso.txt
    // 
    // Current understanding of how to deal with Big5(-HKSCS) is in the Encoding Standard, http://encoding.spec.whatwg.org/#big5-encoder
    // Unicode mapping (http://www.unicode.org/Public/MAPPINGS/OBSOLETE/EASTASIA/OTHER/BIG5.TXT) is said to be wrong.

    'windows950': 'cp950',
    'ms950': 'cp950',
    '950': 'cp950',
    'cp950': {
        type: '_dbcs',
        table: function() { return require('./tables/cp950.json') },
    },

    // Big5 has many variations and is an extension of cp950. We use Encoding Standard's as a consensus.
    'big5': 'big5hkscs',
    'big5hkscs': {
        type: '_dbcs',
        table: function() { return require('./tables/cp950.json').concat(require('./tables/big5-added.json')) },
        encodeSkipVals: [0xa2cc],
    },

    'cnbig5': 'big5hkscs',
    'csbig5': 'big5hkscs',
    'xxbig5': 'big5hkscs',
};

},{"./tables/big5-added.json":66,"./tables/cp936.json":67,"./tables/cp949.json":68,"./tables/cp950.json":69,"./tables/eucjp.json":70,"./tables/gb18030-ranges.json":71,"./tables/gbk-added.json":72,"./tables/shiftjis.json":73}],61:[function(require,module,exports){
"use strict";

// Update this array if you add/rename/remove files in this directory.
// We support Browserify by skipping automatic module discovery and requiring modules directly.
var modules = [
    require("./internal"),
    require("./utf32"),
    require("./utf16"),
    require("./utf7"),
    require("./sbcs-codec"),
    require("./sbcs-data"),
    require("./sbcs-data-generated"),
    require("./dbcs-codec"),
    require("./dbcs-data"),
];

// Put all encoding/alias/codec definitions to single object and export it.
for (var i = 0; i < modules.length; i++) {
    var module = modules[i];
    for (var enc in module)
        if (Object.prototype.hasOwnProperty.call(module, enc))
            exports[enc] = module[enc];
}

},{"./dbcs-codec":59,"./dbcs-data":60,"./internal":62,"./sbcs-codec":63,"./sbcs-data":65,"./sbcs-data-generated":64,"./utf16":74,"./utf32":75,"./utf7":76}],62:[function(require,module,exports){
"use strict";
var Buffer = require("safer-buffer").Buffer;

// Export Node.js internal encodings.

module.exports = {
    // Encodings
    utf8:   { type: "_internal", bomAware: true},
    cesu8:  { type: "_internal", bomAware: true},
    unicode11utf8: "utf8",

    ucs2:   { type: "_internal", bomAware: true},
    utf16le: "ucs2",

    binary: { type: "_internal" },
    base64: { type: "_internal" },
    hex:    { type: "_internal" },

    // Codec.
    _internal: InternalCodec,
};

//------------------------------------------------------------------------------

function InternalCodec(codecOptions, iconv) {
    this.enc = codecOptions.encodingName;
    this.bomAware = codecOptions.bomAware;

    if (this.enc === "base64")
        this.encoder = InternalEncoderBase64;
    else if (this.enc === "cesu8") {
        this.enc = "utf8"; // Use utf8 for decoding.
        this.encoder = InternalEncoderCesu8;

        // Add decoder for versions of Node not supporting CESU-8
        if (Buffer.from('eda0bdedb2a9', 'hex').toString() !== '💩') {
            this.decoder = InternalDecoderCesu8;
            this.defaultCharUnicode = iconv.defaultCharUnicode;
        }
    }
}

InternalCodec.prototype.encoder = InternalEncoder;
InternalCodec.prototype.decoder = InternalDecoder;

//------------------------------------------------------------------------------

// We use node.js internal decoder. Its signature is the same as ours.
var StringDecoder = require('string_decoder').StringDecoder;

if (!StringDecoder.prototype.end) // Node v0.8 doesn't have this method.
    StringDecoder.prototype.end = function() {};


function InternalDecoder(options, codec) {
    this.decoder = new StringDecoder(codec.enc);
}

InternalDecoder.prototype.write = function(buf) {
    if (!Buffer.isBuffer(buf)) {
        buf = Buffer.from(buf);
    }

    return this.decoder.write(buf);
}

InternalDecoder.prototype.end = function() {
    return this.decoder.end();
}


//------------------------------------------------------------------------------
// Encoder is mostly trivial

function InternalEncoder(options, codec) {
    this.enc = codec.enc;
}

InternalEncoder.prototype.write = function(str) {
    return Buffer.from(str, this.enc);
}

InternalEncoder.prototype.end = function() {
}


//------------------------------------------------------------------------------
// Except base64 encoder, which must keep its state.

function InternalEncoderBase64(options, codec) {
    this.prevStr = '';
}

InternalEncoderBase64.prototype.write = function(str) {
    str = this.prevStr + str;
    var completeQuads = str.length - (str.length % 4);
    this.prevStr = str.slice(completeQuads);
    str = str.slice(0, completeQuads);

    return Buffer.from(str, "base64");
}

InternalEncoderBase64.prototype.end = function() {
    return Buffer.from(this.prevStr, "base64");
}


//------------------------------------------------------------------------------
// CESU-8 encoder is also special.

function InternalEncoderCesu8(options, codec) {
}

InternalEncoderCesu8.prototype.write = function(str) {
    var buf = Buffer.alloc(str.length * 3), bufIdx = 0;
    for (var i = 0; i < str.length; i++) {
        var charCode = str.charCodeAt(i);
        // Naive implementation, but it works because CESU-8 is especially easy
        // to convert from UTF-16 (which all JS strings are encoded in).
        if (charCode < 0x80)
            buf[bufIdx++] = charCode;
        else if (charCode < 0x800) {
            buf[bufIdx++] = 0xC0 + (charCode >>> 6);
            buf[bufIdx++] = 0x80 + (charCode & 0x3f);
        }
        else { // charCode will always be < 0x10000 in javascript.
            buf[bufIdx++] = 0xE0 + (charCode >>> 12);
            buf[bufIdx++] = 0x80 + ((charCode >>> 6) & 0x3f);
            buf[bufIdx++] = 0x80 + (charCode & 0x3f);
        }
    }
    return buf.slice(0, bufIdx);
}

InternalEncoderCesu8.prototype.end = function() {
}

//------------------------------------------------------------------------------
// CESU-8 decoder is not implemented in Node v4.0+

function InternalDecoderCesu8(options, codec) {
    this.acc = 0;
    this.contBytes = 0;
    this.accBytes = 0;
    this.defaultCharUnicode = codec.defaultCharUnicode;
}

InternalDecoderCesu8.prototype.write = function(buf) {
    var acc = this.acc, contBytes = this.contBytes, accBytes = this.accBytes, 
        res = '';
    for (var i = 0; i < buf.length; i++) {
        var curByte = buf[i];
        if ((curByte & 0xC0) !== 0x80) { // Leading byte
            if (contBytes > 0) { // Previous code is invalid
                res += this.defaultCharUnicode;
                contBytes = 0;
            }

            if (curByte < 0x80) { // Single-byte code
                res += String.fromCharCode(curByte);
            } else if (curByte < 0xE0) { // Two-byte code
                acc = curByte & 0x1F;
                contBytes = 1; accBytes = 1;
            } else if (curByte < 0xF0) { // Three-byte code
                acc = curByte & 0x0F;
                contBytes = 2; accBytes = 1;
            } else { // Four or more are not supported for CESU-8.
                res += this.defaultCharUnicode;
            }
        } else { // Continuation byte
            if (contBytes > 0) { // We're waiting for it.
                acc = (acc << 6) | (curByte & 0x3f);
                contBytes--; accBytes++;
                if (contBytes === 0) {
                    // Check for overlong encoding, but support Modified UTF-8 (encoding NULL as C0 80)
                    if (accBytes === 2 && acc < 0x80 && acc > 0)
                        res += this.defaultCharUnicode;
                    else if (accBytes === 3 && acc < 0x800)
                        res += this.defaultCharUnicode;
                    else
                        // Actually add character.
                        res += String.fromCharCode(acc);
                }
            } else { // Unexpected continuation byte
                res += this.defaultCharUnicode;
            }
        }
    }
    this.acc = acc; this.contBytes = contBytes; this.accBytes = accBytes;
    return res;
}

InternalDecoderCesu8.prototype.end = function() {
    var res = 0;
    if (this.contBytes > 0)
        res += this.defaultCharUnicode;
    return res;
}

},{"safer-buffer":174,"string_decoder":46}],63:[function(require,module,exports){
"use strict";
var Buffer = require("safer-buffer").Buffer;

// Single-byte codec. Needs a 'chars' string parameter that contains 256 or 128 chars that
// correspond to encoded bytes (if 128 - then lower half is ASCII). 

exports._sbcs = SBCSCodec;
function SBCSCodec(codecOptions, iconv) {
    if (!codecOptions)
        throw new Error("SBCS codec is called without the data.")
    
    // Prepare char buffer for decoding.
    if (!codecOptions.chars || (codecOptions.chars.length !== 128 && codecOptions.chars.length !== 256))
        throw new Error("Encoding '"+codecOptions.type+"' has incorrect 'chars' (must be of len 128 or 256)");
    
    if (codecOptions.chars.length === 128) {
        var asciiString = "";
        for (var i = 0; i < 128; i++)
            asciiString += String.fromCharCode(i);
        codecOptions.chars = asciiString + codecOptions.chars;
    }

    this.decodeBuf = Buffer.from(codecOptions.chars, 'ucs2');
    
    // Encoding buffer.
    var encodeBuf = Buffer.alloc(65536, iconv.defaultCharSingleByte.charCodeAt(0));

    for (var i = 0; i < codecOptions.chars.length; i++)
        encodeBuf[codecOptions.chars.charCodeAt(i)] = i;

    this.encodeBuf = encodeBuf;
}

SBCSCodec.prototype.encoder = SBCSEncoder;
SBCSCodec.prototype.decoder = SBCSDecoder;


function SBCSEncoder(options, codec) {
    this.encodeBuf = codec.encodeBuf;
}

SBCSEncoder.prototype.write = function(str) {
    var buf = Buffer.alloc(str.length);
    for (var i = 0; i < str.length; i++)
        buf[i] = this.encodeBuf[str.charCodeAt(i)];
    
    return buf;
}

SBCSEncoder.prototype.end = function() {
}


function SBCSDecoder(options, codec) {
    this.decodeBuf = codec.decodeBuf;
}

SBCSDecoder.prototype.write = function(buf) {
    // Strings are immutable in JS -> we use ucs2 buffer to speed up computations.
    var decodeBuf = this.decodeBuf;
    var newBuf = Buffer.alloc(buf.length*2);
    var idx1 = 0, idx2 = 0;
    for (var i = 0; i < buf.length; i++) {
        idx1 = buf[i]*2; idx2 = i*2;
        newBuf[idx2] = decodeBuf[idx1];
        newBuf[idx2+1] = decodeBuf[idx1+1];
    }
    return newBuf.toString('ucs2');
}

SBCSDecoder.prototype.end = function() {
}

},{"safer-buffer":174}],64:[function(require,module,exports){
"use strict";

// Generated data for sbcs codec. Don't edit manually. Regenerate using generation/gen-sbcs.js script.
module.exports = {
  "437": "cp437",
  "737": "cp737",
  "775": "cp775",
  "850": "cp850",
  "852": "cp852",
  "855": "cp855",
  "856": "cp856",
  "857": "cp857",
  "858": "cp858",
  "860": "cp860",
  "861": "cp861",
  "862": "cp862",
  "863": "cp863",
  "864": "cp864",
  "865": "cp865",
  "866": "cp866",
  "869": "cp869",
  "874": "windows874",
  "922": "cp922",
  "1046": "cp1046",
  "1124": "cp1124",
  "1125": "cp1125",
  "1129": "cp1129",
  "1133": "cp1133",
  "1161": "cp1161",
  "1162": "cp1162",
  "1163": "cp1163",
  "1250": "windows1250",
  "1251": "windows1251",
  "1252": "windows1252",
  "1253": "windows1253",
  "1254": "windows1254",
  "1255": "windows1255",
  "1256": "windows1256",
  "1257": "windows1257",
  "1258": "windows1258",
  "28591": "iso88591",
  "28592": "iso88592",
  "28593": "iso88593",
  "28594": "iso88594",
  "28595": "iso88595",
  "28596": "iso88596",
  "28597": "iso88597",
  "28598": "iso88598",
  "28599": "iso88599",
  "28600": "iso885910",
  "28601": "iso885911",
  "28603": "iso885913",
  "28604": "iso885914",
  "28605": "iso885915",
  "28606": "iso885916",
  "windows874": {
    "type": "_sbcs",
    "chars": "€����…�����������‘’“”•–—�������� กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
  },
  "win874": "windows874",
  "cp874": "windows874",
  "windows1250": {
    "type": "_sbcs",
    "chars": "€�‚�„…†‡�‰Š‹ŚŤŽŹ�‘’“”•–—�™š›śťžź ˇ˘Ł¤Ą¦§¨©Ş«¬­®Ż°±˛ł´µ¶·¸ąş»Ľ˝ľżŔÁÂĂÄĹĆÇČÉĘËĚÍÎĎĐŃŇÓÔŐÖ×ŘŮÚŰÜÝŢßŕáâăäĺćçčéęëěíîďđńňóôőö÷řůúűüýţ˙"
  },
  "win1250": "windows1250",
  "cp1250": "windows1250",
  "windows1251": {
    "type": "_sbcs",
    "chars": "ЂЃ‚ѓ„…†‡€‰Љ‹ЊЌЋЏђ‘’“”•–—�™љ›њќћџ ЎўЈ¤Ґ¦§Ё©Є«¬­®Ї°±Ііґµ¶·ё№є»јЅѕїАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя"
  },
  "win1251": "windows1251",
  "cp1251": "windows1251",
  "windows1252": {
    "type": "_sbcs",
    "chars": "€�‚ƒ„…†‡ˆ‰Š‹Œ�Ž��‘’“”•–—˜™š›œ�žŸ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
  },
  "win1252": "windows1252",
  "cp1252": "windows1252",
  "windows1253": {
    "type": "_sbcs",
    "chars": "€�‚ƒ„…†‡�‰�‹�����‘’“”•–—�™�›���� ΅Ά£¤¥¦§¨©�«¬­®―°±²³΄µ¶·ΈΉΊ»Ό½ΎΏΐΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡ�ΣΤΥΦΧΨΩΪΫάέήίΰαβγδεζηθικλμνξοπρςστυφχψωϊϋόύώ�"
  },
  "win1253": "windows1253",
  "cp1253": "windows1253",
  "windows1254": {
    "type": "_sbcs",
    "chars": "€�‚ƒ„…†‡ˆ‰Š‹Œ����‘’“”•–—˜™š›œ��Ÿ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏĞÑÒÓÔÕÖ×ØÙÚÛÜİŞßàáâãäåæçèéêëìíîïğñòóôõö÷øùúûüışÿ"
  },
  "win1254": "windows1254",
  "cp1254": "windows1254",
  "windows1255": {
    "type": "_sbcs",
    "chars": "€�‚ƒ„…†‡ˆ‰�‹�����‘’“”•–—˜™�›���� ¡¢£₪¥¦§¨©×«¬­®¯°±²³´µ¶·¸¹÷»¼½¾¿ְֱֲֳִֵֶַָֹֺֻּֽ־ֿ׀ׁׂ׃װױײ׳״�������אבגדהוזחטיךכלםמןנסעףפץצקרשת��‎‏�"
  },
  "win1255": "windows1255",
  "cp1255": "windows1255",
  "windows1256": {
    "type": "_sbcs",
    "chars": "€پ‚ƒ„…†‡ˆ‰ٹ‹Œچژڈگ‘’“”•–—ک™ڑ›œ‌‍ں ،¢£¤¥¦§¨©ھ«¬­®¯°±²³´µ¶·¸¹؛»¼½¾؟ہءآأؤإئابةتثجحخدذرزسشصض×طظعغـفقكàلâمنهوçèéêëىيîïًٌٍَôُِ÷ّùْûü‎‏ے"
  },
  "win1256": "windows1256",
  "cp1256": "windows1256",
  "windows1257": {
    "type": "_sbcs",
    "chars": "€�‚�„…†‡�‰�‹�¨ˇ¸�‘’“”•–—�™�›�¯˛� �¢£¤�¦§Ø©Ŗ«¬­®Æ°±²³´µ¶·ø¹ŗ»¼½¾æĄĮĀĆÄÅĘĒČÉŹĖĢĶĪĻŠŃŅÓŌÕÖ×ŲŁŚŪÜŻŽßąįāćäåęēčéźėģķīļšńņóōõö÷ųłśūüżž˙"
  },
  "win1257": "windows1257",
  "cp1257": "windows1257",
  "windows1258": {
    "type": "_sbcs",
    "chars": "€�‚ƒ„…†‡ˆ‰�‹Œ����‘’“”•–—˜™�›œ��Ÿ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂĂÄÅÆÇÈÉÊË̀ÍÎÏĐÑ̉ÓÔƠÖ×ØÙÚÛÜỮßàáâăäåæçèéêë́íîïđṇ̃óôơö÷øùúûüư₫ÿ"
  },
  "win1258": "windows1258",
  "cp1258": "windows1258",
  "iso88591": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
  },
  "cp28591": "iso88591",
  "iso88592": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ Ą˘Ł¤ĽŚ§¨ŠŞŤŹ­ŽŻ°ą˛ł´ľśˇ¸šşťź˝žżŔÁÂĂÄĹĆÇČÉĘËĚÍÎĎĐŃŇÓÔŐÖ×ŘŮÚŰÜÝŢßŕáâăäĺćçčéęëěíîďđńňóôőö÷řůúűüýţ˙"
  },
  "cp28592": "iso88592",
  "iso88593": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ Ħ˘£¤�Ĥ§¨İŞĞĴ­�Ż°ħ²³´µĥ·¸ışğĵ½�żÀÁÂ�ÄĊĈÇÈÉÊËÌÍÎÏ�ÑÒÓÔĠÖ×ĜÙÚÛÜŬŜßàáâ�äċĉçèéêëìíîï�ñòóôġö÷ĝùúûüŭŝ˙"
  },
  "cp28593": "iso88593",
  "iso88594": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ĄĸŖ¤ĨĻ§¨ŠĒĢŦ­Ž¯°ą˛ŗ´ĩļˇ¸šēģŧŊžŋĀÁÂÃÄÅÆĮČÉĘËĖÍÎĪĐŅŌĶÔÕÖ×ØŲÚÛÜŨŪßāáâãäåæįčéęëėíîīđņōķôõö÷øųúûüũū˙"
  },
  "cp28594": "iso88594",
  "iso88595": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ЁЂЃЄЅІЇЈЉЊЋЌ­ЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя№ёђѓєѕіїјљњћќ§ўџ"
  },
  "cp28595": "iso88595",
  "iso88596": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ���¤�������،­�������������؛���؟�ءآأؤإئابةتثجحخدذرزسشصضطظعغ�����ـفقكلمنهوىيًٌٍَُِّْ�������������"
  },
  "cp28596": "iso88596",
  "iso88597": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ‘’£€₯¦§¨©ͺ«¬­�―°±²³΄΅Ά·ΈΉΊ»Ό½ΎΏΐΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡ�ΣΤΥΦΧΨΩΪΫάέήίΰαβγδεζηθικλμνξοπρςστυφχψωϊϋόύώ�"
  },
  "cp28597": "iso88597",
  "iso88598": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ �¢£¤¥¦§¨©×«¬­®¯°±²³´µ¶·¸¹÷»¼½¾��������������������������������‗אבגדהוזחטיךכלםמןנסעףפץצקרשת��‎‏�"
  },
  "cp28598": "iso88598",
  "iso88599": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏĞÑÒÓÔÕÖ×ØÙÚÛÜİŞßàáâãäåæçèéêëìíîïğñòóôõö÷øùúûüışÿ"
  },
  "cp28599": "iso88599",
  "iso885910": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ĄĒĢĪĨĶ§ĻĐŠŦŽ­ŪŊ°ąēģīĩķ·ļđšŧž―ūŋĀÁÂÃÄÅÆĮČÉĘËĖÍÎÏÐŅŌÓÔÕÖŨØŲÚÛÜÝÞßāáâãäåæįčéęëėíîïðņōóôõöũøųúûüýþĸ"
  },
  "cp28600": "iso885910",
  "iso885911": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
  },
  "cp28601": "iso885911",
  "iso885913": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ”¢£¤„¦§Ø©Ŗ«¬­®Æ°±²³“µ¶·ø¹ŗ»¼½¾æĄĮĀĆÄÅĘĒČÉŹĖĢĶĪĻŠŃŅÓŌÕÖ×ŲŁŚŪÜŻŽßąįāćäåęēčéźėģķīļšńņóōõö÷ųłśūüżž’"
  },
  "cp28603": "iso885913",
  "iso885914": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ Ḃḃ£ĊċḊ§Ẁ©ẂḋỲ­®ŸḞḟĠġṀṁ¶ṖẁṗẃṠỳẄẅṡÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏŴÑÒÓÔÕÖṪØÙÚÛÜÝŶßàáâãäåæçèéêëìíîïŵñòóôõöṫøùúûüýŷÿ"
  },
  "cp28604": "iso885914",
  "iso885915": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£€¥Š§š©ª«¬­®¯°±²³Žµ¶·ž¹º»ŒœŸ¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
  },
  "cp28605": "iso885915",
  "iso885916": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ĄąŁ€„Š§š©Ș«Ź­źŻ°±ČłŽ”¶·žčș»ŒœŸżÀÁÂĂÄĆÆÇÈÉÊËÌÍÎÏĐŃÒÓÔŐÖŚŰÙÚÛÜĘȚßàáâăäćæçèéêëìíîïđńòóôőöśűùúûüęțÿ"
  },
  "cp28606": "iso885916",
  "cp437": {
    "type": "_sbcs",
    "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
  },
  "ibm437": "cp437",
  "csibm437": "cp437",
  "cp737": {
    "type": "_sbcs",
    "chars": "ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρσςτυφχψ░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀ωάέήϊίόύϋώΆΈΉΊΌΎΏ±≥≤ΪΫ÷≈°∙·√ⁿ²■ "
  },
  "ibm737": "cp737",
  "csibm737": "cp737",
  "cp775": {
    "type": "_sbcs",
    "chars": "ĆüéāäģåćłēŖŗīŹÄÅÉæÆōöĢ¢ŚśÖÜø£ØפĀĪóŻżź”¦©®¬½¼Ł«»░▒▓│┤ĄČĘĖ╣║╗╝ĮŠ┐└┴┬├─┼ŲŪ╚╔╩╦╠═╬Žąčęėįšųūž┘┌█▄▌▐▀ÓßŌŃõÕµńĶķĻļņĒŅ’­±“¾¶§÷„°∙·¹³²■ "
  },
  "ibm775": "cp775",
  "csibm775": "cp775",
  "cp850": {
    "type": "_sbcs",
    "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£Ø׃áíóúñѪº¿®¬½¼¡«»░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐└┴┬├─┼ãÃ╚╔╩╦╠═╬¤ðÐÊËÈıÍÎÏ┘┌█▄¦Ì▀ÓßÔÒõÕµþÞÚÛÙýݯ´­±‗¾¶§÷¸°¨·¹³²■ "
  },
  "ibm850": "cp850",
  "csibm850": "cp850",
  "cp852": {
    "type": "_sbcs",
    "chars": "ÇüéâäůćçłëŐőîŹÄĆÉĹĺôöĽľŚśÖÜŤťŁ×čáíóúĄąŽžĘ꬟Ⱥ«»░▒▓│┤ÁÂĚŞ╣║╗╝Żż┐└┴┬├─┼Ăă╚╔╩╦╠═╬¤đĐĎËďŇÍÎě┘┌█▄ŢŮ▀ÓßÔŃńňŠšŔÚŕŰýÝţ´­˝˛ˇ˘§÷¸°¨˙űŘř■ "
  },
  "ibm852": "cp852",
  "csibm852": "cp852",
  "cp855": {
    "type": "_sbcs",
    "chars": "ђЂѓЃёЁєЄѕЅіІїЇјЈљЉњЊћЋќЌўЎџЏюЮъЪаАбБцЦдДеЕфФгГ«»░▒▓│┤хХиИ╣║╗╝йЙ┐└┴┬├─┼кК╚╔╩╦╠═╬¤лЛмМнНоОп┘┌█▄Пя▀ЯрРсСтТуУжЖвВьЬ№­ыЫзЗшШэЭщЩчЧ§■ "
  },
  "ibm855": "cp855",
  "csibm855": "cp855",
  "cp856": {
    "type": "_sbcs",
    "chars": "אבגדהוזחטיךכלםמןנסעףפץצקרשת�£�×����������®¬½¼�«»░▒▓│┤���©╣║╗╝¢¥┐└┴┬├─┼��╚╔╩╦╠═╬¤���������┘┌█▄¦�▀������µ�������¯´­±‗¾¶§÷¸°¨·¹³²■ "
  },
  "ibm856": "cp856",
  "csibm856": "cp856",
  "cp857": {
    "type": "_sbcs",
    "chars": "ÇüéâäàåçêëèïîıÄÅÉæÆôöòûùİÖÜø£ØŞşáíóúñÑĞ𿮬½¼¡«»░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐└┴┬├─┼ãÃ╚╔╩╦╠═╬¤ºªÊËÈ�ÍÎÏ┘┌█▄¦Ì▀ÓßÔÒõÕµ�×ÚÛÙìÿ¯´­±�¾¶§÷¸°¨·¹³²■ "
  },
  "ibm857": "cp857",
  "csibm857": "cp857",
  "cp858": {
    "type": "_sbcs",
    "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£Ø׃áíóúñѪº¿®¬½¼¡«»░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐└┴┬├─┼ãÃ╚╔╩╦╠═╬¤ðÐÊËÈ€ÍÎÏ┘┌█▄¦Ì▀ÓßÔÒõÕµþÞÚÛÙýݯ´­±‗¾¶§÷¸°¨·¹³²■ "
  },
  "ibm858": "cp858",
  "csibm858": "cp858",
  "cp860": {
    "type": "_sbcs",
    "chars": "ÇüéâãàÁçêÊèÍÔìÃÂÉÀÈôõòÚùÌÕÜ¢£Ù₧ÓáíóúñѪº¿Ò¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
  },
  "ibm860": "cp860",
  "csibm860": "cp860",
  "cp861": {
    "type": "_sbcs",
    "chars": "ÇüéâäàåçêëèÐðÞÄÅÉæÆôöþûÝýÖÜø£Ø₧ƒáíóúÁÍÓÚ¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
  },
  "ibm861": "cp861",
  "csibm861": "cp861",
  "cp862": {
    "type": "_sbcs",
    "chars": "אבגדהוזחטיךכלםמןנסעףפץצקרשת¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
  },
  "ibm862": "cp862",
  "csibm862": "cp862",
  "cp863": {
    "type": "_sbcs",
    "chars": "ÇüéâÂà¶çêëèïî‗À§ÉÈÊôËÏûù¤ÔÜ¢£ÙÛƒ¦´óú¨¸³¯Î⌐¬½¼¾«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
  },
  "ibm863": "cp863",
  "csibm863": "cp863",
  "cp864": {
    "type": "_sbcs",
    "chars": "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$٪&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~°·∙√▒─│┼┤┬├┴┐┌└┘β∞φ±½¼≈«»ﻷﻸ��ﻻﻼ� ­ﺂ£¤ﺄ��ﺎﺏﺕﺙ،ﺝﺡﺥ٠١٢٣٤٥٦٧٨٩ﻑ؛ﺱﺵﺹ؟¢ﺀﺁﺃﺅﻊﺋﺍﺑﺓﺗﺛﺟﺣﺧﺩﺫﺭﺯﺳﺷﺻﺿﻁﻅﻋﻏ¦¬÷×ﻉـﻓﻗﻛﻟﻣﻧﻫﻭﻯﻳﺽﻌﻎﻍﻡﹽّﻥﻩﻬﻰﻲﻐﻕﻵﻶﻝﻙﻱ■�"
  },
  "ibm864": "cp864",
  "csibm864": "cp864",
  "cp865": {
    "type": "_sbcs",
    "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£Ø₧ƒáíóúñѪº¿⌐¬½¼¡«¤░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
  },
  "ibm865": "cp865",
  "csibm865": "cp865",
  "cp866": {
    "type": "_sbcs",
    "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмноп░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀рстуфхцчшщъыьэюяЁёЄєЇїЎў°∙·√№¤■ "
  },
  "ibm866": "cp866",
  "csibm866": "cp866",
  "cp869": {
    "type": "_sbcs",
    "chars": "������Ά�·¬¦‘’Έ―ΉΊΪΌ��ΎΫ©Ώ²³ά£έήίϊΐόύΑΒΓΔΕΖΗ½ΘΙ«»░▒▓│┤ΚΛΜΝ╣║╗╝ΞΟ┐└┴┬├─┼ΠΡ╚╔╩╦╠═╬ΣΤΥΦΧΨΩαβγ┘┌█▄δε▀ζηθικλμνξοπρσςτ΄­±υφχ§ψ΅°¨ωϋΰώ■ "
  },
  "ibm869": "cp869",
  "csibm869": "cp869",
  "cp922": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬­®‾°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏŠÑÒÓÔÕÖ×ØÙÚÛÜÝŽßàáâãäåæçèéêëìíîïšñòóôõö÷øùúûüýžÿ"
  },
  "ibm922": "cp922",
  "csibm922": "cp922",
  "cp1046": {
    "type": "_sbcs",
    "chars": "ﺈ×÷ﹱˆ■│─┐┌└┘ﹹﹻﹽﹿﹷﺊﻰﻳﻲﻎﻏﻐﻶﻸﻺﻼ ¤ﺋﺑﺗﺛﺟﺣ،­ﺧﺳ٠١٢٣٤٥٦٧٨٩ﺷ؛ﺻﺿﻊ؟ﻋءآأؤإئابةتثجحخدذرزسشصضطﻇعغﻌﺂﺄﺎﻓـفقكلمنهوىيًٌٍَُِّْﻗﻛﻟﻵﻷﻹﻻﻣﻧﻬﻩ�"
  },
  "ibm1046": "cp1046",
  "csibm1046": "cp1046",
  "cp1124": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ЁЂҐЄЅІЇЈЉЊЋЌ­ЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя№ёђґєѕіїјљњћќ§ўџ"
  },
  "ibm1124": "cp1124",
  "csibm1124": "cp1124",
  "cp1125": {
    "type": "_sbcs",
    "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмноп░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀рстуфхцчшщъыьэюяЁёҐґЄєІіЇї·√№¤■ "
  },
  "ibm1125": "cp1125",
  "csibm1125": "cp1125",
  "cp1129": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§œ©ª«¬­®¯°±²³Ÿµ¶·Œ¹º»¼½¾¿ÀÁÂĂÄÅÆÇÈÉÊË̀ÍÎÏĐÑ̉ÓÔƠÖ×ØÙÚÛÜỮßàáâăäåæçèéêë́íîïđṇ̃óôơö÷øùúûüư₫ÿ"
  },
  "ibm1129": "cp1129",
  "csibm1129": "cp1129",
  "cp1133": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ກຂຄງຈສຊຍດຕຖທນບປຜຝພຟມຢຣລວຫອຮ���ຯະາຳິີຶືຸູຼັົຽ���ເແໂໃໄ່້໊໋໌ໍໆ�ໜໝ₭����������������໐໑໒໓໔໕໖໗໘໙��¢¬¦�"
  },
  "ibm1133": "cp1133",
  "csibm1133": "cp1133",
  "cp1161": {
    "type": "_sbcs",
    "chars": "��������������������������������่กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู้๊๋€฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛¢¬¦ "
  },
  "ibm1161": "cp1161",
  "csibm1161": "cp1161",
  "cp1162": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
  },
  "ibm1162": "cp1162",
  "csibm1162": "cp1162",
  "cp1163": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£€¥¦§œ©ª«¬­®¯°±²³Ÿµ¶·Œ¹º»¼½¾¿ÀÁÂĂÄÅÆÇÈÉÊË̀ÍÎÏĐÑ̉ÓÔƠÖ×ØÙÚÛÜỮßàáâăäåæçèéêë́íîïđṇ̃óôơö÷øùúûüư₫ÿ"
  },
  "ibm1163": "cp1163",
  "csibm1163": "cp1163",
  "maccroatian": {
    "type": "_sbcs",
    "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®Š™´¨≠ŽØ∞±≤≥∆µ∂∑∏š∫ªºΩžø¿¡¬√ƒ≈Ć«Č… ÀÃÕŒœĐ—“”‘’÷◊�©⁄¤‹›Æ»–·‚„‰ÂćÁčÈÍÎÏÌÓÔđÒÚÛÙıˆ˜¯πË˚¸Êæˇ"
  },
  "maccyrillic": {
    "type": "_sbcs",
    "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ†°¢£§•¶І®©™Ђђ≠Ѓѓ∞±≤≥іµ∂ЈЄєЇїЉљЊњјЅ¬√ƒ≈∆«»… ЋћЌќѕ–—“”‘’÷„ЎўЏџ№Ёёяабвгдежзийклмнопрстуфхцчшщъыьэю¤"
  },
  "macgreek": {
    "type": "_sbcs",
    "chars": "Ĺ²É³ÖÜ΅àâä΄¨çéèê룙î‰ôö¦­ùûü†ΓΔΘΛΞΠß®©ΣΪ§≠°·Α±≤≥¥ΒΕΖΗΙΚΜΦΫΨΩάΝ¬ΟΡ≈Τ«»… ΥΧΆΈœ–―“”‘’÷ΉΊΌΎέήίόΏύαβψδεφγηιξκλμνοπώρστθωςχυζϊϋΐΰ�"
  },
  "maciceland": {
    "type": "_sbcs",
    "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûüÝ°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤ÐðÞþý·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
  },
  "macroman": {
    "type": "_sbcs",
    "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤‹›fifl‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
  },
  "macromania": {
    "type": "_sbcs",
    "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ĂŞ∞±≤≥¥µ∂∑∏π∫ªºΩăş¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤‹›Ţţ‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
  },
  "macthai": {
    "type": "_sbcs",
    "chars": "«»…“”�•‘’� กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู​–—฿เแโใไๅๆ็่้๊๋์ํ™๏๐๑๒๓๔๕๖๗๘๙®©����"
  },
  "macturkish": {
    "type": "_sbcs",
    "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸĞğİıŞş‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙ�ˆ˜¯˘˙˚¸˝˛ˇ"
  },
  "macukraine": {
    "type": "_sbcs",
    "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ†°Ґ£§•¶І®©™Ђђ≠Ѓѓ∞±≤≥іµґЈЄєЇїЉљЊњјЅ¬√ƒ≈∆«»… ЋћЌќѕ–—“”‘’÷„ЎўЏџ№Ёёяабвгдежзийклмнопрстуфхцчшщъыьэю¤"
  },
  "koi8r": {
    "type": "_sbcs",
    "chars": "─│┌┐└┘├┤┬┴┼▀▄█▌▐░▒▓⌠■∙√≈≤≥ ⌡°²·÷═║╒ё╓╔╕╖╗╘╙╚╛╜╝╞╟╠╡Ё╢╣╤╥╦╧╨╩╪╫╬©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
  },
  "koi8u": {
    "type": "_sbcs",
    "chars": "─│┌┐└┘├┤┬┴┼▀▄█▌▐░▒▓⌠■∙√≈≤≥ ⌡°²·÷═║╒ёє╔ії╗╘╙╚╛ґ╝╞╟╠╡ЁЄ╣ІЇ╦╧╨╩╪Ґ╬©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
  },
  "koi8ru": {
    "type": "_sbcs",
    "chars": "─│┌┐└┘├┤┬┴┼▀▄█▌▐░▒▓⌠■∙√≈≤≥ ⌡°²·÷═║╒ёє╔ії╗╘╙╚╛ґў╞╟╠╡ЁЄ╣ІЇ╦╧╨╩╪ҐЎ©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
  },
  "koi8t": {
    "type": "_sbcs",
    "chars": "қғ‚Ғ„…†‡�‰ҳ‹ҲҷҶ�Қ‘’“”•–—�™�›�����ӯӮё¤ӣ¦§���«¬­®�°±²Ё�Ӣ¶·�№�»���©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
  },
  "armscii8": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ �և։)(»«—.՝,-֊…՜՛՞ԱաԲբԳգԴդԵեԶզԷէԸըԹթԺժԻիԼլԽխԾծԿկՀհՁձՂղՃճՄմՅյՆնՇշՈոՉչՊպՋջՌռՍսՎվՏտՐրՑցՒւՓփՔքՕօՖֆ՚�"
  },
  "rk1048": {
    "type": "_sbcs",
    "chars": "ЂЃ‚ѓ„…†‡€‰Љ‹ЊҚҺЏђ‘’“”•–—�™љ›њқһџ ҰұӘ¤Ө¦§Ё©Ғ«¬­®Ү°±Ііөµ¶·ё№ғ»әҢңүАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя"
  },
  "tcvn": {
    "type": "_sbcs",
    "chars": "\u0000ÚỤ\u0003ỪỬỮ\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010ỨỰỲỶỸÝỴ\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~ÀẢÃÁẠẶẬÈẺẼÉẸỆÌỈĨÍỊÒỎÕÓỌỘỜỞỠỚỢÙỦŨ ĂÂÊÔƠƯĐăâêôơưđẶ̀̀̉̃́àảãáạẲằẳẵắẴẮẦẨẪẤỀặầẩẫấậèỂẻẽéẹềểễếệìỉỄẾỒĩíịòỔỏõóọồổỗốộờởỡớợùỖủũúụừửữứựỳỷỹýỵỐ"
  },
  "georgianacademy": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿აბგდევზთიკლმნოპჟრსტუფქღყშჩცძწჭხჯჰჱჲჳჴჵჶçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
  },
  "georgianps": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿აბგდევზჱთიკლმნჲოპჟრსტჳუფქღყშჩცძწჭხჴჯჰჵæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
  },
  "pt154": {
    "type": "_sbcs",
    "chars": "ҖҒӮғ„…ҶҮҲүҠӢҢҚҺҸҗ‘’“”•–—ҳҷҡӣңқһҹ ЎўЈӨҘҰ§Ё©Ә«¬ӯ®Ҝ°ұІіҙө¶·ё№ә»јҪҫҝАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя"
  },
  "viscii": {
    "type": "_sbcs",
    "chars": "\u0000\u0001Ẳ\u0003\u0004ẴẪ\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013Ỷ\u0015\u0016\u0017\u0018Ỹ\u001a\u001b\u001c\u001dỴ\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~ẠẮẰẶẤẦẨẬẼẸẾỀỂỄỆỐỒỔỖỘỢỚỜỞỊỎỌỈỦŨỤỲÕắằặấầẩậẽẹếềểễệốồổỗỠƠộờởịỰỨỪỬơớƯÀÁÂÃẢĂẳẵÈÉÊẺÌÍĨỳĐứÒÓÔạỷừửÙÚỹỵÝỡưàáâãảăữẫèéêẻìíĩỉđựòóôõỏọụùúũủýợỮ"
  },
  "iso646cn": {
    "type": "_sbcs",
    "chars": "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#¥%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}‾��������������������������������������������������������������������������������������������������������������������������������"
  },
  "iso646jp": {
    "type": "_sbcs",
    "chars": "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[¥]^_`abcdefghijklmnopqrstuvwxyz{|}‾��������������������������������������������������������������������������������������������������������������������������������"
  },
  "hproman8": {
    "type": "_sbcs",
    "chars": "€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ÀÂÈÊËÎÏ´ˋˆ¨˜ÙÛ₤¯Ýý°ÇçÑñ¡¿¤£¥§ƒ¢âêôûáéóúàèòùäëöüÅîØÆåíøæÄìÖÜÉïßÔÁÃãÐðÍÌÓÒÕõŠšÚŸÿÞþ·µ¶¾—¼½ªº«■»±�"
  },
  "macintosh": {
    "type": "_sbcs",
    "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤‹›fifl‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
  },
  "ascii": {
    "type": "_sbcs",
    "chars": "��������������������������������������������������������������������������������������������������������������������������������"
  },
  "tis620": {
    "type": "_sbcs",
    "chars": "���������������������������������กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
  }
}
},{}],65:[function(require,module,exports){
"use strict";

// Manually added data to be used by sbcs codec in addition to generated one.

module.exports = {
    // Not supported by iconv, not sure why.
    "10029": "maccenteuro",
    "maccenteuro": {
        "type": "_sbcs",
        "chars": "ÄĀāÉĄÖÜáąČäčĆć鏟ĎíďĒēĖóėôöõúĚěü†°Ę£§•¶ß®©™ę¨≠ģĮįĪ≤≥īĶ∂∑łĻļĽľĹĺŅņѬ√ńŇ∆«»… ňŐÕőŌ–—“”‘’÷◊ōŔŕŘ‹›řŖŗŠ‚„šŚśÁŤťÍŽžŪÓÔūŮÚůŰűŲųÝýķŻŁżĢˇ"
    },

    "808": "cp808",
    "ibm808": "cp808",
    "cp808": {
        "type": "_sbcs",
        "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмноп░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀рстуфхцчшщъыьэюяЁёЄєЇїЎў°∙·√№€■ "
    },

    "mik": {
        "type": "_sbcs",
        "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя└┴┬├─┼╣║╚╔╩╦╠═╬┐░▒▓│┤№§╗╝┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
    },

    "cp720": {
        "type": "_sbcs",
        "chars": "\x80\x81éâ\x84à\x86çêëèïî\x8d\x8e\x8f\x90\u0651\u0652ô¤ـûùءآأؤ£إئابةتثجحخدذرزسشص«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀ضطظعغفµقكلمنهوىي≡\u064b\u064c\u064d\u064e\u064f\u0650≈°∙·√ⁿ²■\u00a0"
    },

    // Aliases of generated encodings.
    "ascii8bit": "ascii",
    "usascii": "ascii",
    "ansix34": "ascii",
    "ansix341968": "ascii",
    "ansix341986": "ascii",
    "csascii": "ascii",
    "cp367": "ascii",
    "ibm367": "ascii",
    "isoir6": "ascii",
    "iso646us": "ascii",
    "iso646irv": "ascii",
    "us": "ascii",

    "latin1": "iso88591",
    "latin2": "iso88592",
    "latin3": "iso88593",
    "latin4": "iso88594",
    "latin5": "iso88599",
    "latin6": "iso885910",
    "latin7": "iso885913",
    "latin8": "iso885914",
    "latin9": "iso885915",
    "latin10": "iso885916",

    "csisolatin1": "iso88591",
    "csisolatin2": "iso88592",
    "csisolatin3": "iso88593",
    "csisolatin4": "iso88594",
    "csisolatincyrillic": "iso88595",
    "csisolatinarabic": "iso88596",
    "csisolatingreek" : "iso88597",
    "csisolatinhebrew": "iso88598",
    "csisolatin5": "iso88599",
    "csisolatin6": "iso885910",

    "l1": "iso88591",
    "l2": "iso88592",
    "l3": "iso88593",
    "l4": "iso88594",
    "l5": "iso88599",
    "l6": "iso885910",
    "l7": "iso885913",
    "l8": "iso885914",
    "l9": "iso885915",
    "l10": "iso885916",

    "isoir14": "iso646jp",
    "isoir57": "iso646cn",
    "isoir100": "iso88591",
    "isoir101": "iso88592",
    "isoir109": "iso88593",
    "isoir110": "iso88594",
    "isoir144": "iso88595",
    "isoir127": "iso88596",
    "isoir126": "iso88597",
    "isoir138": "iso88598",
    "isoir148": "iso88599",
    "isoir157": "iso885910",
    "isoir166": "tis620",
    "isoir179": "iso885913",
    "isoir199": "iso885914",
    "isoir203": "iso885915",
    "isoir226": "iso885916",

    "cp819": "iso88591",
    "ibm819": "iso88591",

    "cyrillic": "iso88595",

    "arabic": "iso88596",
    "arabic8": "iso88596",
    "ecma114": "iso88596",
    "asmo708": "iso88596",

    "greek" : "iso88597",
    "greek8" : "iso88597",
    "ecma118" : "iso88597",
    "elot928" : "iso88597",

    "hebrew": "iso88598",
    "hebrew8": "iso88598",

    "turkish": "iso88599",
    "turkish8": "iso88599",

    "thai": "iso885911",
    "thai8": "iso885911",

    "celtic": "iso885914",
    "celtic8": "iso885914",
    "isoceltic": "iso885914",

    "tis6200": "tis620",
    "tis62025291": "tis620",
    "tis62025330": "tis620",

    "10000": "macroman",
    "10006": "macgreek",
    "10007": "maccyrillic",
    "10079": "maciceland",
    "10081": "macturkish",

    "cspc8codepage437": "cp437",
    "cspc775baltic": "cp775",
    "cspc850multilingual": "cp850",
    "cspcp852": "cp852",
    "cspc862latinhebrew": "cp862",
    "cpgr": "cp869",

    "msee": "cp1250",
    "mscyrl": "cp1251",
    "msansi": "cp1252",
    "msgreek": "cp1253",
    "msturk": "cp1254",
    "mshebr": "cp1255",
    "msarab": "cp1256",
    "winbaltrim": "cp1257",

    "cp20866": "koi8r",
    "20866": "koi8r",
    "ibm878": "koi8r",
    "cskoi8r": "koi8r",

    "cp21866": "koi8u",
    "21866": "koi8u",
    "ibm1168": "koi8u",

    "strk10482002": "rk1048",

    "tcvn5712": "tcvn",
    "tcvn57121": "tcvn",

    "gb198880": "iso646cn",
    "cn": "iso646cn",

    "csiso14jisc6220ro": "iso646jp",
    "jisc62201969ro": "iso646jp",
    "jp": "iso646jp",

    "cshproman8": "hproman8",
    "r8": "hproman8",
    "roman8": "hproman8",
    "xroman8": "hproman8",
    "ibm1051": "hproman8",

    "mac": "macintosh",
    "csmacintosh": "macintosh",
};


},{}],66:[function(require,module,exports){
module.exports=[
["8740","䏰䰲䘃䖦䕸𧉧䵷䖳𧲱䳢𧳅㮕䜶䝄䱇䱀𤊿𣘗𧍒𦺋𧃒䱗𪍑䝏䗚䲅𧱬䴇䪤䚡𦬣爥𥩔𡩣𣸆𣽡晍囻"],
["8767","綕夝𨮹㷴霴𧯯寛𡵞媤㘥𩺰嫑宷峼杮薓𩥅瑡璝㡵𡵓𣚞𦀡㻬"],
["87a1","𥣞㫵竼龗𤅡𨤍𣇪𠪊𣉞䌊蒄龖鐯䤰蘓墖靊鈘秐稲晠権袝瑌篅枂稬剏遆㓦珄𥶹瓆鿇垳䤯呌䄱𣚎堘穲𧭥讏䚮𦺈䆁𥶙箮𢒼鿈𢓁𢓉𢓌鿉蔄𣖻䂴鿊䓡𪷿拁灮鿋"],
["8840","㇀",4,"𠄌㇅𠃑𠃍㇆㇇𠃋𡿨㇈𠃊㇉㇊㇋㇌𠄎㇍㇎ĀÁǍÀĒÉĚÈŌÓǑÒ࿿Ê̄Ế࿿Ê̌ỀÊāáǎàɑēéěèīíǐìōóǒòūúǔùǖǘǚ"],
["88a1","ǜü࿿ê̄ế࿿ê̌ềêɡ⏚⏛"],
["8940","𪎩𡅅"],
["8943","攊"],
["8946","丽滝鵎釟"],
["894c","𧜵撑会伨侨兖兴农凤务动医华发变团声处备夲头学实実岚庆总斉柾栄桥济炼电纤纬纺织经统缆缷艺苏药视设询车轧轮"],
["89a1","琑糼緍楆竉刧"],
["89ab","醌碸酞肼"],
["89b0","贋胶𠧧"],
["89b5","肟黇䳍鷉鸌䰾𩷶𧀎鸊𪄳㗁"],
["89c1","溚舾甙"],
["89c5","䤑马骏龙禇𨑬𡷊𠗐𢫦两亁亀亇亿仫伷㑌侽㹈倃傈㑽㒓㒥円夅凛凼刅争剹劐匧㗇厩㕑厰㕓参吣㕭㕲㚁咓咣咴咹哐哯唘唣唨㖘唿㖥㖿嗗㗅"],
["8a40","𧶄唥"],
["8a43","𠱂𠴕𥄫喐𢳆㧬𠍁蹆𤶸𩓥䁓𨂾睺𢰸㨴䟕𨅝𦧲𤷪擝𠵼𠾴𠳕𡃴撍蹾𠺖𠰋𠽤𢲩𨉖𤓓"],
["8a64","𠵆𩩍𨃩䟴𤺧𢳂骲㩧𩗴㿭㔆𥋇𩟔𧣈𢵄鵮頕"],
["8a76","䏙𦂥撴哣𢵌𢯊𡁷㧻𡁯"],
["8aa1","𦛚𦜖𧦠擪𥁒𠱃蹨𢆡𨭌𠜱"],
["8aac","䠋𠆩㿺塳𢶍"],
["8ab2","𤗈𠓼𦂗𠽌𠶖啹䂻䎺"],
["8abb","䪴𢩦𡂝膪飵𠶜捹㧾𢝵跀嚡摼㹃"],
["8ac9","𪘁𠸉𢫏𢳉"],
["8ace","𡃈𣧂㦒㨆𨊛㕸𥹉𢃇噒𠼱𢲲𩜠㒼氽𤸻"],
["8adf","𧕴𢺋𢈈𪙛𨳍𠹺𠰴𦠜羓𡃏𢠃𢤹㗻𥇣𠺌𠾍𠺪㾓𠼰𠵇𡅏𠹌"],
["8af6","𠺫𠮩𠵈𡃀𡄽㿹𢚖搲𠾭"],
["8b40","𣏴𧘹𢯎𠵾𠵿𢱑𢱕㨘𠺘𡃇𠼮𪘲𦭐𨳒𨶙𨳊閪哌苄喹"],
["8b55","𩻃鰦骶𧝞𢷮煀腭胬尜𦕲脴㞗卟𨂽醶𠻺𠸏𠹷𠻻㗝𤷫㘉𠳖嚯𢞵𡃉𠸐𠹸𡁸𡅈𨈇𡑕𠹹𤹐𢶤婔𡀝𡀞𡃵𡃶垜𠸑"],
["8ba1","𧚔𨋍𠾵𠹻𥅾㜃𠾶𡆀𥋘𪊽𤧚𡠺𤅷𨉼墙剨㘚𥜽箲孨䠀䬬鼧䧧鰟鮍𥭴𣄽嗻㗲嚉丨夂𡯁屮靑𠂆乛亻㔾尣彑忄㣺扌攵歺氵氺灬爫丬犭𤣩罒礻糹罓𦉪㓁"],
["8bde","𦍋耂肀𦘒𦥑卝衤见𧢲讠贝钅镸长门𨸏韦页风飞饣𩠐鱼鸟黄歯龜丷𠂇阝户钢"],
["8c40","倻淾𩱳龦㷉袏𤅎灷峵䬠𥇍㕙𥴰愢𨨲辧釶熑朙玺𣊁𪄇㲋𡦀䬐磤琂冮𨜏䀉橣𪊺䈣蘏𠩯稪𩥇𨫪靕灍匤𢁾鏴盙𨧣龧矝亣俰傼丯众龨吴綋墒壐𡶶庒庙忂𢜒斋"],
["8ca1","𣏹椙橃𣱣泿"],
["8ca7","爀𤔅玌㻛𤨓嬕璹讃𥲤𥚕窓篬糃繬苸薗龩袐龪躹龫迏蕟駠鈡龬𨶹𡐿䁱䊢娚"],
["8cc9","顨杫䉶圽"],
["8cce","藖𤥻芿𧄍䲁𦵴嵻𦬕𦾾龭龮宖龯曧繛湗秊㶈䓃𣉖𢞖䎚䔶"],
["8ce6","峕𣬚諹屸㴒𣕑嵸龲煗䕘𤃬𡸣䱷㥸㑊𠆤𦱁諌侴𠈹妿腬顖𩣺弻"],
["8d40","𠮟"],
["8d42","𢇁𨥭䄂䚻𩁹㼇龳𪆵䃸㟖䛷𦱆䅼𨚲𧏿䕭㣔𥒚䕡䔛䶉䱻䵶䗪㿈𤬏㙡䓞䒽䇭崾嵈嵖㷼㠏嶤嶹㠠㠸幂庽弥徃㤈㤔㤿㥍惗愽峥㦉憷憹懏㦸戬抐拥挘㧸嚱"],
["8da1","㨃揢揻搇摚㩋擀崕嘡龟㪗斆㪽旿晓㫲暒㬢朖㭂枤栀㭘桊梄㭲㭱㭻椉楃牜楤榟榅㮼槖㯝橥橴橱檂㯬檙㯲檫檵櫔櫶殁毁毪汵沪㳋洂洆洦涁㳯涤涱渕渘温溆𨧀溻滢滚齿滨滩漤漴㵆𣽁澁澾㵪㵵熷岙㶊瀬㶑灐灔灯灿炉𠌥䏁㗱𠻘"],
["8e40","𣻗垾𦻓焾𥟠㙎榢𨯩孴穉𥣡𩓙穥穽𥦬窻窰竂竃燑𦒍䇊竚竝竪䇯咲𥰁笋筕笩𥌎𥳾箢筯莜𥮴𦱿篐萡箒箸𥴠㶭𥱥蒒篺簆簵𥳁籄粃𤢂粦晽𤕸糉糇糦籴糳糵糎"],
["8ea1","繧䔝𦹄絝𦻖璍綉綫焵綳緒𤁗𦀩緤㴓緵𡟹緥𨍭縝𦄡𦅚繮纒䌫鑬縧罀罁罇礶𦋐駡羗𦍑羣𡙡𠁨䕜𣝦䔃𨌺翺𦒉者耈耝耨耯𪂇𦳃耻耼聡𢜔䦉𦘦𣷣𦛨朥肧𨩈脇脚墰𢛶汿𦒘𤾸擧𡒊舘𡡞橓𤩥𤪕䑺舩𠬍𦩒𣵾俹𡓽蓢荢𦬊𤦧𣔰𡝳𣷸芪椛芳䇛"],
["8f40","蕋苐茚𠸖𡞴㛁𣅽𣕚艻苢茘𣺋𦶣𦬅𦮗𣗎㶿茝嗬莅䔋𦶥莬菁菓㑾𦻔橗蕚㒖𦹂𢻯葘𥯤葱㷓䓤檧葊𣲵祘蒨𦮖𦹷𦹃蓞萏莑䒠蒓蓤𥲑䉀𥳀䕃蔴嫲𦺙䔧蕳䔖枿蘖"],
["8fa1","𨘥𨘻藁𧂈蘂𡖂𧃍䕫䕪蘨㙈𡢢号𧎚虾蝱𪃸蟮𢰧螱蟚蠏噡虬桖䘏衅衆𧗠𣶹𧗤衞袜䙛袴袵揁装睷𧜏覇覊覦覩覧覼𨨥觧𧤤𧪽誜瞓釾誐𧩙竩𧬺𣾏䜓𧬸煼謌謟𥐰𥕥謿譌譍誩𤩺讐讛誯𡛟䘕衏貛𧵔𧶏貫㜥𧵓賖𧶘𧶽贒贃𡤐賛灜贑𤳉㻐起"],
["9040","趩𨀂𡀔𤦊㭼𨆼𧄌竧躭躶軃鋔輙輭𨍥𨐒辥錃𪊟𠩐辳䤪𨧞𨔽𣶻廸𣉢迹𪀔𨚼𨔁𢌥㦀𦻗逷𨔼𧪾遡𨕬𨘋邨𨜓郄𨛦邮都酧㫰醩釄粬𨤳𡺉鈎沟鉁鉢𥖹銹𨫆𣲛𨬌𥗛"],
["90a1","𠴱錬鍫𨫡𨯫炏嫃𨫢𨫥䥥鉄𨯬𨰹𨯿鍳鑛躼閅閦鐦閠濶䊹𢙺𨛘𡉼𣸮䧟氜陻隖䅬隣𦻕懚隶磵𨫠隽双䦡𦲸𠉴𦐐𩂯𩃥𤫑𡤕𣌊霱虂霶䨏䔽䖅𤫩灵孁霛靜𩇕靗孊𩇫靟鐥僐𣂷𣂼鞉鞟鞱鞾韀韒韠𥑬韮琜𩐳響韵𩐝𧥺䫑頴頳顋顦㬎𧅵㵑𠘰𤅜"],
["9140","𥜆飊颷飈飇䫿𦴧𡛓喰飡飦飬鍸餹𤨩䭲𩡗𩤅駵騌騻騐驘𥜥㛄𩂱𩯕髠髢𩬅髴䰎鬔鬭𨘀倴鬴𦦨㣃𣁽魐魀𩴾婅𡡣鮎𤉋鰂鯿鰌𩹨鷔𩾷𪆒𪆫𪃡𪄣𪇟鵾鶃𪄴鸎梈"],
["91a1","鷄𢅛𪆓𪈠𡤻𪈳鴹𪂹𪊴麐麕麞麢䴴麪麯𤍤黁㭠㧥㴝伲㞾𨰫鼂鼈䮖鐤𦶢鼗鼖鼹嚟嚊齅馸𩂋韲葿齢齩竜龎爖䮾𤥵𤦻煷𤧸𤍈𤩑玞𨯚𡣺禟𨥾𨸶鍩鏳𨩄鋬鎁鏋𨥬𤒹爗㻫睲穃烐𤑳𤏸煾𡟯炣𡢾𣖙㻇𡢅𥐯𡟸㜢𡛻𡠹㛡𡝴𡣑𥽋㜣𡛀坛𤨥𡏾𡊨"],
["9240","𡏆𡒶蔃𣚦蔃葕𤦔𧅥𣸱𥕜𣻻𧁒䓴𣛮𩦝𦼦柹㜳㰕㷧塬𡤢栐䁗𣜿𤃡𤂋𤄏𦰡哋嚞𦚱嚒𠿟𠮨𠸍鏆𨬓鎜仸儫㠙𤐶亼𠑥𠍿佋侊𥙑婨𠆫𠏋㦙𠌊𠐔㐵伩𠋀𨺳𠉵諚𠈌亘"],
["92a1","働儍侢伃𤨎𣺊佂倮偬傁俌俥偘僼兙兛兝兞湶𣖕𣸹𣺿浲𡢄𣺉冨凃𠗠䓝𠒣𠒒𠒑赺𨪜𠜎剙劤𠡳勡鍮䙺熌𤎌𠰠𤦬𡃤槑𠸝瑹㻞璙琔瑖玘䮎𤪼𤂍叐㖄爏𤃉喴𠍅响𠯆圝鉝雴鍦埝垍坿㘾壋媙𨩆𡛺𡝯𡜐娬妸銏婾嫏娒𥥆𡧳𡡡𤊕㛵洅瑃娡𥺃"],
["9340","媁𨯗𠐓鏠璌𡌃焅䥲鐈𨧻鎽㞠尞岞幞幈𡦖𡥼𣫮廍孏𡤃𡤄㜁𡢠㛝𡛾㛓脪𨩇𡶺𣑲𨦨弌弎𡤧𡞫婫𡜻孄蘔𧗽衠恾𢡠𢘫忛㺸𢖯𢖾𩂈𦽳懀𠀾𠁆𢘛憙憘恵𢲛𢴇𤛔𩅍"],
["93a1","摱𤙥𢭪㨩𢬢𣑐𩣪𢹸挷𪑛撶挱揑𤧣𢵧护𢲡搻敫楲㯴𣂎𣊭𤦉𣊫唍𣋠𡣙𩐿曎𣊉𣆳㫠䆐𥖄𨬢𥖏𡛼𥕛𥐥磮𣄃𡠪𣈴㑤𣈏𣆂𤋉暎𦴤晫䮓昰𧡰𡷫晣𣋒𣋡昞𥡲㣑𣠺𣞼㮙𣞢𣏾瓐㮖枏𤘪梶栞㯄檾㡣𣟕𤒇樳橒櫉欅𡤒攑梘橌㯗橺歗𣿀𣲚鎠鋲𨯪𨫋"],
["9440","銉𨀞𨧜鑧涥漋𤧬浧𣽿㶏渄𤀼娽渊塇洤硂焻𤌚𤉶烱牐犇犔𤞏𤜥兹𤪤𠗫瑺𣻸𣙟𤩊𤤗𥿡㼆㺱𤫟𨰣𣼵悧㻳瓌琼鎇琷䒟𦷪䕑疃㽣𤳙𤴆㽘畕癳𪗆㬙瑨𨫌𤦫𤦎㫻"],
["94a1","㷍𤩎㻿𤧅𤣳釺圲鍂𨫣𡡤僟𥈡𥇧睸𣈲眎眏睻𤚗𣞁㩞𤣰琸璛㺿𤪺𤫇䃈𤪖𦆮錇𥖁砞碍碈磒珐祙𧝁𥛣䄎禛蒖禥樭𣻺稺秴䅮𡛦䄲鈵秱𠵌𤦌𠊙𣶺𡝮㖗啫㕰㚪𠇔𠰍竢婙𢛵𥪯𥪜娍𠉛磰娪𥯆竾䇹籝籭䈑𥮳𥺼𥺦糍𤧹𡞰粎籼粮檲緜縇緓罎𦉡"],
["9540","𦅜𧭈綗𥺂䉪𦭵𠤖柖𠁎𣗏埄𦐒𦏸𤥢翝笧𠠬𥫩𥵃笌𥸎駦虅驣樜𣐿㧢𤧷𦖭騟𦖠蒀𧄧𦳑䓪脷䐂胆脉腂𦞴飃𦩂艢艥𦩑葓𦶧蘐𧈛媆䅿𡡀嬫𡢡嫤𡣘蚠蜨𣶏蠭𧐢娂"],
["95a1","衮佅袇袿裦襥襍𥚃襔𧞅𧞄𨯵𨯙𨮜𨧹㺭蒣䛵䛏㟲訽訜𩑈彍鈫𤊄旔焩烄𡡅鵭貟賩𧷜妚矃姰䍮㛔踪躧𤰉輰轊䋴汘澻𢌡䢛潹溋𡟚鯩㚵𤤯邻邗啱䤆醻鐄𨩋䁢𨫼鐧𨰝𨰻蓥訫閙閧閗閖𨴴瑅㻂𤣿𤩂𤏪㻧𣈥随𨻧𨹦𨹥㻌𤧭𤩸𣿮琒瑫㻼靁𩂰"],
["9640","桇䨝𩂓𥟟靝鍨𨦉𨰦𨬯𦎾銺嬑譩䤼珹𤈛鞛靱餸𠼦巁𨯅𤪲頟𩓚鋶𩗗釥䓀𨭐𤩧𨭤飜𨩅㼀鈪䤥萔餻饍𧬆㷽馛䭯馪驜𨭥𥣈檏騡嫾騯𩣱䮐𩥈馼䮽䮗鍽塲𡌂堢𤦸"],
["96a1","𡓨硄𢜟𣶸棅㵽鑘㤧慐𢞁𢥫愇鱏鱓鱻鰵鰐魿鯏𩸭鮟𪇵𪃾鴡䲮𤄄鸘䲰鴌𪆴𪃭𪃳𩤯鶥蒽𦸒𦿟𦮂藼䔳𦶤𦺄𦷰萠藮𦸀𣟗𦁤秢𣖜𣙀䤭𤧞㵢鏛銾鍈𠊿碹鉷鑍俤㑀遤𥕝砽硔碶硋𡝗𣇉𤥁㚚佲濚濙瀞瀞吔𤆵垻壳垊鴖埗焴㒯𤆬燫𦱀𤾗嬨𡞵𨩉"],
["9740","愌嫎娋䊼𤒈㜬䭻𨧼鎻鎸𡣖𠼝葲𦳀𡐓𤋺𢰦𤏁妔𣶷𦝁綨𦅛𦂤𤦹𤦋𨧺鋥珢㻩璴𨭣𡢟㻡𤪳櫘珳珻㻖𤨾𤪔𡟙𤩦𠎧𡐤𤧥瑈𤤖炥𤥶銄珦鍟𠓾錱𨫎𨨖鎆𨯧𥗕䤵𨪂煫"],
["97a1","𤥃𠳿嚤𠘚𠯫𠲸唂秄𡟺緾𡛂𤩐𡡒䔮鐁㜊𨫀𤦭妰𡢿𡢃𧒄媡㛢𣵛㚰鉟婹𨪁𡡢鍴㳍𠪴䪖㦊僴㵩㵌𡎜煵䋻𨈘渏𩃤䓫浗𧹏灧沯㳖𣿭𣸭渂漌㵯𠏵畑㚼㓈䚀㻚䡱姄鉮䤾轁𨰜𦯀堒埈㛖𡑒烾𤍢𤩱𢿣𡊰𢎽梹楧𡎘𣓥𧯴𣛟𨪃𣟖𣏺𤲟樚𣚭𦲷萾䓟䓎"],
["9840","𦴦𦵑𦲂𦿞漗𧄉茽𡜺菭𦲀𧁓𡟛妉媂𡞳婡婱𡤅𤇼㜭姯𡜼㛇熎鎐暚𤊥婮娫𤊓樫𣻹𧜶𤑛𤋊焝𤉙𨧡侰𦴨峂𤓎𧹍𤎽樌𤉖𡌄炦焳𤏩㶥泟勇𤩏繥姫崯㷳彜𤩝𡟟綤萦"],
["98a1","咅𣫺𣌀𠈔坾𠣕𠘙㿥𡾞𪊶瀃𩅛嵰玏糓𨩙𩐠俈翧狍猐𧫴猸猹𥛶獁獈㺩𧬘遬燵𤣲珡臶㻊県㻑沢国琙琞琟㻢㻰㻴㻺瓓㼎㽓畂畭畲疍㽼痈痜㿀癍㿗癴㿜発𤽜熈嘣覀塩䀝睃䀹条䁅㗛瞘䁪䁯属瞾矋売砘点砜䂨砹硇硑硦葈𥔵礳栃礲䄃"],
["9940","䄉禑禙辻稆込䅧窑䆲窼艹䇄竏竛䇏両筢筬筻簒簛䉠䉺类粜䊌粸䊔糭输烀𠳏総緔緐緽羮羴犟䎗耠耥笹耮耱联㷌垴炠肷胩䏭脌猪脎脒畠脔䐁㬹腖腙腚"],
["99a1","䐓堺腼膄䐥膓䐭膥埯臁臤艔䒏芦艶苊苘苿䒰荗险榊萅烵葤惣蒈䔄蒾蓡蓸蔐蔸蕒䔻蕯蕰藠䕷虲蚒蚲蛯际螋䘆䘗袮裿褤襇覑𧥧訩訸誔誴豑賔賲贜䞘塟跃䟭仮踺嗘坔蹱嗵躰䠷軎転軤軭軲辷迁迊迌逳駄䢭飠鈓䤞鈨鉘鉫銱銮銿"],
["9a40","鋣鋫鋳鋴鋽鍃鎄鎭䥅䥑麿鐗匁鐝鐭鐾䥪鑔鑹锭関䦧间阳䧥枠䨤靀䨵鞲韂噔䫤惨颹䬙飱塄餎餙冴餜餷饂饝饢䭰駅䮝騼鬏窃魩鮁鯝鯱鯴䱭鰠㝯𡯂鵉鰺"],
["9aa1","黾噐鶓鶽鷀鷼银辶鹻麬麱麽黆铜黢黱黸竈齄𠂔𠊷𠎠椚铃妬𠓗塀铁㞹𠗕𠘕𠙶𡚺块煳𠫂𠫍𠮿呪吆𠯋咞𠯻𠰻𠱓𠱥𠱼惧𠲍噺𠲵𠳝𠳭𠵯𠶲𠷈楕鰯螥𠸄𠸎𠻗𠾐𠼭𠹳尠𠾼帋𡁜𡁏𡁶朞𡁻𡂈𡂖㙇𡂿𡃓𡄯𡄻卤蒭𡋣𡍵𡌶讁𡕷𡘙𡟃𡟇乸炻𡠭𡥪"],
["9b40","𡨭𡩅𡰪𡱰𡲬𡻈拃𡻕𡼕熘桕𢁅槩㛈𢉼𢏗𢏺𢜪𢡱𢥏苽𢥧𢦓𢫕覥𢫨辠𢬎鞸𢬿顇骽𢱌"],
["9b62","𢲈𢲷𥯨𢴈𢴒𢶷𢶕𢹂𢽴𢿌𣀳𣁦𣌟𣏞徱晈暿𧩹𣕧𣗳爁𤦺矗𣘚𣜖纇𠍆墵朎"],
["9ba1","椘𣪧𧙗𥿢𣸑𣺹𧗾𢂚䣐䪸𤄙𨪚𤋮𤌍𤀻𤌴𤎖𤩅𠗊凒𠘑妟𡺨㮾𣳿𤐄𤓖垈𤙴㦛𤜯𨗨𩧉㝢𢇃譞𨭎駖𤠒𤣻𤨕爉𤫀𠱸奥𤺥𤾆𠝹軚𥀬劏圿煱𥊙𥐙𣽊𤪧喼𥑆𥑮𦭒釔㑳𥔿𧘲𥕞䜘𥕢𥕦𥟇𤤿𥡝偦㓻𣏌惞𥤃䝼𨥈𥪮𥮉𥰆𡶐垡煑澶𦄂𧰒遖𦆲𤾚譢𦐂𦑊"],
["9c40","嵛𦯷輶𦒄𡤜諪𤧶𦒈𣿯𦔒䯀𦖿𦚵𢜛鑥𥟡憕娧晉侻嚹𤔡𦛼乪𤤴陖涏𦲽㘘襷𦞙𦡮𦐑𦡞營𦣇筂𩃀𠨑𦤦鄄𦤹穅鷰𦧺騦𦨭㙟𦑩𠀡禃𦨴𦭛崬𣔙菏𦮝䛐𦲤画补𦶮墶"],
["9ca1","㜜𢖍𧁋𧇍㱔𧊀𧊅銁𢅺𧊋錰𧋦𤧐氹钟𧑐𠻸蠧裵𢤦𨑳𡞱溸𤨪𡠠㦤㚹尐秣䔿暶𩲭𩢤襃𧟌𧡘囖䃟𡘊㦡𣜯𨃨𡏅熭荦𧧝𩆨婧䲷𧂯𨦫𧧽𧨊𧬋𧵦𤅺筃祾𨀉澵𪋟樃𨌘厢𦸇鎿栶靝𨅯𨀣𦦵𡏭𣈯𨁈嶅𨰰𨂃圕頣𨥉嶫𤦈斾槕叒𤪥𣾁㰑朶𨂐𨃴𨄮𡾡𨅏"],
["9d40","𨆉𨆯𨈚𨌆𨌯𨎊㗊𨑨𨚪䣺揦𨥖砈鉕𨦸䏲𨧧䏟𨧨𨭆𨯔姸𨰉輋𨿅𩃬筑𩄐𩄼㷷𩅞𤫊运犏嚋𩓧𩗩𩖰𩖸𩜲𩣑𩥉𩥪𩧃𩨨𩬎𩵚𩶛纟𩻸𩼣䲤镇𪊓熢𪋿䶑递𪗋䶜𠲜达嗁"],
["9da1","辺𢒰边𤪓䔉繿潖檱仪㓤𨬬𧢝㜺躀𡟵𨀤𨭬𨮙𧨾𦚯㷫𧙕𣲷𥘵𥥖亚𥺁𦉘嚿𠹭踎孭𣺈𤲞揞拐𡟶𡡻攰嘭𥱊吚𥌑㷆𩶘䱽嘢嘞罉𥻘奵𣵀蝰东𠿪𠵉𣚺脗鵞贘瘻鱅癎瞹鍅吲腈苷嘥脲萘肽嗪祢噃吖𠺝㗎嘅嗱曱𨋢㘭甴嗰喺咗啲𠱁𠲖廐𥅈𠹶𢱢"],
["9e40","𠺢麫絚嗞𡁵抝靭咔賍燶酶揼掹揾啩𢭃鱲𢺳冚㓟𠶧冧呍唞唓癦踭𦢊疱肶蠄螆裇膶萜𡃁䓬猄𤜆宐茋𦢓噻𢛴𧴯𤆣𧵳𦻐𧊶酰𡇙鈈𣳼𪚩𠺬𠻹牦𡲢䝎𤿂𧿹𠿫䃺"],
["9ea1","鱝攟𢶠䣳𤟠𩵼𠿬𠸊恢𧖣𠿭"],
["9ead","𦁈𡆇熣纎鵐业丄㕷嬍沲卧㚬㧜卽㚥𤘘墚𤭮舭呋垪𥪕𠥹"],
["9ec5","㩒𢑥獴𩺬䴉鯭𣳾𩼰䱛𤾩𩖞𩿞葜𣶶𧊲𦞳𣜠挮紥𣻷𣸬㨪逈勌㹴㙺䗩𠒎癀嫰𠺶硺𧼮墧䂿噼鮋嵴癔𪐴麅䳡痹㟻愙𣃚𤏲"],
["9ef5","噝𡊩垧𤥣𩸆刴𧂮㖭汊鵼"],
["9f40","籖鬹埞𡝬屓擓𩓐𦌵𧅤蚭𠴨𦴢𤫢𠵱"],
["9f4f","凾𡼏嶎霃𡷑麁遌笟鬂峑箣扨挵髿篏鬪籾鬮籂粆鰕篼鬉鼗鰛𤤾齚啳寃俽麘俲剠㸆勑坧偖妷帒韈鶫轜呩鞴饀鞺匬愰"],
["9fa1","椬叚鰊鴂䰻陁榀傦畆𡝭駚剳"],
["9fae","酙隁酜"],
["9fb2","酑𨺗捿𦴣櫊嘑醎畺抅𠏼獏籰𥰡𣳽"],
["9fc1","𤤙盖鮝个𠳔莾衂"],
["9fc9","届槀僭坺刟巵从氱𠇲伹咜哚劚趂㗾弌㗳"],
["9fdb","歒酼龥鮗頮颴骺麨麄煺笔"],
["9fe7","毺蠘罸"],
["9feb","嘠𪙊蹷齓"],
["9ff0","跔蹏鸜踁抂𨍽踨蹵竓𤩷稾磘泪詧瘇"],
["a040","𨩚鼦泎蟖痃𪊲硓咢贌狢獱謭猂瓱賫𤪻蘯徺袠䒷"],
["a055","𡠻𦸅"],
["a058","詾𢔛"],
["a05b","惽癧髗鵄鍮鮏蟵"],
["a063","蠏賷猬霡鮰㗖犲䰇籑饊𦅙慙䰄麖慽"],
["a073","坟慯抦戹拎㩜懢厪𣏵捤栂㗒"],
["a0a1","嵗𨯂迚𨸹"],
["a0a6","僙𡵆礆匲阸𠼻䁥"],
["a0ae","矾"],
["a0b0","糂𥼚糚稭聦聣絍甅瓲覔舚朌聢𧒆聛瓰脃眤覉𦟌畓𦻑螩蟎臈螌詉貭譃眫瓸蓚㘵榲趦"],
["a0d4","覩瑨涹蟁𤀑瓧㷛煶悤憜㳑煢恷"],
["a0e2","罱𨬭牐惩䭾删㰘𣳇𥻗𧙖𥔱𡥄𡋾𩤃𦷜𧂭峁𦆭𨨏𣙷𠃮𦡆𤼎䕢嬟𦍌齐麦𦉫"],
["a3c0","␀",31,"␡"],
["c6a1","①",9,"⑴",9,"ⅰ",9,"丶丿亅亠冂冖冫勹匸卩厶夊宀巛⼳广廴彐彡攴无疒癶辵隶¨ˆヽヾゝゞ〃仝々〆〇ー［］✽ぁ",23],
["c740","す",58,"ァアィイ"],
["c7a1","ゥ",81,"А",5,"ЁЖ",4],
["c840","Л",26,"ёж",25,"⇧↸↹㇏𠃌乚𠂊刂䒑"],
["c8a1","龰冈龱𧘇"],
["c8cd","￢￤＇＂㈱№℡゛゜⺀⺄⺆⺇⺈⺊⺌⺍⺕⺜⺝⺥⺧⺪⺬⺮⺶⺼⺾⻆⻊⻌⻍⻏⻖⻗⻞⻣"],
["c8f5","ʃɐɛɔɵœøŋʊɪ"],
["f9fe","￭"],
["fa40","𠕇鋛𠗟𣿅蕌䊵珯况㙉𤥂𨧤鍄𡧛苮𣳈砼杄拟𤤳𨦪𠊠𦮳𡌅侫𢓭倈𦴩𧪄𣘀𤪱𢔓倩𠍾徤𠎀𠍇滛𠐟偽儁㑺儎顬㝃萖𤦤𠒇兠𣎴兪𠯿𢃼𠋥𢔰𠖎𣈳𡦃宂蝽𠖳𣲙冲冸"],
["faa1","鴴凉减凑㳜凓𤪦决凢卂凭菍椾𣜭彻刋刦刼劵剗劔効勅簕蕂勠蘍𦬓包𨫞啉滙𣾀𠥔𣿬匳卄𠯢泋𡜦栛珕恊㺪㣌𡛨燝䒢卭却𨚫卾卿𡖖𡘓矦厓𨪛厠厫厮玧𥝲㽙玜叁叅汉义埾叙㪫𠮏叠𣿫𢶣叶𠱷吓灹唫晗浛呭𦭓𠵴啝咏咤䞦𡜍𠻝㶴𠵍"],
["fb40","𨦼𢚘啇䳭启琗喆喩嘅𡣗𤀺䕒𤐵暳𡂴嘷曍𣊊暤暭噍噏磱囱鞇叾圀囯园𨭦㘣𡉏坆𤆥汮炋坂㚱𦱾埦𡐖堃𡑔𤍣堦𤯵塜墪㕡壠壜𡈼壻寿坃𪅐𤉸鏓㖡够梦㛃湙"],
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["fc80","鼆",4,"鼌鼏鼑鼒鼔鼕鼖鼘鼚",5,"鼡鼣",8,"鼭鼮鼰鼱"],
["fd40","鼲",4,"鼸鼺鼼鼿",4,"齅",10,"齒",38],
["fd80","齹",5,"龁龂龍",11,"龜龝龞龡",4,"郎凉秊裏隣"],
["fe40","兀嗀﨎﨏﨑﨓﨔礼﨟蘒﨡﨣﨤﨧﨨﨩"]
]

},{}],68:[function(require,module,exports){
module.exports=[
["0","\u0000",127],
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["8161","갵갶갷갺갻갽갾갿걁",9,"걌걎",5,"걕"],
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["8241","괔괕괖괗괙괚괛괝괞괟괡",7,"괪괫괮",5],
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["8341","귺귻귽귾긂",5,"긊긌긎",5,"긕",7],
["8361","긝",18,"긲긳긵긶긹긻긼"],
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["8561","꿢",5,"꿪",5,"꿲꿳꿵꿶꿷꿹",6,"뀂뀃"],
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["8841","뉯",4,"뉶",5,"뉽",6,"늆늇늈늊",4],
["8861","늏늒늓늕늖늗늛",4,"늢늤늧늨늩늫늭늮늯늱늲늳늵늶늷"],
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["8961","뎎뎏뎑뎒뎓뎕",10,"뎢",5,"뎩뎪뎫뎭"],
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["8a41","둅",10,"둒둓둕둖둗둙",6,"둢둤둦"],
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["8d41","뛃",16,"뛕",8],
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["b361","쿪",5,"쿲쿴쿶",5,"쿽쿾쿿퀁퀂퀃퀅",5],
["b381","퀋",5,"퀒",5,"퀙",19,"끝끼끽낀낄낌낍낏낑나낙낚난낟날낡낢남납낫",4,"낱낳내낵낸낼냄냅냇냈냉냐냑냔냘냠냥너넉넋넌널넒넓넘넙넛넜넝넣네넥넨넬넴넵넷넸넹녀녁년녈념녑녔녕녘녜녠노녹논놀놂놈놉놋농높놓놔놘놜놨뇌뇐뇔뇜뇝"],
["b441","퀮",5,"퀶퀷퀹퀺퀻퀽",6,"큆큈큊",5],
["b461","큑큒큓큕큖큗큙",6,"큡",10,"큮큯"],
["b481","큱큲큳큵",6,"큾큿킀킂",18,"뇟뇨뇩뇬뇰뇹뇻뇽누눅눈눋눌눔눕눗눙눠눴눼뉘뉜뉠뉨뉩뉴뉵뉼늄늅늉느늑는늘늙늚늠늡늣능늦늪늬늰늴니닉닌닐닒님닙닛닝닢다닥닦단닫",4,"닳담답닷",4,"닿대댁댄댈댐댑댓댔댕댜더덕덖던덛덜덞덟덤덥"],
["b541","킕",14,"킦킧킩킪킫킭",5],
["b561","킳킶킸킺",5,"탂탃탅탆탇탊",5,"탒탖",4],
["b581","탛탞탟탡탢탣탥",6,"탮탲",5,"탹",11,"덧덩덫덮데덱덴델뎀뎁뎃뎄뎅뎌뎐뎔뎠뎡뎨뎬도독돈돋돌돎돐돔돕돗동돛돝돠돤돨돼됐되된될됨됩됫됴두둑둔둘둠둡둣둥둬뒀뒈뒝뒤뒨뒬뒵뒷뒹듀듄듈듐듕드득든듣들듦듬듭듯등듸디딕딘딛딜딤딥딧딨딩딪따딱딴딸"],
["b641","턅",7,"턎",17],
["b661","턠",15,"턲턳턵턶턷턹턻턼턽턾"],
["b681","턿텂텆",5,"텎텏텑텒텓텕",6,"텞텠텢",5,"텩텪텫텭땀땁땃땄땅땋때땍땐땔땜땝땟땠땡떠떡떤떨떪떫떰떱떳떴떵떻떼떽뗀뗄뗌뗍뗏뗐뗑뗘뗬또똑똔똘똥똬똴뙈뙤뙨뚜뚝뚠뚤뚫뚬뚱뛔뛰뛴뛸뜀뜁뜅뜨뜩뜬뜯뜰뜸뜹뜻띄띈띌띔띕띠띤띨띰띱띳띵라락란랄람랍랏랐랑랒랖랗"],
["b741","텮",13,"텽",6,"톅톆톇톉톊"],
["b761","톋",20,"톢톣톥톦톧"],
["b781","톩",6,"톲톴톶톷톸톹톻톽톾톿퇁",14,"래랙랜랠램랩랫랬랭랴략랸럇량러럭런럴럼럽럿렀렁렇레렉렌렐렘렙렛렝려력련렬렴렵렷렸령례롄롑롓로록론롤롬롭롯롱롸롼뢍뢨뢰뢴뢸룀룁룃룅료룐룔룝룟룡루룩룬룰룸룹룻룽뤄뤘뤠뤼뤽륀륄륌륏륑류륙륜률륨륩"],
["b841","퇐",7,"퇙",17],
["b861","퇫",8,"퇵퇶퇷퇹",13],
["b881","툈툊",5,"툑",24,"륫륭르륵른를름릅릇릉릊릍릎리릭린릴림립릿링마막만많",4,"맘맙맛망맞맡맣매맥맨맬맴맵맷맸맹맺먀먁먈먕머먹먼멀멂멈멉멋멍멎멓메멕멘멜멤멥멧멨멩며멱면멸몃몄명몇몌모목몫몬몰몲몸몹못몽뫄뫈뫘뫙뫼"],
["b941","툪툫툮툯툱툲툳툵",6,"툾퉀퉂",5,"퉉퉊퉋퉌"],
["b961","퉍",14,"퉝",6,"퉥퉦퉧퉨"],
["b981","퉩",22,"튂튃튅튆튇튉튊튋튌묀묄묍묏묑묘묜묠묩묫무묵묶문묻물묽묾뭄뭅뭇뭉뭍뭏뭐뭔뭘뭡뭣뭬뮈뮌뮐뮤뮨뮬뮴뮷므믄믈믐믓미믹민믿밀밂밈밉밋밌밍및밑바",4,"받",4,"밤밥밧방밭배백밴밸뱀뱁뱃뱄뱅뱉뱌뱍뱐뱝버벅번벋벌벎범법벗"],
["ba41","튍튎튏튒튓튔튖",5,"튝튞튟튡튢튣튥",6,"튭"],
["ba61","튮튯튰튲",5,"튺튻튽튾틁틃",4,"틊틌",5],
["ba81","틒틓틕틖틗틙틚틛틝",6,"틦",9,"틲틳틵틶틷틹틺벙벚베벡벤벧벨벰벱벳벴벵벼벽변별볍볏볐병볕볘볜보복볶본볼봄봅봇봉봐봔봤봬뵀뵈뵉뵌뵐뵘뵙뵤뵨부북분붇불붉붊붐붑붓붕붙붚붜붤붰붸뷔뷕뷘뷜뷩뷰뷴뷸븀븃븅브븍븐블븜븝븟비빅빈빌빎빔빕빗빙빚빛빠빡빤"],
["bb41","틻",4,"팂팄팆",5,"팏팑팒팓팕팗",4,"팞팢팣"],
["bb61","팤팦팧팪팫팭팮팯팱",6,"팺팾",5,"퍆퍇퍈퍉"],
["bb81","퍊",31,"빨빪빰빱빳빴빵빻빼빽뺀뺄뺌뺍뺏뺐뺑뺘뺙뺨뻐뻑뻔뻗뻘뻠뻣뻤뻥뻬뼁뼈뼉뼘뼙뼛뼜뼝뽀뽁뽄뽈뽐뽑뽕뾔뾰뿅뿌뿍뿐뿔뿜뿟뿡쀼쁑쁘쁜쁠쁨쁩삐삑삔삘삠삡삣삥사삭삯산삳살삵삶삼삽삿샀상샅새색샌샐샘샙샛샜생샤"],
["bc41","퍪",17,"퍾퍿펁펂펃펅펆펇"],
["bc61","펈펉펊펋펎펒",5,"펚펛펝펞펟펡",6,"펪펬펮"],
["bc81","펯",4,"펵펶펷펹펺펻펽",6,"폆폇폊",5,"폑",5,"샥샨샬샴샵샷샹섀섄섈섐섕서",4,"섣설섦섧섬섭섯섰성섶세섹센셀셈셉셋셌셍셔셕션셜셤셥셧셨셩셰셴셸솅소속솎손솔솖솜솝솟송솥솨솩솬솰솽쇄쇈쇌쇔쇗쇘쇠쇤쇨쇰쇱쇳쇼쇽숀숄숌숍숏숑수숙순숟술숨숩숫숭"],
["bd41","폗폙",7,"폢폤",7,"폮폯폱폲폳폵폶폷"],
["bd61","폸폹폺폻폾퐀퐂",5,"퐉",13],
["bd81","퐗",5,"퐞",25,"숯숱숲숴쉈쉐쉑쉔쉘쉠쉥쉬쉭쉰쉴쉼쉽쉿슁슈슉슐슘슛슝스슥슨슬슭슴습슷승시식신싣실싫심십싯싱싶싸싹싻싼쌀쌈쌉쌌쌍쌓쌔쌕쌘쌜쌤쌥쌨쌩썅써썩썬썰썲썸썹썼썽쎄쎈쎌쏀쏘쏙쏜쏟쏠쏢쏨쏩쏭쏴쏵쏸쐈쐐쐤쐬쐰"],
["be41","퐸",7,"푁푂푃푅",14],
["be61","푔",7,"푝푞푟푡푢푣푥",7,"푮푰푱푲"],
["be81","푳",4,"푺푻푽푾풁풃",4,"풊풌풎",5,"풕",8,"쐴쐼쐽쑈쑤쑥쑨쑬쑴쑵쑹쒀쒔쒜쒸쒼쓩쓰쓱쓴쓸쓺쓿씀씁씌씐씔씜씨씩씬씰씸씹씻씽아악안앉않알앍앎앓암압앗았앙앝앞애액앤앨앰앱앳앴앵야약얀얄얇얌얍얏양얕얗얘얜얠얩어억언얹얻얼얽얾엄",6,"엌엎"],
["bf41","풞",10,"풪",14],
["bf61","풹",18,"퓍퓎퓏퓑퓒퓓퓕"],
["bf81","퓖",5,"퓝퓞퓠",7,"퓩퓪퓫퓭퓮퓯퓱",6,"퓹퓺퓼에엑엔엘엠엡엣엥여역엮연열엶엷염",5,"옅옆옇예옌옐옘옙옛옜오옥온올옭옮옰옳옴옵옷옹옻와왁완왈왐왑왓왔왕왜왝왠왬왯왱외왹왼욀욈욉욋욍요욕욘욜욤욥욧용우욱운울욹욺움웁웃웅워웍원월웜웝웠웡웨"],
["c041","퓾",5,"픅픆픇픉픊픋픍",6,"픖픘",5],
["c061","픞",25],
["c081","픸픹픺픻픾픿핁핂핃핅",6,"핎핐핒",5,"핚핛핝핞핟핡핢핣웩웬웰웸웹웽위윅윈윌윔윕윗윙유육윤율윰윱윳융윷으윽은을읊음읍읏응",7,"읜읠읨읫이익인일읽읾잃임입잇있잉잊잎자작잔잖잗잘잚잠잡잣잤장잦재잭잰잴잼잽잿쟀쟁쟈쟉쟌쟎쟐쟘쟝쟤쟨쟬저적전절젊"],
["c141","핤핦핧핪핬핮",5,"핶핷핹핺핻핽",6,"햆햊햋"],
["c161","햌햍햎햏햑",19,"햦햧"],
["c181","햨",31,"점접젓정젖제젝젠젤젬젭젯젱져젼졀졈졉졌졍졔조족존졸졺좀좁좃종좆좇좋좌좍좔좝좟좡좨좼좽죄죈죌죔죕죗죙죠죡죤죵주죽준줄줅줆줌줍줏중줘줬줴쥐쥑쥔쥘쥠쥡쥣쥬쥰쥴쥼즈즉즌즐즘즙즛증지직진짇질짊짐집짓"],
["c241","헊헋헍헎헏헑헓",4,"헚헜헞",5,"헦헧헩헪헫헭헮"],
["c261","헯",4,"헶헸헺",5,"혂혃혅혆혇혉",6,"혒"],
["c281","혖",5,"혝혞혟혡혢혣혥",7,"혮",9,"혺혻징짖짙짚짜짝짠짢짤짧짬짭짯짰짱째짹짼쨀쨈쨉쨋쨌쨍쨔쨘쨩쩌쩍쩐쩔쩜쩝쩟쩠쩡쩨쩽쪄쪘쪼쪽쫀쫄쫌쫍쫏쫑쫓쫘쫙쫠쫬쫴쬈쬐쬔쬘쬠쬡쭁쭈쭉쭌쭐쭘쭙쭝쭤쭸쭹쮜쮸쯔쯤쯧쯩찌찍찐찔찜찝찡찢찧차착찬찮찰참찹찻"],
["c341","혽혾혿홁홂홃홄홆홇홊홌홎홏홐홒홓홖홗홙홚홛홝",4],
["c361","홢",4,"홨홪",5,"홲홳홵",11],
["c381","횁횂횄횆",5,"횎횏횑횒횓횕",7,"횞횠횢",5,"횩횪찼창찾채책챈챌챔챕챗챘챙챠챤챦챨챰챵처척천철첨첩첫첬청체첵첸첼쳄쳅쳇쳉쳐쳔쳤쳬쳰촁초촉촌촐촘촙촛총촤촨촬촹최쵠쵤쵬쵭쵯쵱쵸춈추축춘출춤춥춧충춰췄췌췐취췬췰췸췹췻췽츄츈츌츔츙츠측츤츨츰츱츳층"],
["c441","횫횭횮횯횱",7,"횺횼",7,"훆훇훉훊훋"],
["c461","훍훎훏훐훒훓훕훖훘훚",5,"훡훢훣훥훦훧훩",4],
["c481","훮훯훱훲훳훴훶",5,"훾훿휁휂휃휅",11,"휒휓휔치칙친칟칠칡침칩칫칭카칵칸칼캄캅캇캉캐캑캔캘캠캡캣캤캥캬캭컁커컥컨컫컬컴컵컷컸컹케켁켄켈켐켑켓켕켜켠켤켬켭켯켰켱켸코콕콘콜콤콥콧콩콰콱콴콸쾀쾅쾌쾡쾨쾰쿄쿠쿡쿤쿨쿰쿱쿳쿵쿼퀀퀄퀑퀘퀭퀴퀵퀸퀼"],
["c541","휕휖휗휚휛휝휞휟휡",6,"휪휬휮",5,"휶휷휹"],
["c561","휺휻휽",6,"흅흆흈흊",5,"흒흓흕흚",4],
["c581","흟흢흤흦흧흨흪흫흭흮흯흱흲흳흵",6,"흾흿힀힂",5,"힊힋큄큅큇큉큐큔큘큠크큭큰클큼큽킁키킥킨킬킴킵킷킹타탁탄탈탉탐탑탓탔탕태택탠탤탬탭탯탰탱탸턍터턱턴털턺텀텁텃텄텅테텍텐텔템텝텟텡텨텬텼톄톈토톡톤톨톰톱톳통톺톼퇀퇘퇴퇸툇툉툐투툭툰툴툼툽툿퉁퉈퉜"],
["c641","힍힎힏힑",6,"힚힜힞",5],
["c6a1","퉤튀튁튄튈튐튑튕튜튠튤튬튱트특튼튿틀틂틈틉틋틔틘틜틤틥티틱틴틸팀팁팃팅파팍팎판팔팖팜팝팟팠팡팥패팩팬팰팸팹팻팼팽퍄퍅퍼퍽펀펄펌펍펏펐펑페펙펜펠펨펩펫펭펴편펼폄폅폈평폐폘폡폣포폭폰폴폼폽폿퐁"],
["c7a1","퐈퐝푀푄표푠푤푭푯푸푹푼푿풀풂품풉풋풍풔풩퓌퓐퓔퓜퓟퓨퓬퓰퓸퓻퓽프픈플픔픕픗피픽핀필핌핍핏핑하학한할핥함합핫항해핵핸핼햄햅햇했행햐향허헉헌헐헒험헙헛헝헤헥헨헬헴헵헷헹혀혁현혈혐협혓혔형혜혠"],
["c8a1","혤혭호혹혼홀홅홈홉홋홍홑화확환활홧황홰홱홴횃횅회획횐횔횝횟횡효횬횰횹횻후훅훈훌훑훔훗훙훠훤훨훰훵훼훽휀휄휑휘휙휜휠휨휩휫휭휴휵휸휼흄흇흉흐흑흔흖흗흘흙흠흡흣흥흩희흰흴흼흽힁히힉힌힐힘힙힛힝"],
["caa1","伽佳假價加可呵哥嘉嫁家暇架枷柯歌珂痂稼苛茄街袈訶賈跏軻迦駕刻却各恪慤殼珏脚覺角閣侃刊墾奸姦干幹懇揀杆柬桿澗癎看磵稈竿簡肝艮艱諫間乫喝曷渴碣竭葛褐蝎鞨勘坎堪嵌感憾戡敢柑橄減甘疳監瞰紺邯鑑鑒龕"],
["cba1","匣岬甲胛鉀閘剛堈姜岡崗康强彊慷江畺疆糠絳綱羌腔舡薑襁講鋼降鱇介价個凱塏愷愾慨改槪漑疥皆盖箇芥蓋豈鎧開喀客坑更粳羹醵倨去居巨拒据據擧渠炬祛距踞車遽鉅鋸乾件健巾建愆楗腱虔蹇鍵騫乞傑杰桀儉劍劒檢"],
["cca1","瞼鈐黔劫怯迲偈憩揭擊格檄激膈覡隔堅牽犬甄絹繭肩見譴遣鵑抉決潔結缺訣兼慊箝謙鉗鎌京俓倞傾儆勁勍卿坰境庚徑慶憬擎敬景暻更梗涇炅烱璟璥瓊痙硬磬竟競絅經耕耿脛莖警輕逕鏡頃頸驚鯨係啓堺契季屆悸戒桂械"],
["cda1","棨溪界癸磎稽系繫繼計誡谿階鷄古叩告呱固姑孤尻庫拷攷故敲暠枯槁沽痼皐睾稿羔考股膏苦苽菰藁蠱袴誥賈辜錮雇顧高鼓哭斛曲梏穀谷鵠困坤崑昆梱棍滾琨袞鯤汨滑骨供公共功孔工恐恭拱控攻珙空蚣貢鞏串寡戈果瓜"],
["cea1","科菓誇課跨過鍋顆廓槨藿郭串冠官寬慣棺款灌琯瓘管罐菅觀貫關館刮恝括适侊光匡壙廣曠洸炚狂珖筐胱鑛卦掛罫乖傀塊壞怪愧拐槐魁宏紘肱轟交僑咬喬嬌嶠巧攪敎校橋狡皎矯絞翹膠蕎蛟較轎郊餃驕鮫丘久九仇俱具勾"],
["cfa1","區口句咎嘔坵垢寇嶇廐懼拘救枸柩構歐毆毬求溝灸狗玖球瞿矩究絿耉臼舅舊苟衢謳購軀逑邱鉤銶駒驅鳩鷗龜國局菊鞠鞫麴君窘群裙軍郡堀屈掘窟宮弓穹窮芎躬倦券勸卷圈拳捲權淃眷厥獗蕨蹶闕机櫃潰詭軌饋句晷歸貴"],
["d0a1","鬼龜叫圭奎揆槻珪硅窺竅糾葵規赳逵閨勻均畇筠菌鈞龜橘克剋劇戟棘極隙僅劤勤懃斤根槿瑾筋芹菫覲謹近饉契今妗擒昑檎琴禁禽芩衾衿襟金錦伋及急扱汲級給亘兢矜肯企伎其冀嗜器圻基埼夔奇妓寄岐崎己幾忌技旗旣"],
["d1a1","朞期杞棋棄機欺氣汽沂淇玘琦琪璂璣畸畿碁磯祁祇祈祺箕紀綺羈耆耭肌記譏豈起錡錤飢饑騎騏驥麒緊佶吉拮桔金喫儺喇奈娜懦懶拏拿癩",5,"那樂",4,"諾酪駱亂卵暖欄煖爛蘭難鸞捏捺南嵐枏楠湳濫男藍襤拉"],
["d2a1","納臘蠟衲囊娘廊",4,"乃來內奈柰耐冷女年撚秊念恬拈捻寧寗努勞奴弩怒擄櫓爐瑙盧",5,"駑魯",10,"濃籠聾膿農惱牢磊腦賂雷尿壘",7,"嫩訥杻紐勒",5,"能菱陵尼泥匿溺多茶"],
["d3a1","丹亶但單團壇彖斷旦檀段湍短端簞緞蛋袒鄲鍛撻澾獺疸達啖坍憺擔曇淡湛潭澹痰聃膽蕁覃談譚錟沓畓答踏遝唐堂塘幢戇撞棠當糖螳黨代垈坮大對岱帶待戴擡玳臺袋貸隊黛宅德悳倒刀到圖堵塗導屠島嶋度徒悼挑掉搗桃"],
["d4a1","棹櫂淘渡滔濤燾盜睹禱稻萄覩賭跳蹈逃途道都鍍陶韜毒瀆牘犢獨督禿篤纛讀墩惇敦旽暾沌焞燉豚頓乭突仝冬凍動同憧東桐棟洞潼疼瞳童胴董銅兜斗杜枓痘竇荳讀豆逗頭屯臀芚遁遯鈍得嶝橙燈登等藤謄鄧騰喇懶拏癩羅"],
["d5a1","蘿螺裸邏樂洛烙珞絡落諾酪駱丹亂卵欄欒瀾爛蘭鸞剌辣嵐擥攬欖濫籃纜藍襤覽拉臘蠟廊朗浪狼琅瑯螂郞來崍徠萊冷掠略亮倆兩凉梁樑粮粱糧良諒輛量侶儷勵呂廬慮戾旅櫚濾礪藜蠣閭驢驪麗黎力曆歷瀝礫轢靂憐戀攣漣"],
["d6a1","煉璉練聯蓮輦連鍊冽列劣洌烈裂廉斂殮濂簾獵令伶囹寧岺嶺怜玲笭羚翎聆逞鈴零靈領齡例澧禮醴隷勞怒撈擄櫓潞瀘爐盧老蘆虜路輅露魯鷺鹵碌祿綠菉錄鹿麓論壟弄朧瀧瓏籠聾儡瀨牢磊賂賚賴雷了僚寮廖料燎療瞭聊蓼"],
["d7a1","遼鬧龍壘婁屢樓淚漏瘻累縷蔞褸鏤陋劉旒柳榴流溜瀏琉瑠留瘤硫謬類六戮陸侖倫崙淪綸輪律慄栗率隆勒肋凜凌楞稜綾菱陵俚利厘吏唎履悧李梨浬犁狸理璃異痢籬罹羸莉裏裡里釐離鯉吝潾燐璘藺躪隣鱗麟林淋琳臨霖砬"],
["d8a1","立笠粒摩瑪痲碼磨馬魔麻寞幕漠膜莫邈万卍娩巒彎慢挽晩曼滿漫灣瞞萬蔓蠻輓饅鰻唜抹末沫茉襪靺亡妄忘忙望網罔芒茫莽輞邙埋妹媒寐昧枚梅每煤罵買賣邁魅脈貊陌驀麥孟氓猛盲盟萌冪覓免冕勉棉沔眄眠綿緬面麵滅"],
["d9a1","蔑冥名命明暝椧溟皿瞑茗蓂螟酩銘鳴袂侮冒募姆帽慕摸摹暮某模母毛牟牡瑁眸矛耗芼茅謀謨貌木沐牧目睦穆鶩歿沒夢朦蒙卯墓妙廟描昴杳渺猫竗苗錨務巫憮懋戊拇撫无楙武毋無珷畝繆舞茂蕪誣貿霧鵡墨默們刎吻問文"],
["daa1","汶紊紋聞蚊門雯勿沕物味媚尾嵋彌微未梶楣渼湄眉米美薇謎迷靡黴岷悶愍憫敏旻旼民泯玟珉緡閔密蜜謐剝博拍搏撲朴樸泊珀璞箔粕縛膊舶薄迫雹駁伴半反叛拌搬攀斑槃泮潘班畔瘢盤盼磐磻礬絆般蟠返頒飯勃拔撥渤潑"],
["dba1","發跋醱鉢髮魃倣傍坊妨尨幇彷房放方旁昉枋榜滂磅紡肪膀舫芳蒡蚌訪謗邦防龐倍俳北培徘拜排杯湃焙盃背胚裴裵褙賠輩配陪伯佰帛柏栢白百魄幡樊煩燔番磻繁蕃藩飜伐筏罰閥凡帆梵氾汎泛犯範范法琺僻劈壁擘檗璧癖"],
["dca1","碧蘗闢霹便卞弁變辨辯邊別瞥鱉鼈丙倂兵屛幷昞昺柄棅炳甁病秉竝輧餠騈保堡報寶普步洑湺潽珤甫菩補褓譜輔伏僕匐卜宓復服福腹茯蔔複覆輹輻馥鰒本乶俸奉封峯峰捧棒烽熢琫縫蓬蜂逢鋒鳳不付俯傅剖副否咐埠夫婦"],
["dda1","孚孵富府復扶敷斧浮溥父符簿缶腐腑膚艀芙莩訃負賦賻赴趺部釜阜附駙鳧北分吩噴墳奔奮忿憤扮昐汾焚盆粉糞紛芬賁雰不佛弗彿拂崩朋棚硼繃鵬丕備匕匪卑妃婢庇悲憊扉批斐枇榧比毖毗毘沸泌琵痺砒碑秕秘粃緋翡肥"],
["dea1","脾臂菲蜚裨誹譬費鄙非飛鼻嚬嬪彬斌檳殯浜濱瀕牝玭貧賓頻憑氷聘騁乍事些仕伺似使俟僿史司唆嗣四士奢娑寫寺射巳師徙思捨斜斯柶査梭死沙泗渣瀉獅砂社祀祠私篩紗絲肆舍莎蓑蛇裟詐詞謝賜赦辭邪飼駟麝削數朔索"],
["dfa1","傘刪山散汕珊産疝算蒜酸霰乷撒殺煞薩三參杉森渗芟蔘衫揷澁鈒颯上傷像償商喪嘗孀尙峠常床庠廂想桑橡湘爽牀狀相祥箱翔裳觴詳象賞霜塞璽賽嗇塞穡索色牲生甥省笙墅壻嶼序庶徐恕抒捿敍暑曙書栖棲犀瑞筮絮緖署"],
["e0a1","胥舒薯西誓逝鋤黍鼠夕奭席惜昔晳析汐淅潟石碩蓆釋錫仙僊先善嬋宣扇敾旋渲煽琁瑄璇璿癬禪線繕羨腺膳船蘚蟬詵跣選銑鐥饍鮮卨屑楔泄洩渫舌薛褻設說雪齧剡暹殲纖蟾贍閃陝攝涉燮葉城姓宬性惺成星晟猩珹盛省筬"],
["e1a1","聖聲腥誠醒世勢歲洗稅笹細說貰召嘯塑宵小少巢所掃搔昭梳沼消溯瀟炤燒甦疏疎瘙笑篠簫素紹蔬蕭蘇訴逍遡邵銷韶騷俗屬束涑粟續謖贖速孫巽損蓀遜飡率宋悚松淞訟誦送頌刷殺灑碎鎖衰釗修受嗽囚垂壽嫂守岫峀帥愁"],
["e2a1","戍手授搜收數樹殊水洙漱燧狩獸琇璲瘦睡秀穗竪粹綏綬繡羞脩茱蒐蓚藪袖誰讐輸遂邃酬銖銹隋隧隨雖需須首髓鬚叔塾夙孰宿淑潚熟琡璹肅菽巡徇循恂旬栒楯橓殉洵淳珣盾瞬筍純脣舜荀蓴蕣詢諄醇錞順馴戌術述鉥崇崧"],
["e3a1","嵩瑟膝蝨濕拾習褶襲丞乘僧勝升承昇繩蠅陞侍匙嘶始媤尸屎屍市弑恃施是時枾柴猜矢示翅蒔蓍視試詩諡豕豺埴寔式息拭植殖湜熄篒蝕識軾食飾伸侁信呻娠宸愼新晨燼申神紳腎臣莘薪藎蜃訊身辛辰迅失室實悉審尋心沁"],
["e4a1","沈深瀋甚芯諶什十拾雙氏亞俄兒啞娥峨我牙芽莪蛾衙訝阿雅餓鴉鵝堊岳嶽幄惡愕握樂渥鄂鍔顎鰐齷安岸按晏案眼雁鞍顔鮟斡謁軋閼唵岩巖庵暗癌菴闇壓押狎鴨仰央怏昻殃秧鴦厓哀埃崖愛曖涯碍艾隘靄厄扼掖液縊腋額"],
["e5a1","櫻罌鶯鸚也倻冶夜惹揶椰爺耶若野弱掠略約若葯蒻藥躍亮佯兩凉壤孃恙揚攘敭暘梁楊樣洋瀁煬痒瘍禳穰糧羊良襄諒讓釀陽量養圄御於漁瘀禦語馭魚齬億憶抑檍臆偃堰彦焉言諺孼蘖俺儼嚴奄掩淹嶪業円予余勵呂女如廬"],
["e6a1","旅歟汝濾璵礖礪與艅茹輿轝閭餘驪麗黎亦力域役易曆歷疫繹譯轢逆驛嚥堧姸娟宴年延憐戀捐挻撚椽沇沿涎涓淵演漣烟然煙煉燃燕璉硏硯秊筵緣練縯聯衍軟輦蓮連鉛鍊鳶列劣咽悅涅烈熱裂說閱厭廉念捻染殮炎焰琰艶苒"],
["e7a1","簾閻髥鹽曄獵燁葉令囹塋寧嶺嶸影怜映暎楹榮永泳渶潁濚瀛瀯煐營獰玲瑛瑩瓔盈穎纓羚聆英詠迎鈴鍈零霙靈領乂倪例刈叡曳汭濊猊睿穢芮藝蘂禮裔詣譽豫醴銳隸霓預五伍俉傲午吾吳嗚塢墺奧娛寤悟惡懊敖旿晤梧汚澳"],
["e8a1","烏熬獒筽蜈誤鰲鼇屋沃獄玉鈺溫瑥瘟穩縕蘊兀壅擁瓮甕癰翁邕雍饔渦瓦窩窪臥蛙蝸訛婉完宛梡椀浣玩琓琬碗緩翫脘腕莞豌阮頑曰往旺枉汪王倭娃歪矮外嵬巍猥畏了僚僥凹堯夭妖姚寥寮尿嶢拗搖撓擾料曜樂橈燎燿瑤療"],
["e9a1","窈窯繇繞耀腰蓼蟯要謠遙遼邀饒慾欲浴縟褥辱俑傭冗勇埇墉容庸慂榕涌湧溶熔瑢用甬聳茸蓉踊鎔鏞龍于佑偶優又友右宇寓尤愚憂旴牛玗瑀盂祐禑禹紆羽芋藕虞迂遇郵釪隅雨雩勖彧旭昱栯煜稶郁頊云暈橒殞澐熉耘芸蕓"],
["eaa1","運隕雲韻蔚鬱亐熊雄元原員圓園垣媛嫄寃怨愿援沅洹湲源爰猿瑗苑袁轅遠阮院願鴛月越鉞位偉僞危圍委威尉慰暐渭爲瑋緯胃萎葦蔿蝟衛褘謂違韋魏乳侑儒兪劉唯喩孺宥幼幽庾悠惟愈愉揄攸有杻柔柚柳楡楢油洧流游溜"],
["eba1","濡猶猷琉瑜由留癒硫紐維臾萸裕誘諛諭踰蹂遊逾遺酉釉鍮類六堉戮毓肉育陸倫允奫尹崙淪潤玧胤贇輪鈗閏律慄栗率聿戎瀜絨融隆垠恩慇殷誾銀隱乙吟淫蔭陰音飮揖泣邑凝應膺鷹依倚儀宜意懿擬椅毅疑矣義艤薏蟻衣誼"],
["eca1","議醫二以伊利吏夷姨履已弛彛怡易李梨泥爾珥理異痍痢移罹而耳肄苡荑裏裡貽貳邇里離飴餌匿溺瀷益翊翌翼謚人仁刃印吝咽因姻寅引忍湮燐璘絪茵藺蚓認隣靭靷鱗麟一佚佾壹日溢逸鎰馹任壬妊姙恁林淋稔臨荏賃入卄"],
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["aea1","恣恥恐恕恭恩息悄悟悚悍悔悌悅悖扇拳挈拿捎挾振捕捂捆捏捉挺捐挽挪挫挨捍捌效敉料旁旅時晉晏晃晒晌晅晁書朔朕朗校核案框桓根桂桔栩梳栗桌桑栽柴桐桀格桃株桅栓栘桁殊殉殷氣氧氨氦氤泰浪涕消涇浦浸海浙涓"],
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["b040","虔蚊蚪蚓蚤蚩蚌蚣蚜衰衷袁袂衽衹記訐討訌訕訊託訓訖訏訑豈豺豹財貢起躬軒軔軏辱送逆迷退迺迴逃追逅迸邕郡郝郢酒配酌釘針釗釜釙閃院陣陡"],
["b0a1","陛陝除陘陞隻飢馬骨高鬥鬲鬼乾偺偽停假偃偌做偉健偶偎偕偵側偷偏倏偯偭兜冕凰剪副勒務勘動匐匏匙匿區匾參曼商啪啦啄啞啡啃啊唱啖問啕唯啤唸售啜唬啣唳啁啗圈國圉域堅堊堆埠埤基堂堵執培夠奢娶婁婉婦婪婀"],
["b140","娼婢婚婆婊孰寇寅寄寂宿密尉專將屠屜屝崇崆崎崛崖崢崑崩崔崙崤崧崗巢常帶帳帷康庸庶庵庾張強彗彬彩彫得徙從徘御徠徜恿患悉悠您惋悴惦悽"],
["b1a1","情悻悵惜悼惘惕惆惟悸惚惇戚戛扈掠控捲掖探接捷捧掘措捱掩掉掃掛捫推掄授掙採掬排掏掀捻捩捨捺敝敖救教敗啟敏敘敕敔斜斛斬族旋旌旎晝晚晤晨晦晞曹勗望梁梯梢梓梵桿桶梱梧梗械梃棄梭梆梅梔條梨梟梡梂欲殺"],
["b240","毫毬氫涎涼淳淙液淡淌淤添淺清淇淋涯淑涮淞淹涸混淵淅淒渚涵淚淫淘淪深淮淨淆淄涪淬涿淦烹焉焊烽烯爽牽犁猜猛猖猓猙率琅琊球理現琍瓠瓶"],
["b2a1","瓷甜產略畦畢異疏痔痕疵痊痍皎盔盒盛眷眾眼眶眸眺硫硃硎祥票祭移窒窕笠笨笛第符笙笞笮粒粗粕絆絃統紮紹紼絀細紳組累終紲紱缽羞羚翌翎習耜聊聆脯脖脣脫脩脰脤舂舵舷舶船莎莞莘荸莢莖莽莫莒莊莓莉莠荷荻荼"],
["b340","莆莧處彪蛇蛀蚶蛄蚵蛆蛋蚱蚯蛉術袞袈被袒袖袍袋覓規訪訝訣訥許設訟訛訢豉豚販責貫貨貪貧赧赦趾趺軛軟這逍通逗連速逝逐逕逞造透逢逖逛途"],
["b3a1","部郭都酗野釵釦釣釧釭釩閉陪陵陳陸陰陴陶陷陬雀雪雩章竟頂頃魚鳥鹵鹿麥麻傢傍傅備傑傀傖傘傚最凱割剴創剩勞勝勛博厥啻喀喧啼喊喝喘喂喜喪喔喇喋喃喳單喟唾喲喚喻喬喱啾喉喫喙圍堯堪場堤堰報堡堝堠壹壺奠"],
["b440","婷媚婿媒媛媧孳孱寒富寓寐尊尋就嵌嵐崴嵇巽幅帽幀幃幾廊廁廂廄弼彭復循徨惑惡悲悶惠愜愣惺愕惰惻惴慨惱愎惶愉愀愒戟扉掣掌描揀揩揉揆揍"],
["b4a1","插揣提握揖揭揮捶援揪換摒揚揹敞敦敢散斑斐斯普晰晴晶景暑智晾晷曾替期朝棺棕棠棘棗椅棟棵森棧棹棒棲棣棋棍植椒椎棉棚楮棻款欺欽殘殖殼毯氮氯氬港游湔渡渲湧湊渠渥渣減湛湘渤湖湮渭渦湯渴湍渺測湃渝渾滋"],
["b540","溉渙湎湣湄湲湩湟焙焚焦焰無然煮焜牌犄犀猶猥猴猩琺琪琳琢琥琵琶琴琯琛琦琨甥甦畫番痢痛痣痙痘痞痠登發皖皓皴盜睏短硝硬硯稍稈程稅稀窘"],
["b5a1","窗窖童竣等策筆筐筒答筍筋筏筑粟粥絞結絨絕紫絮絲絡給絢絰絳善翔翕耋聒肅腕腔腋腑腎脹腆脾腌腓腴舒舜菩萃菸萍菠菅萋菁華菱菴著萊菰萌菌菽菲菊萸萎萄菜萇菔菟虛蛟蛙蛭蛔蛛蛤蛐蛞街裁裂袱覃視註詠評詞証詁"],
["b640","詔詛詐詆訴診訶詖象貂貯貼貳貽賁費賀貴買貶貿貸越超趁跎距跋跚跑跌跛跆軻軸軼辜逮逵週逸進逶鄂郵鄉郾酣酥量鈔鈕鈣鈉鈞鈍鈐鈇鈑閔閏開閑"],
["b6a1","間閒閎隊階隋陽隅隆隍陲隄雁雅雄集雇雯雲韌項順須飧飪飯飩飲飭馮馭黃黍黑亂傭債傲傳僅傾催傷傻傯僇剿剷剽募勦勤勢勣匯嗟嗨嗓嗦嗎嗜嗇嗑嗣嗤嗯嗚嗡嗅嗆嗥嗉園圓塞塑塘塗塚塔填塌塭塊塢塒塋奧嫁嫉嫌媾媽媼"],
["b740","媳嫂媲嵩嵯幌幹廉廈弒彙徬微愚意慈感想愛惹愁愈慎慌慄慍愾愴愧愍愆愷戡戢搓搾搞搪搭搽搬搏搜搔損搶搖搗搆敬斟新暗暉暇暈暖暄暘暍會榔業"],
["b7a1","楚楷楠楔極椰概楊楨楫楞楓楹榆楝楣楛歇歲毀殿毓毽溢溯滓溶滂源溝滇滅溥溘溼溺溫滑準溜滄滔溪溧溴煎煙煩煤煉照煜煬煦煌煥煞煆煨煖爺牒猷獅猿猾瑯瑚瑕瑟瑞瑁琿瑙瑛瑜當畸瘀痰瘁痲痱痺痿痴痳盞盟睛睫睦睞督"],
["b840","睹睪睬睜睥睨睢矮碎碰碗碘碌碉硼碑碓硿祺祿禁萬禽稜稚稠稔稟稞窟窠筷節筠筮筧粱粳粵經絹綑綁綏絛置罩罪署義羨群聖聘肆肄腱腰腸腥腮腳腫"],
["b8a1","腹腺腦舅艇蒂葷落萱葵葦葫葉葬葛萼萵葡董葩葭葆虞虜號蛹蜓蜈蜇蜀蛾蛻蜂蜃蜆蜊衙裟裔裙補裘裝裡裊裕裒覜解詫該詳試詩詰誇詼詣誠話誅詭詢詮詬詹詻訾詨豢貊貉賊資賈賄貲賃賂賅跡跟跨路跳跺跪跤跦躲較載軾輊"],
["b940","辟農運遊道遂達逼違遐遇遏過遍遑逾遁鄒鄗酬酪酩釉鈷鉗鈸鈽鉀鈾鉛鉋鉤鉑鈴鉉鉍鉅鈹鈿鉚閘隘隔隕雍雋雉雊雷電雹零靖靴靶預頑頓頊頒頌飼飴"],
["b9a1","飽飾馳馱馴髡鳩麂鼎鼓鼠僧僮僥僖僭僚僕像僑僱僎僩兢凳劃劂匱厭嗾嘀嘛嘗嗽嘔嘆嘉嘍嘎嗷嘖嘟嘈嘐嗶團圖塵塾境墓墊塹墅塽壽夥夢夤奪奩嫡嫦嫩嫗嫖嫘嫣孵寞寧寡寥實寨寢寤察對屢嶄嶇幛幣幕幗幔廓廖弊彆彰徹慇"],
["ba40","愿態慷慢慣慟慚慘慵截撇摘摔撤摸摟摺摑摧搴摭摻敲斡旗旖暢暨暝榜榨榕槁榮槓構榛榷榻榫榴槐槍榭槌榦槃榣歉歌氳漳演滾漓滴漩漾漠漬漏漂漢"],
["baa1","滿滯漆漱漸漲漣漕漫漯澈漪滬漁滲滌滷熔熙煽熊熄熒爾犒犖獄獐瑤瑣瑪瑰瑭甄疑瘧瘍瘋瘉瘓盡監瞄睽睿睡磁碟碧碳碩碣禎福禍種稱窪窩竭端管箕箋筵算箝箔箏箸箇箄粹粽精綻綰綜綽綾綠緊綴網綱綺綢綿綵綸維緒緇綬"],
["bb40","罰翠翡翟聞聚肇腐膀膏膈膊腿膂臧臺與舔舞艋蓉蒿蓆蓄蒙蒞蒲蒜蓋蒸蓀蓓蒐蒼蓑蓊蜿蜜蜻蜢蜥蜴蜘蝕蜷蜩裳褂裴裹裸製裨褚裯誦誌語誣認誡誓誤"],
["bba1","說誥誨誘誑誚誧豪貍貌賓賑賒赫趙趕跼輔輒輕輓辣遠遘遜遣遙遞遢遝遛鄙鄘鄞酵酸酷酴鉸銀銅銘銖鉻銓銜銨鉼銑閡閨閩閣閥閤隙障際雌雒需靼鞅韶頗領颯颱餃餅餌餉駁骯骰髦魁魂鳴鳶鳳麼鼻齊億儀僻僵價儂儈儉儅凜"],
["bc40","劇劈劉劍劊勰厲嘮嘻嘹嘲嘿嘴嘩噓噎噗噴嘶嘯嘰墀墟增墳墜墮墩墦奭嬉嫻嬋嫵嬌嬈寮寬審寫層履嶝嶔幢幟幡廢廚廟廝廣廠彈影德徵慶慧慮慝慕憂"],
["bca1","慼慰慫慾憧憐憫憎憬憚憤憔憮戮摩摯摹撞撲撈撐撰撥撓撕撩撒撮播撫撚撬撙撢撳敵敷數暮暫暴暱樣樟槨樁樞標槽模樓樊槳樂樅槭樑歐歎殤毅毆漿潼澄潑潦潔澆潭潛潸潮澎潺潰潤澗潘滕潯潠潟熟熬熱熨牖犛獎獗瑩璋璃"],
["bd40","瑾璀畿瘠瘩瘟瘤瘦瘡瘢皚皺盤瞎瞇瞌瞑瞋磋磅確磊碾磕碼磐稿稼穀稽稷稻窯窮箭箱範箴篆篇篁箠篌糊締練緯緻緘緬緝編緣線緞緩綞緙緲緹罵罷羯"],
["bda1","翩耦膛膜膝膠膚膘蔗蔽蔚蓮蔬蔭蔓蔑蔣蔡蔔蓬蔥蓿蔆螂蝴蝶蝠蝦蝸蝨蝙蝗蝌蝓衛衝褐複褒褓褕褊誼諒談諄誕請諸課諉諂調誰論諍誶誹諛豌豎豬賠賞賦賤賬賭賢賣賜質賡赭趟趣踫踐踝踢踏踩踟踡踞躺輝輛輟輩輦輪輜輞"],
["be40","輥適遮遨遭遷鄰鄭鄧鄱醇醉醋醃鋅銻銷鋪銬鋤鋁銳銼鋒鋇鋰銲閭閱霄霆震霉靠鞍鞋鞏頡頫頜颳養餓餒餘駝駐駟駛駑駕駒駙骷髮髯鬧魅魄魷魯鴆鴉"],
["bea1","鴃麩麾黎墨齒儒儘儔儐儕冀冪凝劑劓勳噙噫噹噩噤噸噪器噥噱噯噬噢噶壁墾壇壅奮嬝嬴學寰導彊憲憑憩憊懍憶憾懊懈戰擅擁擋撻撼據擄擇擂操撿擒擔撾整曆曉暹曄曇暸樽樸樺橙橫橘樹橄橢橡橋橇樵機橈歙歷氅濂澱澡"],
["bf40","濃澤濁澧澳激澹澶澦澠澴熾燉燐燒燈燕熹燎燙燜燃燄獨璜璣璘璟璞瓢甌甍瘴瘸瘺盧盥瞠瞞瞟瞥磨磚磬磧禦積穎穆穌穋窺篙簑築篤篛篡篩篦糕糖縊"],
["bfa1","縑縈縛縣縞縝縉縐罹羲翰翱翮耨膳膩膨臻興艘艙蕊蕙蕈蕨蕩蕃蕉蕭蕪蕞螃螟螞螢融衡褪褲褥褫褡親覦諦諺諫諱謀諜諧諮諾謁謂諷諭諳諶諼豫豭貓賴蹄踱踴蹂踹踵輻輯輸輳辨辦遵遴選遲遼遺鄴醒錠錶鋸錳錯錢鋼錫錄錚"],
["c040","錐錦錡錕錮錙閻隧隨險雕霎霑霖霍霓霏靛靜靦鞘頰頸頻頷頭頹頤餐館餞餛餡餚駭駢駱骸骼髻髭鬨鮑鴕鴣鴦鴨鴒鴛默黔龍龜優償儡儲勵嚎嚀嚐嚅嚇"],
["c0a1","嚏壕壓壑壎嬰嬪嬤孺尷屨嶼嶺嶽嶸幫彌徽應懂懇懦懋戲戴擎擊擘擠擰擦擬擱擢擭斂斃曙曖檀檔檄檢檜櫛檣橾檗檐檠歜殮毚氈濘濱濟濠濛濤濫濯澀濬濡濩濕濮濰燧營燮燦燥燭燬燴燠爵牆獰獲璩環璦璨癆療癌盪瞳瞪瞰瞬"],
["c140","瞧瞭矯磷磺磴磯礁禧禪穗窿簇簍篾篷簌篠糠糜糞糢糟糙糝縮績繆縷縲繃縫總縱繅繁縴縹繈縵縿縯罄翳翼聱聲聰聯聳臆臃膺臂臀膿膽臉膾臨舉艱薪"],
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["c240","駿鮮鮫鮪鮭鴻鴿麋黏點黜黝黛鼾齋叢嚕嚮壙壘嬸彝懣戳擴擲擾攆擺擻擷斷曜朦檳檬櫃檻檸櫂檮檯歟歸殯瀉瀋濾瀆濺瀑瀏燻燼燾燸獷獵璧璿甕癖癘"],
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["d940","惲愊愖愅惵愓惸惼惾惁愃愘愝愐惿愄愋扊掔掱掰揎揥揨揯揃撝揳揊揠揶揕揲揵摡揟掾揝揜揄揘揓揂揇揌揋揈揰揗揙攲敧敪敤敜敨敥斌斝斞斮旐旒"],
["d9a1","晼晬晻暀晱晹晪晲朁椌棓椄棜椪棬棪棱椏棖棷棫棤棶椓椐棳棡椇棌椈楰梴椑棯棆椔棸棐棽棼棨椋椊椗棎棈棝棞棦棴棑椆棔棩椕椥棇欹欻欿欼殔殗殙殕殽毰毲毳氰淼湆湇渟湉溈渼渽湅湢渫渿湁湝湳渜渳湋湀湑渻渃渮湞"],
["da40","湨湜湡渱渨湠湱湫渹渢渰湓湥渧湸湤湷湕湹湒湦渵渶湚焠焞焯烻焮焱焣焥焢焲焟焨焺焛牋牚犈犉犆犅犋猒猋猰猢猱猳猧猲猭猦猣猵猌琮琬琰琫琖"],
["daa1","琚琡琭琱琤琣琝琩琠琲瓻甯畯畬痧痚痡痦痝痟痤痗皕皒盚睆睇睄睍睅睊睎睋睌矞矬硠硤硥硜硭硱硪确硰硩硨硞硢祴祳祲祰稂稊稃稌稄窙竦竤筊笻筄筈筌筎筀筘筅粢粞粨粡絘絯絣絓絖絧絪絏絭絜絫絒絔絩絑絟絎缾缿罥"],
["db40","罦羢羠羡翗聑聏聐胾胔腃腊腒腏腇脽腍脺臦臮臷臸臹舄舼舽舿艵茻菏菹萣菀菨萒菧菤菼菶萐菆菈菫菣莿萁菝菥菘菿菡菋菎菖菵菉萉萏菞萑萆菂菳"],
["dba1","菕菺菇菑菪萓菃菬菮菄菻菗菢萛菛菾蛘蛢蛦蛓蛣蛚蛪蛝蛫蛜蛬蛩蛗蛨蛑衈衖衕袺裗袹袸裀袾袶袼袷袽袲褁裉覕覘覗觝觚觛詎詍訹詙詀詗詘詄詅詒詈詑詊詌詏豟貁貀貺貾貰貹貵趄趀趉跘跓跍跇跖跜跏跕跙跈跗跅軯軷軺"],
["dc40","軹軦軮軥軵軧軨軶軫軱軬軴軩逭逴逯鄆鄬鄄郿郼鄈郹郻鄁鄀鄇鄅鄃酡酤酟酢酠鈁鈊鈥鈃鈚鈦鈏鈌鈀鈒釿釽鈆鈄鈧鈂鈜鈤鈙鈗鈅鈖镻閍閌閐隇陾隈"],
["dca1","隉隃隀雂雈雃雱雰靬靰靮頇颩飫鳦黹亃亄亶傽傿僆傮僄僊傴僈僂傰僁傺傱僋僉傶傸凗剺剸剻剼嗃嗛嗌嗐嗋嗊嗝嗀嗔嗄嗩喿嗒喍嗏嗕嗢嗖嗈嗲嗍嗙嗂圔塓塨塤塏塍塉塯塕塎塝塙塥塛堽塣塱壼嫇嫄嫋媺媸媱媵媰媿嫈媻嫆"],
["dd40","媷嫀嫊媴媶嫍媹媐寖寘寙尟尳嵱嵣嵊嵥嵲嵬嵞嵨嵧嵢巰幏幎幊幍幋廅廌廆廋廇彀徯徭惷慉慊愫慅愶愲愮慆愯慏愩慀戠酨戣戥戤揅揱揫搐搒搉搠搤"],
["dda1","搳摃搟搕搘搹搷搢搣搌搦搰搨摁搵搯搊搚摀搥搧搋揧搛搮搡搎敯斒旓暆暌暕暐暋暊暙暔晸朠楦楟椸楎楢楱椿楅楪椹楂楗楙楺楈楉椵楬椳椽楥棰楸椴楩楀楯楄楶楘楁楴楌椻楋椷楜楏楑椲楒椯楻椼歆歅歃歂歈歁殛嗀毻毼"],
["de40","毹毷毸溛滖滈溏滀溟溓溔溠溱溹滆滒溽滁溞滉溷溰滍溦滏溲溾滃滜滘溙溒溎溍溤溡溿溳滐滊溗溮溣煇煔煒煣煠煁煝煢煲煸煪煡煂煘煃煋煰煟煐煓"],
["dea1","煄煍煚牏犍犌犑犐犎猼獂猻猺獀獊獉瑄瑊瑋瑒瑑瑗瑀瑏瑐瑎瑂瑆瑍瑔瓡瓿瓾瓽甝畹畷榃痯瘏瘃痷痾痼痹痸瘐痻痶痭痵痽皙皵盝睕睟睠睒睖睚睩睧睔睙睭矠碇碚碔碏碄碕碅碆碡碃硹碙碀碖硻祼禂祽祹稑稘稙稒稗稕稢稓"],
["df40","稛稐窣窢窞竫筦筤筭筴筩筲筥筳筱筰筡筸筶筣粲粴粯綈綆綀綍絿綅絺綎絻綃絼綌綔綄絽綒罭罫罧罨罬羦羥羧翛翜耡腤腠腷腜腩腛腢腲朡腞腶腧腯"],
["dfa1","腄腡舝艉艄艀艂艅蓱萿葖葶葹蒏蒍葥葑葀蒆葧萰葍葽葚葙葴葳葝蔇葞萷萺萴葺葃葸萲葅萩菙葋萯葂萭葟葰萹葎葌葒葯蓅蒎萻葇萶萳葨葾葄萫葠葔葮葐蜋蜄蛷蜌蛺蛖蛵蝍蛸蜎蜉蜁蛶蜍蜅裖裋裍裎裞裛裚裌裐覅覛觟觥觤"],
["e040","觡觠觢觜触詶誆詿詡訿詷誂誄詵誃誁詴詺谼豋豊豥豤豦貆貄貅賌赨赩趑趌趎趏趍趓趔趐趒跰跠跬跱跮跐跩跣跢跧跲跫跴輆軿輁輀輅輇輈輂輋遒逿"],
["e0a1","遄遉逽鄐鄍鄏鄑鄖鄔鄋鄎酮酯鉈鉒鈰鈺鉦鈳鉥鉞銃鈮鉊鉆鉭鉬鉏鉠鉧鉯鈶鉡鉰鈱鉔鉣鉐鉲鉎鉓鉌鉖鈲閟閜閞閛隒隓隑隗雎雺雽雸雵靳靷靸靲頏頍頎颬飶飹馯馲馰馵骭骫魛鳪鳭鳧麀黽僦僔僗僨僳僛僪僝僤僓僬僰僯僣僠"],
["e140","凘劀劁勩勫匰厬嘧嘕嘌嘒嗼嘏嘜嘁嘓嘂嗺嘝嘄嗿嗹墉塼墐墘墆墁塿塴墋塺墇墑墎塶墂墈塻墔墏壾奫嫜嫮嫥嫕嫪嫚嫭嫫嫳嫢嫠嫛嫬嫞嫝嫙嫨嫟孷寠"],
["e1a1","寣屣嶂嶀嵽嶆嵺嶁嵷嶊嶉嶈嵾嵼嶍嵹嵿幘幙幓廘廑廗廎廜廕廙廒廔彄彃彯徶愬愨慁慞慱慳慒慓慲慬憀慴慔慺慛慥愻慪慡慖戩戧戫搫摍摛摝摴摶摲摳摽摵摦撦摎撂摞摜摋摓摠摐摿搿摬摫摙摥摷敳斠暡暠暟朅朄朢榱榶槉"],
["e240","榠槎榖榰榬榼榑榙榎榧榍榩榾榯榿槄榽榤槔榹槊榚槏榳榓榪榡榞槙榗榐槂榵榥槆歊歍歋殞殟殠毃毄毾滎滵滱漃漥滸漷滻漮漉潎漙漚漧漘漻漒滭漊"],
["e2a1","漶潳滹滮漭潀漰漼漵滫漇漎潃漅滽滶漹漜滼漺漟漍漞漈漡熇熐熉熀熅熂熏煻熆熁熗牄牓犗犕犓獃獍獑獌瑢瑳瑱瑵瑲瑧瑮甀甂甃畽疐瘖瘈瘌瘕瘑瘊瘔皸瞁睼瞅瞂睮瞀睯睾瞃碲碪碴碭碨硾碫碞碥碠碬碢碤禘禊禋禖禕禔禓"],
["e340","禗禈禒禐稫穊稰稯稨稦窨窫窬竮箈箜箊箑箐箖箍箌箛箎箅箘劄箙箤箂粻粿粼粺綧綷緂綣綪緁緀緅綝緎緄緆緋緌綯綹綖綼綟綦綮綩綡緉罳翢翣翥翞"],
["e3a1","耤聝聜膉膆膃膇膍膌膋舕蒗蒤蒡蒟蒺蓎蓂蒬蒮蒫蒹蒴蓁蓍蒪蒚蒱蓐蒝蒧蒻蒢蒔蓇蓌蒛蒩蒯蒨蓖蒘蒶蓏蒠蓗蓔蓒蓛蒰蒑虡蜳蜣蜨蝫蝀蜮蜞蜡蜙蜛蝃蜬蝁蜾蝆蜠蜲蜪蜭蜼蜒蜺蜱蜵蝂蜦蜧蜸蜤蜚蜰蜑裷裧裱裲裺裾裮裼裶裻"],
["e440","裰裬裫覝覡覟覞觩觫觨誫誙誋誒誏誖谽豨豩賕賏賗趖踉踂跿踍跽踊踃踇踆踅跾踀踄輐輑輎輍鄣鄜鄠鄢鄟鄝鄚鄤鄡鄛酺酲酹酳銥銤鉶銛鉺銠銔銪銍"],
["e4a1","銦銚銫鉹銗鉿銣鋮銎銂銕銢鉽銈銡銊銆銌銙銧鉾銇銩銝銋鈭隞隡雿靘靽靺靾鞃鞀鞂靻鞄鞁靿韎韍頖颭颮餂餀餇馝馜駃馹馻馺駂馽駇骱髣髧鬾鬿魠魡魟鳱鳲鳵麧僿儃儰僸儆儇僶僾儋儌僽儊劋劌勱勯噈噂噌嘵噁噊噉噆噘"],
["e540","噚噀嘳嘽嘬嘾嘸嘪嘺圚墫墝墱墠墣墯墬墥墡壿嫿嫴嫽嫷嫶嬃嫸嬂嫹嬁嬇嬅嬏屧嶙嶗嶟嶒嶢嶓嶕嶠嶜嶡嶚嶞幩幝幠幜緳廛廞廡彉徲憋憃慹憱憰憢憉"],
["e5a1","憛憓憯憭憟憒憪憡憍慦憳戭摮摰撖撠撅撗撜撏撋撊撌撣撟摨撱撘敶敺敹敻斲斳暵暰暩暲暷暪暯樀樆樗槥槸樕槱槤樠槿槬槢樛樝槾樧槲槮樔槷槧橀樈槦槻樍槼槫樉樄樘樥樏槶樦樇槴樖歑殥殣殢殦氁氀毿氂潁漦潾澇濆澒"],
["e640","澍澉澌潢潏澅潚澖潶潬澂潕潲潒潐潗澔澓潝漀潡潫潽潧澐潓澋潩潿澕潣潷潪潻熲熯熛熰熠熚熩熵熝熥熞熤熡熪熜熧熳犘犚獘獒獞獟獠獝獛獡獚獙"],
["e6a1","獢璇璉璊璆璁瑽璅璈瑼瑹甈甇畾瘥瘞瘙瘝瘜瘣瘚瘨瘛皜皝皞皛瞍瞏瞉瞈磍碻磏磌磑磎磔磈磃磄磉禚禡禠禜禢禛歶稹窲窴窳箷篋箾箬篎箯箹篊箵糅糈糌糋緷緛緪緧緗緡縃緺緦緶緱緰緮緟罶羬羰羭翭翫翪翬翦翨聤聧膣膟"],
["e740","膞膕膢膙膗舖艏艓艒艐艎艑蔤蔻蔏蔀蔩蔎蔉蔍蔟蔊蔧蔜蓻蔫蓺蔈蔌蓴蔪蓲蔕蓷蓫蓳蓼蔒蓪蓩蔖蓾蔨蔝蔮蔂蓽蔞蓶蔱蔦蓧蓨蓰蓯蓹蔘蔠蔰蔋蔙蔯虢"],
["e7a1","蝖蝣蝤蝷蟡蝳蝘蝔蝛蝒蝡蝚蝑蝞蝭蝪蝐蝎蝟蝝蝯蝬蝺蝮蝜蝥蝏蝻蝵蝢蝧蝩衚褅褌褔褋褗褘褙褆褖褑褎褉覢覤覣觭觰觬諏諆誸諓諑諔諕誻諗誾諀諅諘諃誺誽諙谾豍貏賥賟賙賨賚賝賧趠趜趡趛踠踣踥踤踮踕踛踖踑踙踦踧"],
["e840","踔踒踘踓踜踗踚輬輤輘輚輠輣輖輗遳遰遯遧遫鄯鄫鄩鄪鄲鄦鄮醅醆醊醁醂醄醀鋐鋃鋄鋀鋙銶鋏鋱鋟鋘鋩鋗鋝鋌鋯鋂鋨鋊鋈鋎鋦鋍鋕鋉鋠鋞鋧鋑鋓"],
["e8a1","銵鋡鋆銴镼閬閫閮閰隤隢雓霅霈霂靚鞊鞎鞈韐韏頞頝頦頩頨頠頛頧颲餈飺餑餔餖餗餕駜駍駏駓駔駎駉駖駘駋駗駌骳髬髫髳髲髱魆魃魧魴魱魦魶魵魰魨魤魬鳼鳺鳽鳿鳷鴇鴀鳹鳻鴈鴅鴄麃黓鼏鼐儜儓儗儚儑凞匴叡噰噠噮"],
["e940","噳噦噣噭噲噞噷圜圛壈墽壉墿墺壂墼壆嬗嬙嬛嬡嬔嬓嬐嬖嬨嬚嬠嬞寯嶬嶱嶩嶧嶵嶰嶮嶪嶨嶲嶭嶯嶴幧幨幦幯廩廧廦廨廥彋徼憝憨憖懅憴懆懁懌憺"],
["e9a1","憿憸憌擗擖擐擏擉撽撉擃擛擳擙攳敿敼斢曈暾曀曊曋曏暽暻暺曌朣樴橦橉橧樲橨樾橝橭橶橛橑樨橚樻樿橁橪橤橐橏橔橯橩橠樼橞橖橕橍橎橆歕歔歖殧殪殫毈毇氄氃氆澭濋澣濇澼濎濈潞濄澽澞濊澨瀄澥澮澺澬澪濏澿澸"],
["ea40","澢濉澫濍澯澲澰燅燂熿熸燖燀燁燋燔燊燇燏熽燘熼燆燚燛犝犞獩獦獧獬獥獫獪瑿璚璠璔璒璕璡甋疀瘯瘭瘱瘽瘳瘼瘵瘲瘰皻盦瞚瞝瞡瞜瞛瞢瞣瞕瞙"],
["eaa1","瞗磝磩磥磪磞磣磛磡磢磭磟磠禤穄穈穇窶窸窵窱窷篞篣篧篝篕篥篚篨篹篔篪篢篜篫篘篟糒糔糗糐糑縒縡縗縌縟縠縓縎縜縕縚縢縋縏縖縍縔縥縤罃罻罼罺羱翯耪耩聬膱膦膮膹膵膫膰膬膴膲膷膧臲艕艖艗蕖蕅蕫蕍蕓蕡蕘"],
["eb40","蕀蕆蕤蕁蕢蕄蕑蕇蕣蔾蕛蕱蕎蕮蕵蕕蕧蕠薌蕦蕝蕔蕥蕬虣虥虤螛螏螗螓螒螈螁螖螘蝹螇螣螅螐螑螝螄螔螜螚螉褞褦褰褭褮褧褱褢褩褣褯褬褟觱諠"],
["eba1","諢諲諴諵諝謔諤諟諰諈諞諡諨諿諯諻貑貒貐賵賮賱賰賳赬赮趥趧踳踾踸蹀蹅踶踼踽蹁踰踿躽輶輮輵輲輹輷輴遶遹遻邆郺鄳鄵鄶醓醐醑醍醏錧錞錈錟錆錏鍺錸錼錛錣錒錁鍆錭錎錍鋋錝鋺錥錓鋹鋷錴錂錤鋿錩錹錵錪錔錌"],
["ec40","錋鋾錉錀鋻錖閼闍閾閹閺閶閿閵閽隩雔霋霒霐鞙鞗鞔韰韸頵頯頲餤餟餧餩馞駮駬駥駤駰駣駪駩駧骹骿骴骻髶髺髹髷鬳鮀鮅鮇魼魾魻鮂鮓鮒鮐魺鮕"],
["eca1","魽鮈鴥鴗鴠鴞鴔鴩鴝鴘鴢鴐鴙鴟麈麆麇麮麭黕黖黺鼒鼽儦儥儢儤儠儩勴嚓嚌嚍嚆嚄嚃噾嚂噿嚁壖壔壏壒嬭嬥嬲嬣嬬嬧嬦嬯嬮孻寱寲嶷幬幪徾徻懃憵憼懧懠懥懤懨懞擯擩擣擫擤擨斁斀斶旚曒檍檖檁檥檉檟檛檡檞檇檓檎"],
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["f740","糴糱纑罏羇臞艫蘴蘵蘳蘬蘲蘶蠬蠨蠦蠪蠥襱覿覾觻譾讄讂讆讅譿贕躕躔躚躒躐躖躗轠轢酇鑌鑐鑊鑋鑏鑇鑅鑈鑉鑆霿韣顪顩飋饔饛驎驓驔驌驏驈驊"],
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["f840","讌讎讋讈豅贙躘轤轣醼鑢鑕鑝鑗鑞韄韅頀驖驙鬞鬟鬠鱒鱘鱐鱊鱍鱋鱕鱙鱌鱎鷻鷷鷯鷣鷫鷸鷤鷶鷡鷮鷦鷲鷰鷢鷬鷴鷳鷨鷭黂黐黲黳鼆鼜鼸鼷鼶齃齏"],
["f8a1","齱齰齮齯囓囍孎屭攭曭曮欓灟灡灝灠爣瓛瓥矕礸禷禶籪纗羉艭虃蠸蠷蠵衋讔讕躞躟躠躝醾醽釂鑫鑨鑩雥靆靃靇韇韥驞髕魙鱣鱧鱦鱢鱞鱠鸂鷾鸇鸃鸆鸅鸀鸁鸉鷿鷽鸄麠鼞齆齴齵齶囔攮斸欘欙欗欚灢爦犪矘矙礹籩籫糶纚"],
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["f9a1","龤灨灥糷虪蠾蠽蠿讞貜躩軉靋顳顴飌饡馫驤驦驧鬤鸕鸗齈戇欞爧虌躨钂钀钁驩驨鬮鸙爩虋讟钃鱹麷癵驫鱺鸝灩灪麤齾齉龘碁銹裏墻恒粧嫺╔╦╗╠╬╣╚╩╝╒╤╕╞╪╡╘╧╛╓╥╖╟╫╢╙╨╜║═╭╮╰╯▓"]
]

},{}],70:[function(require,module,exports){
module.exports=[
["0","\u0000",127],
["8ea1","｡",62],
["a1a1","　、。，．・：；？！゛゜´｀¨＾￣＿ヽヾゝゞ〃仝々〆〇ー―‐／＼～∥｜…‥‘’“”（）〔〕［］｛｝〈",9,"＋－±×÷＝≠＜＞≦≧∞∴♂♀°′″℃￥＄￠￡％＃＆＊＠§☆★○●◎◇"],
["a2a1","◆□■△▲▽▼※〒→←↑↓〓"],
["a2ba","∈∋⊆⊇⊂⊃∪∩"],
["a2ca","∧∨￢⇒⇔∀∃"],
["a2dc","∠⊥⌒∂∇≡≒≪≫√∽∝∵∫∬"],
["a2f2","ʼn♯♭♪†‡¶"],
["a2fe","◯"],
["a3b0","０",9],
["a3c1","Ａ",25],
["a3e1","ａ",25],
["a4a1","ぁ",82],
["a5a1","ァ",85],
["a6a1","Α",16,"Σ",6],
["a6c1","α",16,"σ",6],
["a7a1","А",5,"ЁЖ",25],
["a7d1","а",5,"ёж",25],
["a8a1","─│┌┐┘└├┬┤┴┼━┃┏┓┛┗┣┳┫┻╋┠┯┨┷┿┝┰┥┸╂"],
["ada1","①",19,"Ⅰ",9],
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["addf","㍻〝〟№㏍℡㊤",4,"㈱㈲㈹㍾㍽㍼≒≡∫∮∑√⊥∠∟⊿∵∩∪"],
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["b4a1","粥刈苅瓦乾侃冠寒刊勘勧巻喚堪姦完官寛干幹患感慣憾換敢柑桓棺款歓汗漢澗潅環甘監看竿管簡緩缶翰肝艦莞観諌貫還鑑間閑関陥韓館舘丸含岸巌玩癌眼岩翫贋雁頑顔願企伎危喜器基奇嬉寄岐希幾忌揮机旗既期棋棄"],
["b5a1","機帰毅気汽畿祈季稀紀徽規記貴起軌輝飢騎鬼亀偽儀妓宜戯技擬欺犠疑祇義蟻誼議掬菊鞠吉吃喫桔橘詰砧杵黍却客脚虐逆丘久仇休及吸宮弓急救朽求汲泣灸球究窮笈級糾給旧牛去居巨拒拠挙渠虚許距鋸漁禦魚亨享京"],
["b6a1","供侠僑兇競共凶協匡卿叫喬境峡強彊怯恐恭挟教橋況狂狭矯胸脅興蕎郷鏡響饗驚仰凝尭暁業局曲極玉桐粁僅勤均巾錦斤欣欽琴禁禽筋緊芹菌衿襟謹近金吟銀九倶句区狗玖矩苦躯駆駈駒具愚虞喰空偶寓遇隅串櫛釧屑屈"],
["b7a1","掘窟沓靴轡窪熊隈粂栗繰桑鍬勲君薫訓群軍郡卦袈祁係傾刑兄啓圭珪型契形径恵慶慧憩掲携敬景桂渓畦稽系経継繋罫茎荊蛍計詣警軽頚鶏芸迎鯨劇戟撃激隙桁傑欠決潔穴結血訣月件倹倦健兼券剣喧圏堅嫌建憲懸拳捲"],
["b8a1","検権牽犬献研硯絹県肩見謙賢軒遣鍵険顕験鹸元原厳幻弦減源玄現絃舷言諺限乎個古呼固姑孤己庫弧戸故枯湖狐糊袴股胡菰虎誇跨鈷雇顧鼓五互伍午呉吾娯後御悟梧檎瑚碁語誤護醐乞鯉交佼侯候倖光公功効勾厚口向"],
["b9a1","后喉坑垢好孔孝宏工巧巷幸広庚康弘恒慌抗拘控攻昂晃更杭校梗構江洪浩港溝甲皇硬稿糠紅紘絞綱耕考肯肱腔膏航荒行衡講貢購郊酵鉱砿鋼閤降項香高鴻剛劫号合壕拷濠豪轟麹克刻告国穀酷鵠黒獄漉腰甑忽惚骨狛込"],
["baa1","此頃今困坤墾婚恨懇昏昆根梱混痕紺艮魂些佐叉唆嵯左差査沙瑳砂詐鎖裟坐座挫債催再最哉塞妻宰彩才採栽歳済災采犀砕砦祭斎細菜裁載際剤在材罪財冴坂阪堺榊肴咲崎埼碕鷺作削咋搾昨朔柵窄策索錯桜鮭笹匙冊刷"],
["bba1","察拶撮擦札殺薩雑皐鯖捌錆鮫皿晒三傘参山惨撒散桟燦珊産算纂蚕讃賛酸餐斬暫残仕仔伺使刺司史嗣四士始姉姿子屍市師志思指支孜斯施旨枝止死氏獅祉私糸紙紫肢脂至視詞詩試誌諮資賜雌飼歯事似侍児字寺慈持時"],
["bca1","次滋治爾璽痔磁示而耳自蒔辞汐鹿式識鴫竺軸宍雫七叱執失嫉室悉湿漆疾質実蔀篠偲柴芝屡蕊縞舎写射捨赦斜煮社紗者謝車遮蛇邪借勺尺杓灼爵酌釈錫若寂弱惹主取守手朱殊狩珠種腫趣酒首儒受呪寿授樹綬需囚収周"],
["bda1","宗就州修愁拾洲秀秋終繍習臭舟蒐衆襲讐蹴輯週酋酬集醜什住充十従戎柔汁渋獣縦重銃叔夙宿淑祝縮粛塾熟出術述俊峻春瞬竣舜駿准循旬楯殉淳準潤盾純巡遵醇順処初所暑曙渚庶緒署書薯藷諸助叙女序徐恕鋤除傷償"],
["bea1","勝匠升召哨商唱嘗奨妾娼宵将小少尚庄床廠彰承抄招掌捷昇昌昭晶松梢樟樵沼消渉湘焼焦照症省硝礁祥称章笑粧紹肖菖蒋蕉衝裳訟証詔詳象賞醤鉦鍾鐘障鞘上丈丞乗冗剰城場壌嬢常情擾条杖浄状畳穣蒸譲醸錠嘱埴飾"],
["bfa1","拭植殖燭織職色触食蝕辱尻伸信侵唇娠寝審心慎振新晋森榛浸深申疹真神秦紳臣芯薪親診身辛進針震人仁刃塵壬尋甚尽腎訊迅陣靭笥諏須酢図厨逗吹垂帥推水炊睡粋翠衰遂酔錐錘随瑞髄崇嵩数枢趨雛据杉椙菅頗雀裾"],
["c0a1","澄摺寸世瀬畝是凄制勢姓征性成政整星晴棲栖正清牲生盛精聖声製西誠誓請逝醒青静斉税脆隻席惜戚斥昔析石積籍績脊責赤跡蹟碩切拙接摂折設窃節説雪絶舌蝉仙先千占宣専尖川戦扇撰栓栴泉浅洗染潜煎煽旋穿箭線"],
["c1a1","繊羨腺舛船薦詮賎践選遷銭銑閃鮮前善漸然全禅繕膳糎噌塑岨措曾曽楚狙疏疎礎祖租粗素組蘇訴阻遡鼠僧創双叢倉喪壮奏爽宋層匝惣想捜掃挿掻操早曹巣槍槽漕燥争痩相窓糟総綜聡草荘葬蒼藻装走送遭鎗霜騒像増憎"],
["c2a1","臓蔵贈造促側則即息捉束測足速俗属賊族続卒袖其揃存孫尊損村遜他多太汰詑唾堕妥惰打柁舵楕陀駄騨体堆対耐岱帯待怠態戴替泰滞胎腿苔袋貸退逮隊黛鯛代台大第醍題鷹滝瀧卓啄宅托択拓沢濯琢託鐸濁諾茸凧蛸只"],
["c3a1","叩但達辰奪脱巽竪辿棚谷狸鱈樽誰丹単嘆坦担探旦歎淡湛炭短端箪綻耽胆蛋誕鍛団壇弾断暖檀段男談値知地弛恥智池痴稚置致蜘遅馳築畜竹筑蓄逐秩窒茶嫡着中仲宙忠抽昼柱注虫衷註酎鋳駐樗瀦猪苧著貯丁兆凋喋寵"],
["c4a1","帖帳庁弔張彫徴懲挑暢朝潮牒町眺聴脹腸蝶調諜超跳銚長頂鳥勅捗直朕沈珍賃鎮陳津墜椎槌追鎚痛通塚栂掴槻佃漬柘辻蔦綴鍔椿潰坪壷嬬紬爪吊釣鶴亭低停偵剃貞呈堤定帝底庭廷弟悌抵挺提梯汀碇禎程締艇訂諦蹄逓"],
["c5a1","邸鄭釘鼎泥摘擢敵滴的笛適鏑溺哲徹撤轍迭鉄典填天展店添纏甜貼転顛点伝殿澱田電兎吐堵塗妬屠徒斗杜渡登菟賭途都鍍砥砺努度土奴怒倒党冬凍刀唐塔塘套宕島嶋悼投搭東桃梼棟盗淘湯涛灯燈当痘祷等答筒糖統到"],
["c6a1","董蕩藤討謄豆踏逃透鐙陶頭騰闘働動同堂導憧撞洞瞳童胴萄道銅峠鴇匿得徳涜特督禿篤毒独読栃橡凸突椴届鳶苫寅酉瀞噸屯惇敦沌豚遁頓呑曇鈍奈那内乍凪薙謎灘捺鍋楢馴縄畷南楠軟難汝二尼弐迩匂賑肉虹廿日乳入"],
["c7a1","如尿韮任妊忍認濡禰祢寧葱猫熱年念捻撚燃粘乃廼之埜嚢悩濃納能脳膿農覗蚤巴把播覇杷波派琶破婆罵芭馬俳廃拝排敗杯盃牌背肺輩配倍培媒梅楳煤狽買売賠陪這蝿秤矧萩伯剥博拍柏泊白箔粕舶薄迫曝漠爆縛莫駁麦"],
["c8a1","函箱硲箸肇筈櫨幡肌畑畠八鉢溌発醗髪伐罰抜筏閥鳩噺塙蛤隼伴判半反叛帆搬斑板氾汎版犯班畔繁般藩販範釆煩頒飯挽晩番盤磐蕃蛮匪卑否妃庇彼悲扉批披斐比泌疲皮碑秘緋罷肥被誹費避非飛樋簸備尾微枇毘琵眉美"],
["c9a1","鼻柊稗匹疋髭彦膝菱肘弼必畢筆逼桧姫媛紐百謬俵彪標氷漂瓢票表評豹廟描病秒苗錨鋲蒜蛭鰭品彬斌浜瀕貧賓頻敏瓶不付埠夫婦富冨布府怖扶敷斧普浮父符腐膚芙譜負賦赴阜附侮撫武舞葡蕪部封楓風葺蕗伏副復幅服"],
["caa1","福腹複覆淵弗払沸仏物鮒分吻噴墳憤扮焚奮粉糞紛雰文聞丙併兵塀幣平弊柄並蔽閉陛米頁僻壁癖碧別瞥蔑箆偏変片篇編辺返遍便勉娩弁鞭保舗鋪圃捕歩甫補輔穂募墓慕戊暮母簿菩倣俸包呆報奉宝峰峯崩庖抱捧放方朋"],
["cba1","法泡烹砲縫胞芳萌蓬蜂褒訪豊邦鋒飽鳳鵬乏亡傍剖坊妨帽忘忙房暴望某棒冒紡肪膨謀貌貿鉾防吠頬北僕卜墨撲朴牧睦穆釦勃没殆堀幌奔本翻凡盆摩磨魔麻埋妹昧枚毎哩槙幕膜枕鮪柾鱒桝亦俣又抹末沫迄侭繭麿万慢満"],
["cca1","漫蔓味未魅巳箕岬密蜜湊蓑稔脈妙粍民眠務夢無牟矛霧鵡椋婿娘冥名命明盟迷銘鳴姪牝滅免棉綿緬面麺摸模茂妄孟毛猛盲網耗蒙儲木黙目杢勿餅尤戻籾貰問悶紋門匁也冶夜爺耶野弥矢厄役約薬訳躍靖柳薮鑓愉愈油癒"],
["cda1","諭輸唯佑優勇友宥幽悠憂揖有柚湧涌猶猷由祐裕誘遊邑郵雄融夕予余与誉輿預傭幼妖容庸揚揺擁曜楊様洋溶熔用窯羊耀葉蓉要謡踊遥陽養慾抑欲沃浴翌翼淀羅螺裸来莱頼雷洛絡落酪乱卵嵐欄濫藍蘭覧利吏履李梨理璃"],
["cea1","痢裏裡里離陸律率立葎掠略劉流溜琉留硫粒隆竜龍侶慮旅虜了亮僚両凌寮料梁涼猟療瞭稜糧良諒遼量陵領力緑倫厘林淋燐琳臨輪隣鱗麟瑠塁涙累類令伶例冷励嶺怜玲礼苓鈴隷零霊麗齢暦歴列劣烈裂廉恋憐漣煉簾練聯"],
["cfa1","蓮連錬呂魯櫓炉賂路露労婁廊弄朗楼榔浪漏牢狼篭老聾蝋郎六麓禄肋録論倭和話歪賄脇惑枠鷲亙亘鰐詫藁蕨椀湾碗腕"],
["d0a1","弌丐丕个丱丶丼丿乂乖乘亂亅豫亊舒弍于亞亟亠亢亰亳亶从仍仄仆仂仗仞仭仟价伉佚估佛佝佗佇佶侈侏侘佻佩佰侑佯來侖儘俔俟俎俘俛俑俚俐俤俥倚倨倔倪倥倅伜俶倡倩倬俾俯們倆偃假會偕偐偈做偖偬偸傀傚傅傴傲"],
["d1a1","僉僊傳僂僖僞僥僭僣僮價僵儉儁儂儖儕儔儚儡儺儷儼儻儿兀兒兌兔兢竸兩兪兮冀冂囘册冉冏冑冓冕冖冤冦冢冩冪冫决冱冲冰况冽凅凉凛几處凩凭凰凵凾刄刋刔刎刧刪刮刳刹剏剄剋剌剞剔剪剴剩剳剿剽劍劔劒剱劈劑辨"],
["d2a1","辧劬劭劼劵勁勍勗勞勣勦飭勠勳勵勸勹匆匈甸匍匐匏匕匚匣匯匱匳匸區卆卅丗卉卍凖卞卩卮夘卻卷厂厖厠厦厥厮厰厶參簒雙叟曼燮叮叨叭叺吁吽呀听吭吼吮吶吩吝呎咏呵咎呟呱呷呰咒呻咀呶咄咐咆哇咢咸咥咬哄哈咨"],
["d3a1","咫哂咤咾咼哘哥哦唏唔哽哮哭哺哢唹啀啣啌售啜啅啖啗唸唳啝喙喀咯喊喟啻啾喘喞單啼喃喩喇喨嗚嗅嗟嗄嗜嗤嗔嘔嗷嘖嗾嗽嘛嗹噎噐營嘴嘶嘲嘸噫噤嘯噬噪嚆嚀嚊嚠嚔嚏嚥嚮嚶嚴囂嚼囁囃囀囈囎囑囓囗囮囹圀囿圄圉"],
["d4a1","圈國圍圓團圖嗇圜圦圷圸坎圻址坏坩埀垈坡坿垉垓垠垳垤垪垰埃埆埔埒埓堊埖埣堋堙堝塲堡塢塋塰毀塒堽塹墅墹墟墫墺壞墻墸墮壅壓壑壗壙壘壥壜壤壟壯壺壹壻壼壽夂夊夐夛梦夥夬夭夲夸夾竒奕奐奎奚奘奢奠奧奬奩"],
["d5a1","奸妁妝佞侫妣妲姆姨姜妍姙姚娥娟娑娜娉娚婀婬婉娵娶婢婪媚媼媾嫋嫂媽嫣嫗嫦嫩嫖嫺嫻嬌嬋嬖嬲嫐嬪嬶嬾孃孅孀孑孕孚孛孥孩孰孳孵學斈孺宀它宦宸寃寇寉寔寐寤實寢寞寥寫寰寶寳尅將專對尓尠尢尨尸尹屁屆屎屓"],
["d6a1","屐屏孱屬屮乢屶屹岌岑岔妛岫岻岶岼岷峅岾峇峙峩峽峺峭嶌峪崋崕崗嵜崟崛崑崔崢崚崙崘嵌嵒嵎嵋嵬嵳嵶嶇嶄嶂嶢嶝嶬嶮嶽嶐嶷嶼巉巍巓巒巖巛巫已巵帋帚帙帑帛帶帷幄幃幀幎幗幔幟幢幤幇幵并幺麼广庠廁廂廈廐廏"],
["d7a1","廖廣廝廚廛廢廡廨廩廬廱廳廰廴廸廾弃弉彝彜弋弑弖弩弭弸彁彈彌彎弯彑彖彗彙彡彭彳彷徃徂彿徊很徑徇從徙徘徠徨徭徼忖忻忤忸忱忝悳忿怡恠怙怐怩怎怱怛怕怫怦怏怺恚恁恪恷恟恊恆恍恣恃恤恂恬恫恙悁悍惧悃悚"],
["d8a1","悄悛悖悗悒悧悋惡悸惠惓悴忰悽惆悵惘慍愕愆惶惷愀惴惺愃愡惻惱愍愎慇愾愨愧慊愿愼愬愴愽慂慄慳慷慘慙慚慫慴慯慥慱慟慝慓慵憙憖憇憬憔憚憊憑憫憮懌懊應懷懈懃懆憺懋罹懍懦懣懶懺懴懿懽懼懾戀戈戉戍戌戔戛"],
["d9a1","戞戡截戮戰戲戳扁扎扞扣扛扠扨扼抂抉找抒抓抖拔抃抔拗拑抻拏拿拆擔拈拜拌拊拂拇抛拉挌拮拱挧挂挈拯拵捐挾捍搜捏掖掎掀掫捶掣掏掉掟掵捫捩掾揩揀揆揣揉插揶揄搖搴搆搓搦搶攝搗搨搏摧摯摶摎攪撕撓撥撩撈撼"],
["daa1","據擒擅擇撻擘擂擱擧舉擠擡抬擣擯攬擶擴擲擺攀擽攘攜攅攤攣攫攴攵攷收攸畋效敖敕敍敘敞敝敲數斂斃變斛斟斫斷旃旆旁旄旌旒旛旙无旡旱杲昊昃旻杳昵昶昴昜晏晄晉晁晞晝晤晧晨晟晢晰暃暈暎暉暄暘暝曁暹曉暾暼"],
["dba1","曄暸曖曚曠昿曦曩曰曵曷朏朖朞朦朧霸朮朿朶杁朸朷杆杞杠杙杣杤枉杰枩杼杪枌枋枦枡枅枷柯枴柬枳柩枸柤柞柝柢柮枹柎柆柧檜栞框栩桀桍栲桎梳栫桙档桷桿梟梏梭梔條梛梃檮梹桴梵梠梺椏梍桾椁棊椈棘椢椦棡椌棍"],
["dca1","棔棧棕椶椒椄棗棣椥棹棠棯椨椪椚椣椡棆楹楷楜楸楫楔楾楮椹楴椽楙椰楡楞楝榁楪榲榮槐榿槁槓榾槎寨槊槝榻槃榧樮榑榠榜榕榴槞槨樂樛槿權槹槲槧樅榱樞槭樔槫樊樒櫁樣樓橄樌橲樶橸橇橢橙橦橈樸樢檐檍檠檄檢檣"],
["dda1","檗蘗檻櫃櫂檸檳檬櫞櫑櫟檪櫚櫪櫻欅蘖櫺欒欖鬱欟欸欷盜欹飮歇歃歉歐歙歔歛歟歡歸歹歿殀殄殃殍殘殕殞殤殪殫殯殲殱殳殷殼毆毋毓毟毬毫毳毯麾氈氓气氛氤氣汞汕汢汪沂沍沚沁沛汾汨汳沒沐泄泱泓沽泗泅泝沮沱沾"],
["dea1","沺泛泯泙泪洟衍洶洫洽洸洙洵洳洒洌浣涓浤浚浹浙涎涕濤涅淹渕渊涵淇淦涸淆淬淞淌淨淒淅淺淙淤淕淪淮渭湮渮渙湲湟渾渣湫渫湶湍渟湃渺湎渤滿渝游溂溪溘滉溷滓溽溯滄溲滔滕溏溥滂溟潁漑灌滬滸滾漿滲漱滯漲滌"],
["dfa1","漾漓滷澆潺潸澁澀潯潛濳潭澂潼潘澎澑濂潦澳澣澡澤澹濆澪濟濕濬濔濘濱濮濛瀉瀋濺瀑瀁瀏濾瀛瀚潴瀝瀘瀟瀰瀾瀲灑灣炙炒炯烱炬炸炳炮烟烋烝烙焉烽焜焙煥煕熈煦煢煌煖煬熏燻熄熕熨熬燗熹熾燒燉燔燎燠燬燧燵燼"],
["e0a1","燹燿爍爐爛爨爭爬爰爲爻爼爿牀牆牋牘牴牾犂犁犇犒犖犢犧犹犲狃狆狄狎狒狢狠狡狹狷倏猗猊猜猖猝猴猯猩猥猾獎獏默獗獪獨獰獸獵獻獺珈玳珎玻珀珥珮珞璢琅瑯琥珸琲琺瑕琿瑟瑙瑁瑜瑩瑰瑣瑪瑶瑾璋璞璧瓊瓏瓔珱"],
["e1a1","瓠瓣瓧瓩瓮瓲瓰瓱瓸瓷甄甃甅甌甎甍甕甓甞甦甬甼畄畍畊畉畛畆畚畩畤畧畫畭畸當疆疇畴疊疉疂疔疚疝疥疣痂疳痃疵疽疸疼疱痍痊痒痙痣痞痾痿痼瘁痰痺痲痳瘋瘍瘉瘟瘧瘠瘡瘢瘤瘴瘰瘻癇癈癆癜癘癡癢癨癩癪癧癬癰"],
["e2a1","癲癶癸發皀皃皈皋皎皖皓皙皚皰皴皸皹皺盂盍盖盒盞盡盥盧盪蘯盻眈眇眄眩眤眞眥眦眛眷眸睇睚睨睫睛睥睿睾睹瞎瞋瞑瞠瞞瞰瞶瞹瞿瞼瞽瞻矇矍矗矚矜矣矮矼砌砒礦砠礪硅碎硴碆硼碚碌碣碵碪碯磑磆磋磔碾碼磅磊磬"],
["e3a1","磧磚磽磴礇礒礑礙礬礫祀祠祗祟祚祕祓祺祿禊禝禧齋禪禮禳禹禺秉秕秧秬秡秣稈稍稘稙稠稟禀稱稻稾稷穃穗穉穡穢穩龝穰穹穽窈窗窕窘窖窩竈窰窶竅竄窿邃竇竊竍竏竕竓站竚竝竡竢竦竭竰笂笏笊笆笳笘笙笞笵笨笶筐"],
["e4a1","筺笄筍笋筌筅筵筥筴筧筰筱筬筮箝箘箟箍箜箚箋箒箏筝箙篋篁篌篏箴篆篝篩簑簔篦篥籠簀簇簓篳篷簗簍篶簣簧簪簟簷簫簽籌籃籔籏籀籐籘籟籤籖籥籬籵粃粐粤粭粢粫粡粨粳粲粱粮粹粽糀糅糂糘糒糜糢鬻糯糲糴糶糺紆"],
["e5a1","紂紜紕紊絅絋紮紲紿紵絆絳絖絎絲絨絮絏絣經綉絛綏絽綛綺綮綣綵緇綽綫總綢綯緜綸綟綰緘緝緤緞緻緲緡縅縊縣縡縒縱縟縉縋縢繆繦縻縵縹繃縷縲縺繧繝繖繞繙繚繹繪繩繼繻纃緕繽辮繿纈纉續纒纐纓纔纖纎纛纜缸缺"],
["e6a1","罅罌罍罎罐网罕罔罘罟罠罨罩罧罸羂羆羃羈羇羌羔羞羝羚羣羯羲羹羮羶羸譱翅翆翊翕翔翡翦翩翳翹飜耆耄耋耒耘耙耜耡耨耿耻聊聆聒聘聚聟聢聨聳聲聰聶聹聽聿肄肆肅肛肓肚肭冐肬胛胥胙胝胄胚胖脉胯胱脛脩脣脯腋"],
["e7a1","隋腆脾腓腑胼腱腮腥腦腴膃膈膊膀膂膠膕膤膣腟膓膩膰膵膾膸膽臀臂膺臉臍臑臙臘臈臚臟臠臧臺臻臾舁舂舅與舊舍舐舖舩舫舸舳艀艙艘艝艚艟艤艢艨艪艫舮艱艷艸艾芍芒芫芟芻芬苡苣苟苒苴苳苺莓范苻苹苞茆苜茉苙"],
["e8a1","茵茴茖茲茱荀茹荐荅茯茫茗茘莅莚莪莟莢莖茣莎莇莊荼莵荳荵莠莉莨菴萓菫菎菽萃菘萋菁菷萇菠菲萍萢萠莽萸蔆菻葭萪萼蕚蒄葷葫蒭葮蒂葩葆萬葯葹萵蓊葢蒹蒿蒟蓙蓍蒻蓚蓐蓁蓆蓖蒡蔡蓿蓴蔗蔘蔬蔟蔕蔔蓼蕀蕣蕘蕈"],
["e9a1","蕁蘂蕋蕕薀薤薈薑薊薨蕭薔薛藪薇薜蕷蕾薐藉薺藏薹藐藕藝藥藜藹蘊蘓蘋藾藺蘆蘢蘚蘰蘿虍乕虔號虧虱蚓蚣蚩蚪蚋蚌蚶蚯蛄蛆蚰蛉蠣蚫蛔蛞蛩蛬蛟蛛蛯蜒蜆蜈蜀蜃蛻蜑蜉蜍蛹蜊蜴蜿蜷蜻蜥蜩蜚蝠蝟蝸蝌蝎蝴蝗蝨蝮蝙"],
["eaa1","蝓蝣蝪蠅螢螟螂螯蟋螽蟀蟐雖螫蟄螳蟇蟆螻蟯蟲蟠蠏蠍蟾蟶蟷蠎蟒蠑蠖蠕蠢蠡蠱蠶蠹蠧蠻衄衂衒衙衞衢衫袁衾袞衵衽袵衲袂袗袒袮袙袢袍袤袰袿袱裃裄裔裘裙裝裹褂裼裴裨裲褄褌褊褓襃褞褥褪褫襁襄褻褶褸襌褝襠襞"],
["eba1","襦襤襭襪襯襴襷襾覃覈覊覓覘覡覩覦覬覯覲覺覽覿觀觚觜觝觧觴觸訃訖訐訌訛訝訥訶詁詛詒詆詈詼詭詬詢誅誂誄誨誡誑誥誦誚誣諄諍諂諚諫諳諧諤諱謔諠諢諷諞諛謌謇謚諡謖謐謗謠謳鞫謦謫謾謨譁譌譏譎證譖譛譚譫"],
["eca1","譟譬譯譴譽讀讌讎讒讓讖讙讚谺豁谿豈豌豎豐豕豢豬豸豺貂貉貅貊貍貎貔豼貘戝貭貪貽貲貳貮貶賈賁賤賣賚賽賺賻贄贅贊贇贏贍贐齎贓賍贔贖赧赭赱赳趁趙跂趾趺跏跚跖跌跛跋跪跫跟跣跼踈踉跿踝踞踐踟蹂踵踰踴蹊"],
["eda1","蹇蹉蹌蹐蹈蹙蹤蹠踪蹣蹕蹶蹲蹼躁躇躅躄躋躊躓躑躔躙躪躡躬躰軆躱躾軅軈軋軛軣軼軻軫軾輊輅輕輒輙輓輜輟輛輌輦輳輻輹轅轂輾轌轉轆轎轗轜轢轣轤辜辟辣辭辯辷迚迥迢迪迯邇迴逅迹迺逑逕逡逍逞逖逋逧逶逵逹迸"],
["eea1","遏遐遑遒逎遉逾遖遘遞遨遯遶隨遲邂遽邁邀邊邉邏邨邯邱邵郢郤扈郛鄂鄒鄙鄲鄰酊酖酘酣酥酩酳酲醋醉醂醢醫醯醪醵醴醺釀釁釉釋釐釖釟釡釛釼釵釶鈞釿鈔鈬鈕鈑鉞鉗鉅鉉鉤鉈銕鈿鉋鉐銜銖銓銛鉚鋏銹銷鋩錏鋺鍄錮"],
["efa1","錙錢錚錣錺錵錻鍜鍠鍼鍮鍖鎰鎬鎭鎔鎹鏖鏗鏨鏥鏘鏃鏝鏐鏈鏤鐚鐔鐓鐃鐇鐐鐶鐫鐵鐡鐺鑁鑒鑄鑛鑠鑢鑞鑪鈩鑰鑵鑷鑽鑚鑼鑾钁鑿閂閇閊閔閖閘閙閠閨閧閭閼閻閹閾闊濶闃闍闌闕闔闖關闡闥闢阡阨阮阯陂陌陏陋陷陜陞"],
["f0a1","陝陟陦陲陬隍隘隕隗險隧隱隲隰隴隶隸隹雎雋雉雍襍雜霍雕雹霄霆霈霓霎霑霏霖霙霤霪霰霹霽霾靄靆靈靂靉靜靠靤靦靨勒靫靱靹鞅靼鞁靺鞆鞋鞏鞐鞜鞨鞦鞣鞳鞴韃韆韈韋韜韭齏韲竟韶韵頏頌頸頤頡頷頽顆顏顋顫顯顰"],
["f1a1","顱顴顳颪颯颱颶飄飃飆飩飫餃餉餒餔餘餡餝餞餤餠餬餮餽餾饂饉饅饐饋饑饒饌饕馗馘馥馭馮馼駟駛駝駘駑駭駮駱駲駻駸騁騏騅駢騙騫騷驅驂驀驃騾驕驍驛驗驟驢驥驤驩驫驪骭骰骼髀髏髑髓體髞髟髢髣髦髯髫髮髴髱髷"],
["f2a1","髻鬆鬘鬚鬟鬢鬣鬥鬧鬨鬩鬪鬮鬯鬲魄魃魏魍魎魑魘魴鮓鮃鮑鮖鮗鮟鮠鮨鮴鯀鯊鮹鯆鯏鯑鯒鯣鯢鯤鯔鯡鰺鯲鯱鯰鰕鰔鰉鰓鰌鰆鰈鰒鰊鰄鰮鰛鰥鰤鰡鰰鱇鰲鱆鰾鱚鱠鱧鱶鱸鳧鳬鳰鴉鴈鳫鴃鴆鴪鴦鶯鴣鴟鵄鴕鴒鵁鴿鴾鵆鵈"],
["f3a1","鵝鵞鵤鵑鵐鵙鵲鶉鶇鶫鵯鵺鶚鶤鶩鶲鷄鷁鶻鶸鶺鷆鷏鷂鷙鷓鷸鷦鷭鷯鷽鸚鸛鸞鹵鹹鹽麁麈麋麌麒麕麑麝麥麩麸麪麭靡黌黎黏黐黔黜點黝黠黥黨黯黴黶黷黹黻黼黽鼇鼈皷鼕鼡鼬鼾齊齒齔齣齟齠齡齦齧齬齪齷齲齶龕龜龠"],
["f4a1","堯槇遙瑤凜熙"],
["f9a1","纊褜鍈銈蓜俉炻昱棈鋹曻彅丨仡仼伀伃伹佖侒侊侚侔俍偀倢俿倞偆偰偂傔僴僘兊兤冝冾凬刕劜劦勀勛匀匇匤卲厓厲叝﨎咜咊咩哿喆坙坥垬埈埇﨏塚增墲夋奓奛奝奣妤妺孖寀甯寘寬尞岦岺峵崧嵓﨑嵂嵭嶸嶹巐弡弴彧德"],
["faa1","忞恝悅悊惞惕愠惲愑愷愰憘戓抦揵摠撝擎敎昀昕昻昉昮昞昤晥晗晙晴晳暙暠暲暿曺朎朗杦枻桒柀栁桄棏﨓楨﨔榘槢樰橫橆橳橾櫢櫤毖氿汜沆汯泚洄涇浯涖涬淏淸淲淼渹湜渧渼溿澈澵濵瀅瀇瀨炅炫焏焄煜煆煇凞燁燾犱"],
["fba1","犾猤猪獷玽珉珖珣珒琇珵琦琪琩琮瑢璉璟甁畯皂皜皞皛皦益睆劯砡硎硤硺礰礼神祥禔福禛竑竧靖竫箞精絈絜綷綠緖繒罇羡羽茁荢荿菇菶葈蒴蕓蕙蕫﨟薰蘒﨡蠇裵訒訷詹誧誾諟諸諶譓譿賰賴贒赶﨣軏﨤逸遧郞都鄕鄧釚"],
["fca1","釗釞釭釮釤釥鈆鈐鈊鈺鉀鈼鉎鉙鉑鈹鉧銧鉷鉸鋧鋗鋙鋐﨧鋕鋠鋓錥錡鋻﨨錞鋿錝錂鍰鍗鎤鏆鏞鏸鐱鑅鑈閒隆﨩隝隯霳霻靃靍靏靑靕顗顥飯飼餧館馞驎髙髜魵魲鮏鮱鮻鰀鵰鵫鶴鸙黑"],
["fcf1","ⅰ",9,"￢￤＇＂"],
["8fa2af","˘ˇ¸˙˝¯˛˚～΄΅"],
["8fa2c2","¡¦¿"],
["8fa2eb","ºª©®™¤№"],
["8fa6e1","ΆΈΉΊΪ"],
["8fa6e7","Ό"],
["8fa6e9","ΎΫ"],
["8fa6ec","Ώ"],
["8fa6f1","άέήίϊΐόςύϋΰώ"],
["8fa7c2","Ђ",10,"ЎЏ"],
["8fa7f2","ђ",10,"ўџ"],
["8fa9a1","ÆĐ"],
["8fa9a4","Ħ"],
["8fa9a6","IJ"],
["8fa9a8","ŁĿ"],
["8fa9ab","ŊØŒ"],
["8fa9af","ŦÞ"],
["8fa9c1","æđðħıijĸłŀʼnŋøœßŧþ"],
["8faaa1","ÁÀÄÂĂǍĀĄÅÃĆĈČÇĊĎÉÈËÊĚĖĒĘ"],
["8faaba","ĜĞĢĠĤÍÌÏÎǏİĪĮĨĴĶĹĽĻŃŇŅÑÓÒÖÔǑŐŌÕŔŘŖŚŜŠŞŤŢÚÙÜÛŬǓŰŪŲŮŨǗǛǙǕŴÝŸŶŹŽŻ"],
["8faba1","áàäâăǎāąåãćĉčçċďéèëêěėēęǵĝğ"],
["8fabbd","ġĥíìïîǐ"],
["8fabc5","īįĩĵķĺľļńňņñóòöôǒőōõŕřŗśŝšşťţúùüûŭǔűūųůũǘǜǚǖŵýÿŷźžż"],
["8fb0a1","丂丄丅丌丒丟丣两丨丫丮丯丰丵乀乁乄乇乑乚乜乣乨乩乴乵乹乿亍亖亗亝亯亹仃仐仚仛仠仡仢仨仯仱仳仵份仾仿伀伂伃伈伋伌伒伕伖众伙伮伱你伳伵伷伹伻伾佀佂佈佉佋佌佒佔佖佘佟佣佪佬佮佱佷佸佹佺佽佾侁侂侄"],
["8fb1a1","侅侉侊侌侎侐侒侓侔侗侙侚侞侟侲侷侹侻侼侽侾俀俁俅俆俈俉俋俌俍俏俒俜俠俢俰俲俼俽俿倀倁倄倇倊倌倎倐倓倗倘倛倜倝倞倢倧倮倰倲倳倵偀偁偂偅偆偊偌偎偑偒偓偗偙偟偠偢偣偦偧偪偭偰偱倻傁傃傄傆傊傎傏傐"],
["8fb2a1","傒傓傔傖傛傜傞",4,"傪傯傰傹傺傽僀僃僄僇僌僎僐僓僔僘僜僝僟僢僤僦僨僩僯僱僶僺僾儃儆儇儈儋儌儍儎僲儐儗儙儛儜儝儞儣儧儨儬儭儯儱儳儴儵儸儹兂兊兏兓兕兗兘兟兤兦兾冃冄冋冎冘冝冡冣冭冸冺冼冾冿凂"],
["8fb3a1","凈减凑凒凓凕凘凞凢凥凮凲凳凴凷刁刂刅划刓刕刖刘刢刨刱刲刵刼剅剉剕剗剘剚剜剟剠剡剦剮剷剸剹劀劂劅劊劌劓劕劖劗劘劚劜劤劥劦劧劯劰劶劷劸劺劻劽勀勄勆勈勌勏勑勔勖勛勜勡勥勨勩勪勬勰勱勴勶勷匀匃匊匋"],
["8fb4a1","匌匑匓匘匛匜匞匟匥匧匨匩匫匬匭匰匲匵匼匽匾卂卌卋卙卛卡卣卥卬卭卲卹卾厃厇厈厎厓厔厙厝厡厤厪厫厯厲厴厵厷厸厺厽叀叅叏叒叓叕叚叝叞叠另叧叵吂吓吚吡吧吨吪启吱吴吵呃呄呇呍呏呞呢呤呦呧呩呫呭呮呴呿"],
["8fb5a1","咁咃咅咈咉咍咑咕咖咜咟咡咦咧咩咪咭咮咱咷咹咺咻咿哆哊响哎哠哪哬哯哶哼哾哿唀唁唅唈唉唌唍唎唕唪唫唲唵唶唻唼唽啁啇啉啊啍啐啑啘啚啛啞啠啡啤啦啿喁喂喆喈喎喏喑喒喓喔喗喣喤喭喲喿嗁嗃嗆嗉嗋嗌嗎嗑嗒"],
["8fb6a1","嗓嗗嗘嗛嗞嗢嗩嗶嗿嘅嘈嘊嘍",5,"嘙嘬嘰嘳嘵嘷嘹嘻嘼嘽嘿噀噁噃噄噆噉噋噍噏噔噞噠噡噢噣噦噩噭噯噱噲噵嚄嚅嚈嚋嚌嚕嚙嚚嚝嚞嚟嚦嚧嚨嚩嚫嚬嚭嚱嚳嚷嚾囅囉囊囋囏囐囌囍囙囜囝囟囡囤",4,"囱囫园"],
["8fb7a1","囶囷圁圂圇圊圌圑圕圚圛圝圠圢圣圤圥圩圪圬圮圯圳圴圽圾圿坅坆坌坍坒坢坥坧坨坫坭",4,"坳坴坵坷坹坺坻坼坾垁垃垌垔垗垙垚垜垝垞垟垡垕垧垨垩垬垸垽埇埈埌埏埕埝埞埤埦埧埩埭埰埵埶埸埽埾埿堃堄堈堉埡"],
["8fb8a1","堌堍堛堞堟堠堦堧堭堲堹堿塉塌塍塏塐塕塟塡塤塧塨塸塼塿墀墁墇墈墉墊墌墍墏墐墔墖墝墠墡墢墦墩墱墲壄墼壂壈壍壎壐壒壔壖壚壝壡壢壩壳夅夆夋夌夒夓夔虁夝夡夣夤夨夯夰夳夵夶夿奃奆奒奓奙奛奝奞奟奡奣奫奭"],
["8fb9a1","奯奲奵奶她奻奼妋妌妎妒妕妗妟妤妧妭妮妯妰妳妷妺妼姁姃姄姈姊姍姒姝姞姟姣姤姧姮姯姱姲姴姷娀娄娌娍娎娒娓娞娣娤娧娨娪娭娰婄婅婇婈婌婐婕婞婣婥婧婭婷婺婻婾媋媐媓媖媙媜媞媟媠媢媧媬媱媲媳媵媸媺媻媿"],
["8fbaa1","嫄嫆嫈嫏嫚嫜嫠嫥嫪嫮嫵嫶嫽嬀嬁嬈嬗嬴嬙嬛嬝嬡嬥嬭嬸孁孋孌孒孖孞孨孮孯孼孽孾孿宁宄宆宊宎宐宑宓宔宖宨宩宬宭宯宱宲宷宺宼寀寁寍寏寖",4,"寠寯寱寴寽尌尗尞尟尣尦尩尫尬尮尰尲尵尶屙屚屜屢屣屧屨屩"],
["8fbba1","屭屰屴屵屺屻屼屽岇岈岊岏岒岝岟岠岢岣岦岪岲岴岵岺峉峋峒峝峗峮峱峲峴崁崆崍崒崫崣崤崦崧崱崴崹崽崿嵂嵃嵆嵈嵕嵑嵙嵊嵟嵠嵡嵢嵤嵪嵭嵰嵹嵺嵾嵿嶁嶃嶈嶊嶒嶓嶔嶕嶙嶛嶟嶠嶧嶫嶰嶴嶸嶹巃巇巋巐巎巘巙巠巤"],
["8fbca1","巩巸巹帀帇帍帒帔帕帘帟帠帮帨帲帵帾幋幐幉幑幖幘幛幜幞幨幪",4,"幰庀庋庎庢庤庥庨庪庬庱庳庽庾庿廆廌廋廎廑廒廔廕廜廞廥廫异弆弇弈弎弙弜弝弡弢弣弤弨弫弬弮弰弴弶弻弽弿彀彄彅彇彍彐彔彘彛彠彣彤彧"],
["8fbda1","彯彲彴彵彸彺彽彾徉徍徏徖徜徝徢徧徫徤徬徯徰徱徸忄忇忈忉忋忐",4,"忞忡忢忨忩忪忬忭忮忯忲忳忶忺忼怇怊怍怓怔怗怘怚怟怤怭怳怵恀恇恈恉恌恑恔恖恗恝恡恧恱恾恿悂悆悈悊悎悑悓悕悘悝悞悢悤悥您悰悱悷"],
["8fbea1","悻悾惂惄惈惉惊惋惎惏惔惕惙惛惝惞惢惥惲惵惸惼惽愂愇愊愌愐",4,"愖愗愙愜愞愢愪愫愰愱愵愶愷愹慁慅慆慉慞慠慬慲慸慻慼慿憀憁憃憄憋憍憒憓憗憘憜憝憟憠憥憨憪憭憸憹憼懀懁懂懎懏懕懜懝懞懟懡懢懧懩懥"],
["8fbfa1","懬懭懯戁戃戄戇戓戕戜戠戢戣戧戩戫戹戽扂扃扄扆扌扐扑扒扔扖扚扜扤扭扯扳扺扽抍抎抏抐抦抨抳抶抷抺抾抿拄拎拕拖拚拪拲拴拼拽挃挄挊挋挍挐挓挖挘挩挪挭挵挶挹挼捁捂捃捄捆捊捋捎捒捓捔捘捛捥捦捬捭捱捴捵"],
["8fc0a1","捸捼捽捿掂掄掇掊掐掔掕掙掚掞掤掦掭掮掯掽揁揅揈揎揑揓揔揕揜揠揥揪揬揲揳揵揸揹搉搊搐搒搔搘搞搠搢搤搥搩搪搯搰搵搽搿摋摏摑摒摓摔摚摛摜摝摟摠摡摣摭摳摴摻摽撅撇撏撐撑撘撙撛撝撟撡撣撦撨撬撳撽撾撿"],
["8fc1a1","擄擉擊擋擌擎擐擑擕擗擤擥擩擪擭擰擵擷擻擿攁攄攈攉攊攏攓攔攖攙攛攞攟攢攦攩攮攱攺攼攽敃敇敉敐敒敔敟敠敧敫敺敽斁斅斊斒斕斘斝斠斣斦斮斲斳斴斿旂旈旉旎旐旔旖旘旟旰旲旴旵旹旾旿昀昄昈昉昍昑昒昕昖昝"],
["8fc2a1","昞昡昢昣昤昦昩昪昫昬昮昰昱昳昹昷晀晅晆晊晌晑晎晗晘晙晛晜晠晡曻晪晫晬晾晳晵晿晷晸晹晻暀晼暋暌暍暐暒暙暚暛暜暟暠暤暭暱暲暵暻暿曀曂曃曈曌曎曏曔曛曟曨曫曬曮曺朅朇朎朓朙朜朠朢朳朾杅杇杈杌杔杕杝"],
["8fc3a1","杦杬杮杴杶杻极构枎枏枑枓枖枘枙枛枰枱枲枵枻枼枽柹柀柂柃柅柈柉柒柗柙柜柡柦柰柲柶柷桒栔栙栝栟栨栧栬栭栯栰栱栳栻栿桄桅桊桌桕桗桘桛桫桮",4,"桵桹桺桻桼梂梄梆梈梖梘梚梜梡梣梥梩梪梮梲梻棅棈棌棏"],
["8fc4a1","棐棑棓棖棙棜棝棥棨棪棫棬棭棰棱棵棶棻棼棽椆椉椊椐椑椓椖椗椱椳椵椸椻楂楅楉楎楗楛楣楤楥楦楨楩楬楰楱楲楺楻楿榀榍榒榖榘榡榥榦榨榫榭榯榷榸榺榼槅槈槑槖槗槢槥槮槯槱槳槵槾樀樁樃樏樑樕樚樝樠樤樨樰樲"],
["8fc5a1","樴樷樻樾樿橅橆橉橊橎橐橑橒橕橖橛橤橧橪橱橳橾檁檃檆檇檉檋檑檛檝檞檟檥檫檯檰檱檴檽檾檿櫆櫉櫈櫌櫐櫔櫕櫖櫜櫝櫤櫧櫬櫰櫱櫲櫼櫽欂欃欆欇欉欏欐欑欗欛欞欤欨欫欬欯欵欶欻欿歆歊歍歒歖歘歝歠歧歫歮歰歵歽"],
["8fc6a1","歾殂殅殗殛殟殠殢殣殨殩殬殭殮殰殸殹殽殾毃毄毉毌毖毚毡毣毦毧毮毱毷毹毿氂氄氅氉氍氎氐氒氙氟氦氧氨氬氮氳氵氶氺氻氿汊汋汍汏汒汔汙汛汜汫汭汯汴汶汸汹汻沅沆沇沉沔沕沗沘沜沟沰沲沴泂泆泍泏泐泑泒泔泖"],
["8fc7a1","泚泜泠泧泩泫泬泮泲泴洄洇洊洎洏洑洓洚洦洧洨汧洮洯洱洹洼洿浗浞浟浡浥浧浯浰浼涂涇涑涒涔涖涗涘涪涬涴涷涹涽涿淄淈淊淎淏淖淛淝淟淠淢淥淩淯淰淴淶淼渀渄渞渢渧渲渶渹渻渼湄湅湈湉湋湏湑湒湓湔湗湜湝湞"],
["8fc8a1","湢湣湨湳湻湽溍溓溙溠溧溭溮溱溳溻溿滀滁滃滇滈滊滍滎滏滫滭滮滹滻滽漄漈漊漌漍漖漘漚漛漦漩漪漯漰漳漶漻漼漭潏潑潒潓潗潙潚潝潞潡潢潨潬潽潾澃澇澈澋澌澍澐澒澓澔澖澚澟澠澥澦澧澨澮澯澰澵澶澼濅濇濈濊"],
["8fc9a1","濚濞濨濩濰濵濹濼濽瀀瀅瀆瀇瀍瀗瀠瀣瀯瀴瀷瀹瀼灃灄灈灉灊灋灔灕灝灞灎灤灥灬灮灵灶灾炁炅炆炔",4,"炛炤炫炰炱炴炷烊烑烓烔烕烖烘烜烤烺焃",4,"焋焌焏焞焠焫焭焯焰焱焸煁煅煆煇煊煋煐煒煗煚煜煞煠"],
["8fcaa1","煨煹熀熅熇熌熒熚熛熠熢熯熰熲熳熺熿燀燁燄燋燌燓燖燙燚燜燸燾爀爇爈爉爓爗爚爝爟爤爫爯爴爸爹牁牂牃牅牎牏牐牓牕牖牚牜牞牠牣牨牫牮牯牱牷牸牻牼牿犄犉犍犎犓犛犨犭犮犱犴犾狁狇狉狌狕狖狘狟狥狳狴狺狻"],
["8fcba1","狾猂猄猅猇猋猍猒猓猘猙猞猢猤猧猨猬猱猲猵猺猻猽獃獍獐獒獖獘獝獞獟獠獦獧獩獫獬獮獯獱獷獹獼玀玁玃玅玆玎玐玓玕玗玘玜玞玟玠玢玥玦玪玫玭玵玷玹玼玽玿珅珆珉珋珌珏珒珓珖珙珝珡珣珦珧珩珴珵珷珹珺珻珽"],
["8fcca1","珿琀琁琄琇琊琑琚琛琤琦琨",9,"琹瑀瑃瑄瑆瑇瑋瑍瑑瑒瑗瑝瑢瑦瑧瑨瑫瑭瑮瑱瑲璀璁璅璆璇璉璏璐璑璒璘璙璚璜璟璠璡璣璦璨璩璪璫璮璯璱璲璵璹璻璿瓈瓉瓌瓐瓓瓘瓚瓛瓞瓟瓤瓨瓪瓫瓯瓴瓺瓻瓼瓿甆"],
["8fcda1","甒甖甗甠甡甤甧甩甪甯甶甹甽甾甿畀畃畇畈畎畐畒畗畞畟畡畯畱畹",5,"疁疅疐疒疓疕疙疜疢疤疴疺疿痀痁痄痆痌痎痏痗痜痟痠痡痤痧痬痮痯痱痹瘀瘂瘃瘄瘇瘈瘊瘌瘏瘒瘓瘕瘖瘙瘛瘜瘝瘞瘣瘥瘦瘩瘭瘲瘳瘵瘸瘹"],
["8fcea1","瘺瘼癊癀癁癃癄癅癉癋癕癙癟癤癥癭癮癯癱癴皁皅皌皍皕皛皜皝皟皠皢",6,"皪皭皽盁盅盉盋盌盎盔盙盠盦盨盬盰盱盶盹盼眀眆眊眎眒眔眕眗眙眚眜眢眨眭眮眯眴眵眶眹眽眾睂睅睆睊睍睎睏睒睖睗睜睞睟睠睢"],
["8fcfa1","睤睧睪睬睰睲睳睴睺睽瞀瞄瞌瞍瞔瞕瞖瞚瞟瞢瞧瞪瞮瞯瞱瞵瞾矃矉矑矒矕矙矞矟矠矤矦矪矬矰矱矴矸矻砅砆砉砍砎砑砝砡砢砣砭砮砰砵砷硃硄硇硈硌硎硒硜硞硠硡硣硤硨硪确硺硾碊碏碔碘碡碝碞碟碤碨碬碭碰碱碲碳"],
["8fd0a1","碻碽碿磇磈磉磌磎磒磓磕磖磤磛磟磠磡磦磪磲磳礀磶磷磺磻磿礆礌礐礚礜礞礟礠礥礧礩礭礱礴礵礻礽礿祄祅祆祊祋祏祑祔祘祛祜祧祩祫祲祹祻祼祾禋禌禑禓禔禕禖禘禛禜禡禨禩禫禯禱禴禸离秂秄秇秈秊秏秔秖秚秝秞"],
["8fd1a1","秠秢秥秪秫秭秱秸秼稂稃稇稉稊稌稑稕稛稞稡稧稫稭稯稰稴稵稸稹稺穄穅穇穈穌穕穖穙穜穝穟穠穥穧穪穭穵穸穾窀窂窅窆窊窋窐窑窔窞窠窣窬窳窵窹窻窼竆竉竌竎竑竛竨竩竫竬竱竴竻竽竾笇笔笟笣笧笩笪笫笭笮笯笰"],
["8fd2a1","笱笴笽笿筀筁筇筎筕筠筤筦筩筪筭筯筲筳筷箄箉箎箐箑箖箛箞箠箥箬箯箰箲箵箶箺箻箼箽篂篅篈篊篔篖篗篙篚篛篨篪篲篴篵篸篹篺篼篾簁簂簃簄簆簉簋簌簎簏簙簛簠簥簦簨簬簱簳簴簶簹簺籆籊籕籑籒籓籙",5],
["8fd3a1","籡籣籧籩籭籮籰籲籹籼籽粆粇粏粔粞粠粦粰粶粷粺粻粼粿糄糇糈糉糍糏糓糔糕糗糙糚糝糦糩糫糵紃紇紈紉紏紑紒紓紖紝紞紣紦紪紭紱紼紽紾絀絁絇絈絍絑絓絗絙絚絜絝絥絧絪絰絸絺絻絿綁綂綃綅綆綈綋綌綍綑綖綗綝"],
["8fd4a1","綞綦綧綪綳綶綷綹緂",4,"緌緍緎緗緙縀緢緥緦緪緫緭緱緵緶緹緺縈縐縑縕縗縜縝縠縧縨縬縭縯縳縶縿繄繅繇繎繐繒繘繟繡繢繥繫繮繯繳繸繾纁纆纇纊纍纑纕纘纚纝纞缼缻缽缾缿罃罄罇罏罒罓罛罜罝罡罣罤罥罦罭"],
["8fd5a1","罱罽罾罿羀羋羍羏羐羑羖羗羜羡羢羦羪羭羴羼羿翀翃翈翎翏翛翟翣翥翨翬翮翯翲翺翽翾翿耇耈耊耍耎耏耑耓耔耖耝耞耟耠耤耦耬耮耰耴耵耷耹耺耼耾聀聄聠聤聦聭聱聵肁肈肎肜肞肦肧肫肸肹胈胍胏胒胔胕胗胘胠胭胮"],
["8fd6a1","胰胲胳胶胹胺胾脃脋脖脗脘脜脞脠脤脧脬脰脵脺脼腅腇腊腌腒腗腠腡腧腨腩腭腯腷膁膐膄膅膆膋膎膖膘膛膞膢膮膲膴膻臋臃臅臊臎臏臕臗臛臝臞臡臤臫臬臰臱臲臵臶臸臹臽臿舀舃舏舓舔舙舚舝舡舢舨舲舴舺艃艄艅艆"],
["8fd7a1","艋艎艏艑艖艜艠艣艧艭艴艻艽艿芀芁芃芄芇芉芊芎芑芔芖芘芚芛芠芡芣芤芧芨芩芪芮芰芲芴芷芺芼芾芿苆苐苕苚苠苢苤苨苪苭苯苶苷苽苾茀茁茇茈茊茋荔茛茝茞茟茡茢茬茭茮茰茳茷茺茼茽荂荃荄荇荍荎荑荕荖荗荰荸"],
["8fd8a1","荽荿莀莂莄莆莍莒莔莕莘莙莛莜莝莦莧莩莬莾莿菀菇菉菏菐菑菔菝荓菨菪菶菸菹菼萁萆萊萏萑萕萙莭萯萹葅葇葈葊葍葏葑葒葖葘葙葚葜葠葤葥葧葪葰葳葴葶葸葼葽蒁蒅蒒蒓蒕蒞蒦蒨蒩蒪蒯蒱蒴蒺蒽蒾蓀蓂蓇蓈蓌蓏蓓"],
["8fd9a1","蓜蓧蓪蓯蓰蓱蓲蓷蔲蓺蓻蓽蔂蔃蔇蔌蔎蔐蔜蔞蔢蔣蔤蔥蔧蔪蔫蔯蔳蔴蔶蔿蕆蕏",4,"蕖蕙蕜",6,"蕤蕫蕯蕹蕺蕻蕽蕿薁薅薆薉薋薌薏薓薘薝薟薠薢薥薧薴薶薷薸薼薽薾薿藂藇藊藋藎薭藘藚藟藠藦藨藭藳藶藼"],
["8fdaa1","藿蘀蘄蘅蘍蘎蘐蘑蘒蘘蘙蘛蘞蘡蘧蘩蘶蘸蘺蘼蘽虀虂虆虒虓虖虗虘虙虝虠",4,"虩虬虯虵虶虷虺蚍蚑蚖蚘蚚蚜蚡蚦蚧蚨蚭蚱蚳蚴蚵蚷蚸蚹蚿蛀蛁蛃蛅蛑蛒蛕蛗蛚蛜蛠蛣蛥蛧蚈蛺蛼蛽蜄蜅蜇蜋蜎蜏蜐蜓蜔蜙蜞蜟蜡蜣"],
["8fdba1","蜨蜮蜯蜱蜲蜹蜺蜼蜽蜾蝀蝃蝅蝍蝘蝝蝡蝤蝥蝯蝱蝲蝻螃",6,"螋螌螐螓螕螗螘螙螞螠螣螧螬螭螮螱螵螾螿蟁蟈蟉蟊蟎蟕蟖蟙蟚蟜蟟蟢蟣蟤蟪蟫蟭蟱蟳蟸蟺蟿蠁蠃蠆蠉蠊蠋蠐蠙蠒蠓蠔蠘蠚蠛蠜蠞蠟蠨蠭蠮蠰蠲蠵"],
["8fdca1","蠺蠼衁衃衅衈衉衊衋衎衑衕衖衘衚衜衟衠衤衩衱衹衻袀袘袚袛袜袟袠袨袪袺袽袾裀裊",4,"裑裒裓裛裞裧裯裰裱裵裷褁褆褍褎褏褕褖褘褙褚褜褠褦褧褨褰褱褲褵褹褺褾襀襂襅襆襉襏襒襗襚襛襜襡襢襣襫襮襰襳襵襺"],
["8fdda1","襻襼襽覉覍覐覔覕覛覜覟覠覥覰覴覵覶覷覼觔",4,"觥觩觫觭觱觳觶觹觽觿訄訅訇訏訑訒訔訕訞訠訢訤訦訫訬訯訵訷訽訾詀詃詅詇詉詍詎詓詖詗詘詜詝詡詥詧詵詶詷詹詺詻詾詿誀誃誆誋誏誐誒誖誗誙誟誧誩誮誯誳"],
["8fdea1","誶誷誻誾諃諆諈諉諊諑諓諔諕諗諝諟諬諰諴諵諶諼諿謅謆謋謑謜謞謟謊謭謰謷謼譂",4,"譈譒譓譔譙譍譞譣譭譶譸譹譼譾讁讄讅讋讍讏讔讕讜讞讟谸谹谽谾豅豇豉豋豏豑豓豔豗豘豛豝豙豣豤豦豨豩豭豳豵豶豻豾貆"],
["8fdfa1","貇貋貐貒貓貙貛貜貤貹貺賅賆賉賋賏賖賕賙賝賡賨賬賯賰賲賵賷賸賾賿贁贃贉贒贗贛赥赩赬赮赿趂趄趈趍趐趑趕趞趟趠趦趫趬趯趲趵趷趹趻跀跅跆跇跈跊跎跑跔跕跗跙跤跥跧跬跰趼跱跲跴跽踁踄踅踆踋踑踔踖踠踡踢"],
["8fe0a1","踣踦踧踱踳踶踷踸踹踽蹀蹁蹋蹍蹎蹏蹔蹛蹜蹝蹞蹡蹢蹩蹬蹭蹯蹰蹱蹹蹺蹻躂躃躉躐躒躕躚躛躝躞躢躧躩躭躮躳躵躺躻軀軁軃軄軇軏軑軔軜軨軮軰軱軷軹軺軭輀輂輇輈輏輐輖輗輘輞輠輡輣輥輧輨輬輭輮輴輵輶輷輺轀轁"],
["8fe1a1","轃轇轏轑",4,"轘轝轞轥辝辠辡辤辥辦辵辶辸达迀迁迆迊迋迍运迒迓迕迠迣迤迨迮迱迵迶迻迾适逄逈逌逘逛逨逩逯逪逬逭逳逴逷逿遃遄遌遛遝遢遦遧遬遰遴遹邅邈邋邌邎邐邕邗邘邙邛邠邡邢邥邰邲邳邴邶邽郌邾郃"],
["8fe2a1","郄郅郇郈郕郗郘郙郜郝郟郥郒郶郫郯郰郴郾郿鄀鄄鄅鄆鄈鄍鄐鄔鄖鄗鄘鄚鄜鄞鄠鄥鄢鄣鄧鄩鄮鄯鄱鄴鄶鄷鄹鄺鄼鄽酃酇酈酏酓酗酙酚酛酡酤酧酭酴酹酺酻醁醃醅醆醊醎醑醓醔醕醘醞醡醦醨醬醭醮醰醱醲醳醶醻醼醽醿"],
["8fe3a1","釂釃釅釓釔釗釙釚釞釤釥釩釪釬",5,"釷釹釻釽鈀鈁鈄鈅鈆鈇鈉鈊鈌鈐鈒鈓鈖鈘鈜鈝鈣鈤鈥鈦鈨鈮鈯鈰鈳鈵鈶鈸鈹鈺鈼鈾鉀鉂鉃鉆鉇鉊鉍鉎鉏鉑鉘鉙鉜鉝鉠鉡鉥鉧鉨鉩鉮鉯鉰鉵",4,"鉻鉼鉽鉿銈銉銊銍銎銒銗"],
["8fe4a1","銙銟銠銤銥銧銨銫銯銲銶銸銺銻銼銽銿",4,"鋅鋆鋇鋈鋋鋌鋍鋎鋐鋓鋕鋗鋘鋙鋜鋝鋟鋠鋡鋣鋥鋧鋨鋬鋮鋰鋹鋻鋿錀錂錈錍錑錔錕錜錝錞錟錡錤錥錧錩錪錳錴錶錷鍇鍈鍉鍐鍑鍒鍕鍗鍘鍚鍞鍤鍥鍧鍩鍪鍭鍯鍰鍱鍳鍴鍶"],
["8fe5a1","鍺鍽鍿鎀鎁鎂鎈鎊鎋鎍鎏鎒鎕鎘鎛鎞鎡鎣鎤鎦鎨鎫鎴鎵鎶鎺鎩鏁鏄鏅鏆鏇鏉",4,"鏓鏙鏜鏞鏟鏢鏦鏧鏹鏷鏸鏺鏻鏽鐁鐂鐄鐈鐉鐍鐎鐏鐕鐖鐗鐟鐮鐯鐱鐲鐳鐴鐻鐿鐽鑃鑅鑈鑊鑌鑕鑙鑜鑟鑡鑣鑨鑫鑭鑮鑯鑱鑲钄钃镸镹"],
["8fe6a1","镾閄閈閌閍閎閝閞閟閡閦閩閫閬閴閶閺閽閿闆闈闉闋闐闑闒闓闙闚闝闞闟闠闤闦阝阞阢阤阥阦阬阱阳阷阸阹阺阼阽陁陒陔陖陗陘陡陮陴陻陼陾陿隁隂隃隄隉隑隖隚隝隟隤隥隦隩隮隯隳隺雊雒嶲雘雚雝雞雟雩雯雱雺霂"],
["8fe7a1","霃霅霉霚霛霝霡霢霣霨霱霳靁靃靊靎靏靕靗靘靚靛靣靧靪靮靳靶靷靸靻靽靿鞀鞉鞕鞖鞗鞙鞚鞞鞟鞢鞬鞮鞱鞲鞵鞶鞸鞹鞺鞼鞾鞿韁韄韅韇韉韊韌韍韎韐韑韔韗韘韙韝韞韠韛韡韤韯韱韴韷韸韺頇頊頙頍頎頔頖頜頞頠頣頦"],
["8fe8a1","頫頮頯頰頲頳頵頥頾顄顇顊顑顒顓顖顗顙顚顢顣顥顦顪顬颫颭颮颰颴颷颸颺颻颿飂飅飈飌飡飣飥飦飧飪飳飶餂餇餈餑餕餖餗餚餛餜餟餢餦餧餫餱",4,"餹餺餻餼饀饁饆饇饈饍饎饔饘饙饛饜饞饟饠馛馝馟馦馰馱馲馵"],
["8fe9a1","馹馺馽馿駃駉駓駔駙駚駜駞駧駪駫駬駰駴駵駹駽駾騂騃騄騋騌騐騑騖騞騠騢騣騤騧騭騮騳騵騶騸驇驁驄驊驋驌驎驑驔驖驝骪骬骮骯骲骴骵骶骹骻骾骿髁髃髆髈髎髐髒髕髖髗髛髜髠髤髥髧髩髬髲髳髵髹髺髽髿",4],
["8feaa1","鬄鬅鬈鬉鬋鬌鬍鬎鬐鬒鬖鬙鬛鬜鬠鬦鬫鬭鬳鬴鬵鬷鬹鬺鬽魈魋魌魕魖魗魛魞魡魣魥魦魨魪",4,"魳魵魷魸魹魿鮀鮄鮅鮆鮇鮉鮊鮋鮍鮏鮐鮔鮚鮝鮞鮦鮧鮩鮬鮰鮱鮲鮷鮸鮻鮼鮾鮿鯁鯇鯈鯎鯐鯗鯘鯝鯟鯥鯧鯪鯫鯯鯳鯷鯸"],
["8feba1","鯹鯺鯽鯿鰀鰂鰋鰏鰑鰖鰘鰙鰚鰜鰞鰢鰣鰦",4,"鰱鰵鰶鰷鰽鱁鱃鱄鱅鱉鱊鱎鱏鱐鱓鱔鱖鱘鱛鱝鱞鱟鱣鱩鱪鱜鱫鱨鱮鱰鱲鱵鱷鱻鳦鳲鳷鳹鴋鴂鴑鴗鴘鴜鴝鴞鴯鴰鴲鴳鴴鴺鴼鵅鴽鵂鵃鵇鵊鵓鵔鵟鵣鵢鵥鵩鵪鵫鵰鵶鵷鵻"],
["8feca1","鵼鵾鶃鶄鶆鶊鶍鶎鶒鶓鶕鶖鶗鶘鶡鶪鶬鶮鶱鶵鶹鶼鶿鷃鷇鷉鷊鷔鷕鷖鷗鷚鷞鷟鷠鷥鷧鷩鷫鷮鷰鷳鷴鷾鸊鸂鸇鸎鸐鸑鸒鸕鸖鸙鸜鸝鹺鹻鹼麀麂麃麄麅麇麎麏麖麘麛麞麤麨麬麮麯麰麳麴麵黆黈黋黕黟黤黧黬黭黮黰黱黲黵"],
["8feda1","黸黿鼂鼃鼉鼏鼐鼑鼒鼔鼖鼗鼙鼚鼛鼟鼢鼦鼪鼫鼯鼱鼲鼴鼷鼹鼺鼼鼽鼿齁齃",4,"齓齕齖齗齘齚齝齞齨齩齭",4,"齳齵齺齽龏龐龑龒龔龖龗龞龡龢龣龥"]
]

},{}],71:[function(require,module,exports){
module.exports={"uChars":[128,165,169,178,184,216,226,235,238,244,248,251,253,258,276,284,300,325,329,334,364,463,465,467,469,471,473,475,477,506,594,610,712,716,730,930,938,962,970,1026,1104,1106,8209,8215,8218,8222,8231,8241,8244,8246,8252,8365,8452,8454,8458,8471,8482,8556,8570,8596,8602,8713,8720,8722,8726,8731,8737,8740,8742,8748,8751,8760,8766,8777,8781,8787,8802,8808,8816,8854,8858,8870,8896,8979,9322,9372,9548,9588,9616,9622,9634,9652,9662,9672,9676,9680,9702,9735,9738,9793,9795,11906,11909,11913,11917,11928,11944,11947,11951,11956,11960,11964,11979,12284,12292,12312,12319,12330,12351,12436,12447,12535,12543,12586,12842,12850,12964,13200,13215,13218,13253,13263,13267,13270,13384,13428,13727,13839,13851,14617,14703,14801,14816,14964,15183,15471,15585,16471,16736,17208,17325,17330,17374,17623,17997,18018,18212,18218,18301,18318,18760,18811,18814,18820,18823,18844,18848,18872,19576,19620,19738,19887,40870,59244,59336,59367,59413,59417,59423,59431,59437,59443,59452,59460,59478,59493,63789,63866,63894,63976,63986,64016,64018,64021,64025,64034,64037,64042,65074,65093,65107,65112,65127,65132,65375,65510,65536],"gbChars":[0,36,38,45,50,81,89,95,96,100,103,104,105,109,126,133,148,172,175,179,208,306,307,308,309,310,311,312,313,341,428,443,544,545,558,741,742,749,750,805,819,820,7922,7924,7925,7927,7934,7943,7944,7945,7950,8062,8148,8149,8152,8164,8174,8236,8240,8262,8264,8374,8380,8381,8384,8388,8390,8392,8393,8394,8396,8401,8406,8416,8419,8424,8437,8439,8445,8482,8485,8496,8521,8603,8936,8946,9046,9050,9063,9066,9076,9092,9100,9108,9111,9113,9131,9162,9164,9218,9219,11329,11331,11334,11336,11346,11361,11363,11366,11370,11372,11375,11389,11682,11686,11687,11692,11694,11714,11716,11723,11725,11730,11736,11982,11989,12102,12336,12348,12350,12384,12393,12395,12397,12510,12553,12851,12962,12973,13738,13823,13919,13933,14080,14298,14585,14698,15583,15847,16318,16434,16438,16481,16729,17102,17122,17315,17320,17402,17418,17859,17909,17911,17915,17916,17936,17939,17961,18664,18703,18814,18962,19043,33469,33470,33471,33484,33485,33490,33497,33501,33505,33513,33520,33536,33550,37845,37921,37948,38029,38038,38064,38065,38066,38069,38075,38076,38078,39108,39109,39113,39114,39115,39116,39265,39394,189000]}
},{}],72:[function(require,module,exports){
module.exports=[
["a140","",62],
["a180","",32],
["a240","",62],
["a280","",32],
["a2ab","",5],
["a2e3","€"],
["a2ef",""],
["a2fd",""],
["a340","",62],
["a380","",31,"　"],
["a440","",62],
["a480","",32],
["a4f4","",10],
["a540","",62],
["a580","",32],
["a5f7","",7],
["a640","",62],
["a680","",32],
["a6b9","",7],
["a6d9","",6],
["a6ec",""],
["a6f3",""],
["a6f6","",8],
["a740","",62],
["a780","",32],
["a7c2","",14],
["a7f2","",12],
["a896","",10],
["a8bc","ḿ"],
["a8bf","ǹ"],
["a8c1",""],
["a8ea","",20],
["a958",""],
["a95b",""],
["a95d",""],
["a989","〾⿰",11],
["a997","",12],
["a9f0","",14],
["aaa1","",93],
["aba1","",93],
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["9980","凰凵凾刄刋刔刎刧刪刮刳刹剏剄剋剌剞剔剪剴剩剳剿剽劍劔劒剱劈劑辨辧劬劭劼劵勁勍勗勞勣勦飭勠勳勵勸勹匆匈甸匍匐匏匕匚匣匯匱匳匸區卆卅丗卉卍凖卞卩卮夘卻卷厂厖厠厦厥厮厰厶參簒雙叟曼燮叮叨叭叺吁吽呀听吭吼吮吶吩吝呎咏呵咎呟呱呷呰咒呻咀呶咄咐咆哇咢咸咥咬哄哈咨"],
["9a40","咫哂咤咾咼哘哥哦唏唔哽哮哭哺哢唹啀啣啌售啜啅啖啗唸唳啝喙喀咯喊喟啻啾喘喞單啼喃喩喇喨嗚嗅嗟嗄嗜嗤嗔嘔嗷嘖嗾嗽嘛嗹噎噐營嘴嘶嘲嘸"],
["9a80","噫噤嘯噬噪嚆嚀嚊嚠嚔嚏嚥嚮嚶嚴囂嚼囁囃囀囈囎囑囓囗囮囹圀囿圄圉圈國圍圓團圖嗇圜圦圷圸坎圻址坏坩埀垈坡坿垉垓垠垳垤垪垰埃埆埔埒埓堊埖埣堋堙堝塲堡塢塋塰毀塒堽塹墅墹墟墫墺壞墻墸墮壅壓壑壗壙壘壥壜壤壟壯壺壹壻壼壽夂夊夐夛梦夥夬夭夲夸夾竒奕奐奎奚奘奢奠奧奬奩"],
["9b40","奸妁妝佞侫妣妲姆姨姜妍姙姚娥娟娑娜娉娚婀婬婉娵娶婢婪媚媼媾嫋嫂媽嫣嫗嫦嫩嫖嫺嫻嬌嬋嬖嬲嫐嬪嬶嬾孃孅孀孑孕孚孛孥孩孰孳孵學斈孺宀"],
["9b80","它宦宸寃寇寉寔寐寤實寢寞寥寫寰寶寳尅將專對尓尠尢尨尸尹屁屆屎屓屐屏孱屬屮乢屶屹岌岑岔妛岫岻岶岼岷峅岾峇峙峩峽峺峭嶌峪崋崕崗嵜崟崛崑崔崢崚崙崘嵌嵒嵎嵋嵬嵳嵶嶇嶄嶂嶢嶝嶬嶮嶽嶐嶷嶼巉巍巓巒巖巛巫已巵帋帚帙帑帛帶帷幄幃幀幎幗幔幟幢幤幇幵并幺麼广庠廁廂廈廐廏"],
["9c40","廖廣廝廚廛廢廡廨廩廬廱廳廰廴廸廾弃弉彝彜弋弑弖弩弭弸彁彈彌彎弯彑彖彗彙彡彭彳彷徃徂彿徊很徑徇從徙徘徠徨徭徼忖忻忤忸忱忝悳忿怡恠"],
["9c80","怙怐怩怎怱怛怕怫怦怏怺恚恁恪恷恟恊恆恍恣恃恤恂恬恫恙悁悍惧悃悚悄悛悖悗悒悧悋惡悸惠惓悴忰悽惆悵惘慍愕愆惶惷愀惴惺愃愡惻惱愍愎慇愾愨愧慊愿愼愬愴愽慂慄慳慷慘慙慚慫慴慯慥慱慟慝慓慵憙憖憇憬憔憚憊憑憫憮懌懊應懷懈懃懆憺懋罹懍懦懣懶懺懴懿懽懼懾戀戈戉戍戌戔戛"],
["9d40","戞戡截戮戰戲戳扁扎扞扣扛扠扨扼抂抉找抒抓抖拔抃抔拗拑抻拏拿拆擔拈拜拌拊拂拇抛拉挌拮拱挧挂挈拯拵捐挾捍搜捏掖掎掀掫捶掣掏掉掟掵捫"],
["9d80","捩掾揩揀揆揣揉插揶揄搖搴搆搓搦搶攝搗搨搏摧摯摶摎攪撕撓撥撩撈撼據擒擅擇撻擘擂擱擧舉擠擡抬擣擯攬擶擴擲擺攀擽攘攜攅攤攣攫攴攵攷收攸畋效敖敕敍敘敞敝敲數斂斃變斛斟斫斷旃旆旁旄旌旒旛旙无旡旱杲昊昃旻杳昵昶昴昜晏晄晉晁晞晝晤晧晨晟晢晰暃暈暎暉暄暘暝曁暹曉暾暼"],
["9e40","曄暸曖曚曠昿曦曩曰曵曷朏朖朞朦朧霸朮朿朶杁朸朷杆杞杠杙杣杤枉杰枩杼杪枌枋枦枡枅枷柯枴柬枳柩枸柤柞柝柢柮枹柎柆柧檜栞框栩桀桍栲桎"],
["9e80","梳栫桙档桷桿梟梏梭梔條梛梃檮梹桴梵梠梺椏梍桾椁棊椈棘椢椦棡椌棍棔棧棕椶椒椄棗棣椥棹棠棯椨椪椚椣椡棆楹楷楜楸楫楔楾楮椹楴椽楙椰楡楞楝榁楪榲榮槐榿槁槓榾槎寨槊槝榻槃榧樮榑榠榜榕榴槞槨樂樛槿權槹槲槧樅榱樞槭樔槫樊樒櫁樣樓橄樌橲樶橸橇橢橙橦橈樸樢檐檍檠檄檢檣"],
["9f40","檗蘗檻櫃櫂檸檳檬櫞櫑櫟檪櫚櫪櫻欅蘖櫺欒欖鬱欟欸欷盜欹飮歇歃歉歐歙歔歛歟歡歸歹歿殀殄殃殍殘殕殞殤殪殫殯殲殱殳殷殼毆毋毓毟毬毫毳毯"],
["9f80","麾氈氓气氛氤氣汞汕汢汪沂沍沚沁沛汾汨汳沒沐泄泱泓沽泗泅泝沮沱沾沺泛泯泙泪洟衍洶洫洽洸洙洵洳洒洌浣涓浤浚浹浙涎涕濤涅淹渕渊涵淇淦涸淆淬淞淌淨淒淅淺淙淤淕淪淮渭湮渮渙湲湟渾渣湫渫湶湍渟湃渺湎渤滿渝游溂溪溘滉溷滓溽溯滄溲滔滕溏溥滂溟潁漑灌滬滸滾漿滲漱滯漲滌"],
["e040","漾漓滷澆潺潸澁澀潯潛濳潭澂潼潘澎澑濂潦澳澣澡澤澹濆澪濟濕濬濔濘濱濮濛瀉瀋濺瀑瀁瀏濾瀛瀚潴瀝瀘瀟瀰瀾瀲灑灣炙炒炯烱炬炸炳炮烟烋烝"],
["e080","烙焉烽焜焙煥煕熈煦煢煌煖煬熏燻熄熕熨熬燗熹熾燒燉燔燎燠燬燧燵燼燹燿爍爐爛爨爭爬爰爲爻爼爿牀牆牋牘牴牾犂犁犇犒犖犢犧犹犲狃狆狄狎狒狢狠狡狹狷倏猗猊猜猖猝猴猯猩猥猾獎獏默獗獪獨獰獸獵獻獺珈玳珎玻珀珥珮珞璢琅瑯琥珸琲琺瑕琿瑟瑙瑁瑜瑩瑰瑣瑪瑶瑾璋璞璧瓊瓏瓔珱"],
["e140","瓠瓣瓧瓩瓮瓲瓰瓱瓸瓷甄甃甅甌甎甍甕甓甞甦甬甼畄畍畊畉畛畆畚畩畤畧畫畭畸當疆疇畴疊疉疂疔疚疝疥疣痂疳痃疵疽疸疼疱痍痊痒痙痣痞痾痿"],
["e180","痼瘁痰痺痲痳瘋瘍瘉瘟瘧瘠瘡瘢瘤瘴瘰瘻癇癈癆癜癘癡癢癨癩癪癧癬癰癲癶癸發皀皃皈皋皎皖皓皙皚皰皴皸皹皺盂盍盖盒盞盡盥盧盪蘯盻眈眇眄眩眤眞眥眦眛眷眸睇睚睨睫睛睥睿睾睹瞎瞋瞑瞠瞞瞰瞶瞹瞿瞼瞽瞻矇矍矗矚矜矣矮矼砌砒礦砠礪硅碎硴碆硼碚碌碣碵碪碯磑磆磋磔碾碼磅磊磬"],
["e240","磧磚磽磴礇礒礑礙礬礫祀祠祗祟祚祕祓祺祿禊禝禧齋禪禮禳禹禺秉秕秧秬秡秣稈稍稘稙稠稟禀稱稻稾稷穃穗穉穡穢穩龝穰穹穽窈窗窕窘窖窩竈窰"],
["e280","窶竅竄窿邃竇竊竍竏竕竓站竚竝竡竢竦竭竰笂笏笊笆笳笘笙笞笵笨笶筐筺笄筍笋筌筅筵筥筴筧筰筱筬筮箝箘箟箍箜箚箋箒箏筝箙篋篁篌篏箴篆篝篩簑簔篦篥籠簀簇簓篳篷簗簍篶簣簧簪簟簷簫簽籌籃籔籏籀籐籘籟籤籖籥籬籵粃粐粤粭粢粫粡粨粳粲粱粮粹粽糀糅糂糘糒糜糢鬻糯糲糴糶糺紆"],
["e340","紂紜紕紊絅絋紮紲紿紵絆絳絖絎絲絨絮絏絣經綉絛綏絽綛綺綮綣綵緇綽綫總綢綯緜綸綟綰緘緝緤緞緻緲緡縅縊縣縡縒縱縟縉縋縢繆繦縻縵縹繃縷"],
["e380","縲縺繧繝繖繞繙繚繹繪繩繼繻纃緕繽辮繿纈纉續纒纐纓纔纖纎纛纜缸缺罅罌罍罎罐网罕罔罘罟罠罨罩罧罸羂羆羃羈羇羌羔羞羝羚羣羯羲羹羮羶羸譱翅翆翊翕翔翡翦翩翳翹飜耆耄耋耒耘耙耜耡耨耿耻聊聆聒聘聚聟聢聨聳聲聰聶聹聽聿肄肆肅肛肓肚肭冐肬胛胥胙胝胄胚胖脉胯胱脛脩脣脯腋"],
["e440","隋腆脾腓腑胼腱腮腥腦腴膃膈膊膀膂膠膕膤膣腟膓膩膰膵膾膸膽臀臂膺臉臍臑臙臘臈臚臟臠臧臺臻臾舁舂舅與舊舍舐舖舩舫舸舳艀艙艘艝艚艟艤"],
["e480","艢艨艪艫舮艱艷艸艾芍芒芫芟芻芬苡苣苟苒苴苳苺莓范苻苹苞茆苜茉苙茵茴茖茲茱荀茹荐荅茯茫茗茘莅莚莪莟莢莖茣莎莇莊荼莵荳荵莠莉莨菴萓菫菎菽萃菘萋菁菷萇菠菲萍萢萠莽萸蔆菻葭萪萼蕚蒄葷葫蒭葮蒂葩葆萬葯葹萵蓊葢蒹蒿蒟蓙蓍蒻蓚蓐蓁蓆蓖蒡蔡蓿蓴蔗蔘蔬蔟蔕蔔蓼蕀蕣蕘蕈"],
["e540","蕁蘂蕋蕕薀薤薈薑薊薨蕭薔薛藪薇薜蕷蕾薐藉薺藏薹藐藕藝藥藜藹蘊蘓蘋藾藺蘆蘢蘚蘰蘿虍乕虔號虧虱蚓蚣蚩蚪蚋蚌蚶蚯蛄蛆蚰蛉蠣蚫蛔蛞蛩蛬"],
["e580","蛟蛛蛯蜒蜆蜈蜀蜃蛻蜑蜉蜍蛹蜊蜴蜿蜷蜻蜥蜩蜚蝠蝟蝸蝌蝎蝴蝗蝨蝮蝙蝓蝣蝪蠅螢螟螂螯蟋螽蟀蟐雖螫蟄螳蟇蟆螻蟯蟲蟠蠏蠍蟾蟶蟷蠎蟒蠑蠖蠕蠢蠡蠱蠶蠹蠧蠻衄衂衒衙衞衢衫袁衾袞衵衽袵衲袂袗袒袮袙袢袍袤袰袿袱裃裄裔裘裙裝裹褂裼裴裨裲褄褌褊褓襃褞褥褪褫襁襄褻褶褸襌褝襠襞"],
["e640","襦襤襭襪襯襴襷襾覃覈覊覓覘覡覩覦覬覯覲覺覽覿觀觚觜觝觧觴觸訃訖訐訌訛訝訥訶詁詛詒詆詈詼詭詬詢誅誂誄誨誡誑誥誦誚誣諄諍諂諚諫諳諧"],
["e680","諤諱謔諠諢諷諞諛謌謇謚諡謖謐謗謠謳鞫謦謫謾謨譁譌譏譎證譖譛譚譫譟譬譯譴譽讀讌讎讒讓讖讙讚谺豁谿豈豌豎豐豕豢豬豸豺貂貉貅貊貍貎貔豼貘戝貭貪貽貲貳貮貶賈賁賤賣賚賽賺賻贄贅贊贇贏贍贐齎贓賍贔贖赧赭赱赳趁趙跂趾趺跏跚跖跌跛跋跪跫跟跣跼踈踉跿踝踞踐踟蹂踵踰踴蹊"],
["e740","蹇蹉蹌蹐蹈蹙蹤蹠踪蹣蹕蹶蹲蹼躁躇躅躄躋躊躓躑躔躙躪躡躬躰軆躱躾軅軈軋軛軣軼軻軫軾輊輅輕輒輙輓輜輟輛輌輦輳輻輹轅轂輾轌轉轆轎轗轜"],
["e780","轢轣轤辜辟辣辭辯辷迚迥迢迪迯邇迴逅迹迺逑逕逡逍逞逖逋逧逶逵逹迸遏遐遑遒逎遉逾遖遘遞遨遯遶隨遲邂遽邁邀邊邉邏邨邯邱邵郢郤扈郛鄂鄒鄙鄲鄰酊酖酘酣酥酩酳酲醋醉醂醢醫醯醪醵醴醺釀釁釉釋釐釖釟釡釛釼釵釶鈞釿鈔鈬鈕鈑鉞鉗鉅鉉鉤鉈銕鈿鉋鉐銜銖銓銛鉚鋏銹銷鋩錏鋺鍄錮"],
["e840","錙錢錚錣錺錵錻鍜鍠鍼鍮鍖鎰鎬鎭鎔鎹鏖鏗鏨鏥鏘鏃鏝鏐鏈鏤鐚鐔鐓鐃鐇鐐鐶鐫鐵鐡鐺鑁鑒鑄鑛鑠鑢鑞鑪鈩鑰鑵鑷鑽鑚鑼鑾钁鑿閂閇閊閔閖閘閙"],
["e880","閠閨閧閭閼閻閹閾闊濶闃闍闌闕闔闖關闡闥闢阡阨阮阯陂陌陏陋陷陜陞陝陟陦陲陬隍隘隕隗險隧隱隲隰隴隶隸隹雎雋雉雍襍雜霍雕雹霄霆霈霓霎霑霏霖霙霤霪霰霹霽霾靄靆靈靂靉靜靠靤靦靨勒靫靱靹鞅靼鞁靺鞆鞋鞏鞐鞜鞨鞦鞣鞳鞴韃韆韈韋韜韭齏韲竟韶韵頏頌頸頤頡頷頽顆顏顋顫顯顰"],
["e940","顱顴顳颪颯颱颶飄飃飆飩飫餃餉餒餔餘餡餝餞餤餠餬餮餽餾饂饉饅饐饋饑饒饌饕馗馘馥馭馮馼駟駛駝駘駑駭駮駱駲駻駸騁騏騅駢騙騫騷驅驂驀驃"],
["e980","騾驕驍驛驗驟驢驥驤驩驫驪骭骰骼髀髏髑髓體髞髟髢髣髦髯髫髮髴髱髷髻鬆鬘鬚鬟鬢鬣鬥鬧鬨鬩鬪鬮鬯鬲魄魃魏魍魎魑魘魴鮓鮃鮑鮖鮗鮟鮠鮨鮴鯀鯊鮹鯆鯏鯑鯒鯣鯢鯤鯔鯡鰺鯲鯱鯰鰕鰔鰉鰓鰌鰆鰈鰒鰊鰄鰮鰛鰥鰤鰡鰰鱇鰲鱆鰾鱚鱠鱧鱶鱸鳧鳬鳰鴉鴈鳫鴃鴆鴪鴦鶯鴣鴟鵄鴕鴒鵁鴿鴾鵆鵈"],
["ea40","鵝鵞鵤鵑鵐鵙鵲鶉鶇鶫鵯鵺鶚鶤鶩鶲鷄鷁鶻鶸鶺鷆鷏鷂鷙鷓鷸鷦鷭鷯鷽鸚鸛鸞鹵鹹鹽麁麈麋麌麒麕麑麝麥麩麸麪麭靡黌黎黏黐黔黜點黝黠黥黨黯"],
["ea80","黴黶黷黹黻黼黽鼇鼈皷鼕鼡鼬鼾齊齒齔齣齟齠齡齦齧齬齪齷齲齶龕龜龠堯槇遙瑤凜熙"],
["ed40","纊褜鍈銈蓜俉炻昱棈鋹曻彅丨仡仼伀伃伹佖侒侊侚侔俍偀倢俿倞偆偰偂傔僴僘兊兤冝冾凬刕劜劦勀勛匀匇匤卲厓厲叝﨎咜咊咩哿喆坙坥垬埈埇﨏"],
["ed80","塚增墲夋奓奛奝奣妤妺孖寀甯寘寬尞岦岺峵崧嵓﨑嵂嵭嶸嶹巐弡弴彧德忞恝悅悊惞惕愠惲愑愷愰憘戓抦揵摠撝擎敎昀昕昻昉昮昞昤晥晗晙晴晳暙暠暲暿曺朎朗杦枻桒柀栁桄棏﨓楨﨔榘槢樰橫橆橳橾櫢櫤毖氿汜沆汯泚洄涇浯涖涬淏淸淲淼渹湜渧渼溿澈澵濵瀅瀇瀨炅炫焏焄煜煆煇凞燁燾犱"],
["ee40","犾猤猪獷玽珉珖珣珒琇珵琦琪琩琮瑢璉璟甁畯皂皜皞皛皦益睆劯砡硎硤硺礰礼神祥禔福禛竑竧靖竫箞精絈絜綷綠緖繒罇羡羽茁荢荿菇菶葈蒴蕓蕙"],
["ee80","蕫﨟薰蘒﨡蠇裵訒訷詹誧誾諟諸諶譓譿賰賴贒赶﨣軏﨤逸遧郞都鄕鄧釚釗釞釭釮釤釥鈆鈐鈊鈺鉀鈼鉎鉙鉑鈹鉧銧鉷鉸鋧鋗鋙鋐﨧鋕鋠鋓錥錡鋻﨨錞鋿錝錂鍰鍗鎤鏆鏞鏸鐱鑅鑈閒隆﨩隝隯霳霻靃靍靏靑靕顗顥飯飼餧館馞驎髙髜魵魲鮏鮱鮻鰀鵰鵫鶴鸙黑"],
["eeef","ⅰ",9,"￢￤＇＂"],
["f040","",62],
["f080","",124],
["f140","",62],
["f180","",124],
["f240","",62],
["f280","",124],
["f340","",62],
["f380","",124],
["f440","",62],
["f480","",124],
["f540","",62],
["f580","",124],
["f640","",62],
["f680","",124],
["f740","",62],
["f780","",124],
["f840","",62],
["f880","",124],
["f940",""],
["fa40","ⅰ",9,"Ⅰ",9,"￢￤＇＂㈱№℡∵纊褜鍈銈蓜俉炻昱棈鋹曻彅丨仡仼伀伃伹佖侒侊侚侔俍偀倢俿倞偆偰偂傔僴僘兊"],
["fa80","兤冝冾凬刕劜劦勀勛匀匇匤卲厓厲叝﨎咜咊咩哿喆坙坥垬埈埇﨏塚增墲夋奓奛奝奣妤妺孖寀甯寘寬尞岦岺峵崧嵓﨑嵂嵭嶸嶹巐弡弴彧德忞恝悅悊惞惕愠惲愑愷愰憘戓抦揵摠撝擎敎昀昕昻昉昮昞昤晥晗晙晴晳暙暠暲暿曺朎朗杦枻桒柀栁桄棏﨓楨﨔榘槢樰橫橆橳橾櫢櫤毖氿汜沆汯泚洄涇浯"],
["fb40","涖涬淏淸淲淼渹湜渧渼溿澈澵濵瀅瀇瀨炅炫焏焄煜煆煇凞燁燾犱犾猤猪獷玽珉珖珣珒琇珵琦琪琩琮瑢璉璟甁畯皂皜皞皛皦益睆劯砡硎硤硺礰礼神"],
["fb80","祥禔福禛竑竧靖竫箞精絈絜綷綠緖繒罇羡羽茁荢荿菇菶葈蒴蕓蕙蕫﨟薰蘒﨡蠇裵訒訷詹誧誾諟諸諶譓譿賰賴贒赶﨣軏﨤逸遧郞都鄕鄧釚釗釞釭釮釤釥鈆鈐鈊鈺鉀鈼鉎鉙鉑鈹鉧銧鉷鉸鋧鋗鋙鋐﨧鋕鋠鋓錥錡鋻﨨錞鋿錝錂鍰鍗鎤鏆鏞鏸鐱鑅鑈閒隆﨩隝隯霳霻靃靍靏靑靕顗顥飯飼餧館馞驎髙"],
["fc40","髜魵魲鮏鮱鮻鰀鵰鵫鶴鸙黑"]
]

},{}],74:[function(require,module,exports){
"use strict";
var Buffer = require("safer-buffer").Buffer;

// Note: UTF16-LE (or UCS2) codec is Node.js native. See encodings/internal.js

// == UTF16-BE codec. ==========================================================

exports.utf16be = Utf16BECodec;
function Utf16BECodec() {
}

Utf16BECodec.prototype.encoder = Utf16BEEncoder;
Utf16BECodec.prototype.decoder = Utf16BEDecoder;
Utf16BECodec.prototype.bomAware = true;


// -- Encoding

function Utf16BEEncoder() {
}

Utf16BEEncoder.prototype.write = function(str) {
    var buf = Buffer.from(str, 'ucs2');
    for (var i = 0; i < buf.length; i += 2) {
        var tmp = buf[i]; buf[i] = buf[i+1]; buf[i+1] = tmp;
    }
    return buf;
}

Utf16BEEncoder.prototype.end = function() {
}


// -- Decoding

function Utf16BEDecoder() {
    this.overflowByte = -1;
}

Utf16BEDecoder.prototype.write = function(buf) {
    if (buf.length == 0)
        return '';

    var buf2 = Buffer.alloc(buf.length + 1),
        i = 0, j = 0;

    if (this.overflowByte !== -1) {
        buf2[0] = buf[0];
        buf2[1] = this.overflowByte;
        i = 1; j = 2;
    }

    for (; i < buf.length-1; i += 2, j+= 2) {
        buf2[j] = buf[i+1];
        buf2[j+1] = buf[i];
    }

    this.overflowByte = (i == buf.length-1) ? buf[buf.length-1] : -1;

    return buf2.slice(0, j).toString('ucs2');
}

Utf16BEDecoder.prototype.end = function() {
    this.overflowByte = -1;
}


// == UTF-16 codec =============================================================
// Decoder chooses automatically from UTF-16LE and UTF-16BE using BOM and space-based heuristic.
// Defaults to UTF-16LE, as it's prevalent and default in Node.
// http://en.wikipedia.org/wiki/UTF-16 and http://encoding.spec.whatwg.org/#utf-16le
// Decoder default can be changed: iconv.decode(buf, 'utf16', {defaultEncoding: 'utf-16be'});

// Encoder uses UTF-16LE and prepends BOM (which can be overridden with addBOM: false).

exports.utf16 = Utf16Codec;
function Utf16Codec(codecOptions, iconv) {
    this.iconv = iconv;
}

Utf16Codec.prototype.encoder = Utf16Encoder;
Utf16Codec.prototype.decoder = Utf16Decoder;


// -- Encoding (pass-through)

function Utf16Encoder(options, codec) {
    options = options || {};
    if (options.addBOM === undefined)
        options.addBOM = true;
    this.encoder = codec.iconv.getEncoder('utf-16le', options);
}

Utf16Encoder.prototype.write = function(str) {
    return this.encoder.write(str);
}

Utf16Encoder.prototype.end = function() {
    return this.encoder.end();
}


// -- Decoding

function Utf16Decoder(options, codec) {
    this.decoder = null;
    this.initialBufs = [];
    this.initialBufsLen = 0;

    this.options = options || {};
    this.iconv = codec.iconv;
}

Utf16Decoder.prototype.write = function(buf) {
    if (!this.decoder) {
        // Codec is not chosen yet. Accumulate initial bytes.
        this.initialBufs.push(buf);
        this.initialBufsLen += buf.length;
        
        if (this.initialBufsLen < 16) // We need more bytes to use space heuristic (see below)
            return '';

        // We have enough bytes -> detect endianness.
        var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
        this.decoder = this.iconv.getDecoder(encoding, this.options);

        var resStr = '';
        for (var i = 0; i < this.initialBufs.length; i++)
            resStr += this.decoder.write(this.initialBufs[i]);

        this.initialBufs.length = this.initialBufsLen = 0;
        return resStr;
    }

    return this.decoder.write(buf);
}

Utf16Decoder.prototype.end = function() {
    if (!this.decoder) {
        var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
        this.decoder = this.iconv.getDecoder(encoding, this.options);

        var resStr = '';
        for (var i = 0; i < this.initialBufs.length; i++)
            resStr += this.decoder.write(this.initialBufs[i]);

        var trail = this.decoder.end();
        if (trail)
            resStr += trail;

        this.initialBufs.length = this.initialBufsLen = 0;
        return resStr;
    }
    return this.decoder.end();
}

function detectEncoding(bufs, defaultEncoding) {
    var b = [];
    var charsProcessed = 0;
    var asciiCharsLE = 0, asciiCharsBE = 0; // Number of ASCII chars when decoded as LE or BE.

    outer_loop:
    for (var i = 0; i < bufs.length; i++) {
        var buf = bufs[i];
        for (var j = 0; j < buf.length; j++) {
            b.push(buf[j]);
            if (b.length === 2) {
                if (charsProcessed === 0) {
                    // Check BOM first.
                    if (b[0] === 0xFF && b[1] === 0xFE) return 'utf-16le';
                    if (b[0] === 0xFE && b[1] === 0xFF) return 'utf-16be';
                }

                if (b[0] === 0 && b[1] !== 0) asciiCharsBE++;
                if (b[0] !== 0 && b[1] === 0) asciiCharsLE++;

                b.length = 0;
                charsProcessed++;

                if (charsProcessed >= 100) {
                    break outer_loop;
                }
            }
        }
    }

    // Make decisions.
    // Most of the time, the content has ASCII chars (U+00**), but the opposite (U+**00) is uncommon.
    // So, we count ASCII as if it was LE or BE, and decide from that.
    if (asciiCharsBE > asciiCharsLE) return 'utf-16be';
    if (asciiCharsBE < asciiCharsLE) return 'utf-16le';

    // Couldn't decide (likely all zeros or not enough data).
    return defaultEncoding || 'utf-16le';
}



},{"safer-buffer":174}],75:[function(require,module,exports){
'use strict';

var Buffer = require('safer-buffer').Buffer;

// == UTF32-LE/BE codec. ==========================================================

exports._utf32 = Utf32Codec;

function Utf32Codec(codecOptions, iconv) {
    this.iconv = iconv;
    this.bomAware = true;
    this.isLE = codecOptions.isLE;
}

exports.utf32le = { type: '_utf32', isLE: true };
exports.utf32be = { type: '_utf32', isLE: false };

// Aliases
exports.ucs4le = 'utf32le';
exports.ucs4be = 'utf32be';

Utf32Codec.prototype.encoder = Utf32Encoder;
Utf32Codec.prototype.decoder = Utf32Decoder;

// -- Encoding

function Utf32Encoder(options, codec) {
    this.isLE = codec.isLE;
    this.highSurrogate = 0;
}

Utf32Encoder.prototype.write = function(str) {
    var src = Buffer.from(str, 'ucs2');
    var dst = Buffer.alloc(src.length * 2);
    var write32 = this.isLE ? dst.writeUInt32LE : dst.writeUInt32BE;
    var offset = 0;

    for (var i = 0; i < src.length; i += 2) {
        var code = src.readUInt16LE(i);
        var isHighSurrogate = (0xD800 <= code && code < 0xDC00);
        var isLowSurrogate = (0xDC00 <= code && code < 0xE000);

        if (this.highSurrogate) {
            if (isHighSurrogate || !isLowSurrogate) {
                // There shouldn't be two high surrogates in a row, nor a high surrogate which isn't followed by a low
                // surrogate. If this happens, keep the pending high surrogate as a stand-alone semi-invalid character
                // (technically wrong, but expected by some applications, like Windows file names).
                write32.call(dst, this.highSurrogate, offset);
                offset += 4;
            }
            else {
                // Create 32-bit value from high and low surrogates;
                var codepoint = (((this.highSurrogate - 0xD800) << 10) | (code - 0xDC00)) + 0x10000;

                write32.call(dst, codepoint, offset);
                offset += 4;
                this.highSurrogate = 0;

                continue;
            }
        }

        if (isHighSurrogate)
            this.highSurrogate = code;
        else {
            // Even if the current character is a low surrogate, with no previous high surrogate, we'll
            // encode it as a semi-invalid stand-alone character for the same reasons expressed above for
            // unpaired high surrogates.
            write32.call(dst, code, offset);
            offset += 4;
            this.highSurrogate = 0;
        }
    }

    if (offset < dst.length)
        dst = dst.slice(0, offset);

    return dst;
};

Utf32Encoder.prototype.end = function() {
    // Treat any leftover high surrogate as a semi-valid independent character.
    if (!this.highSurrogate)
        return;

    var buf = Buffer.alloc(4);

    if (this.isLE)
        buf.writeUInt32LE(this.highSurrogate, 0);
    else
        buf.writeUInt32BE(this.highSurrogate, 0);

    this.highSurrogate = 0;

    return buf;
};

// -- Decoding

function Utf32Decoder(options, codec) {
    this.isLE = codec.isLE;
    this.badChar = codec.iconv.defaultCharUnicode.charCodeAt(0);
    this.overflow = [];
}

Utf32Decoder.prototype.write = function(src) {
    if (src.length === 0)
        return '';

    var i = 0;
    var codepoint = 0;
    var dst = Buffer.alloc(src.length + 4);
    var offset = 0;
    var isLE = this.isLE;
    var overflow = this.overflow;
    var badChar = this.badChar;

    if (overflow.length > 0) {
        for (; i < src.length && overflow.length < 4; i++)
            overflow.push(src[i]);
        
        if (overflow.length === 4) {
            // NOTE: codepoint is a signed int32 and can be negative.
            // NOTE: We copied this block from below to help V8 optimize it (it works with array, not buffer).
            if (isLE) {
                codepoint = overflow[i] | (overflow[i+1] << 8) | (overflow[i+2] << 16) | (overflow[i+3] << 24);
            } else {
                codepoint = overflow[i+3] | (overflow[i+2] << 8) | (overflow[i+1] << 16) | (overflow[i] << 24);
            }
            overflow.length = 0;

            offset = _writeCodepoint(dst, offset, codepoint, badChar);
        }
    }

    // Main loop. Should be as optimized as possible.
    for (; i < src.length - 3; i += 4) {
        // NOTE: codepoint is a signed int32 and can be negative.
        if (isLE) {
            codepoint = src[i] | (src[i+1] << 8) | (src[i+2] << 16) | (src[i+3] << 24);
        } else {
            codepoint = src[i+3] | (src[i+2] << 8) | (src[i+1] << 16) | (src[i] << 24);
        }
        offset = _writeCodepoint(dst, offset, codepoint, badChar);
    }

    // Keep overflowing bytes.
    for (; i < src.length; i++) {
        overflow.push(src[i]);
    }

    return dst.slice(0, offset).toString('ucs2');
};

function _writeCodepoint(dst, offset, codepoint, badChar) {
    // NOTE: codepoint is signed int32 and can be negative. We keep it that way to help V8 with optimizations.
    if (codepoint < 0 || codepoint > 0x10FFFF) {
        // Not a valid Unicode codepoint
        codepoint = badChar;
    } 

    // Ephemeral Planes: Write high surrogate.
    if (codepoint >= 0x10000) {
        codepoint -= 0x10000;

        var high = 0xD800 | (codepoint >> 10);
        dst[offset++] = high & 0xff;
        dst[offset++] = high >> 8;

        // Low surrogate is written below.
        var codepoint = 0xDC00 | (codepoint & 0x3FF);
    }

    // Write BMP char or low surrogate.
    dst[offset++] = codepoint & 0xff;
    dst[offset++] = codepoint >> 8;

    return offset;
};

Utf32Decoder.prototype.end = function() {
    this.overflow.length = 0;
};

// == UTF-32 Auto codec =============================================================
// Decoder chooses automatically from UTF-32LE and UTF-32BE using BOM and space-based heuristic.
// Defaults to UTF-32LE. http://en.wikipedia.org/wiki/UTF-32
// Encoder/decoder default can be changed: iconv.decode(buf, 'utf32', {defaultEncoding: 'utf-32be'});

// Encoder prepends BOM (which can be overridden with (addBOM: false}).

exports.utf32 = Utf32AutoCodec;
exports.ucs4 = 'utf32';

function Utf32AutoCodec(options, iconv) {
    this.iconv = iconv;
}

Utf32AutoCodec.prototype.encoder = Utf32AutoEncoder;
Utf32AutoCodec.prototype.decoder = Utf32AutoDecoder;

// -- Encoding

function Utf32AutoEncoder(options, codec) {
    options = options || {};

    if (options.addBOM === undefined)
        options.addBOM = true;

    this.encoder = codec.iconv.getEncoder(options.defaultEncoding || 'utf-32le', options);
}

Utf32AutoEncoder.prototype.write = function(str) {
    return this.encoder.write(str);
};

Utf32AutoEncoder.prototype.end = function() {
    return this.encoder.end();
};

// -- Decoding

function Utf32AutoDecoder(options, codec) {
    this.decoder = null;
    this.initialBufs = [];
    this.initialBufsLen = 0;
    this.options = options || {};
    this.iconv = codec.iconv;
}

Utf32AutoDecoder.prototype.write = function(buf) {
    if (!this.decoder) { 
        // Codec is not chosen yet. Accumulate initial bytes.
        this.initialBufs.push(buf);
        this.initialBufsLen += buf.length;

        if (this.initialBufsLen < 32) // We need more bytes to use space heuristic (see below)
            return '';

        // We have enough bytes -> detect endianness.
        var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
        this.decoder = this.iconv.getDecoder(encoding, this.options);

        var resStr = '';
        for (var i = 0; i < this.initialBufs.length; i++)
            resStr += this.decoder.write(this.initialBufs[i]);

        this.initialBufs.length = this.initialBufsLen = 0;
        return resStr;
    }

    return this.decoder.write(buf);
};

Utf32AutoDecoder.prototype.end = function() {
    if (!this.decoder) {
        var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
        this.decoder = this.iconv.getDecoder(encoding, this.options);

        var resStr = '';
        for (var i = 0; i < this.initialBufs.length; i++)
            resStr += this.decoder.write(this.initialBufs[i]);

        var trail = this.decoder.end();
        if (trail)
            resStr += trail;

        this.initialBufs.length = this.initialBufsLen = 0;
        return resStr;
    }

    return this.decoder.end();
};

function detectEncoding(bufs, defaultEncoding) {
    var b = [];
    var charsProcessed = 0;
    var invalidLE = 0, invalidBE = 0;   // Number of invalid chars when decoded as LE or BE.
    var bmpCharsLE = 0, bmpCharsBE = 0; // Number of BMP chars when decoded as LE or BE.

    outer_loop:
    for (var i = 0; i < bufs.length; i++) {
        var buf = bufs[i];
        for (var j = 0; j < buf.length; j++) {
            b.push(buf[j]);
            if (b.length === 4) {
                if (charsProcessed === 0) {
                    // Check BOM first.
                    if (b[0] === 0xFF && b[1] === 0xFE && b[2] === 0 && b[3] === 0) {
                        return 'utf-32le';
                    }
                    if (b[0] === 0 && b[1] === 0 && b[2] === 0xFE && b[3] === 0xFF) {
                        return 'utf-32be';
                    }
                }

                if (b[0] !== 0 || b[1] > 0x10) invalidBE++;
                if (b[3] !== 0 || b[2] > 0x10) invalidLE++;

                if (b[0] === 0 && b[1] === 0 && (b[2] !== 0 || b[3] !== 0)) bmpCharsBE++;
                if ((b[0] !== 0 || b[1] !== 0) && b[2] === 0 && b[3] === 0) bmpCharsLE++;

                b.length = 0;
                charsProcessed++;

                if (charsProcessed >= 100) {
                    break outer_loop;
                }
            }
        }
    }

    // Make decisions.
    if (bmpCharsBE - invalidBE > bmpCharsLE - invalidLE)  return 'utf-32be';
    if (bmpCharsBE - invalidBE < bmpCharsLE - invalidLE)  return 'utf-32le';

    // Couldn't decide (likely all zeros or not enough data).
    return defaultEncoding || 'utf-32le';
}

},{"safer-buffer":174}],76:[function(require,module,exports){
"use strict";
var Buffer = require("safer-buffer").Buffer;

// UTF-7 codec, according to https://tools.ietf.org/html/rfc2152
// See also below a UTF-7-IMAP codec, according to http://tools.ietf.org/html/rfc3501#section-5.1.3

exports.utf7 = Utf7Codec;
exports.unicode11utf7 = 'utf7'; // Alias UNICODE-1-1-UTF-7
function Utf7Codec(codecOptions, iconv) {
    this.iconv = iconv;
};

Utf7Codec.prototype.encoder = Utf7Encoder;
Utf7Codec.prototype.decoder = Utf7Decoder;
Utf7Codec.prototype.bomAware = true;


// -- Encoding

var nonDirectChars = /[^A-Za-z0-9'\(\),-\.\/:\? \n\r\t]+/g;

function Utf7Encoder(options, codec) {
    this.iconv = codec.iconv;
}

Utf7Encoder.prototype.write = function(str) {
    // Naive implementation.
    // Non-direct chars are encoded as "+<base64>-"; single "+" char is encoded as "+-".
    return Buffer.from(str.replace(nonDirectChars, function(chunk) {
        return "+" + (chunk === '+' ? '' : 
            this.iconv.encode(chunk, 'utf16-be').toString('base64').replace(/=+$/, '')) 
            + "-";
    }.bind(this)));
}

Utf7Encoder.prototype.end = function() {
}


// -- Decoding

function Utf7Decoder(options, codec) {
    this.iconv = codec.iconv;
    this.inBase64 = false;
    this.base64Accum = '';
}

var base64Regex = /[A-Za-z0-9\/+]/;
var base64Chars = [];
for (var i = 0; i < 256; i++)
    base64Chars[i] = base64Regex.test(String.fromCharCode(i));

var plusChar = '+'.charCodeAt(0), 
    minusChar = '-'.charCodeAt(0),
    andChar = '&'.charCodeAt(0);

Utf7Decoder.prototype.write = function(buf) {
    var res = "", lastI = 0,
        inBase64 = this.inBase64,
        base64Accum = this.base64Accum;

    // The decoder is more involved as we must handle chunks in stream.

    for (var i = 0; i < buf.length; i++) {
        if (!inBase64) { // We're in direct mode.
            // Write direct chars until '+'
            if (buf[i] == plusChar) {
                res += this.iconv.decode(buf.slice(lastI, i), "ascii"); // Write direct chars.
                lastI = i+1;
                inBase64 = true;
            }
        } else { // We decode base64.
            if (!base64Chars[buf[i]]) { // Base64 ended.
                if (i == lastI && buf[i] == minusChar) {// "+-" -> "+"
                    res += "+";
                } else {
                    var b64str = base64Accum + this.iconv.decode(buf.slice(lastI, i), "ascii");
                    res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
                }

                if (buf[i] != minusChar) // Minus is absorbed after base64.
                    i--;

                lastI = i+1;
                inBase64 = false;
                base64Accum = '';
            }
        }
    }

    if (!inBase64) {
        res += this.iconv.decode(buf.slice(lastI), "ascii"); // Write direct chars.
    } else {
        var b64str = base64Accum + this.iconv.decode(buf.slice(lastI), "ascii");

        var canBeDecoded = b64str.length - (b64str.length % 8); // Minimal chunk: 2 quads -> 2x3 bytes -> 3 chars.
        base64Accum = b64str.slice(canBeDecoded); // The rest will be decoded in future.
        b64str = b64str.slice(0, canBeDecoded);

        res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
    }

    this.inBase64 = inBase64;
    this.base64Accum = base64Accum;

    return res;
}

Utf7Decoder.prototype.end = function() {
    var res = "";
    if (this.inBase64 && this.base64Accum.length > 0)
        res = this.iconv.decode(Buffer.from(this.base64Accum, 'base64'), "utf16-be");

    this.inBase64 = false;
    this.base64Accum = '';
    return res;
}


// UTF-7-IMAP codec.
// RFC3501 Sec. 5.1.3 Modified UTF-7 (http://tools.ietf.org/html/rfc3501#section-5.1.3)
// Differences:
//  * Base64 part is started by "&" instead of "+"
//  * Direct characters are 0x20-0x7E, except "&" (0x26)
//  * In Base64, "," is used instead of "/"
//  * Base64 must not be used to represent direct characters.
//  * No implicit shift back from Base64 (should always end with '-')
//  * String must end in non-shifted position.
//  * "-&" while in base64 is not allowed.


exports.utf7imap = Utf7IMAPCodec;
function Utf7IMAPCodec(codecOptions, iconv) {
    this.iconv = iconv;
};

Utf7IMAPCodec.prototype.encoder = Utf7IMAPEncoder;
Utf7IMAPCodec.prototype.decoder = Utf7IMAPDecoder;
Utf7IMAPCodec.prototype.bomAware = true;


// -- Encoding

function Utf7IMAPEncoder(options, codec) {
    this.iconv = codec.iconv;
    this.inBase64 = false;
    this.base64Accum = Buffer.alloc(6);
    this.base64AccumIdx = 0;
}

Utf7IMAPEncoder.prototype.write = function(str) {
    var inBase64 = this.inBase64,
        base64Accum = this.base64Accum,
        base64AccumIdx = this.base64AccumIdx,
        buf = Buffer.alloc(str.length*5 + 10), bufIdx = 0;

    for (var i = 0; i < str.length; i++) {
        var uChar = str.charCodeAt(i);
        if (0x20 <= uChar && uChar <= 0x7E) { // Direct character or '&'.
            if (inBase64) {
                if (base64AccumIdx > 0) {
                    bufIdx += buf.write(base64Accum.slice(0, base64AccumIdx).toString('base64').replace(/\//g, ',').replace(/=+$/, ''), bufIdx);
                    base64AccumIdx = 0;
                }

                buf[bufIdx++] = minusChar; // Write '-', then go to direct mode.
                inBase64 = false;
            }

            if (!inBase64) {
                buf[bufIdx++] = uChar; // Write direct character

                if (uChar === andChar)  // Ampersand -> '&-'
                    buf[bufIdx++] = minusChar;
            }

        } else { // Non-direct character
            if (!inBase64) {
                buf[bufIdx++] = andChar; // Write '&', then go to base64 mode.
                inBase64 = true;
            }
            if (inBase64) {
                base64Accum[base64AccumIdx++] = uChar >> 8;
                base64Accum[base64AccumIdx++] = uChar & 0xFF;

                if (base64AccumIdx == base64Accum.length) {
                    bufIdx += buf.write(base64Accum.toString('base64').replace(/\//g, ','), bufIdx);
                    base64AccumIdx = 0;
                }
            }
        }
    }

    this.inBase64 = inBase64;
    this.base64AccumIdx = base64AccumIdx;

    return buf.slice(0, bufIdx);
}

Utf7IMAPEncoder.prototype.end = function() {
    var buf = Buffer.alloc(10), bufIdx = 0;
    if (this.inBase64) {
        if (this.base64AccumIdx > 0) {
            bufIdx += buf.write(this.base64Accum.slice(0, this.base64AccumIdx).toString('base64').replace(/\//g, ',').replace(/=+$/, ''), bufIdx);
            this.base64AccumIdx = 0;
        }

        buf[bufIdx++] = minusChar; // Write '-', then go to direct mode.
        this.inBase64 = false;
    }

    return buf.slice(0, bufIdx);
}


// -- Decoding

function Utf7IMAPDecoder(options, codec) {
    this.iconv = codec.iconv;
    this.inBase64 = false;
    this.base64Accum = '';
}

var base64IMAPChars = base64Chars.slice();
base64IMAPChars[','.charCodeAt(0)] = true;

Utf7IMAPDecoder.prototype.write = function(buf) {
    var res = "", lastI = 0,
        inBase64 = this.inBase64,
        base64Accum = this.base64Accum;

    // The decoder is more involved as we must handle chunks in stream.
    // It is forgiving, closer to standard UTF-7 (for example, '-' is optional at the end).

    for (var i = 0; i < buf.length; i++) {
        if (!inBase64) { // We're in direct mode.
            // Write direct chars until '&'
            if (buf[i] == andChar) {
                res += this.iconv.decode(buf.slice(lastI, i), "ascii"); // Write direct chars.
                lastI = i+1;
                inBase64 = true;
            }
        } else { // We decode base64.
            if (!base64IMAPChars[buf[i]]) { // Base64 ended.
                if (i == lastI && buf[i] == minusChar) { // "&-" -> "&"
                    res += "&";
                } else {
                    var b64str = base64Accum + this.iconv.decode(buf.slice(lastI, i), "ascii").replace(/,/g, '/');
                    res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
                }

                if (buf[i] != minusChar) // Minus may be absorbed after base64.
                    i--;

                lastI = i+1;
                inBase64 = false;
                base64Accum = '';
            }
        }
    }

    if (!inBase64) {
        res += this.iconv.decode(buf.slice(lastI), "ascii"); // Write direct chars.
    } else {
        var b64str = base64Accum + this.iconv.decode(buf.slice(lastI), "ascii").replace(/,/g, '/');

        var canBeDecoded = b64str.length - (b64str.length % 8); // Minimal chunk: 2 quads -> 2x3 bytes -> 3 chars.
        base64Accum = b64str.slice(canBeDecoded); // The rest will be decoded in future.
        b64str = b64str.slice(0, canBeDecoded);

        res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
    }

    this.inBase64 = inBase64;
    this.base64Accum = base64Accum;

    return res;
}

Utf7IMAPDecoder.prototype.end = function() {
    var res = "";
    if (this.inBase64 && this.base64Accum.length > 0)
        res = this.iconv.decode(Buffer.from(this.base64Accum, 'base64'), "utf16-be");

    this.inBase64 = false;
    this.base64Accum = '';
    return res;
}



},{"safer-buffer":174}],77:[function(require,module,exports){
"use strict";

var BOMChar = '\uFEFF';

exports.PrependBOM = PrependBOMWrapper
function PrependBOMWrapper(encoder, options) {
    this.encoder = encoder;
    this.addBOM = true;
}

PrependBOMWrapper.prototype.write = function(str) {
    if (this.addBOM) {
        str = BOMChar + str;
        this.addBOM = false;
    }

    return this.encoder.write(str);
}

PrependBOMWrapper.prototype.end = function() {
    return this.encoder.end();
}


//------------------------------------------------------------------------------

exports.StripBOM = StripBOMWrapper;
function StripBOMWrapper(decoder, options) {
    this.decoder = decoder;
    this.pass = false;
    this.options = options || {};
}

StripBOMWrapper.prototype.write = function(buf) {
    var res = this.decoder.write(buf);
    if (this.pass || !res)
        return res;

    if (res[0] === BOMChar) {
        res = res.slice(1);
        if (typeof this.options.stripBOM === 'function')
            this.options.stripBOM();
    }

    this.pass = true;
    return res;
}

StripBOMWrapper.prototype.end = function() {
    return this.decoder.end();
}


},{}],78:[function(require,module,exports){
"use strict";

var Buffer = require("safer-buffer").Buffer;

var bomHandling = require("./bom-handling"),
    iconv = module.exports;

// All codecs and aliases are kept here, keyed by encoding name/alias.
// They are lazy loaded in `iconv.getCodec` from `encodings/index.js`.
iconv.encodings = null;

// Characters emitted in case of error.
iconv.defaultCharUnicode = '�';
iconv.defaultCharSingleByte = '?';

// Public API.
iconv.encode = function encode(str, encoding, options) {
    str = "" + (str || ""); // Ensure string.

    var encoder = iconv.getEncoder(encoding, options);

    var res = encoder.write(str);
    var trail = encoder.end();
    
    return (trail && trail.length > 0) ? Buffer.concat([res, trail]) : res;
}

iconv.decode = function decode(buf, encoding, options) {
    if (typeof buf === 'string') {
        if (!iconv.skipDecodeWarning) {
            console.error('Iconv-lite warning: decode()-ing strings is deprecated. Refer to https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding');
            iconv.skipDecodeWarning = true;
        }

        buf = Buffer.from("" + (buf || ""), "binary"); // Ensure buffer.
    }

    var decoder = iconv.getDecoder(encoding, options);

    var res = decoder.write(buf);
    var trail = decoder.end();

    return trail ? (res + trail) : res;
}

iconv.encodingExists = function encodingExists(enc) {
    try {
        iconv.getCodec(enc);
        return true;
    } catch (e) {
        return false;
    }
}

// Legacy aliases to convert functions
iconv.toEncoding = iconv.encode;
iconv.fromEncoding = iconv.decode;

// Search for a codec in iconv.encodings. Cache codec data in iconv._codecDataCache.
iconv._codecDataCache = {};
iconv.getCodec = function getCodec(encoding) {
    if (!iconv.encodings)
        iconv.encodings = require("../encodings"); // Lazy load all encoding definitions.
    
    // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
    var enc = iconv._canonicalizeEncoding(encoding);

    // Traverse iconv.encodings to find actual codec.
    var codecOptions = {};
    while (true) {
        var codec = iconv._codecDataCache[enc];
        if (codec)
            return codec;

        var codecDef = iconv.encodings[enc];

        switch (typeof codecDef) {
            case "string": // Direct alias to other encoding.
                enc = codecDef;
                break;

            case "object": // Alias with options. Can be layered.
                for (var key in codecDef)
                    codecOptions[key] = codecDef[key];

                if (!codecOptions.encodingName)
                    codecOptions.encodingName = enc;
                
                enc = codecDef.type;
                break;

            case "function": // Codec itself.
                if (!codecOptions.encodingName)
                    codecOptions.encodingName = enc;

                // The codec function must load all tables and return object with .encoder and .decoder methods.
                // It'll be called only once (for each different options object).
                codec = new codecDef(codecOptions, iconv);

                iconv._codecDataCache[codecOptions.encodingName] = codec; // Save it to be reused later.
                return codec;

            default:
                throw new Error("Encoding not recognized: '" + encoding + "' (searched as: '"+enc+"')");
        }
    }
}

iconv._canonicalizeEncoding = function(encoding) {
    // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
    return (''+encoding).toLowerCase().replace(/:\d{4}$|[^0-9a-z]/g, "");
}

iconv.getEncoder = function getEncoder(encoding, options) {
    var codec = iconv.getCodec(encoding),
        encoder = new codec.encoder(options, codec);

    if (codec.bomAware && options && options.addBOM)
        encoder = new bomHandling.PrependBOM(encoder, options);

    return encoder;
}

iconv.getDecoder = function getDecoder(encoding, options) {
    var codec = iconv.getCodec(encoding),
        decoder = new codec.decoder(options, codec);

    if (codec.bomAware && !(options && options.stripBOM === false))
        decoder = new bomHandling.StripBOM(decoder, options);

    return decoder;
}

// Streaming API
// NOTE: Streaming API naturally depends on 'stream' module from Node.js. Unfortunately in browser environments this module can add
// up to 100Kb to the output bundle. To avoid unnecessary code bloat, we don't enable Streaming API in browser by default.
// If you would like to enable it explicitly, please add the following code to your app:
// > iconv.enableStreamingAPI(require('stream'));
iconv.enableStreamingAPI = function enableStreamingAPI(stream_module) {
    if (iconv.supportsStreams)
        return;

    // Dependency-inject stream module to create IconvLite stream classes.
    var streams = require("./streams")(stream_module);

    // Not public API yet, but expose the stream classes.
    iconv.IconvLiteEncoderStream = streams.IconvLiteEncoderStream;
    iconv.IconvLiteDecoderStream = streams.IconvLiteDecoderStream;

    // Streaming API.
    iconv.encodeStream = function encodeStream(encoding, options) {
        return new iconv.IconvLiteEncoderStream(iconv.getEncoder(encoding, options), options);
    }

    iconv.decodeStream = function decodeStream(encoding, options) {
        return new iconv.IconvLiteDecoderStream(iconv.getDecoder(encoding, options), options);
    }

    iconv.supportsStreams = true;
}

// Enable Streaming API automatically if 'stream' module is available and non-empty (the majority of environments).
var stream_module;
try {
    stream_module = require("stream");
} catch (e) {}

if (stream_module && stream_module.Transform) {
    iconv.enableStreamingAPI(stream_module);

} else {
    // In rare cases where 'stream' module is not available by default, throw a helpful exception.
    iconv.encodeStream = iconv.decodeStream = function() {
        throw new Error("iconv-lite Streaming API is not enabled. Use iconv.enableStreamingAPI(require('stream')); to enable it.");
    };
}

if ("Ā" != "\u0100") {
    console.error("iconv-lite warning: js files use non-utf8 encoding. See https://github.com/ashtuchkin/iconv-lite/wiki/Javascript-source-file-encodings for more info.");
}

},{"../encodings":61,"./bom-handling":77,"./streams":79,"safer-buffer":174,"stream":29}],79:[function(require,module,exports){
"use strict";

var Buffer = require("safer-buffer").Buffer;

// NOTE: Due to 'stream' module being pretty large (~100Kb, significant in browser environments), 
// we opt to dependency-inject it instead of creating a hard dependency.
module.exports = function(stream_module) {
    var Transform = stream_module.Transform;

    // == Encoder stream =======================================================

    function IconvLiteEncoderStream(conv, options) {
        this.conv = conv;
        options = options || {};
        options.decodeStrings = false; // We accept only strings, so we don't need to decode them.
        Transform.call(this, options);
    }

    IconvLiteEncoderStream.prototype = Object.create(Transform.prototype, {
        constructor: { value: IconvLiteEncoderStream }
    });

    IconvLiteEncoderStream.prototype._transform = function(chunk, encoding, done) {
        if (typeof chunk != 'string')
            return done(new Error("Iconv encoding stream needs strings as its input."));
        try {
            var res = this.conv.write(chunk);
            if (res && res.length) this.push(res);
            done();
        }
        catch (e) {
            done(e);
        }
    }

    IconvLiteEncoderStream.prototype._flush = function(done) {
        try {
            var res = this.conv.end();
            if (res && res.length) this.push(res);
            done();
        }
        catch (e) {
            done(e);
        }
    }

    IconvLiteEncoderStream.prototype.collect = function(cb) {
        var chunks = [];
        this.on('error', cb);
        this.on('data', function(chunk) { chunks.push(chunk); });
        this.on('end', function() {
            cb(null, Buffer.concat(chunks));
        });
        return this;
    }


    // == Decoder stream =======================================================

    function IconvLiteDecoderStream(conv, options) {
        this.conv = conv;
        options = options || {};
        options.encoding = this.encoding = 'utf8'; // We output strings.
        Transform.call(this, options);
    }

    IconvLiteDecoderStream.prototype = Object.create(Transform.prototype, {
        constructor: { value: IconvLiteDecoderStream }
    });

    IconvLiteDecoderStream.prototype._transform = function(chunk, encoding, done) {
        if (!Buffer.isBuffer(chunk) && !(chunk instanceof Uint8Array))
            return done(new Error("Iconv decoding stream needs buffers as its input."));
        try {
            var res = this.conv.write(chunk);
            if (res && res.length) this.push(res, this.encoding);
            done();
        }
        catch (e) {
            done(e);
        }
    }

    IconvLiteDecoderStream.prototype._flush = function(done) {
        try {
            var res = this.conv.end();
            if (res && res.length) this.push(res, this.encoding);                
            done();
        }
        catch (e) {
            done(e);
        }
    }

    IconvLiteDecoderStream.prototype.collect = function(cb) {
        var res = '';
        this.on('error', cb);
        this.on('data', function(chunk) { res += chunk; });
        this.on('end', function() {
            cb(null, res);
        });
        return this;
    }

    return {
        IconvLiteEncoderStream: IconvLiteEncoderStream,
        IconvLiteDecoderStream: IconvLiteDecoderStream,
    };
};

},{"safer-buffer":174}],80:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      } else {
        // At least give some kind of context to the user
        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
        err.context = er;
        throw err;
      }
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        args = Array.prototype.slice.call(arguments, 1);
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    args = Array.prototype.slice.call(arguments, 1);
    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else if (listeners) {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.prototype.listenerCount = function(type) {
  if (this._events) {
    var evlistener = this._events[type];

    if (isFunction(evlistener))
      return 1;
    else if (evlistener)
      return evlistener.length;
  }
  return 0;
};

EventEmitter.listenerCount = function(emitter, type) {
  return emitter.listenerCount(type);
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],81:[function(require,module,exports){
/* eslint-env browser */
module.exports = typeof self == 'object' ? self.FormData : window.FormData;

},{}],82:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var Transform = require('readable-stream').Transform
var inherits = require('inherits')

function throwIfNotStringOrBuffer (val, prefix) {
  if (!Buffer.isBuffer(val) && typeof val !== 'string') {
    throw new TypeError(prefix + ' must be a string or a buffer')
  }
}

function HashBase (blockSize) {
  Transform.call(this)

  this._block = Buffer.allocUnsafe(blockSize)
  this._blockSize = blockSize
  this._blockOffset = 0
  this._length = [0, 0, 0, 0]

  this._finalized = false
}

inherits(HashBase, Transform)

HashBase.prototype._transform = function (chunk, encoding, callback) {
  var error = null
  try {
    this.update(chunk, encoding)
  } catch (err) {
    error = err
  }

  callback(error)
}

HashBase.prototype._flush = function (callback) {
  var error = null
  try {
    this.push(this.digest())
  } catch (err) {
    error = err
  }

  callback(error)
}

HashBase.prototype.update = function (data, encoding) {
  throwIfNotStringOrBuffer(data, 'Data')
  if (this._finalized) throw new Error('Digest already called')
  if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)

  // consume data
  var block = this._block
  var offset = 0
  while (this._blockOffset + data.length - offset >= this._blockSize) {
    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
    this._update()
    this._blockOffset = 0
  }
  while (offset < data.length) block[this._blockOffset++] = data[offset++]

  // update length
  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
    this._length[j] += carry
    carry = (this._length[j] / 0x0100000000) | 0
    if (carry > 0) this._length[j] -= 0x0100000000 * carry
  }

  return this
}

HashBase.prototype._update = function () {
  throw new Error('_update is not implemented')
}

HashBase.prototype.digest = function (encoding) {
  if (this._finalized) throw new Error('Digest already called')
  this._finalized = true

  var digest = this._digest()
  if (encoding !== undefined) digest = digest.toString(encoding)

  // reset state
  this._block.fill(0)
  this._blockOffset = 0
  for (var i = 0; i < 4; ++i) this._length[i] = 0

  return digest
}

HashBase.prototype._digest = function () {
  throw new Error('_digest is not implemented')
}

module.exports = HashBase

},{"inherits":85,"readable-stream":170,"safe-buffer":173}],83:[function(require,module,exports){
var http = require('http');

var https = module.exports;

for (var key in http) {
    if (http.hasOwnProperty(key)) https[key] = http[key];
};

https.request = function (params, cb) {
    if (!params) params = {};
    params.scheme = 'https';
    params.protocol = 'https:';
    return http.request.call(this, params, cb);
}

},{"http":192}],84:[function(require,module,exports){
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],85:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      })
    }
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
}

},{}],86:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],87:[function(require,module,exports){
'use strict';

var isStream = module.exports = function (stream) {
	return stream !== null && typeof stream === 'object' && typeof stream.pipe === 'function';
};

isStream.writable = function (stream) {
	return isStream(stream) && stream.writable !== false && typeof stream._write === 'function' && typeof stream._writableState === 'object';
};

isStream.readable = function (stream) {
	return isStream(stream) && stream.readable !== false && typeof stream._read === 'function' && typeof stream._readableState === 'object';
};

isStream.duplex = function (stream) {
	return isStream.writable(stream) && isStream.readable(stream);
};

isStream.transform = function (stream) {
	return isStream.duplex(stream) && typeof stream._transform === 'function' && typeof stream._transformState === 'object';
};

},{}],88:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],89:[function(require,module,exports){
/**
 * lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="npm" -o ./`
 * Copyright jQuery Foundation and other contributors <https://jquery.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    funcTag = '[object Function]',
    genTag = '[object GeneratorFunction]';

/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;

/**
 * A faster alternative to `Function#apply`, this function invokes `func`
 * with the `this` binding of `thisArg` and the arguments of `args`.
 *
 * @private
 * @param {Function} func The function to invoke.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {Array} args The arguments to invoke `func` with.
 * @returns {*} Returns the result of `func`.
 */
function apply(func, thisArg, args) {
  switch (args.length) {
    case 0: return func.call(thisArg);
    case 1: return func.call(thisArg, args[0]);
    case 2: return func.call(thisArg, args[0], args[1]);
    case 3: return func.call(thisArg, args[0], args[1], args[2]);
  }
  return func.apply(thisArg, args);
}

/**
 * The base implementation of `_.times` without support for iteratee shorthands
 * or max array length checks.
 *
 * @private
 * @param {number} n The number of times to invoke `iteratee`.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the array of results.
 */
function baseTimes(n, iteratee) {
  var index = -1,
      result = Array(n);

  while (++index < n) {
    result[index] = iteratee(index);
  }
  return result;
}

/**
 * Creates a unary function that invokes `func` with its argument transformed.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {Function} transform The argument transform.
 * @returns {Function} Returns the new function.
 */
function overArg(func, transform) {
  return function(arg) {
    return func(transform(arg));
  };
}

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/** Built-in value references. */
var propertyIsEnumerable = objectProto.propertyIsEnumerable;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeKeys = overArg(Object.keys, Object),
    nativeMax = Math.max;

/** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */
var nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');

/**
 * Creates an array of the enumerable property names of the array-like `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @param {boolean} inherited Specify returning inherited property names.
 * @returns {Array} Returns the array of property names.
 */
function arrayLikeKeys(value, inherited) {
  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
  // Safari 9 makes `arguments.length` enumerable in strict mode.
  var result = (isArray(value) || isArguments(value))
    ? baseTimes(value.length, String)
    : [];

  var length = result.length,
      skipIndexes = !!length;

  for (var key in value) {
    if ((inherited || hasOwnProperty.call(value, key)) &&
        !(skipIndexes && (key == 'length' || isIndex(key, length)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * Assigns `value` to `key` of `object` if the existing value is not equivalent
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignValue(object, key, value) {
  var objValue = object[key];
  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
      (value === undefined && !(key in object))) {
    object[key] = value;
  }
}

/**
 * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeys(object) {
  if (!isPrototype(object)) {
    return nativeKeys(object);
  }
  var result = [];
  for (var key in Object(object)) {
    if (hasOwnProperty.call(object, key) && key != 'constructor') {
      result.push(key);
    }
  }
  return result;
}

/**
 * The base implementation of `_.rest` which doesn't validate or coerce arguments.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @returns {Function} Returns the new function.
 */
function baseRest(func, start) {
  start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
  return function() {
    var args = arguments,
        index = -1,
        length = nativeMax(args.length - start, 0),
        array = Array(length);

    while (++index < length) {
      array[index] = args[start + index];
    }
    index = -1;
    var otherArgs = Array(start + 1);
    while (++index < start) {
      otherArgs[index] = args[index];
    }
    otherArgs[start] = array;
    return apply(func, this, otherArgs);
  };
}

/**
 * Copies properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy properties from.
 * @param {Array} props The property identifiers to copy.
 * @param {Object} [object={}] The object to copy properties to.
 * @param {Function} [customizer] The function to customize copied values.
 * @returns {Object} Returns `object`.
 */
function copyObject(source, props, object, customizer) {
  object || (object = {});

  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index];

    var newValue = customizer
      ? customizer(object[key], source[key], key, object, source)
      : undefined;

    assignValue(object, key, newValue === undefined ? source[key] : newValue);
  }
  return object;
}

/**
 * Creates a function like `_.assign`.
 *
 * @private
 * @param {Function} assigner The function to assign values.
 * @returns {Function} Returns the new assigner function.
 */
function createAssigner(assigner) {
  return baseRest(function(object, sources) {
    var index = -1,
        length = sources.length,
        customizer = length > 1 ? sources[length - 1] : undefined,
        guard = length > 2 ? sources[2] : undefined;

    customizer = (assigner.length > 3 && typeof customizer == 'function')
      ? (length--, customizer)
      : undefined;

    if (guard && isIterateeCall(sources[0], sources[1], guard)) {
      customizer = length < 3 ? undefined : customizer;
      length = 1;
    }
    object = Object(object);
    while (++index < length) {
      var source = sources[index];
      if (source) {
        assigner(object, source, index, customizer);
      }
    }
    return object;
  });
}

/**
 * Checks if `value` is a valid array-like index.
 *
 * @private
 * @param {*} value The value to check.
 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 */
function isIndex(value, length) {
  length = length == null ? MAX_SAFE_INTEGER : length;
  return !!length &&
    (typeof value == 'number' || reIsUint.test(value)) &&
    (value > -1 && value % 1 == 0 && value < length);
}

/**
 * Checks if the given arguments are from an iteratee call.
 *
 * @private
 * @param {*} value The potential iteratee value argument.
 * @param {*} index The potential iteratee index or key argument.
 * @param {*} object The potential iteratee object argument.
 * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
 *  else `false`.
 */
function isIterateeCall(value, index, object) {
  if (!isObject(object)) {
    return false;
  }
  var type = typeof index;
  if (type == 'number'
        ? (isArrayLike(object) && isIndex(index, object.length))
        : (type == 'string' && index in object)
      ) {
    return eq(object[index], value);
  }
  return false;
}

/**
 * Checks if `value` is likely a prototype object.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
 */
function isPrototype(value) {
  var Ctor = value && value.constructor,
      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

  return value === proto;
}

/**
 * Performs a
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * comparison between two values to determine if they are equivalent.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * var object = { 'a': 1 };
 * var other = { 'a': 1 };
 *
 * _.eq(object, object);
 * // => true
 *
 * _.eq(object, other);
 * // => false
 *
 * _.eq('a', 'a');
 * // => true
 *
 * _.eq('a', Object('a'));
 * // => false
 *
 * _.eq(NaN, NaN);
 * // => true
 */
function eq(value, other) {
  return value === other || (value !== value && other !== other);
}

/**
 * Checks if `value` is likely an `arguments` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 *  else `false`.
 * @example
 *
 * _.isArguments(function() { return arguments; }());
 * // => true
 *
 * _.isArguments([1, 2, 3]);
 * // => false
 */
function isArguments(value) {
  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
  return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
    (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
}

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(document.body.children);
 * // => false
 *
 * _.isArray('abc');
 * // => false
 *
 * _.isArray(_.noop);
 * // => false
 */
var isArray = Array.isArray;

/**
 * Checks if `value` is array-like. A value is considered array-like if it's
 * not a function and has a `value.length` that's an integer greater than or
 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
 * @example
 *
 * _.isArrayLike([1, 2, 3]);
 * // => true
 *
 * _.isArrayLike(document.body.children);
 * // => true
 *
 * _.isArrayLike('abc');
 * // => true
 *
 * _.isArrayLike(_.noop);
 * // => false
 */
function isArrayLike(value) {
  return value != null && isLength(value.length) && !isFunction(value);
}

/**
 * This method is like `_.isArrayLike` except that it also checks if `value`
 * is an object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array-like object,
 *  else `false`.
 * @example
 *
 * _.isArrayLikeObject([1, 2, 3]);
 * // => true
 *
 * _.isArrayLikeObject(document.body.children);
 * // => true
 *
 * _.isArrayLikeObject('abc');
 * // => false
 *
 * _.isArrayLikeObject(_.noop);
 * // => false
 */
function isArrayLikeObject(value) {
  return isObjectLike(value) && isArrayLike(value);
}

/**
 * Checks if `value` is classified as a `Function` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 *
 * _.isFunction(/abc/);
 * // => false
 */
function isFunction(value) {
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in Safari 8-9 which returns 'object' for typed array and other constructors.
  var tag = isObject(value) ? objectToString.call(value) : '';
  return tag == funcTag || tag == genTag;
}

/**
 * Checks if `value` is a valid array-like length.
 *
 * **Note:** This method is loosely based on
 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
 * @example
 *
 * _.isLength(3);
 * // => true
 *
 * _.isLength(Number.MIN_VALUE);
 * // => false
 *
 * _.isLength(Infinity);
 * // => false
 *
 * _.isLength('3');
 * // => false
 */
function isLength(value) {
  return typeof value == 'number' &&
    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}

/**
 * Checks if `value` is the
 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(_.noop);
 * // => true
 *
 * _.isObject(null);
 * // => false
 */
function isObject(value) {
  var type = typeof value;
  return !!value && (type == 'object' || type == 'function');
}

/**
 * Checks if `value` is object-like. A value is object-like if it's not `null`
 * and has a `typeof` result of "object".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 * @example
 *
 * _.isObjectLike({});
 * // => true
 *
 * _.isObjectLike([1, 2, 3]);
 * // => true
 *
 * _.isObjectLike(_.noop);
 * // => false
 *
 * _.isObjectLike(null);
 * // => false
 */
function isObjectLike(value) {
  return !!value && typeof value == 'object';
}

/**
 * Assigns own enumerable string keyed properties of source objects to the
 * destination object. Source objects are applied from left to right.
 * Subsequent sources overwrite property assignments of previous sources.
 *
 * **Note:** This method mutates `object` and is loosely based on
 * [`Object.assign`](https://mdn.io/Object/assign).
 *
 * @static
 * @memberOf _
 * @since 0.10.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @see _.assignIn
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * function Bar() {
 *   this.c = 3;
 * }
 *
 * Foo.prototype.b = 2;
 * Bar.prototype.d = 4;
 *
 * _.assign({ 'a': 0 }, new Foo, new Bar);
 * // => { 'a': 1, 'c': 3 }
 */
var assign = createAssigner(function(object, source) {
  if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) {
    copyObject(source, keys(source), object);
    return;
  }
  for (var key in source) {
    if (hasOwnProperty.call(source, key)) {
      assignValue(object, key, source[key]);
    }
  }
});

/**
 * Creates an array of the own enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects. See the
 * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * for more details.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keys(new Foo);
 * // => ['a', 'b'] (iteration order is not guaranteed)
 *
 * _.keys('hi');
 * // => ['0', '1']
 */
function keys(object) {
  return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
}

module.exports = assign;

},{}],90:[function(require,module,exports){
'use strict'

var parse = require('./lib/parse')
var Parser = require('./lib/Parser')
var escape = require('./lib/escape')
var Element = require('./lib/Element')
var equal = require('./lib/equal')
var createElement = require('./lib/createElement')
var tag = require('./lib/tag')
var tagString = require('./lib/tagString')
var is = require('./lib/is')
var clone = require('./lib/clone')
var stringify = require('./lib/stringify')

exports = module.exports = function ltx () {
  return tag.apply(null, arguments)
}

exports.Element = Element

exports.equal = equal.equal
exports.nameEqual = equal.name
exports.attrsEqual = equal.attrs
exports.childrenEqual = equal.children

exports.isNode = is.isNode
exports.isElement = is.isElement
exports.isText = is.isText

exports.clone = clone
exports.createElement = createElement

exports.escapeXML = escape.escapeXML
exports.unescapeXML = escape.unescapeXML
exports.escapeXMLText = escape.escapeXMLText
exports.unescapeXMLText = escape.unescapeXMLText

exports.Parser = Parser
exports.parse = parse

exports.tag = tag
exports.tagString = tagString

exports.stringify = stringify

},{"./lib/Element":91,"./lib/Parser":92,"./lib/clone":93,"./lib/createElement":94,"./lib/equal":95,"./lib/escape":96,"./lib/is":97,"./lib/parse":98,"./lib/stringify":100,"./lib/tag":101,"./lib/tagString":102}],91:[function(require,module,exports){
'use strict'

var escape = require('./escape')
var escapeXML = escape.escapeXML
var escapeXMLText = escape.escapeXMLText

var equality = require('./equal')
var equal = equality.equal
var nameEqual = equality.name
var attrsEqual = equality.attrs
var childrenEqual = equality.children

var clone = require('./clone')

/**
 * Element
 *
 * Attributes are in the element.attrs object. Children is a list of
 * either other Elements or Strings for text content.
 **/
function Element (name, attrs) {
  this.name = name
  this.parent = null
  this.children = []
  this.attrs = {}
  this.setAttrs(attrs)
}

/* Accessors */

/**
 * if (element.is('message', 'jabber:client')) ...
 **/
Element.prototype.is = function (name, xmlns) {
  return (this.getName() === name) &&
  (!xmlns || (this.getNS() === xmlns))
}

/* without prefix */
Element.prototype.getName = function () {
  if (this.name.indexOf(':') >= 0) {
    return this.name.substr(this.name.indexOf(':') + 1)
  } else {
    return this.name
  }
}

/**
 * retrieves the namespace of the current element, upwards recursively
 **/
Element.prototype.getNS = function () {
  if (this.name.indexOf(':') >= 0) {
    var prefix = this.name.substr(0, this.name.indexOf(':'))
    return this.findNS(prefix)
  }
  return this.findNS()
}

/**
 * find the namespace to the given prefix, upwards recursively
 **/
Element.prototype.findNS = function (prefix) {
  if (!prefix) {
    /* default namespace */
    if (this.attrs.xmlns) {
      return this.attrs.xmlns
    } else if (this.parent) {
      return this.parent.findNS()
    }
  } else {
    /* prefixed namespace */
    var attr = 'xmlns:' + prefix
    if (this.attrs[attr]) {
      return this.attrs[attr]
    } else if (this.parent) {
      return this.parent.findNS(prefix)
    }
  }
}

/**
 * Recursiverly gets all xmlns defined, in the form of {url:prefix}
 **/
Element.prototype.getXmlns = function () {
  var namespaces = {}

  if (this.parent) {
    namespaces = this.parent.getXmlns()
  }

  for (var attr in this.attrs) {
    var m = attr.match('xmlns:?(.*)')
    // eslint-disable-next-line  no-prototype-builtins
    if (this.attrs.hasOwnProperty(attr) && m) {
      namespaces[this.attrs[attr]] = m[1]
    }
  }
  return namespaces
}

Element.prototype.setAttrs = function (attrs) {
  if (typeof attrs === 'string') {
    this.attrs.xmlns = attrs
  } else if (attrs) {
    Object.keys(attrs).forEach(function (key) {
      this.attrs[key] = attrs[key]
    }, this)
  }
}

/**
 * xmlns can be null, returns the matching attribute.
 **/
Element.prototype.getAttr = function (name, xmlns) {
  if (!xmlns) {
    return this.attrs[name]
  }

  var namespaces = this.getXmlns()

  if (!namespaces[xmlns]) {
    return null
  }

  return this.attrs[[namespaces[xmlns], name].join(':')]
}

/**
 * xmlns can be null
 **/
Element.prototype.getChild = function (name, xmlns) {
  return this.getChildren(name, xmlns)[0]
}

/**
 * xmlns can be null
 **/
Element.prototype.getChildren = function (name, xmlns) {
  var result = []
  for (var i = 0; i < this.children.length; i++) {
    var child = this.children[i]
    if (child.getName &&
      (child.getName() === name) &&
      (!xmlns || (child.getNS() === xmlns))) {
      result.push(child)
    }
  }
  return result
}

/**
 * xmlns and recursive can be null
 **/
Element.prototype.getChildByAttr = function (attr, val, xmlns, recursive) {
  return this.getChildrenByAttr(attr, val, xmlns, recursive)[0]
}

/**
 * xmlns and recursive can be null
 **/
Element.prototype.getChildrenByAttr = function (attr, val, xmlns, recursive) {
  var result = []
  for (var i = 0; i < this.children.length; i++) {
    var child = this.children[i]
    if (child.attrs &&
      (child.attrs[attr] === val) &&
      (!xmlns || (child.getNS() === xmlns))) {
      result.push(child)
    }
    if (recursive && child.getChildrenByAttr) {
      result.push(child.getChildrenByAttr(attr, val, xmlns, true))
    }
  }
  if (recursive) {
    result = [].concat.apply([], result)
  }
  return result
}

Element.prototype.getChildrenByFilter = function (filter, recursive) {
  var result = []
  for (var i = 0; i < this.children.length; i++) {
    var child = this.children[i]
    if (filter(child)) {
      result.push(child)
    }
    if (recursive && child.getChildrenByFilter) {
      result.push(child.getChildrenByFilter(filter, true))
    }
  }
  if (recursive) {
    result = [].concat.apply([], result)
  }
  return result
}

Element.prototype.getText = function () {
  var text = ''
  for (var i = 0; i < this.children.length; i++) {
    var child = this.children[i]
    if ((typeof child === 'string') || (typeof child === 'number')) {
      text += child
    }
  }
  return text
}

Element.prototype.getChildText = function (name, xmlns) {
  var child = this.getChild(name, xmlns)
  return child ? child.getText() : null
}

/**
 * Return all direct descendents that are Elements.
 * This differs from `getChildren` in that it will exclude text nodes,
 * processing instructions, etc.
 */
Element.prototype.getChildElements = function () {
  return this.getChildrenByFilter(function (child) {
    return child instanceof Element
  })
}

/* Builder */

/** returns uppermost parent */
Element.prototype.root = function () {
  if (this.parent) {
    return this.parent.root()
  }
  return this
}
Element.prototype.tree = Element.prototype.root

/** just parent or itself */
Element.prototype.up = function () {
  if (this.parent) {
    return this.parent
  }
  return this
}

/** create child node and return it */
Element.prototype.c = function (name, attrs) {
  return this.cnode(new Element(name, attrs))
}

Element.prototype.cnode = function (child) {
  this.children.push(child)
  if (typeof child === 'object') {
    child.parent = this
  }
  return child
}

/** add text node and return element */
Element.prototype.t = function (text) {
  this.children.push(text)
  return this
}

/* Manipulation */

/**
 * Either:
 *   el.remove(childEl)
 *   el.remove('author', 'urn:...')
 */
Element.prototype.remove = function (el, xmlns) {
  var filter
  if (typeof el === 'string') {
    /* 1st parameter is tag name */
    filter = function (child) {
      return !(child.is &&
      child.is(el, xmlns))
    }
  } else {
    /* 1st parameter is element */
    filter = function (child) {
      return child !== el
    }
  }

  this.children = this.children.filter(filter)

  return this
}

Element.prototype.clone = function () {
  return clone(this)
}

Element.prototype.text = function (val) {
  if (val && this.children.length === 1) {
    this.children[0] = val
    return this
  }
  return this.getText()
}

Element.prototype.attr = function (attr, val) {
  if (typeof val !== 'undefined' || val === null) {
    if (!this.attrs) {
      this.attrs = {}
    }
    this.attrs[attr] = val
    return this
  }
  return this.attrs[attr]
}

/* Serialization */

Element.prototype.toString = function () {
  var s = ''
  this.write(function (c) {
    s += c
  })
  return s
}

Element.prototype.toJSON = function () {
  return {
    name: this.name,
    attrs: this.attrs,
    children: this.children.map(function (child) {
      return child && child.toJSON ? child.toJSON() : child
    })
  }
}

Element.prototype._addChildren = function (writer) {
  writer('>')
  for (var i = 0; i < this.children.length; i++) {
    var child = this.children[i]
    /* Skip null/undefined */
    if (child || (child === 0)) {
      if (child.write) {
        child.write(writer)
      } else if (typeof child === 'string') {
        writer(escapeXMLText(child))
      } else if (child.toString) {
        writer(escapeXMLText(child.toString(10)))
      }
    }
  }
  writer('</')
  writer(this.name)
  writer('>')
}

Element.prototype.write = function (writer) {
  writer('<')
  writer(this.name)
  for (var k in this.attrs) {
    var v = this.attrs[k]
    if (v != null) { // === null || undefined
      writer(' ')
      writer(k)
      writer('="')
      if (typeof v !== 'string') {
        v = v.toString()
      }
      writer(escapeXML(v))
      writer('"')
    }
  }
  if (this.children.length === 0) {
    writer('/>')
  } else {
    this._addChildren(writer)
  }
}

Element.prototype.nameEquals = function (el) {
  return nameEqual(this, el)
}

Element.prototype.attrsEquals = function (el) {
  return attrsEqual(this, el)
}

Element.prototype.childrenEquals = function (el) {
  return childrenEqual(this, el)
}

Element.prototype.equals = function (el) {
  return equal(this, el)
}

module.exports = Element

},{"./clone":93,"./equal":95,"./escape":96}],92:[function(require,module,exports){
'use strict'

var EventEmitter = require('events').EventEmitter
var inherits = require('inherits')
var Element = require('./Element')
var LtxParser = require('./parsers/ltx')

var Parser = function (options) {
  EventEmitter.call(this)

  var ParserInterface = this.Parser = (options && options.Parser) || this.DefaultParser
  var ElementInterface = this.Element = (options && options.Element) || this.DefaultElement

  this.parser = new ParserInterface()

  var el
  var self = this
  this.parser.on('startElement', function (name, attrs) {
    var child = new ElementInterface(name, attrs)
    if (!el) {
      el = child
    } else {
      el = el.cnode(child)
    }
  })
  this.parser.on('endElement', function (name) {
    if (!el) {
      /* Err */
    } else if (name === el.name) {
      if (el.parent) {
        el = el.parent
      } else if (!self.tree) {
        self.tree = el
        el = undefined
      }
    }
  })
  this.parser.on('text', function (str) {
    if (el) {
      el.t(str)
    }
  })
  this.parser.on('error', function (e) {
    self.error = e
    self.emit('error', e)
  })
}

inherits(Parser, EventEmitter)

Parser.prototype.DefaultParser = LtxParser

Parser.prototype.DefaultElement = Element

Parser.prototype.write = function (data) {
  this.parser.write(data)
}

Parser.prototype.end = function (data) {
  this.parser.end(data)

  if (!this.error) {
    if (this.tree) {
      this.emit('tree', this.tree)
    } else {
      this.emit('error', new Error('Incomplete document'))
    }
  }
}

module.exports = Parser

},{"./Element":91,"./parsers/ltx":99,"events":80,"inherits":85}],93:[function(require,module,exports){
'use strict'

module.exports = function clone (el) {
  var clone = new el.constructor(el.name, el.attrs)
  for (var i = 0; i < el.children.length; i++) {
    var child = el.children[i]
    clone.cnode(child.clone ? child.clone() : child)
  }
  return clone
}

},{}],94:[function(require,module,exports){
'use strict'

var Element = require('./Element')

/**
 * JSX compatible API, use this function as pragma
 * https://facebook.github.io/jsx/
 *
 * @param  {string} name  name of the element
 * @param  {object} attrs object of attribute key/value pairs
 * @return {Element}      Element
 */
module.exports = function createElement (name, attrs /*, child1, child2, ... */) {
  var el = new Element(name, attrs)

  for (var i = 2; i < arguments.length; i++) {
    var child = arguments[i]
    if (child) el.cnode(child)
  }

  return el
}

},{"./Element":91}],95:[function(require,module,exports){
'use strict'

function nameEqual (a, b) {
  return a.name === b.name
}

function attrsEqual (a, b) {
  var attrs = a.attrs
  var keys = Object.keys(attrs)
  var length = keys.length
  if (length !== Object.keys(b.attrs).length) return false
  for (var i = 0, l = length; i < l; i++) {
    var key = keys[i]
    var value = attrs[key]
    if (value == null || b.attrs[key] == null) { // === null || undefined
      if (value !== b.attrs[key]) return false
    } else if (value.toString() !== b.attrs[key].toString()) {
      return false
    }
  }
  return true
}

function childrenEqual (a, b) {
  var children = a.children
  var length = children.length
  if (length !== b.children.length) return false
  for (var i = 0, l = length; i < l; i++) {
    var child = children[i]
    if (typeof child === 'string') {
      if (child !== b.children[i]) return false
    } else {
      if (!child.equals(b.children[i])) return false
    }
  }
  return true
}

function equal (a, b) {
  if (!nameEqual(a, b)) return false
  if (!attrsEqual(a, b)) return false
  if (!childrenEqual(a, b)) return false
  return true
}

module.exports.name = nameEqual
module.exports.attrs = attrsEqual
module.exports.children = childrenEqual
module.exports.equal = equal

},{}],96:[function(require,module,exports){
'use strict'

var escapeXMLTable = {
  '&': '&amp;',
  '<': '&lt;',
  '>': '&gt;',
  '"': '&quot;',
  '\'': '&apos;'
}

function escapeXMLReplace (match) {
  return escapeXMLTable[match]
}

var unescapeXMLTable = {
  '&amp;': '&',
  '&lt;': '<',
  '&gt;': '>',
  '&quot;': '"',
  '&apos;': "'"
}

function unescapeXMLReplace (match) {
  if (match[1] === '#') {
    var num
    if (match[2] === 'x') {
      num = parseInt(match.slice(3), 16)
    } else {
      num = parseInt(match.slice(2), 10)
    }
    // https://www.w3.org/TR/xml/#NT-Char defines legal XML characters:
    // #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
    if (num === 0x9 || num === 0xA || num === 0xD ||
        (num >= 0x20 && num <= 0xD7FF) ||
        (num >= 0xE000 && num <= 0xFFFD) ||
        (num >= 0x10000 && num <= 0x10FFFF)) {
      return String.fromCodePoint(num)
    }
    throw new Error('Illegal XML character 0x' + num.toString(16))
  }
  if (unescapeXMLTable[match]) {
    return unescapeXMLTable[match] || match
  }
  throw new Error('Illegal XML entity ' + match)
}

exports.escapeXML = function escapeXML (s) {
  return s.replace(/&|<|>|"|'/g, escapeXMLReplace)
}

exports.unescapeXML = function unescapeXML (s) {
  var result = ''
  var start = -1
  var end = -1
  var previous = 0
  while ((start = s.indexOf('&', previous)) !== -1 && (end = s.indexOf(';', start + 1)) !== -1) {
    result = result +
      s.substring(previous, start) +
      unescapeXMLReplace(s.substring(start, end + 1))
    previous = end + 1
  }

  // shortcut if loop never entered:
  // return the original string without creating new objects
  if (previous === 0) return s

  // push the remaining characters
  result = result + s.substring(previous)

  return result
}

exports.escapeXMLText = function escapeXMLText (s) {
  return s.replace(/&|<|>/g, escapeXMLReplace)
}

exports.unescapeXMLText = function unescapeXMLText (s) {
  return s.replace(/&(amp|#38|lt|#60|gt|#62);/g, unescapeXMLReplace)
}

},{}],97:[function(require,module,exports){
'use strict'

var Element = require('./Element')

module.exports.isNode = function is (el) {
  return el instanceof Element || typeof el === 'string'
}

module.exports.isElement = function isElement (el) {
  return el instanceof Element
}

module.exports.isText = function isText (el) {
  return typeof el === 'string'
}

},{"./Element":91}],98:[function(require,module,exports){
'use strict'

var Parser = require('./Parser')

module.exports = function parse (data, options) {
  var p
  if (typeof options === 'function') {
    p = new options() // eslint-disable-line
  } else {
    p = new Parser(options)
  }

  var result = null
  var error = null

  p.on('tree', function (tree) {
    result = tree
  })
  p.on('error', function (e) {
    error = e
  })

  p.write(data)
  p.end()

  if (error) {
    throw error
  } else {
    return result
  }
}

},{"./Parser":92}],99:[function(require,module,exports){
'use strict'

var inherits = require('inherits')
var EventEmitter = require('events').EventEmitter
var unescapeXML = require('../escape').unescapeXML

var STATE_TEXT = 0
var STATE_IGNORE_COMMENT = 1
var STATE_IGNORE_INSTRUCTION = 2
var STATE_TAG_NAME = 3
var STATE_TAG = 4
var STATE_ATTR_NAME = 5
var STATE_ATTR_EQ = 6
var STATE_ATTR_QUOT = 7
var STATE_ATTR_VALUE = 8
var STATE_CDATA = 9
var STATE_IGNORE_CDATA = 10

var SaxLtx = module.exports = function SaxLtx () {
  EventEmitter.call(this)

  var state = STATE_TEXT
  var remainder
  var tagName
  var attrs
  var endTag
  var selfClosing
  var attrQuote
  var attrQuoteChar
  var recordStart = 0
  var attrName

  this._handleTagOpening = function (endTag, tagName, attrs) {
    if (!endTag) {
      this.emit('startElement', tagName, attrs)
      if (selfClosing) {
        this.emit('endElement', tagName)
      }
    } else {
      this.emit('endElement', tagName)
    }
  }

  this.write = function (data) {
    if (typeof data !== 'string') {
      data = data.toString()
    }
    var pos = 0

    /* Anything from previous write()? */
    if (remainder) {
      data = remainder + data
      pos += remainder.length
      remainder = null
    }

    function endRecording () {
      if (typeof recordStart === 'number') {
        var recorded = data.substring(recordStart, pos)
        recordStart = undefined
        return recorded
      }
    }

    for (; pos < data.length; pos++) {
      if (state === STATE_TEXT) {
        // if we're looping through text, fast-forward using indexOf to
        // the next '<' character
        var lt = data.indexOf('<', pos)
        if (lt !== -1 && pos !== lt) {
          pos = lt
        }
      } else if (state === STATE_ATTR_VALUE) {
        // if we're looping through an attribute, fast-forward using
        // indexOf to the next end quote character
        var quot = data.indexOf(attrQuoteChar, pos)
        if (quot !== -1) {
          pos = quot
        }
      } else if (state === STATE_IGNORE_COMMENT) {
        // if we're looping through a comment, fast-forward using
        // indexOf to the first end-comment character
        var endcomment = data.indexOf('-->', pos)
        if (endcomment !== -1) {
          pos = endcomment + 2 // target the '>' character
        }
      } else if (state === STATE_IGNORE_CDATA) {
        // if we're looping through a CDATA, fast-forward using
        // indexOf to the first end-CDATA character ]]>
        var endCDATA = data.indexOf(']]>', pos)
        if (endCDATA !== -1) {
          pos = endCDATA + 2 // target the '>' character
        }
      }

      var c = data.charCodeAt(pos)
      switch (state) {
        case STATE_TEXT:
          if (c === 60 /* < */) {
            var text = endRecording()
            if (text) {
              this.emit('text', unescapeXML(text))
            }
            state = STATE_TAG_NAME
            recordStart = pos + 1
            attrs = {}
          }
          break
        case STATE_CDATA:
          if (c === 93 /* ] */ && data.substr(pos + 1, 2) === ']>') {
            var cData = endRecording()
            if (cData) {
              this.emit('text', cData)
            }
            state = STATE_TEXT
          }
          break
        case STATE_TAG_NAME:
          if (c === 47 /* / */ && recordStart === pos) {
            recordStart = pos + 1
            endTag = true
          } else if (c === 33 /* ! */) {
            if (data.substr(pos + 1, 7) === '[CDATA[') {
              recordStart = pos + 8
              state = STATE_CDATA
            } else {
              recordStart = undefined
              state = STATE_IGNORE_COMMENT
            }
          } else if (c === 63 /* ? */) {
            recordStart = undefined
            state = STATE_IGNORE_INSTRUCTION
          } else if (c <= 32 || c === 47 /* / */ || c === 62 /* > */) {
            tagName = endRecording()
            pos--
            state = STATE_TAG
          }
          break
        case STATE_IGNORE_COMMENT:
          if (c === 62 /* > */) {
            var prevFirst = data.charCodeAt(pos - 1)
            var prevSecond = data.charCodeAt(pos - 2)
            if ((prevFirst === 45 /* - */ && prevSecond === 45 /* - */) ||
                (prevFirst === 93 /* ] */ && prevSecond === 93 /* ] */)) {
              state = STATE_TEXT
            }
          }
          break
        case STATE_IGNORE_INSTRUCTION:
          if (c === 62 /* > */) {
            var prev = data.charCodeAt(pos - 1)
            if (prev === 63 /* ? */) {
              state = STATE_TEXT
            }
          }
          break
        case STATE_TAG:
          if (c === 62 /* > */) {
            this._handleTagOpening(endTag, tagName, attrs)
            tagName = undefined
            attrs = undefined
            endTag = undefined
            selfClosing = undefined
            state = STATE_TEXT
            recordStart = pos + 1
          } else if (c === 47 /* / */) {
            selfClosing = true
          } else if (c > 32) {
            recordStart = pos
            state = STATE_ATTR_NAME
          }
          break
        case STATE_ATTR_NAME:
          if (c <= 32 || c === 61 /* = */) {
            attrName = endRecording()
            pos--
            state = STATE_ATTR_EQ
          }
          break
        case STATE_ATTR_EQ:
          if (c === 61 /* = */) {
            state = STATE_ATTR_QUOT
          }
          break
        case STATE_ATTR_QUOT:
          if (c === 34 /* " */ || c === 39 /* ' */) {
            attrQuote = c
            attrQuoteChar = c === 34 ? '"' : "'"
            state = STATE_ATTR_VALUE
            recordStart = pos + 1
          }
          break
        case STATE_ATTR_VALUE:
          if (c === attrQuote) {
            var value = unescapeXML(endRecording())
            attrs[attrName] = value
            attrName = undefined
            state = STATE_TAG
          }
          break
      }
    }

    if (typeof recordStart === 'number' &&
      recordStart <= data.length) {
      remainder = data.slice(recordStart)
      recordStart = 0
    }
  }
}
inherits(SaxLtx, EventEmitter)

SaxLtx.prototype.end = function (data) {
  if (data) {
    this.write(data)
  }

  /* Uh, yeah */
  this.write = function () {}
}

},{"../escape":96,"events":80,"inherits":85}],100:[function(require,module,exports){
'use strict'

function stringify (el, indent, level) {
  if (typeof indent === 'number') indent = ' '.repeat(indent)
  if (!level) level = 1
  var s = ''
  s += '<' + el.name

  Object.keys(el.attrs).forEach(function (k) {
    s += ' ' + k + '=' + '"' + el.attrs[k] + '"'
  })

  if (el.children.length) {
    s += '>'
    el.children.forEach(function (child, i) {
      if (indent) s += '\n' + indent.repeat(level)
      if (typeof child === 'string') {
        s += child
      } else {
        s += stringify(child, indent, level + 1)
      }
    })
    if (indent) s += '\n' + indent.repeat(level - 1)
    s += '</' + el.name + '>'
  } else {
    s += '/>'
  }

  return s
}

module.exports = stringify

},{}],101:[function(require,module,exports){
'use strict'

var tagString = require('./tagString')
var parse = require('./parse')

module.exports = function tag (/* [literals], ...substitutions */) {
  return parse(tagString.apply(null, arguments))
}

},{"./parse":98,"./tagString":102}],102:[function(require,module,exports){
'use strict'

var escape = require('./escape').escapeXML

module.exports = function tagString (/* [literals], ...substitutions */) {
  var literals = arguments[0]

  var str = ''

  for (var i = 1; i < arguments.length; i++) {
    str += literals[i - 1]
    str += escape(arguments[i])
  }
  str += literals[literals.length - 1]

  return str
}

},{"./escape":96}],103:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var HashBase = require('hash-base')
var Buffer = require('safe-buffer').Buffer

var ARRAY16 = new Array(16)

function MD5 () {
  HashBase.call(this, 64)

  // state
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
}

inherits(MD5, HashBase)

MD5.prototype._update = function () {
  var M = ARRAY16
  for (var i = 0; i < 16; ++i) M[i] = this._block.readInt32LE(i * 4)

  var a = this._a
  var b = this._b
  var c = this._c
  var d = this._d

  a = fnF(a, b, c, d, M[0], 0xd76aa478, 7)
  d = fnF(d, a, b, c, M[1], 0xe8c7b756, 12)
  c = fnF(c, d, a, b, M[2], 0x242070db, 17)
  b = fnF(b, c, d, a, M[3], 0xc1bdceee, 22)
  a = fnF(a, b, c, d, M[4], 0xf57c0faf, 7)
  d = fnF(d, a, b, c, M[5], 0x4787c62a, 12)
  c = fnF(c, d, a, b, M[6], 0xa8304613, 17)
  b = fnF(b, c, d, a, M[7], 0xfd469501, 22)
  a = fnF(a, b, c, d, M[8], 0x698098d8, 7)
  d = fnF(d, a, b, c, M[9], 0x8b44f7af, 12)
  c = fnF(c, d, a, b, M[10], 0xffff5bb1, 17)
  b = fnF(b, c, d, a, M[11], 0x895cd7be, 22)
  a = fnF(a, b, c, d, M[12], 0x6b901122, 7)
  d = fnF(d, a, b, c, M[13], 0xfd987193, 12)
  c = fnF(c, d, a, b, M[14], 0xa679438e, 17)
  b = fnF(b, c, d, a, M[15], 0x49b40821, 22)

  a = fnG(a, b, c, d, M[1], 0xf61e2562, 5)
  d = fnG(d, a, b, c, M[6], 0xc040b340, 9)
  c = fnG(c, d, a, b, M[11], 0x265e5a51, 14)
  b = fnG(b, c, d, a, M[0], 0xe9b6c7aa, 20)
  a = fnG(a, b, c, d, M[5], 0xd62f105d, 5)
  d = fnG(d, a, b, c, M[10], 0x02441453, 9)
  c = fnG(c, d, a, b, M[15], 0xd8a1e681, 14)
  b = fnG(b, c, d, a, M[4], 0xe7d3fbc8, 20)
  a = fnG(a, b, c, d, M[9], 0x21e1cde6, 5)
  d = fnG(d, a, b, c, M[14], 0xc33707d6, 9)
  c = fnG(c, d, a, b, M[3], 0xf4d50d87, 14)
  b = fnG(b, c, d, a, M[8], 0x455a14ed, 20)
  a = fnG(a, b, c, d, M[13], 0xa9e3e905, 5)
  d = fnG(d, a, b, c, M[2], 0xfcefa3f8, 9)
  c = fnG(c, d, a, b, M[7], 0x676f02d9, 14)
  b = fnG(b, c, d, a, M[12], 0x8d2a4c8a, 20)

  a = fnH(a, b, c, d, M[5], 0xfffa3942, 4)
  d = fnH(d, a, b, c, M[8], 0x8771f681, 11)
  c = fnH(c, d, a, b, M[11], 0x6d9d6122, 16)
  b = fnH(b, c, d, a, M[14], 0xfde5380c, 23)
  a = fnH(a, b, c, d, M[1], 0xa4beea44, 4)
  d = fnH(d, a, b, c, M[4], 0x4bdecfa9, 11)
  c = fnH(c, d, a, b, M[7], 0xf6bb4b60, 16)
  b = fnH(b, c, d, a, M[10], 0xbebfbc70, 23)
  a = fnH(a, b, c, d, M[13], 0x289b7ec6, 4)
  d = fnH(d, a, b, c, M[0], 0xeaa127fa, 11)
  c = fnH(c, d, a, b, M[3], 0xd4ef3085, 16)
  b = fnH(b, c, d, a, M[6], 0x04881d05, 23)
  a = fnH(a, b, c, d, M[9], 0xd9d4d039, 4)
  d = fnH(d, a, b, c, M[12], 0xe6db99e5, 11)
  c = fnH(c, d, a, b, M[15], 0x1fa27cf8, 16)
  b = fnH(b, c, d, a, M[2], 0xc4ac5665, 23)

  a = fnI(a, b, c, d, M[0], 0xf4292244, 6)
  d = fnI(d, a, b, c, M[7], 0x432aff97, 10)
  c = fnI(c, d, a, b, M[14], 0xab9423a7, 15)
  b = fnI(b, c, d, a, M[5], 0xfc93a039, 21)
  a = fnI(a, b, c, d, M[12], 0x655b59c3, 6)
  d = fnI(d, a, b, c, M[3], 0x8f0ccc92, 10)
  c = fnI(c, d, a, b, M[10], 0xffeff47d, 15)
  b = fnI(b, c, d, a, M[1], 0x85845dd1, 21)
  a = fnI(a, b, c, d, M[8], 0x6fa87e4f, 6)
  d = fnI(d, a, b, c, M[15], 0xfe2ce6e0, 10)
  c = fnI(c, d, a, b, M[6], 0xa3014314, 15)
  b = fnI(b, c, d, a, M[13], 0x4e0811a1, 21)
  a = fnI(a, b, c, d, M[4], 0xf7537e82, 6)
  d = fnI(d, a, b, c, M[11], 0xbd3af235, 10)
  c = fnI(c, d, a, b, M[2], 0x2ad7d2bb, 15)
  b = fnI(b, c, d, a, M[9], 0xeb86d391, 21)

  this._a = (this._a + a) | 0
  this._b = (this._b + b) | 0
  this._c = (this._c + c) | 0
  this._d = (this._d + d) | 0
}

MD5.prototype._digest = function () {
  // create padding and handle blocks
  this._block[this._blockOffset++] = 0x80
  if (this._blockOffset > 56) {
    this._block.fill(0, this._blockOffset, 64)
    this._update()
    this._blockOffset = 0
  }

  this._block.fill(0, this._blockOffset, 56)
  this._block.writeUInt32LE(this._length[0], 56)
  this._block.writeUInt32LE(this._length[1], 60)
  this._update()

  // produce result
  var buffer = Buffer.allocUnsafe(16)
  buffer.writeInt32LE(this._a, 0)
  buffer.writeInt32LE(this._b, 4)
  buffer.writeInt32LE(this._c, 8)
  buffer.writeInt32LE(this._d, 12)
  return buffer
}

function rotl (x, n) {
  return (x << n) | (x >>> (32 - n))
}

function fnF (a, b, c, d, m, k, s) {
  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + b) | 0
}

function fnG (a, b, c, d, m, k, s) {
  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + b) | 0
}

function fnH (a, b, c, d, m, k, s) {
  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + b) | 0
}

function fnI (a, b, c, d, m, k, s) {
  return (rotl((a + ((c ^ (b | (~d)))) + m + k) | 0, s) + b) | 0
}

module.exports = MD5

},{"hash-base":82,"inherits":85,"safe-buffer":173}],104:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var y = d * 365.25;

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} [options]
 * @throws {Error} throw an error if val is not a non-empty string or a number
 * @return {String|Number}
 * @api public
 */

module.exports = function(val, options) {
  options = options || {};
  var type = typeof val;
  if (type === 'string' && val.length > 0) {
    return parse(val);
  } else if (type === 'number' && isNaN(val) === false) {
    return options.long ? fmtLong(val) : fmtShort(val);
  }
  throw new Error(
    'val is not a non-empty string or a valid number. val=' +
      JSON.stringify(val)
  );
};

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  str = String(str);
  if (str.length > 100) {
    return;
  }
  var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(
    str
  );
  if (!match) {
    return;
  }
  var n = parseFloat(match[1]);
  var type = (match[2] || 'ms').toLowerCase();
  switch (type) {
    case 'years':
    case 'year':
    case 'yrs':
    case 'yr':
    case 'y':
      return n * y;
    case 'days':
    case 'day':
    case 'd':
      return n * d;
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h;
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m;
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s;
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n;
    default:
      return undefined;
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtShort(ms) {
  if (ms >= d) {
    return Math.round(ms / d) + 'd';
  }
  if (ms >= h) {
    return Math.round(ms / h) + 'h';
  }
  if (ms >= m) {
    return Math.round(ms / m) + 'm';
  }
  if (ms >= s) {
    return Math.round(ms / s) + 's';
  }
  return ms + 'ms';
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtLong(ms) {
  return plural(ms, d, 'day') ||
    plural(ms, h, 'hour') ||
    plural(ms, m, 'minute') ||
    plural(ms, s, 'second') ||
    ms + ' ms';
}

/**
 * Pluralization helper.
 */

function plural(ms, n, name) {
  if (ms < n) {
    return;
  }
  if (ms < n * 1.5) {
    return Math.floor(ms / n) + ' ' + name;
  }
  return Math.ceil(ms / n) + ' ' + name + 's';
}

},{}],105:[function(require,module,exports){
(function (global,Buffer){(function (){

/**
 * index.js
 *
 * a request API compatible with window.fetch
 */

var parse_url = require('url').parse;
var resolve_url = require('url').resolve;
var http = require('http');
var https = require('https');
var zlib = require('zlib');
var stream = require('stream');

var Body = require('./lib/body');
var Response = require('./lib/response');
var Headers = require('./lib/headers');
var Request = require('./lib/request');
var FetchError = require('./lib/fetch-error');

// commonjs
module.exports = Fetch;
// es6 default export compatibility
module.exports.default = module.exports;

/**
 * Fetch class
 *
 * @param   Mixed    url   Absolute url or Request instance
 * @param   Object   opts  Fetch options
 * @return  Promise
 */
function Fetch(url, opts) {

	// allow call as function
	if (!(this instanceof Fetch))
		return new Fetch(url, opts);

	// allow custom promise
	if (!Fetch.Promise) {
		throw new Error('native promise missing, set Fetch.Promise to your favorite alternative');
	}

	Body.Promise = Fetch.Promise;

	var self = this;

	// wrap http.request into fetch
	return new Fetch.Promise(function(resolve, reject) {
		// build request object
		var options = new Request(url, opts);

		if (!options.protocol || !options.hostname) {
			throw new Error('only absolute urls are supported');
		}

		if (options.protocol !== 'http:' && options.protocol !== 'https:') {
			throw new Error('only http(s) protocols are supported');
		}

		var send;
		if (options.protocol === 'https:') {
			send = https.request;
		} else {
			send = http.request;
		}

		// normalize headers
		var headers = new Headers(options.headers);

		if (options.compress) {
			headers.set('accept-encoding', 'gzip,deflate');
		}

		if (!headers.has('user-agent')) {
			headers.set('user-agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)');
		}

		if (!headers.has('connection') && !options.agent) {
			headers.set('connection', 'close');
		}

		if (!headers.has('accept')) {
			headers.set('accept', '*/*');
		}

		// detect form data input from form-data module, this hack avoid the need to pass multipart header manually
		if (!headers.has('content-type') && options.body && typeof options.body.getBoundary === 'function') {
			headers.set('content-type', 'multipart/form-data; boundary=' + options.body.getBoundary());
		}

		// bring node-fetch closer to browser behavior by setting content-length automatically
		if (!headers.has('content-length') && /post|put|patch|delete/i.test(options.method)) {
			if (typeof options.body === 'string') {
				headers.set('content-length', Buffer.byteLength(options.body));
			// detect form data input from form-data module, this hack avoid the need to add content-length header manually
			} else if (options.body && typeof options.body.getLengthSync === 'function') {
				// for form-data 1.x
				if (options.body._lengthRetrievers && options.body._lengthRetrievers.length == 0) {
					headers.set('content-length', options.body.getLengthSync().toString());
				// for form-data 2.x
				} else if (options.body.hasKnownLength && options.body.hasKnownLength()) {
					headers.set('content-length', options.body.getLengthSync().toString());
				}
			// this is only necessary for older nodejs releases (before iojs merge)
			} else if (options.body === undefined || options.body === null) {
				headers.set('content-length', '0');
			}
		}

		options.headers = headers.raw();

		// http.request only support string as host header, this hack make custom host header possible
		if (options.headers.host) {
			options.headers.host = options.headers.host[0];
		}

		// send request
		var req = send(options);
		var reqTimeout;

		if (options.timeout) {
			req.once('socket', function(socket) {
				reqTimeout = setTimeout(function() {
					req.abort();
					reject(new FetchError('network timeout at: ' + options.url, 'request-timeout'));
				}, options.timeout);
			});
		}

		req.on('error', function(err) {
			clearTimeout(reqTimeout);
			reject(new FetchError('request to ' + options.url + ' failed, reason: ' + err.message, 'system', err));
		});

		req.on('response', function(res) {
			clearTimeout(reqTimeout);

			// handle redirect
			if (self.isRedirect(res.statusCode) && options.redirect !== 'manual') {
				if (options.redirect === 'error') {
					reject(new FetchError('redirect mode is set to error: ' + options.url, 'no-redirect'));
					return;
				}

				if (options.counter >= options.follow) {
					reject(new FetchError('maximum redirect reached at: ' + options.url, 'max-redirect'));
					return;
				}

				if (!res.headers.location) {
					reject(new FetchError('redirect location header missing at: ' + options.url, 'invalid-redirect'));
					return;
				}

				// per fetch spec, for POST request with 301/302 response, or any request with 303 response, use GET when following redirect
				if (res.statusCode === 303
					|| ((res.statusCode === 301 || res.statusCode === 302) && options.method === 'POST'))
				{
					options.method = 'GET';
					delete options.body;
					delete options.headers['content-length'];
				}

				options.counter++;

				resolve(Fetch(resolve_url(options.url, res.headers.location), options));
				return;
			}

			// normalize location header for manual redirect mode
			var headers = new Headers(res.headers);
			if (options.redirect === 'manual' && headers.has('location')) {
				headers.set('location', resolve_url(options.url, headers.get('location')));
			}

			// prepare response
			var body = res.pipe(new stream.PassThrough());
			var response_options = {
				url: options.url
				, status: res.statusCode
				, statusText: res.statusMessage
				, headers: headers
				, size: options.size
				, timeout: options.timeout
			};

			// response object
			var output;

			// in following scenarios we ignore compression support
			// 1. compression support is disabled
			// 2. HEAD request
			// 3. no content-encoding header
			// 4. no content response (204)
			// 5. content not modified response (304)
			if (!options.compress || options.method === 'HEAD' || !headers.has('content-encoding') || res.statusCode === 204 || res.statusCode === 304) {
				output = new Response(body, response_options);
				resolve(output);
				return;
			}

			// otherwise, check for gzip or deflate
			var name = headers.get('content-encoding');

			// for gzip
			if (name == 'gzip' || name == 'x-gzip') {
				body = body.pipe(zlib.createGunzip());
				output = new Response(body, response_options);
				resolve(output);
				return;

			// for deflate
			} else if (name == 'deflate' || name == 'x-deflate') {
				// handle the infamous raw deflate response from old servers
				// a hack for old IIS and Apache servers
				var raw = res.pipe(new stream.PassThrough());
				raw.once('data', function(chunk) {
					// see http://stackoverflow.com/questions/37519828
					if ((chunk[0] & 0x0F) === 0x08) {
						body = body.pipe(zlib.createInflate());
					} else {
						body = body.pipe(zlib.createInflateRaw());
					}
					output = new Response(body, response_options);
					resolve(output);
				});
				return;
			}

			// otherwise, use response as-is
			output = new Response(body, response_options);
			resolve(output);
			return;
		});

		// accept string, buffer or readable stream as body
		// per spec we will call tostring on non-stream objects
		if (typeof options.body === 'string') {
			req.write(options.body);
			req.end();
		} else if (options.body instanceof Buffer) {
			req.write(options.body);
			req.end();
		} else if (typeof options.body === 'object' && options.body.pipe) {
			options.body.pipe(req);
		} else if (typeof options.body === 'object') {
			req.write(options.body.toString());
			req.end();
		} else {
			req.end();
		}
	});

};

/**
 * Redirect code matching
 *
 * @param   Number   code  Status code
 * @return  Boolean
 */
Fetch.prototype.isRedirect = function(code) {
	return code === 301 || code === 302 || code === 303 || code === 307 || code === 308;
}

// expose Promise
Fetch.Promise = global.Promise;
Fetch.Response = Response;
Fetch.Headers = Headers;
Fetch.Request = Request;

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./lib/body":106,"./lib/fetch-error":107,"./lib/headers":108,"./lib/request":109,"./lib/response":110,"buffer":47,"http":192,"https":83,"stream":176,"url":212,"zlib":31}],106:[function(require,module,exports){
(function (global,Buffer){(function (){

/**
 * body.js
 *
 * Body interface provides common methods for Request and Response
 */

var convert = require('encoding').convert;
var bodyStream = require('is-stream');
var PassThrough = require('stream').PassThrough;
var FetchError = require('./fetch-error');

module.exports = Body;

/**
 * Body class
 *
 * @param   Stream  body  Readable stream
 * @param   Object  opts  Response options
 * @return  Void
 */
function Body(body, opts) {

	opts = opts || {};

	this.body = body;
	this.bodyUsed = false;
	this.size = opts.size || 0;
	this.timeout = opts.timeout || 0;
	this._raw = [];
	this._abort = false;

}

/**
 * Decode response as json
 *
 * @return  Promise
 */
Body.prototype.json = function() {

	var self = this;

	return this._decode().then(function(buffer) {
		try {
			return JSON.parse(buffer.toString());
		} catch (err) {
			return Body.Promise.reject(new FetchError('invalid json response body at ' + self.url + ' reason: ' + err.message, 'invalid-json'));
		}
	});

};

/**
 * Decode response as text
 *
 * @return  Promise
 */
Body.prototype.text = function() {

	return this._decode().then(function(buffer) {
		return buffer.toString();
	});

};

/**
 * Decode response as buffer (non-spec api)
 *
 * @return  Promise
 */
Body.prototype.buffer = function() {

	return this._decode();

};

/**
 * Decode buffers into utf-8 string
 *
 * @return  Promise
 */
Body.prototype._decode = function() {

	var self = this;

	if (this.bodyUsed) {
		return Body.Promise.reject(new Error('body used already for: ' + this.url));
	}

	this.bodyUsed = true;
	this._bytes = 0;
	this._abort = false;
	this._raw = [];

	return new Body.Promise(function(resolve, reject) {
		var resTimeout;

		// body is string
		if (typeof self.body === 'string') {
			self._bytes = self.body.length;
			self._raw = [new Buffer(self.body)];
			return resolve(self._convert());
		}

		// body is buffer
		if (self.body instanceof Buffer) {
			self._bytes = self.body.length;
			self._raw = [self.body];
			return resolve(self._convert());
		}

		// allow timeout on slow response body
		if (self.timeout) {
			resTimeout = setTimeout(function() {
				self._abort = true;
				reject(new FetchError('response timeout at ' + self.url + ' over limit: ' + self.timeout, 'body-timeout'));
			}, self.timeout);
		}

		// handle stream error, such as incorrect content-encoding
		self.body.on('error', function(err) {
			reject(new FetchError('invalid response body at: ' + self.url + ' reason: ' + err.message, 'system', err));
		});

		// body is stream
		self.body.on('data', function(chunk) {
			if (self._abort || chunk === null) {
				return;
			}

			if (self.size && self._bytes + chunk.length > self.size) {
				self._abort = true;
				reject(new FetchError('content size at ' + self.url + ' over limit: ' + self.size, 'max-size'));
				return;
			}

			self._bytes += chunk.length;
			self._raw.push(chunk);
		});

		self.body.on('end', function() {
			if (self._abort) {
				return;
			}

			clearTimeout(resTimeout);
			resolve(self._convert());
		});
	});

};

/**
 * Detect buffer encoding and convert to target encoding
 * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding
 *
 * @param   String  encoding  Target encoding
 * @return  String
 */
Body.prototype._convert = function(encoding) {

	encoding = encoding || 'utf-8';

	var ct = this.headers.get('content-type');
	var charset = 'utf-8';
	var res, str;

	// header
	if (ct) {
		// skip encoding detection altogether if not html/xml/plain text
		if (!/text\/html|text\/plain|\+xml|\/xml/i.test(ct)) {
			return Buffer.concat(this._raw);
		}

		res = /charset=([^;]*)/i.exec(ct);
	}

	// no charset in content type, peek at response body for at most 1024 bytes
	if (!res && this._raw.length > 0) {
		for (var i = 0; i < this._raw.length; i++) {
			str += this._raw[i].toString()
			if (str.length > 1024) {
				break;
			}
		}
		str = str.substr(0, 1024);
	}

	// html5
	if (!res && str) {
		res = /<meta.+?charset=(['"])(.+?)\1/i.exec(str);
	}

	// html4
	if (!res && str) {
		res = /<meta[\s]+?http-equiv=(['"])content-type\1[\s]+?content=(['"])(.+?)\2/i.exec(str);

		if (res) {
			res = /charset=(.*)/i.exec(res.pop());
		}
	}

	// xml
	if (!res && str) {
		res = /<\?xml.+?encoding=(['"])(.+?)\1/i.exec(str);
	}

	// found charset
	if (res) {
		charset = res.pop();

		// prevent decode issues when sites use incorrect encoding
		// ref: https://hsivonen.fi/encoding-menu/
		if (charset === 'gb2312' || charset === 'gbk') {
			charset = 'gb18030';
		}
	}

	// turn raw buffers into a single utf-8 buffer
	return convert(
		Buffer.concat(this._raw)
		, encoding
		, charset
	);

};

/**
 * Clone body given Res/Req instance
 *
 * @param   Mixed  instance  Response or Request instance
 * @return  Mixed
 */
Body.prototype._clone = function(instance) {
	var p1, p2;
	var body = instance.body;

	// don't allow cloning a used body
	if (instance.bodyUsed) {
		throw new Error('cannot clone body after it is used');
	}

	// check that body is a stream and not form-data object
	// note: we can't clone the form-data object without having it as a dependency
	if (bodyStream(body) && typeof body.getBoundary !== 'function') {
		// tee instance body
		p1 = new PassThrough();
		p2 = new PassThrough();
		body.pipe(p1);
		body.pipe(p2);
		// set instance body to teed body and return the other teed body
		instance.body = p1;
		body = p2;
	}

	return body;
}

// expose Promise
Body.Promise = global.Promise;

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./fetch-error":107,"buffer":47,"encoding":58,"is-stream":87,"stream":176}],107:[function(require,module,exports){

/**
 * fetch-error.js
 *
 * FetchError interface for operational errors
 */

module.exports = FetchError;

/**
 * Create FetchError instance
 *
 * @param   String      message      Error message for human
 * @param   String      type         Error type for machine
 * @param   String      systemError  For Node.js system error
 * @return  FetchError
 */
function FetchError(message, type, systemError) {

	this.name = this.constructor.name;
	this.message = message;
	this.type = type;

	// when err.type is `system`, err.code contains system error code
	if (systemError) {
		this.code = this.errno = systemError.code;
	}

	// hide custom error implementation details from end-users
	Error.captureStackTrace(this, this.constructor);
}

require('util').inherits(FetchError, Error);

},{"util":217}],108:[function(require,module,exports){

/**
 * headers.js
 *
 * Headers class offers convenient helpers
 */

module.exports = Headers;

/**
 * Headers class
 *
 * @param   Object  headers  Response headers
 * @return  Void
 */
function Headers(headers) {

	var self = this;
	this._headers = {};

	// Headers
	if (headers instanceof Headers) {
		headers = headers.raw();
	}

	// plain object
	for (var prop in headers) {
		if (!headers.hasOwnProperty(prop)) {
			continue;
		}

		if (typeof headers[prop] === 'string') {
			this.set(prop, headers[prop]);

		} else if (typeof headers[prop] === 'number' && !isNaN(headers[prop])) {
			this.set(prop, headers[prop].toString());

		} else if (Array.isArray(headers[prop])) {
			headers[prop].forEach(function(item) {
				self.append(prop, item.toString());
			});
		}
	}

}

/**
 * Return first header value given name
 *
 * @param   String  name  Header name
 * @return  Mixed
 */
Headers.prototype.get = function(name) {
	var list = this._headers[name.toLowerCase()];
	return list ? list[0] : null;
};

/**
 * Return all header values given name
 *
 * @param   String  name  Header name
 * @return  Array
 */
Headers.prototype.getAll = function(name) {
	if (!this.has(name)) {
		return [];
	}

	return this._headers[name.toLowerCase()];
};

/**
 * Iterate over all headers
 *
 * @param   Function  callback  Executed for each item with parameters (value, name, thisArg)
 * @param   Boolean   thisArg   `this` context for callback function
 * @return  Void
 */
Headers.prototype.forEach = function(callback, thisArg) {
	Object.getOwnPropertyNames(this._headers).forEach(function(name) {
		this._headers[name].forEach(function(value) {
			callback.call(thisArg, value, name, this)
		}, this)
	}, this)
}

/**
 * Overwrite header values given name
 *
 * @param   String  name   Header name
 * @param   String  value  Header value
 * @return  Void
 */
Headers.prototype.set = function(name, value) {
	this._headers[name.toLowerCase()] = [value];
};

/**
 * Append a value onto existing header
 *
 * @param   String  name   Header name
 * @param   String  value  Header value
 * @return  Void
 */
Headers.prototype.append = function(name, value) {
	if (!this.has(name)) {
		this.set(name, value);
		return;
	}

	this._headers[name.toLowerCase()].push(value);
};

/**
 * Check for header name existence
 *
 * @param   String   name  Header name
 * @return  Boolean
 */
Headers.prototype.has = function(name) {
	return this._headers.hasOwnProperty(name.toLowerCase());
};

/**
 * Delete all header values given name
 *
 * @param   String  name  Header name
 * @return  Void
 */
Headers.prototype['delete'] = function(name) {
	delete this._headers[name.toLowerCase()];
};

/**
 * Return raw headers (non-spec api)
 *
 * @return  Object
 */
Headers.prototype.raw = function() {
	return this._headers;
};

},{}],109:[function(require,module,exports){

/**
 * request.js
 *
 * Request class contains server only options
 */

var parse_url = require('url').parse;
var Headers = require('./headers');
var Body = require('./body');

module.exports = Request;

/**
 * Request class
 *
 * @param   Mixed   input  Url or Request instance
 * @param   Object  init   Custom options
 * @return  Void
 */
function Request(input, init) {
	var url, url_parsed;

	// normalize input
	if (!(input instanceof Request)) {
		url = input;
		url_parsed = parse_url(url);
		input = {};
	} else {
		url = input.url;
		url_parsed = parse_url(url);
	}

	// normalize init
	init = init || {};

	// fetch spec options
	this.method = init.method || input.method || 'GET';
	this.redirect = init.redirect || input.redirect || 'follow';
	this.headers = new Headers(init.headers || input.headers || {});
	this.url = url;

	// server only options
	this.follow = init.follow !== undefined ?
		init.follow : input.follow !== undefined ?
		input.follow : 20;
	this.compress = init.compress !== undefined ?
		init.compress : input.compress !== undefined ?
		input.compress : true;
	this.counter = init.counter || input.counter || 0;
	this.agent = init.agent || input.agent;

	Body.call(this, init.body || this._clone(input), {
		timeout: init.timeout || input.timeout || 0,
		size: init.size || input.size || 0
	});

	// server request options
	this.protocol = url_parsed.protocol;
	this.hostname = url_parsed.hostname;
	this.port = url_parsed.port;
	this.path = url_parsed.path;
	this.auth = url_parsed.auth;
}

Request.prototype = Object.create(Body.prototype);

/**
 * Clone this request
 *
 * @return  Request
 */
Request.prototype.clone = function() {
	return new Request(this);
};

},{"./body":106,"./headers":108,"url":212}],110:[function(require,module,exports){

/**
 * response.js
 *
 * Response class provides content decoding
 */

var http = require('http');
var Headers = require('./headers');
var Body = require('./body');

module.exports = Response;

/**
 * Response class
 *
 * @param   Stream  body  Readable stream
 * @param   Object  opts  Response options
 * @return  Void
 */
function Response(body, opts) {

	opts = opts || {};

	this.url = opts.url;
	this.status = opts.status || 200;
	this.statusText = opts.statusText || http.STATUS_CODES[this.status];
	this.headers = new Headers(opts.headers);
	this.ok = this.status >= 200 && this.status < 300;

	Body.call(this, body, opts);

}

Response.prototype = Object.create(Body.prototype);

/**
 * Clone this response
 *
 * @return  Response
 */
Response.prototype.clone = function() {
	return new Response(this._clone(this), {
		url: this.url
		, status: this.status
		, statusText: this.statusText
		, headers: this.headers
		, ok: this.ok
	});
};

},{"./body":106,"./headers":108,"http":192}],111:[function(require,module,exports){
'use strict'

var Client = require('./lib/Client')
var SASL = require('./lib/sasl')
var core = require('node-xmpp-core')

module.exports = Client
module.exports.Client = Client
module.exports.SASL = SASL

core.exportCoreUtils(module.exports)

},{"./lib/Client":112,"./lib/sasl":120,"node-xmpp-core":123}],112:[function(require,module,exports){
(function (__dirname){(function (){
'use strict'

var Session = require('./session')
var core = require('node-xmpp-core')
var JID = core.JID
var Stanza = core.Stanza
var Element = core.Element
var inherits = core.inherits
var sasl = require('./sasl')
var Anonymous = require('./authentication/anonymous')
var Plain = require('./authentication/plain')
var DigestMD5 = require('./authentication/digestmd5')
var XOAuth2 = require('./authentication/xoauth2')
var External = require('./authentication/external')
var exec = require('child_process').exec
var debug = require('debug')('xmpp:client')
var path = require('path')

var NS_CLIENT = 'jabber:client'
var NS_REGISTER = 'jabber:iq:register'
var NS_XMPP_SASL = 'urn:ietf:params:xml:ns:xmpp-sasl'
var NS_XMPP_BIND = 'urn:ietf:params:xml:ns:xmpp-bind'
var NS_XMPP_SESSION = 'urn:ietf:params:xml:ns:xmpp-session'

var STATE_PREAUTH = 0
var STATE_AUTH = 1
var STATE_AUTHED = 2
var STATE_BIND = 3
var STATE_SESSION = 4
var STATE_ONLINE = 5

var IQID_SESSION = 'sess'
var IQID_BIND = 'bind'

var decode64, encode64, Buffer
if (typeof btoa === 'undefined') {
  var btoa = null
  var atob = null
}

if (typeof btoa === 'function') {
  decode64 = function (encoded) {
    return atob(encoded)
  }
} else {
  Buffer = require('buffer').Buffer
  decode64 = function (encoded) {
    return (new Buffer(encoded, 'base64')).toString('utf8')
  }
}
if (typeof atob === 'function') {
  encode64 = function (decoded) {
    return btoa(decoded)
  }
} else {
  Buffer = require('buffer').Buffer
  encode64 = function (decoded) {
    return (new Buffer(decoded, 'utf8')).toString('base64')
  }
}

/**
 * params object:
 *   jid: String (required)
 *   password: String (required)
 *   host: String (optional)
 *   port: Number (optional)
 *   reconnect: Boolean (optional)
 *   autostart: Boolean (optional) - if we start connecting to a given port
 *   register: Boolean (option) - register account before authentication
 *   legacySSL: Boolean (optional) - connect to the legacy SSL port, requires at least the host to be specified
 *   credentials: Dictionary (optional) - TLS or SSL key and certificate credentials
 *   actAs: String (optional) - if admin user act on behalf of another user (just user)
 *   disallowTLS: Boolean (optional) - prevent upgrading the connection to a secure one via TLS
 *   preferred: String (optional) - Preferred SASL mechanism to use
 *   bosh.url: String (optional) - BOSH endpoint to use
 *   bosh.prebind: Function(error, data) (optional) - Just prebind a new BOSH session for browser client use
 *            error String - Result of XMPP error. Ex : [Error: XMPP authentication failure]
 *            data Object - Result of XMPP BOSH connection.
 *
 * Examples:
 *   var cl = new xmpp.Client({
 *       jid: "me@example.com",
 *       password: "secret"
 *   })
 *   var gtalk = new xmpp.Client({
 *       jid: 'me@gmail.com',
 *       oauth2_token: 'xxxx.xxxxxxxxxxx', // from OAuth2
 *       oauth2_auth: 'http://www.google.com/talk/protocol/auth',
 *       host: 'talk.google.com'
 *   })
 *   var prebind = new xmpp.Client({
 *       jid: "me@example.com",
 *       password: "secret",
 *       bosh: {
 *           url: "http://example.com/http-bind",
 *           prebind: function(error, data) {
 *               if (error) {}
 *               res.send({ rid: data.rid, sid: data.sid })
 *           }
 *       }
 *   })
 *
 * Example SASL EXTERNAL:
 *
 * var myCredentials = {
 *   // These are necessary only if using the client certificate authentication
 *   key: fs.readFileSync('key.pem'),
 *   cert: fs.readFileSync('cert.pem'),
 *   // passphrase: 'optional'
 * }
 * var cl = new xmppClient({
 *     jid: "me@example.com",
 *     credentials: myCredentials
 *     preferred: 'EXTERNAL' // not really required, but possible
 * })
 *
 */
function Client (options) {
  this.options = {}
  if (options) this.options = options
  this.availableSaslMechanisms = [
    XOAuth2, External, DigestMD5, Plain, Anonymous
  ]

  if (this.options.autostart !== false) this.connect()
}

inherits(Client, Session)

Client.NS_CLIENT = NS_CLIENT

Client.prototype.connect = function () {
  if (this.options.bosh && this.options.bosh.prebind) {
    return this._connectViaBosh()
  }
  this._useStandardConnect()
}

Client.prototype._useStandardConnect = function () {
  this.options.xmlns = NS_CLIENT
  delete this.did_bind
  delete this.did_session

  this.state = STATE_PREAUTH
  this.on('end', function () {
    this.state = STATE_PREAUTH
    delete this.did_bind
    delete this.did_session
  })

  Session.call(this, this.options)
  this.options.jid = this.jid

  this.connection.on('disconnect', function (error) {
    this.state = STATE_PREAUTH
    if (!this.connection.reconnect) {
      if (error) this.emit('error', error)
      this.emit('offline')
    }
    delete this.did_bind
    delete this.did_session
  }.bind(this))

  /* If server and client have multiple possible auth mechanisms
   * we try to select the preferred one
   */
  if (this.options.preferred) {
    this.preferredSaslMechanism = this.options.preferred
  } else {
    this.preferredSaslMechanism = 'DIGEST-MD5'
  }

  var mechs = sasl.detectMechanisms(this.options, this.availableSaslMechanisms)
  this.availableSaslMechanisms = mechs
}

Client.prototype._connectViaBosh = function () {
  debug('load bosh prebind')
  var cb = this.options.bosh.prebind
  delete this.options.bosh.prebind
  var cmd = 'node ' + path.join(__dirname, 'prebind.js') + ' ' + encodeURI(JSON.stringify(this.options))
  exec(
    cmd,
    function (error, stdout, stderr) {
      if (error) {
        cb(error, null)
      } else {
        var r = stdout.match(/rid:+[ 0-9]*/i)
        var s = stdout.match(/sid:+[ a-z+'"-_A-Z+0-9]*/i)
        if (!r || !s) {
          return cb(stderr)
        }
        r = (r[0].split(':'))[1].trim()

        s = (s[0].split(':'))[1]
          .replace("'", '')
          .replace("'", '')
          .trim()
        if (r && s) {
          return cb(null, { rid: r, sid: s })
        }
        cb(stderr)
      }
    }
  )
}

Client.prototype.onStanza = function (stanza) {
  /* Actually, we shouldn't wait for <stream:features/> if
   * this.streamAttrs.version is missing, but who uses pre-XMPP-1.0
   * these days anyway?
   */
  if (stanza.name === 'stream:error') {
    return this._handleStreamError(stanza)
  }
  if ((this.state !== STATE_ONLINE) && stanza.is('features')) {
    this.streamFeatures = stanza
    return this.useFeatures()
  }
  this._handleStanza(stanza)
}

Client.prototype._handleStanza = function (stanza) {
  switch (this.state) {
    case STATE_ONLINE:
      this.emit('stanza', stanza)
      break
    case STATE_PREAUTH:
      this.emit('stanza:preauth', stanza)
      break
    case STATE_AUTH:
      this._handleAuthState(stanza)
      break
    case STATE_BIND:
      if (stanza.is('iq') && (stanza.attrs.id === IQID_BIND)) {
        this._handleBindState(stanza)
      }
      break
    case STATE_SESSION:
      if ((stanza.is('iq') === true) && (stanza.attrs.id === IQID_SESSION)) {
        this._handleSessionState(stanza)
      }
      break
  }
}

Client.prototype._handleStreamError = function (stanza) {
  if (!this.reconnect) {
    this.emit('error', stanza)
  }
}

Client.prototype._handleSessionState = function (stanza) {
  if (stanza.attrs.type === 'result') {
    this.state = STATE_AUTHED
    this.did_session = true

    /* no stream restart, but next feature (most probably
       we'll go online next) */
    this.useFeatures()
  } else {
    this.emit('error', 'Cannot bind resource')
  }
}

Client.prototype._handleBindState = function (stanza) {
  if (stanza.attrs.type === 'result') {
    this.state = STATE_AUTHED
    this.did_bind = true

    var bindEl = stanza.getChild('bind', NS_XMPP_BIND)
    if (bindEl && bindEl.getChild('jid')) {
      this.jid = new JID(bindEl.getChild('jid').getText())
    }

    /* no stream restart, but next feature */
    this.useFeatures()
  } else {
    this.emit('error', 'Cannot bind resource')
  }
}

Client.prototype._handleAuthState = function (stanza) {
  if (stanza.is('challenge', NS_XMPP_SASL)) {
    var challengeMsg = decode64(stanza.getText())
    var responseMsg = encode64(this.mech.challenge(challengeMsg))
    var response = new Element('response', {xmlns: NS_XMPP_SASL}).t(responseMsg)
    this.send(response)
  } else if (stanza.is('success', NS_XMPP_SASL)) {
    this.mech = null
    this.state = STATE_AUTHED
    this.emit('auth')
  } else {
    this.emit('error', 'XMPP authentication failure')
  }
}

Client.prototype._handlePreAuthState = function () {
  this.state = STATE_AUTH
  var offeredMechs = this.streamFeatures.getChild('mechanisms', NS_XMPP_SASL).getChildren('mechanism', NS_XMPP_SASL).map(function (el) { return el.getText() })
  this.mech = sasl.selectMechanism(
    offeredMechs,
    this.preferredSaslMechanism,
    this.availableSaslMechanisms
  )
  if (this.mech) {
    this.mech.authzid = this.jid.bare().toString()
    this.mech.authcid = this.jid.local
    this.mech.password = this.password
    this.mech.api_key = this.api_key
    this.mech.access_token = this.access_token
    this.mech.oauth2_token = this.oauth2_token
    this.mech.oauth2_auth = this.oauth2_auth
    this.mech.realm = this.jid.domain // anything?
    if (this.actAs) this.mech.actAs = this.actAs.user
    this.mech.digest_uri = 'xmpp/' + this.jid.domain
    var authMsg = encode64(this.mech.auth())
    var attrs = this.mech.authAttrs()
    attrs.xmlns = NS_XMPP_SASL
    attrs.mechanism = this.mech.name
    this.send(new Element('auth', attrs).t(authMsg))
  } else {
    this.emit('error', new Error('No usable SASL mechanism'))
  }
}

/**
 * Either we just received <stream:features/>, or we just enabled a
 * feature and are looking for the next.
 */
Client.prototype.useFeatures = function () {
  if ((this.state === STATE_PREAUTH) && this.register) {
    delete this.register
    this.doRegister()
  } else if ((this.state === STATE_PREAUTH) &&
    this.streamFeatures.getChild('mechanisms', NS_XMPP_SASL)) {
    this._handlePreAuthState()
  } else if ((this.state === STATE_AUTHED) &&
    !this.did_bind &&
    this.streamFeatures.getChild('bind', NS_XMPP_BIND)) {
    this.state = STATE_BIND
    var bindEl = new Stanza('iq', {
      type: 'set',
      id: IQID_BIND
    }).c('bind', { xmlns: NS_XMPP_BIND })
    if (this.jid.resource) {
      bindEl.c('resource').t(this.jid.resource)
    }
    this.send(bindEl)
  } else if ((this.state === STATE_AUTHED) &&
    !this.did_session &&
    this.streamFeatures.getChild('session', NS_XMPP_SESSION)) {
    this.state = STATE_SESSION
    var stanza = new Stanza('iq', {
      type: 'set',
      to: this.jid.domain,
      id: IQID_SESSION
    }).c('session', { xmlns: NS_XMPP_SESSION })
    this.send(stanza)
  } else if (this.state === STATE_AUTHED) {
    /* Ok, we're authenticated and all features have been
       processed */
    this.state = STATE_ONLINE
    this.emit('online', { jid: this.jid })
  }
}

Client.prototype.doRegister = function () {
  var id = 'register' + Math.ceil(Math.random() * 99999)
  var iq = new Stanza('iq', {
    type: 'set',
    id: id,
    to: this.jid.domain
  }).c('query', {xmlns: NS_REGISTER})
    .c('username').t(this.jid.local).up()
    .c('password').t(this.password)
  this.send(iq)

  var self = this
  var onReply = function (reply) {
    if (reply.is('iq') && (reply.attrs.id === id)) {
      self.removeListener('stanza', onReply)

      if (reply.attrs.type === 'result') {
        /* Registration successful, proceed to auth */
        self.useFeatures()
      } else {
        self.emit('error', new Error('Registration error'))
      }
    }
  }
  this.on('stanza:preauth', onReply)
}

/**
 * returns all registered sasl mechanisms
 */
Client.prototype.getSaslMechanisms = function () {
  return this.availableSaslMechanisms
}

/**
 * removes all registered sasl mechanisms
 */
Client.prototype.clearSaslMechanism = function () {
  this.availableSaslMechanisms = []
}

/**
 * register a new sasl mechanism
 */
Client.prototype.registerSaslMechanism = function (method) {
  // check if method is registered
  if (this.availableSaslMechanisms.indexOf(method) === -1) {
    this.availableSaslMechanisms.push(method)
  }
}

/**
 * unregister an existing sasl mechanism
 */
Client.prototype.unregisterSaslMechanism = function (method) {
  // check if method is registered
  var index = this.availableSaslMechanisms.indexOf(method)
  if (index >= 0) {
    this.availableSaslMechanisms = this.availableSaslMechanisms.splice(index, 1)
  }
}

module.exports = Client

}).call(this)}).call(this,"/node_modules/node-xmpp-client/lib")
},{"./authentication/anonymous":113,"./authentication/digestmd5":114,"./authentication/external":115,"./authentication/plain":117,"./authentication/xoauth2":118,"./sasl":120,"./session":121,"buffer":47,"child_process":32,"debug":56,"node-xmpp-core":123,"path":29}],113:[function(require,module,exports){
'use strict'

var Mechanism = require('./mechanism')
var inherits = require('node-xmpp-core').inherits

/**
 * @see http://tools.ietf.org/html/rfc4505
 * @see http://xmpp.org/extensions/xep-0175.html
 */
function Anonymous () {}

inherits(Anonymous, Mechanism)

Anonymous.prototype.name = 'ANONYMOUS'

Anonymous.prototype.auth = function () {
  return this.authzid
}

Anonymous.prototype.match = function () {
  return true
}

module.exports = Anonymous

},{"./mechanism":116,"node-xmpp-core":123}],114:[function(require,module,exports){
'use strict'

var inherits = require('node-xmpp-core').inherits
var Mechanism = require('./mechanism')
var crypto = require('crypto')
var MD5 = require('md5.js')

/**
 * Hash a string
 */
function md5 (s, encoding) {
  // we ignore crypto in the browser field of package.json
  var hash = crypto.createHash ? crypto.createHash('md5') : new MD5()
  return hash.update(s, 'binary').digest(encoding || 'binary')
}
function md5Hex (s) {
  return md5(s, 'hex')
}

/**
 * Parse SASL serialization
 */
function parseDict (s) {
  var result = {}
  while (s) {
    var m
    if ((m = /^(.+?)=(.*?[^\\]),\s*(.*)/.exec(s))) {
      result[m[1]] = m[2].replace(/"/g, '')
      s = m[3]
    } else if ((m = /^(.+?)=(.+?),\s*(.*)/.exec(s))) {
      result[m[1]] = m[2]
      s = m[3]
    } else if ((m = /^(.+?)="(.*?[^\\])"$/.exec(s))) {
      result[m[1]] = m[2]
      s = m[3]
    } else if ((m = /^(.+?)=(.+?)$/.exec(s))) {
      result[m[1]] = m[2]
      s = m[3]
    } else {
      s = null
    }
  }
  return result
}

/**
 * SASL serialization
 */
function encodeDict (dict) {
  var s = ''
  for (var k in dict) {
    var v = dict[k]
    if (v) s += ',' + k + '="' + v + '"'
  }
  return s.substr(1) // without first ','
}

/**
 * Right-justify a string,
 * eg. pad with 0s
 */
function rjust (s, targetLen, padding) {
  while (s.length < targetLen) {
    s = padding + s
  }
  return s
}

/**
 * Generate a string of 8 digits
 * (number used once)
 */
function generateNonce () {
  var result = ''
  for (var i = 0; i < 8; i++) {
    result += String.fromCharCode(48 +
      Math.ceil(Math.random() * 10))
  }
  return result
}

/**
 * @see http://tools.ietf.org/html/rfc2831
 * @see http://wiki.xmpp.org/web/SASLandDIGEST-MD5
 */
function DigestMD5 () {
  this.nonce_count = 0
  this.cnonce = generateNonce()
  this.authcid = null
  this.actAs = null
  this.realm = null
  this.password = null
}

inherits(DigestMD5, Mechanism)

DigestMD5.prototype.name = 'DIGEST-MD5'

DigestMD5.prototype.auth = function () {
  return ''
}

DigestMD5.prototype.getNC = function () {
  return rjust(this.nonce_count.toString(), 8, '0')
}

DigestMD5.prototype.responseValue = function (s) {
  var dict = parseDict(s)
  if (dict.realm) {
    this.realm = dict.realm
  }

  var value
  if (dict.nonce && dict.qop) {
    this.nonce_count++
    var a1 = md5(this.authcid + ':' +
        this.realm + ':' +
        this.password) + ':' +
      dict.nonce + ':' +
      this.cnonce
    if (this.actAs) a1 += ':' + this.actAs

    var a2 = 'AUTHENTICATE:' + this.digest_uri
    if ((dict.qop === 'auth-int') || (dict.qop === 'auth-conf')) {
      a2 += ':00000000000000000000000000000000'
    }

    value = md5Hex(md5Hex(a1) + ':' +
      dict.nonce + ':' +
      this.getNC() + ':' +
      this.cnonce + ':' +
      dict.qop + ':' +
      md5Hex(a2))
  }
  return value
}

DigestMD5.prototype.challenge = function (s) {
  var dict = parseDict(s)
  if (dict.realm) {
    this.realm = dict.realm
  }

  var response
  if (dict.nonce && dict.qop) {
    var responseValue = this.responseValue(s)
    response = {
      username: this.authcid,
      realm: this.realm,
      nonce: dict.nonce,
      cnonce: this.cnonce,
      nc: this.getNC(),
      qop: dict.qop,
      'digest-uri': this.digest_uri,
      response: responseValue,
      charset: 'utf-8'
    }
    if (this.actAs) response.authzid = this.actAs
  } else if (dict.rspauth) {
    return ''
  }
  return encodeDict(response)
}

DigestMD5.prototype.serverChallenge = function () {
  var dict = {}
  dict.realm = ''
  this.nonce = dict.nonce = generateNonce()
  dict.qop = 'auth'
  this.charset = dict.charset = 'utf-8'
  dict.algorithm = 'md5-sess'
  return encodeDict(dict)
}

// Used on the server to check for auth!
DigestMD5.prototype.response = function (s) {
  var dict = parseDict(s)
  this.authcid = dict.username

  if (dict.nonce !== this.nonce) return false
  if (!dict.cnonce) return false

  this.cnonce = dict.cnonce
  if (this.charset !== dict.charset) return false

  this.response = dict.response
  return true
}

DigestMD5.prototype.match = function (options) {
  if (options.password) return true
  return false
}

module.exports = DigestMD5

},{"./mechanism":116,"crypto":29,"md5.js":103,"node-xmpp-core":123}],115:[function(require,module,exports){
'use strict'

var inherits = require('node-xmpp-core').inherits
var Mechanism = require('./mechanism')

/**
 * @see http://xmpp.org/extensions/xep-0178.html
 */
function External () {}

inherits(External, Mechanism)

External.prototype.name = 'EXTERNAL'

External.prototype.auth = function () {
  return (this.authzid)
}

External.prototype.match = function (options) {
  if (options.credentials) return true
  return false
}

module.exports = External

},{"./mechanism":116,"node-xmpp-core":123}],116:[function(require,module,exports){
'use strict'

/**
 * Each implemented mechanism offers multiple methods
 * - name : name of the auth method
 * - auth :
 * - match: checks if the client has enough options to
 *          offer this mechanis to xmpp servers
 * - authServer: takes a stanza and extracts the information
 */

var inherits = require('node-xmpp-core').inherits
var EventEmitter = require('events').EventEmitter

// Mechanisms
function Mechanism () {}

inherits(Mechanism, EventEmitter)

Mechanism.prototype.authAttrs = function () {
  return {}
}

module.exports = Mechanism

},{"events":80,"node-xmpp-core":123}],117:[function(require,module,exports){
'use strict'

var inherits = require('node-xmpp-core').inherits
var Mechanism = require('./mechanism')

function Plain () {}

inherits(Plain, Mechanism)

Plain.prototype.name = 'PLAIN'

Plain.prototype.auth = function () {
  return this.authzid + '\0' +
  this.authcid + '\0' +
  this.password
}

Plain.prototype.match = function (options) {
  if (options.password) return true
  return false
}

module.exports = Plain

},{"./mechanism":116,"node-xmpp-core":123}],118:[function(require,module,exports){
'use strict'

var inherits = require('node-xmpp-core').inherits
var Mechanism = require('./mechanism')

/**
 * @see https://developers.google.com/talk/jep_extensions/oauth
 */
function XOAuth2 () {
  this.oauth2_auth = null
  this.authzid = null
}

inherits(XOAuth2, Mechanism)

XOAuth2.prototype.name = 'X-OAUTH2'
XOAuth2.prototype.NS_GOOGLE_AUTH = 'http://www.google.com/talk/protocol/auth'

XOAuth2.prototype.auth = function () {
  return '\0' + this.authzid + '\0' + this.oauth2_token
}

XOAuth2.prototype.authAttrs = function () {
  return {
    'auth:service': 'oauth2',
    'xmlns:auth': this.oauth2_auth
  }
}

XOAuth2.prototype.match = function (options) {
  return (options.oauth2_auth === XOAuth2.prototype.NS_GOOGLE_AUTH)
}

module.exports = XOAuth2

},{"./mechanism":116,"node-xmpp-core":123}],119:[function(require,module,exports){
(function (process){(function (){
'use strict'

var EventEmitter = require('events').EventEmitter
var core = require('node-xmpp-core')
var inherits = core.inherits
var ltx = core.ltx
var request = require('request')
var debug = require('debug')('xmpp:client:bosh')

function BOSHConnection (opts) {
  var that = this
  EventEmitter.call(this)

  this.boshURL = opts.bosh.url
  this.jid = opts.jid
  this.wait = opts.bosh.wait || 60
  this.xmlnsAttrs = {
    xmlns: 'http://jabber.org/protocol/httpbind',
    'xmlns:xmpp': 'urn:xmpp:xbosh',
    'xmlns:stream': 'http://etherx.jabber.org/streams'
  }
  if (opts.xmlns) {
    for (var prefix in opts.xmlns) {
      if (prefix) {
        this.xmlnsAttrs['xmlns:' + prefix] = opts.xmlns[prefix]
      } else {
        this.xmlnsAttrs.xmlns = opts.xmlns[prefix]
      }
    }
  }
  this.currentRequests = 0
  this.queue = []
  this.rid = Math.ceil(Math.random() * 9999999999)

  this.request({
    to: this.jid.domain,
    ver: '1.6',
    wait: this.wait,
    hold: '1',
    content: this.contentType,
    'xmpp:version': '1.0'
  }, [], function (err, bodyEl) {
    if (err) {
      that.emit('error', err)
    } else if (bodyEl && bodyEl.attrs) {
      that.sid = bodyEl.attrs.sid
      that.maxRequests = parseInt(bodyEl.attrs.requests, 10) || 2
      if (that.sid && (that.maxRequests > 0)) {
        that.emit('connect')
        that.processResponse(bodyEl)
        process.nextTick(that.mayRequest.bind(that))
      } else {
        that.emit('error', 'Invalid parameters')
      }
    }
  })
}

inherits(BOSHConnection, EventEmitter)

BOSHConnection.prototype.contentType = 'text/xml; charset=utf-8'

BOSHConnection.prototype.send = function (stanza) {
  this.queue.push(stanza.root())
  process.nextTick(this.mayRequest.bind(this))
}

BOSHConnection.prototype.startStream = function () {
  var that = this

  this.rid++
  this.request({
    to: this.jid.domain,
    'xmpp:restart': 'true'
  },
    [],
    function (err, bodyEl) {
      if (err) {
        that.emit('error', err)
        that.emit('disconnect')
        that.emit('end')
        delete that.sid
        that.emit('close')
      } else {
        that.streamOpened = true
        if (bodyEl) that.processResponse(bodyEl)

        process.nextTick(that.mayRequest.bind(that))
      }
    })
}

BOSHConnection.prototype.processResponse = function (bodyEl) {
  debug('process bosh server response ' + bodyEl.toString())
  if (bodyEl && bodyEl.children) {
    for (var i = 0; i < bodyEl.children.length; i++) {
      var child = bodyEl.children[i]
      if (child.name && child.attrs && child.children) {
        this.emit('stanza', child)
      }
    }
  }
  if (bodyEl && (bodyEl.attrs.type === 'terminate')) {
    if (!this.shutdown || bodyEl.attrs.condition) {
      this.emit('error', new Error(bodyEl.attrs.condition || 'Session terminated'))
    }
    this.emit('disconnect')
    this.emit('end')
    this.emit('close')
  }
}

BOSHConnection.prototype.mayRequest = function () {
  var canRequest =
  /* Must have a session already */
  this.sid &&
    /* We can only receive when one request is in flight */
    ((this.currentRequests === 0) ||
    /* Is there something to send, and are we allowed? */
    (((this.queue.length > 0) && (this.currentRequests < this.maxRequests)))
  )

  if (!canRequest) return

  var stanzas = this.queue
  this.queue = []
  this.rid++
  this.request({}, stanzas, function (err, bodyEl) {
    if (err) {
      this.emit('error', err)
      this.emit('disconnect')
      this.emit('end')
      delete this.sid
      this.emit('close')
    } else {
      if (bodyEl) this.processResponse(bodyEl)

      process.nextTick(this.mayRequest.bind(this))
    }
  }.bind(this))
}

BOSHConnection.prototype.end = function (stanzas) {
  stanzas = stanzas || []
  if (typeof stanzas !== Array) stanzas = [stanzas]

  stanzas = this.queue.concat(stanzas)
  this.shutdown = true
  this.queue = []
  this.rid++
  this.request({ type: 'terminate' }, stanzas, function (err, bodyEl) {
    if (err) {
    } else if (bodyEl) {
      this.processResponse(bodyEl)
    }

    this.emit('disconnect')
    this.emit('end')
    delete this.sid
    this.emit('close')
  }.bind(this))
}

BOSHConnection.prototype.maxHTTPRetries = 5

BOSHConnection.prototype.request = function (attrs, children, cb, retry) {
  var that = this
  retry = retry || 0

  attrs.rid = this.rid.toString()
  if (this.sid) attrs.sid = this.sid

  for (var k in this.xmlnsAttrs) {
    attrs[k] = this.xmlnsAttrs[k]
  }
  var boshEl = new ltx.Element('body', attrs)
  for (var i = 0; i < children.length; i++) {
    boshEl.cnode(children[i])
  }

  debug('send bosh request:' + boshEl.toString())

  request({
    uri: this.boshURL,
    method: 'POST',
    headers: { 'Content-Type': this.contentType },
    body: boshEl.toString()
  },
    function (err, res, body) {
      that.currentRequests--

      if (err) {
        if (retry < that.maxHTTPRetries) {
          return that.request(attrs, children, cb, retry + 1)
        } else {
          return cb(err)
        }
      }
      if ((res.statusCode < 200) || (res.statusCode >= 400)) {
        return cb(new Error('HTTP status ' + res.statusCode))
      }

      var bodyEl
      try {
        bodyEl = ltx.parse(body)
      } catch (e) {
        return cb(e)
      }

      if (bodyEl &&
        (bodyEl.attrs.type === 'terminate') &&
        bodyEl.attrs.condition) {
        cb(new Error(bodyEl.attrs.condition))
      } else if (bodyEl) {
        cb(null, bodyEl)
      } else {
        cb(new Error('no <body/>'))
      }
    }
  )
  this.currentRequests++
}

module.exports = BOSHConnection

}).call(this)}).call(this,require('_process'))
},{"_process":152,"debug":56,"events":80,"node-xmpp-core":123,"request":28}],120:[function(require,module,exports){
'use strict'

var Mechanism = require('./authentication/mechanism')

/**
 * Available methods for client-side authentication (Client)
 * @param  Array offeredMechs  methods offered by server
 * @param  Array preferredMech preferred methods by client
 * @param  Array availableMech available methods on client
 */
function selectMechanism (offeredMechs, preferredMech, availableMech) {
  var mechClasses = []
  var byName = {}
  var Mech
  if (Array.isArray(availableMech)) {
    mechClasses = mechClasses.concat(availableMech)
  }
  mechClasses.forEach(function (mechClass) {
    byName[mechClass.prototype.name] = mechClass
  })
  /* Any preferred? */
  if (byName[preferredMech] &&
    (offeredMechs.indexOf(preferredMech) >= 0)) {
    Mech = byName[preferredMech]
  }
  /* By priority */
  mechClasses.forEach(function (mechClass) {
    if (!Mech &&
      (offeredMechs.indexOf(mechClass.prototype.name) >= 0)) {
      Mech = mechClass
    }
  })

  return Mech ? new Mech() : null
}

/**
 * Will detect the available mechanisms based on the given options
 * @param  {[type]} options client configuration
 * @param  Array availableMech available methods on client
 * @return {[type]}         available options
 */
function detectMechanisms (options, availableMech) {
  var mechClasses = availableMech || []

  var detect = []
  mechClasses.forEach(function (mechClass) {
    var match = mechClass.prototype.match
    if (match(options)) detect.push(mechClass)
  })
  return detect
}

exports.selectMechanism = selectMechanism
exports.detectMechanisms = detectMechanisms
exports.AbstractMechanism = Mechanism

},{"./authentication/mechanism":116}],121:[function(require,module,exports){
(function (process){(function (){
'use strict'

var tls = require('tls')
var EventEmitter = require('events').EventEmitter
var core = require('node-xmpp-core')
var inherits = core.inherits
var Connection = core.Connection
var JID = core.JID
var SRV = core.SRV
var BOSHConnection = require('./bosh')
var WSConnection = require('./websockets')
var debug = require('debug')('xmpp:client:session')

function Session (opts) {
  EventEmitter.call(this)

  this.setOptions(opts)

  if (opts.websocket && opts.websocket.url) {
    debug('start websocket connection')
    this._setupWebsocketConnection(opts)
  } else if (opts.bosh && opts.bosh.url) {
    debug('start bosh connection')
    this._setupBoshConnection(opts)
  } else {
    debug('start socket connection')
    this._setupSocketConnection(opts)
  }
}

inherits(Session, EventEmitter)

Session.prototype._setupSocketConnection = function (opts) {
  var params = {
    xmlns: { '': opts.xmlns },
    streamAttrs: {
      version: '1.0',
      to: this.jid.domain
    },
    serialized: opts.serialized
  }
  for (var key in opts) {
    if (!(key in params)) {
      params[key] = opts[key]
    }
  }

  this.connection = new Connection(params)
  this._addConnectionListeners()

  if (opts.host || opts.port) {
    this._socketConnectionToHost(opts)
  } else if (!SRV) {
    throw new Error('Cannot load SRV')
  } else {
    this._performSrvLookup(opts)
  }
}

Session.prototype._socketConnectionToHost = function (opts) {
  var _this = this

  if (opts.legacySSL) {
    this.connection.allowTLS = false
    this.connection.connect({
      socket: function () {
        return tls.connect(
          opts.port || 5223,
          opts.host || 'localhost',
          opts.credentials || {},
          function () {
            if (this.socket.authorized) {
              _this.emit('connect', this.socket)
            } else {
              _this.emit('error', 'unauthorized')
            }
          }.bind(this)
        )
      }
    })
  } else {
    if (opts.credentials) {
      this.connection.credentials = tls
        .createSecureContext(opts.credentials)
    }
    if (opts.disallowTLS) this.connection.allowTLS = false
    this.connection.listen({
      socket: function () {
        // wait for connect event listeners
        process.nextTick(function () {
          this.socket.connect(opts.port || 5222, opts.host)
        }.bind(this))
        var socket = opts.socket
        opts.socket = null
        return socket // maybe create new socket
      }
    })
  }
}

Session.prototype._performSrvLookup = function (opts) {
  if (opts.legacySSL) {
    throw new Error('LegacySSL mode does not support DNS lookups')
  }
  if (opts.credentials) {
    this.connection.credentials = tls.createSecureContext(opts.credentials)
  }
  if (opts.disallowTLS) {
    this.connection.allowTLS = false
  }
  this.connection.listen({socket: SRV.connect({
    socket: opts.socket,
    services: ['_xmpp-client._tcp'],
    domain: this.jid.domain,
    defaultPort: 5222
  })})
}

Session.prototype._setupBoshConnection = function (opts) {
  this.connection = new BOSHConnection({
    jid: this.jid,
    bosh: opts.bosh
  })
  this._addConnectionListeners()
  this.connection.on('connected', function () {
    // Clients start <stream:stream>, servers reply
    if (this.connection.startStream) {
      this.connection.startStream()
    }
  }.bind(this))
}

Session.prototype._setupWebsocketConnection = function (opts) {
  this.connection = new WSConnection({
    jid: this.jid,
    websocket: opts.websocket
  })
  this._addConnectionListeners()
  this.connection.on('connected', function () {
    // Clients start <stream:stream>, servers reply
    if (this.connection.startStream) {
      this.connection.startStream()
    }
  }.bind(this))
}

Session.prototype.setOptions = function (opts) {
  this.jid = (typeof opts.jid === 'string') ? new JID(opts.jid) : opts.jid
  this.password = opts.password
  this.preferredSaslMechanism = opts.preferredSaslMechanism
  this.api_key = opts.api_key
  this.access_token = opts.access_token
  this.oauth2_token = opts.oauth2_token
  this.oauth2_auth = opts.oauth2_auth
  this.register = opts.register
  if (typeof opts.actAs === 'string') {
    this.actAs = new JID(opts.actAs)
  } else {
    this.actAs = opts.actAs
  }
}

Session.prototype._addConnectionListeners = function (con) {
  con = con || this.connection
  con.on('stanza', this.onStanza.bind(this))
  con.on('drain', this.emit.bind(this, 'drain'))
  con.on('end', this.emit.bind(this, 'end'))
  con.on('close', this.emit.bind(this, 'close'))
  con.on('error', this.emit.bind(this, 'error'))
  con.on('connect', this.emit.bind(this, 'connect'))
  con.on('reconnect', this.emit.bind(this, 'reconnect'))
  con.on('disconnect', this.emit.bind(this, 'disconnect'))
  if (con.startStream) {
    con.on('connect', function () {
      // Clients start <stream:stream>, servers reply
      con.startStream()
    })
    this.on('auth', function () {
      con.startStream()
    })
  }
}

Session.prototype.pause = function () {
  if (this.connection && this.connection.pause) {
    this.connection.pause()
  }
}

Session.prototype.resume = function () {
  if (this.connection && this.connection.resume) {
    this.connection.resume()
  }
}

Session.prototype.send = function (stanza) {
  return this.connection ? this.connection.send(stanza) : false
}

Session.prototype.end = function () {
  if (this.connection) {
    this.connection.end()
  }
}

Session.prototype.onStanza = function () {}

module.exports = Session

}).call(this)}).call(this,require('_process'))
},{"./bosh":119,"./websockets":122,"_process":152,"debug":56,"events":80,"node-xmpp-core":123,"tls":32}],122:[function(require,module,exports){
'use strict'

var EventEmitter = require('events').EventEmitter
var core = require('node-xmpp-core')
var Element = core.Element
var StreamParser = core.StreamParser
var Connection = core.Connection
var inherits = core.inherits
var ws = require('ws')
 // we ignore ws in the browser field of package.json
var WebSocket = ws.Server ? ws : window.WebSocket
var debug = require('debug')('xmpp:client:websocket')

var NS_FRAMING = 'urn:ietf:params:xml:ns:xmpp-framing'

function WSConnection (opts) {
  EventEmitter.call(this)

  this.url = opts.websocket.url
  this.jid = opts.jid
  this.xmlns = {
    '': NS_FRAMING
  }
  this.websocket = new WebSocket(this.url, ['xmpp'], opts.websocket.options)
  this.websocket.onopen = this.onopen.bind(this)
  this.websocket.onmessage = this.onmessage.bind(this)
  this.websocket.onclose = this.onclose.bind(this)
  this.websocket.onerror = this.onerror.bind(this)
}

inherits(WSConnection, EventEmitter)

WSConnection.prototype.maxStanzaSize = 65535
WSConnection.prototype.xmppVersion = '1.0'

WSConnection.prototype.onopen = function () {
  this.startParser()
  this.emit('connected')
}

WSConnection.prototype.startParser = function () {
  var self = this
  this.parser = new StreamParser(this.maxStanzaSize)

  this.parser.on('start', function (attrs) {
    self.streamAttrs = attrs
    /* We need those xmlns often, store them extra */
    self.streamNsAttrs = {}
    for (var k in attrs) {
      if ((k === 'xmlns') ||
        (k.substr(0, 6) === 'xmlns:')) {
        self.streamNsAttrs[k] = attrs[k]
      }
    }

    /* Notify in case we don't wait for <stream:features/>
       (Component or non-1.0 streams)
     */
    self.emit('streamStart', attrs)
  })
  this.parser.on('stanza', function (stanza) {
    // self.onStanza(self.addStreamNs(stanza))
    self.onStanza(stanza)
  })
  this.parser.on('error', this.onerror.bind(this))
  this.parser.on('end', function () {
    self.stopParser()
    self.end()
  })
}

WSConnection.prototype.stopParser = function () {
  /* No more events, please (may happen however) */
  if (this.parser) {
    /* Get GC'ed */
    delete this.parser
  }
}

WSConnection.prototype.onmessage = function (msg) {
  debug('ws msg <--', msg.data)
  if (msg && msg.data && this.parser) {
    this.parser.write(msg.data)
  }
}

WSConnection.prototype.onStanza = function (stanza) {
  if (stanza.is('error', Connection.NS_STREAM)) {
    /* TODO: extract error text */
    this.emit('error', stanza)
  } else {
    this.emit('stanza', stanza)
  }
}

WSConnection.prototype.startStream = function () {
  var attrs = {}
  for (var k in this.xmlns) {
    if (this.xmlns.hasOwnProperty(k)) {
      if (!k) {
        attrs.xmlns = this.xmlns[k]
      } else {
        attrs['xmlns:' + k] = this.xmlns[k]
      }
    }
  }
  if (this.xmppVersion) attrs.version = this.xmppVersion
  if (this.streamTo) attrs.to = this.streamTo
  if (this.jid) attrs.to = this.jid.domain

  this.send(new Element('open', attrs))

  this.streamOpened = true
}

WSConnection.prototype.send = function (stanza) {
  if (stanza.root) stanza = stanza.root()

  if (!stanza.attrs.xmlns && (stanza.is('iq') || stanza.is('presence') || stanza.is('message'))) {
    stanza.attrs.xmlns = 'jabber:client'
  }

  stanza = stanza.toString()
  debug('ws send -->', stanza)
  this.websocket.send(stanza)
}

WSConnection.prototype.onclose = function () {
  this.emit('disconnect')
  this.emit('close')
}

WSConnection.prototype.end = function () {
  this.send(new Element('close', {xmlns: NS_FRAMING}))
  this.emit('disconnect')
  this.emit('end')
  if (this.websocket) this.websocket.close()
}

WSConnection.prototype.onerror = function (e) {
  this.emit('error', e)
}

module.exports = WSConnection

},{"debug":56,"events":80,"node-xmpp-core":123,"ws":29}],123:[function(require,module,exports){
'use strict'

var Connection = require('./lib/Connection')
var StreamParser = require('@xmpp/streamparser')

var JID = require('@xmpp/jid')
var xml = require('@xmpp/xml')
var inherits = require('inherits')

exports.SRV = require('./lib/SRV')

exports.exportCoreUtils = function (obj) {
  // core
  obj.Connection = Connection
  obj.StreamParser = StreamParser

  // jid
  obj.JID = JID

  // inherits
  obj.inherits = inherits

  // xml
  obj.stanza = xml
  obj.Stanza = xml.Stanza
  obj.createStanza = xml.createStanza
  obj.IQ = xml.IQ
  obj.Presence = xml.Presence
  obj.Message = xml.Message
  obj.Parser = xml.Parser
  obj.parse = xml.parse

  // ltx
  obj.ltx = xml.ltx
  obj.createElement = xml.createElement
  obj.Element = xml.Element
  obj.escapeXML = xml.escapeXML
  obj.escapeXMLText = xml.escapeXMLText
}

exports.exportCoreUtils(exports)

},{"./lib/Connection":124,"./lib/SRV":29,"@xmpp/jid":125,"@xmpp/streamparser":7,"@xmpp/xml":129,"inherits":85}],124:[function(require,module,exports){
'use strict'

var net = require('net')
var EventEmitter = require('events').EventEmitter
var inherits = require('inherits')
var Element = require('@xmpp/xml').Element
var reconnect = require('reconnect-core')
var StreamParser = require('@xmpp/streamparser')
var starttls = require('node-xmpp-tls-connect')
var debug = require('debug')('xmpp:connection')
var assign = require('lodash.assign')

var NS_XMPP_TLS = 'urn:ietf:params:xml:ns:xmpp-tls'
var NS_STREAM = 'http://etherx.jabber.org/streams'
var NS_XMPP_STREAMS = 'urn:ietf:params:xml:ns:xmpp-streams'

var INITIAL_RECONNECT_DELAY = 1e3
var MAX_RECONNECT_DELAY = 30e3

var STREAM_OPEN = 'stream:stream'
var STREAM_CLOSE = '</stream:stream>'

function defaultInjection (emitter, opts) {
  // clone opts
  var options = assign({}, opts)

  // add computed options
  options.initialDelay = (opts && (opts.initialReconnectDelay ||
    opts.reconnectDelay)) || INITIAL_RECONNECT_DELAY
  options.maxDelay = (opts && opts.maxReconnectDelay) || MAX_RECONNECT_DELAY
  options.immediate = opts && opts.socket && (typeof opts.socket !== 'function')
  options.type = opts && opts.delayType
  options.emitter = emitter

  // return calculated options
  return options
}

/**
 Base class for connection-based streams (TCP).
 The socket parameter is optional for incoming connections.
*/
function Connection (opts) {
  EventEmitter.call(this)

  this.streamAttrs = (opts && opts.streamAttrs) || {}
  this.xmlns = (opts && opts.xmlns) || {}
  this.xmlns.stream = NS_STREAM

  this.streamOpen = (opts && opts.streamOpen) || STREAM_OPEN
  this.streamClose = (opts && opts.streamClose) || STREAM_CLOSE

  this.rejectUnauthorized = !!(opts && opts.rejectUnauthorized)
  this.serialized = !!(opts && opts.serialized)
  this.requestCert = !!(opts && opts.requestCert)

  this.servername = (opts && opts.servername)

  this.boundOnData = this.onData.bind(this)
  this.boundOnClose = this.onClose.bind(this)
  this.boundEmitData = this.emit.bind(this, 'data')
  this.boundEmitDrain = this.emit.bind(this, 'drain')

  this._setupSocket(defaultInjection(this, opts))
  this.once('reconnect', function () {
    this.reconnect = opts && opts.reconnect
  })
}

inherits(Connection, EventEmitter)

Connection.prototype.NS_XMPP_TLS = NS_XMPP_TLS
Connection.NS_STREAM = NS_STREAM
Connection.prototype.NS_XMPP_STREAMS = NS_XMPP_STREAMS
// Defaults
Connection.prototype.allowTLS = true

Connection.prototype._setupSocket = function (options) {
  debug('setup socket')
  var previousOptions = {}
  var inject = reconnect(function (opts) {
    var previousSocket = this.socket
    /* if this opts.preserve is on
     * the previous options are stored until next time.
     * this is needed to restore from a setSecure call.
     */
    if (opts.preserve === 'on') {
      opts.preserve = previousOptions
      previousOptions = opts
    } else if (opts.preserve) {
      // switch back to the preversed options
      opts = previousOptions = opts.preserve
    } else {
      // keep some state for eg SRV.connect
      opts = previousOptions = opts || previousOptions
    }

    if (typeof opts.socket === 'function') {
      debug('use lazy socket')
      /* lazy evaluation
       * (can be retriggered by calling connection.connect()
       *  without arguments after a previous
       *  connection.connect({socket:function() { … }})) */
      this.socket = opts.socket.call(this)
    } else {
      debug('use standard socket')
      // only use this socket once
      this.socket = opts.socket
      opts.socket = null
      if (this.socket) {
        this.once('connect', function () {
          inject.options.immediate = false
        })
      }
    }
    this.socket = this.socket || new net.Socket()
    if (previousSocket !== this.socket) {
      this.setupStream()
    }
    return this.socket
  }.bind(this))

  inject(inject.options = options)

  // wrap the end function provided by reconnect-core to trigger the stream end logic
  var end = this.end
  this.end = this.disconnect = function () {
    this.closeStream()
    end()
  }

  this.on('connection', function () {
    if (!this.parser) this.startParser()
  })
  this.on('end', function () {
    previousOptions = {}
  })
}

/**
 Used by both the constructor and by reinitialization in setSecure().
*/
Connection.prototype.setupStream = function () {
  debug('setup stream')
  this.socket.on('end', this.onEnd.bind(this))
  this.socket.on('data', this.boundOnData)
  this.socket.on('close', this.boundOnClose)
  // let them sniff unparsed XML
  this.socket.on('data', this.boundEmitData)
  this.socket.on('drain', this.boundEmitDrain)
  // ignore errors after disconnect
  this.socket.on('error', function () {})

  if (!this.socket.serializeStanza) {
    /**
    * This is optimized for continuous TCP streams. If your "socket"
    * actually transports frames (WebSockets) and you can't have
    * stanzas split across those, use:
    *     cb(el.toString())
    */
    if (this.serialized) {
      this.socket.serializeStanza = function (el, cb) {
        // Continuously write out
        el.write(function (s) {
          cb(s)
        })
      }
    } else {
      this.socket.serializeStanza = function (el, cb) {
        cb(el.toString())
      }
    }
  }
}

Connection.prototype.pause = function () {
  if (this.socket.pause) this.socket.pause()
}

Connection.prototype.resume = function () {
  if (this.socket.resume) this.socket.resume()
}

/** Climbs the stanza up if a child was passed,
    but you can send strings and buffers too.

    Returns whether the socket flushed data.
*/
Connection.prototype.send = function (stanza) {
  if (!this.socket || !this.streamOpened) return

  if (!this.socket.writable) {
    this.socket.end()
    return
  }

  debug('send: ' + stanza.toString())

  var flushed = true

  if (stanza.root) {
    var el = this.rmXmlns(stanza.root())
    this.socket.serializeStanza(el, function (s) {
      flushed = this.write(s)
    }.bind(this.socket))
  } else {
    flushed = this.socket.write(stanza)
  }
  return flushed
}

Connection.prototype.startParser = function () {
  var self = this
  this.parser = new StreamParser(this.maxStanzaSize)

  this.parser.on('streamStart', function (attrs) {
    /* We need those xmlns often, store them extra */
    self.streamNsAttrs = {}
    for (var k in attrs) {
      if (k === 'xmlns' || (k.substr(0, 6) === 'xmlns:')) {
        self.streamNsAttrs[k] = attrs[k]
      }
    }

    /* Notify in case we don't wait for <stream:features/>
       (Component or non-1.0 streams)
     */
    self.emit('streamStart', attrs)
  })
  this.parser.on('stanza', function (stanza) {
    self.onStanza(self.addStreamNs(stanza))
  })
  this.parser.on('error', function (e) {
    self.error(e.condition || 'internal-server-error', e.message)
  })
  this.parser.once('end', function () {
    self.stopParser()
    if (self.reconnect) {
      self.once('reconnect', self.startParser.bind(self))
    } else {
      self.end()
    }
  })
}

Connection.prototype.stopParser = function () {
  /* No more events, please (may happen however) */
  if (this.parser) {
    var parser = this.parser
    /* Get GC'ed */
    this.parser = null
    parser.end()
  }
}

/**
 * http://xmpp.org/rfcs/rfc6120.html#streams-open
 */
Connection.prototype.openStream = function () {
  var attrs = {}
  for (var k in this.xmlns) {
    if (this.xmlns.hasOwnProperty(k)) {
      if (!k) {
        attrs.xmlns = this.xmlns[k]
      } else {
        attrs['xmlns:' + k] = this.xmlns[k]
      }
    }
  }
  for (k in this.streamAttrs) {
    if (this.streamAttrs.hasOwnProperty(k)) {
      attrs[k] = this.streamAttrs[k]
    }
  }

  if (this.streamTo) { // in case of a component connecting
    attrs.to = this.streamTo
  }

  var el = new Element(this.streamOpen, attrs)
  var streamOpen
  if (el.name === 'stream:stream') {
    // make it non-empty to cut the closing tag
    el.t(' ')
    var s = el.toString()
    streamOpen = s.substr(0, s.indexOf(' </stream:stream>'))
  } else {
    streamOpen = el.toString()
  }

  this.streamOpened = true
  this.send(streamOpen)
}
// FIXME deprecate
Connection.prototype.startStream = Connection.prototype.openStream

/**
 * http://xmpp.org/rfcs/rfc6120.html#streams-close
 */
Connection.prototype.closeStream = function () {
  this.send(this.streamClose)
  this.streamOpened = false
}
// FIXME deprecate
Connection.prototype.endStream = Connection.prototype.closeStream

Connection.prototype.onData = function (data) {
  debug('receive: ' + data.toString('utf8'))
  if (this.parser) {
    this.parser.write(data)
  }
}

Connection.prototype.setSecure = function (credentials, isServer, servername) {
  // Remove old event listeners
  this.socket.removeListener('data', this.boundOnData)
  this.socket.removeListener('data', this.boundEmitData)

  // retain socket 'end' listeners because ssl layer doesn't support it
  this.socket.removeListener('drain', this.boundEmitDrain)
  this.socket.removeListener('close', this.boundOnClose)
  // remove idle_timeout
  if (this.socket.clearTimer) {
    this.socket.clearTimer()
  }

  var cleartext = starttls({
    socket: this.socket,
    rejectUnauthorized: this.rejectUnauthorized,
    credentials: credentials || this.credentials,
    requestCert: this.requestCert,
    isServer: !!isServer,
    servername: isServer && servername
  }, function () {
    this.isSecure = true
    this.once('disconnect', function () {
      this.isSecure = false
    })
    cleartext.emit('connect', cleartext)
  }.bind(this))
  cleartext.on('clientError', this.emit.bind(this, 'error'))
  if (!this.reconnect) {
    this.reconnect = true // need this so stopParser works properly
    this.once('reconnect', function () { this.reconnect = false })
  }
  this.stopParser()
  // if we reconnect we need to get back to the previous socket creation
  this.listen({ socket: cleartext, preserve: 'on' })
}

function getAllText (el) {
  return !el.children ? el : el.children.reduce(function (text, child) {
    return text + getAllText(child)
  }, '')
}

/**
 * This is not an event listener, but takes care of the TLS handshake
 * before 'stanza' events are emitted to the derived classes.
 */
Connection.prototype.onStanza = function (stanza) {
  if (stanza.is('error', NS_STREAM)) {
    var error = new Error('' + getAllText(stanza))
    error.stanza = stanza
    this.socket.emit('error', error)
  } else if (stanza.is('features', this.NS_STREAM) &&
    this.allowTLS &&
    !this.isSecure &&
    stanza.getChild('starttls', this.NS_XMPP_TLS)) {
    /* Signal willingness to perform TLS handshake */
    this.send(new Element('starttls', { xmlns: this.NS_XMPP_TLS }))
  } else if (this.allowTLS &&
    stanza.is('proceed', this.NS_XMPP_TLS)) {
    /* Server is waiting for TLS handshake */
    this.setSecure()
  } else {
    this.emit('stanza', stanza)
  }
}

/**
 * Add stream xmlns to a stanza
 *
 * Does not add our default xmlns as it is different for
 * C2S/S2S/Component connections.
 */
Connection.prototype.addStreamNs = function (stanza) {
  for (var attr in this.streamNsAttrs) {
    if (!stanza.attrs[attr] &&
      !((attr === 'xmlns') && (this.streamNsAttrs[attr] === this.xmlns['']))
    ) {
      stanza.attrs[attr] = this.streamNsAttrs[attr]
    }
  }
  return stanza
}

/**
 * Remove superfluous xmlns that were aleady declared in
 * our <stream:stream>
 */
Connection.prototype.rmXmlns = function (stanza) {
  for (var prefix in this.xmlns) {
    var attr = prefix ? 'xmlns:' + prefix : 'xmlns'
    if (stanza.attrs[attr] === this.xmlns[prefix]) {
      stanza.attrs[attr] = null
    }
  }
  return stanza
}

/**
 * XMPP-style end connection for user
 */
Connection.prototype.onEnd = function () {
  this.closeStream()
  if (!this.reconnect) {
    this.emit('end')
  }
}

Connection.prototype.onClose = function () {
  if (!this.reconnect) {
    this.emit('close')
  }
}

/**
 * End connection with stream error.
 * Emits 'error' event too.
 *
 * @param {String} condition XMPP error condition, see RFC3920 4.7.3. Defined Conditions
 * @param {String} text Optional error message
 */
Connection.prototype.error = function (condition, message) {
  this.emit('error', new Error(message))

  if (!this.socket || !this.socket.writable) return

  /* RFC 3920, 4.7.1 stream-level errors rules */
  if (!this.streamOpened) this.openStream()

  var error = new Element('stream:error')
  error.c(condition, { xmlns: NS_XMPP_STREAMS })
  if (message) {
    error.c('text', {
      xmlns: NS_XMPP_STREAMS,
      'xml:lang': 'en'
    }).t(message)
  }

  this.send(error)
  this.end()
}

module.exports = Connection

},{"@xmpp/streamparser":7,"@xmpp/xml":129,"debug":56,"events":80,"inherits":85,"lodash.assign":89,"net":32,"node-xmpp-tls-connect":29,"reconnect-core":171}],125:[function(require,module,exports){
'use strict'

var JID = require('./lib/JID')
var tag = require('./lib/tag')

module.exports = function createJID (a, b, c) {
  if (Array.isArray(a)) {
    return tag.apply(null, arguments)
  }

  return new JID(a, b, c)
}
module.exports.JID = JID
module.exports.tag = tag
module.exports.equal = function (a, b) {
  return a.equals(b)
}
module.exports.is = function (a) {
  return a instanceof JID
}

},{"./lib/JID":126,"./lib/tag":128}],126:[function(require,module,exports){
'use strict'

var escaping = require('./escaping')

/**
 * JID implements
 * - XMPP addresses according to RFC6122
 * - XEP-0106: JID Escaping
 *
 * @see http://tools.ietf.org/html/rfc6122#section-2
 * @see http://xmpp.org/extensions/xep-0106.html
 */
function JID (a, b, c) {
  this._local = null
  this.user = null // DEPRECATED
  this._domain = null
  this._resource = null

  if (a && (!b) && (!c)) {
    this.parseJID(a)
  } else if (b) {
    this.setLocal(a)
    this.setDomain(b)
    this.setResource(c)
  } else {
    throw new Error('Argument error')
  }
}

JID.prototype.parseJID = function (s) {
  var resourceStart = s.indexOf('/')
  if (resourceStart !== -1) {
    this.setResource(s.substr(resourceStart + 1))
    s = s.substr(0, resourceStart)
  }

  var atStart = s.indexOf('@')
  if (atStart !== -1) {
    this.setLocal(s.substr(0, atStart))
    s = s.substr(atStart + 1)
  }

  this.setDomain(s)
}

JID.prototype.toString = function (unescape) {
  var s = this._domain
  if (this._local) s = this.getLocal(unescape) + '@' + s
  if (this._resource) s = s + '/' + this._resource
  return s
}

/**
 * Convenience method to distinguish users
 **/
JID.prototype.bare = function () {
  if (this._resource) {
    return new JID(this._local, this._domain, null)
  } else {
    return this
  }
}

/**
 * Comparison function
 **/
JID.prototype.equals = function (other) {
  return (this._local === other._local) &&
    (this._domain === other._domain) &&
    (this._resource === other._resource)
}

/**
 * http://xmpp.org/rfcs/rfc6122.html#addressing-localpart
 **/
JID.prototype.setLocal = function (local, escape) {
  escape = escape || escaping.detect(local)

  if (escape) {
    local = escaping.escape(local)
  }

  this._local = local && local.toLowerCase()
  this.user = this._local
  return this
}

JID.prototype.setUser = function () {
  console.log('JID.setUser: Use JID.setLocal instead')
  this.setLocal.apply(this, arguments)
}

JID.prototype.getUser = function () {
  console.log('JID.getUser: Use JID.getLocal instead')
  return this.getLocal.apply(this, arguments)
}

JID.prototype.getLocal = function (unescape) {
  unescape = unescape || false
  var local = null

  if (unescape) {
    local = escaping.unescape(this._local)
  } else {
    local = this._local
  }

  return local
}

Object.defineProperty(JID.prototype, 'local', {
  get: JID.prototype.getLocal,
  set: JID.prototype.setLocal
})

/**
 * http://xmpp.org/rfcs/rfc6122.html#addressing-domain
 */
JID.prototype.setDomain = function (domain) {
  this._domain = domain.toLowerCase()
  return this
}

JID.prototype.getDomain = function () {
  return this._domain
}

Object.defineProperty(JID.prototype, 'domain', {
  get: JID.prototype.getDomain,
  set: JID.prototype.setDomain
})

/**
 * http://xmpp.org/rfcs/rfc6122.html#addressing-resourcepart
 */
JID.prototype.setResource = function (resource) {
  this._resource = resource
  return this
}

JID.prototype.getResource = function () {
  return this._resource
}

Object.defineProperty(JID.prototype, 'resource', {
  get: JID.prototype.getResource,
  set: JID.prototype.setResource
})

JID.prototype.detectEscape = escaping.detectEscape // DEPRECATED
JID.prototype.escapeLocal = escaping.escape // DEPRECATED
JID.prototype.unescapeLocal = escaping.unescape // DEPRECATED

module.exports = JID

},{"./escaping":127}],127:[function(require,module,exports){
'use strict'

module.exports.detect = function (local) {
  if (!local) return false

  // remove all escaped sequences
  var tmp = local
    .replace(/\\20/g, '')
    .replace(/\\22/g, '')
    .replace(/\\26/g, '')
    .replace(/\\27/g, '')
    .replace(/\\2f/g, '')
    .replace(/\\3a/g, '')
    .replace(/\\3c/g, '')
    .replace(/\\3e/g, '')
    .replace(/\\40/g, '')
    .replace(/\\5c/g, '')

  // detect if we have unescaped sequences
  var search = tmp.search(/\\| |"|&|'|\/|:|<|>|@/g)
  if (search === -1) {
    return false
  } else {
    return true
  }
}

/**
 * Escape the local part of a JID.
 *
 * @see http://xmpp.org/extensions/xep-0106.html
 * @param String local local part of a jid
 * @return An escaped local part
 */
module.exports.escape = function (local) {
  if (local === null) return null

  return local
    .replace(/^\s+|\s+$/g, '')
    .replace(/\\/g, '\\5c')
    .replace(/ /g, '\\20')
    .replace(/"/g, '\\22')
    .replace(/&/g, '\\26')
    .replace(/'/g, '\\27')
    .replace(/\//g, '\\2f')
    .replace(/:/g, '\\3a')
    .replace(/</g, '\\3c')
    .replace(/>/g, '\\3e')
    .replace(/@/g, '\\40')
    .replace(/\3a/g, '\u0005c3a')
}

/**
 * Unescape a local part of a JID.
 *
 * @see http://xmpp.org/extensions/xep-0106.html
 * @param String local local part of a jid
 * @return unescaped local part
 */
module.exports.unescape = function (local) {
  if (local === null) return null

  return local
    .replace(/\\20/g, ' ')
    .replace(/\\22/g, '"')
    .replace(/\\26/g, '&')
    .replace(/\\27/g, '\'')
    .replace(/\\2f/g, '/')
    .replace(/\\3a/g, ':')
    .replace(/\\3c/g, '<')
    .replace(/\\3e/g, '>')
    .replace(/\\40/g, '@')
    .replace(/\\5c/g, '\\')
}

},{}],128:[function(require,module,exports){
'use strict'

var JID = require('./JID')

module.exports = function tag (/* [literals], ...substitutions */) {
  var literals = arguments[0]
  var substitutions = Array.prototype.slice.call(arguments, 1)

  var str = ''

  for (var i = 0; i < substitutions.length; i++) {
    str += literals[i]
    str += substitutions[i]
  }
  str += literals[literals.length - 1]

  return new JID(str)
}

},{"./JID":126}],129:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"./lib/IQ":130,"./lib/Message":131,"./lib/Parser":132,"./lib/Presence":133,"./lib/Stanza":134,"./lib/createStanza":135,"./lib/parse":136,"./lib/tag":137,"dup":8,"ltx":90}],130:[function(require,module,exports){
arguments[4][9][0].apply(exports,arguments)
},{"./Stanza":134,"dup":9,"inherits":85}],131:[function(require,module,exports){
arguments[4][10][0].apply(exports,arguments)
},{"./Stanza":134,"dup":10,"inherits":85}],132:[function(require,module,exports){
arguments[4][11][0].apply(exports,arguments)
},{"./createStanza":135,"dup":11,"inherits":85,"ltx":90}],133:[function(require,module,exports){
arguments[4][12][0].apply(exports,arguments)
},{"./Stanza":134,"dup":12,"inherits":85}],134:[function(require,module,exports){
arguments[4][13][0].apply(exports,arguments)
},{"dup":13,"inherits":85,"ltx":90}],135:[function(require,module,exports){
arguments[4][14][0].apply(exports,arguments)
},{"./Stanza":134,"dup":14,"ltx":90}],136:[function(require,module,exports){
arguments[4][15][0].apply(exports,arguments)
},{"./Parser":132,"dup":15,"ltx":90}],137:[function(require,module,exports){
arguments[4][16][0].apply(exports,arguments)
},{"./parse":136,"dup":16,"ltx":90}],138:[function(require,module,exports){
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/

'use strict';
/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

module.exports = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

},{}],139:[function(require,module,exports){
exports.endianness = function () { return 'LE' };

exports.hostname = function () {
    if (typeof location !== 'undefined') {
        return location.hostname
    }
    else return '';
};

exports.loadavg = function () { return [] };

exports.uptime = function () { return 0 };

exports.freemem = function () {
    return Number.MAX_VALUE;
};

exports.totalmem = function () {
    return Number.MAX_VALUE;
};

exports.cpus = function () { return [] };

exports.type = function () { return 'Browser' };

exports.release = function () {
    if (typeof navigator !== 'undefined') {
        return navigator.appVersion;
    }
    return '';
};

exports.networkInterfaces
= exports.getNetworkInterfaces
= function () { return {} };

exports.arch = function () { return 'javascript' };

exports.platform = function () { return 'browser' };

exports.tmpdir = exports.tmpDir = function () {
    return '/tmp';
};

exports.EOL = '\n';

},{}],140:[function(require,module,exports){
'use strict';


var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
                (typeof Uint16Array !== 'undefined') &&
                (typeof Int32Array !== 'undefined');


exports.assign = function (obj /*from1, from2, from3, ...*/) {
  var sources = Array.prototype.slice.call(arguments, 1);
  while (sources.length) {
    var source = sources.shift();
    if (!source) { continue; }

    if (typeof source !== 'object') {
      throw new TypeError(source + 'must be non-object');
    }

    for (var p in source) {
      if (source.hasOwnProperty(p)) {
        obj[p] = source[p];
      }
    }
  }

  return obj;
};


// reduce buffer size, avoiding mem copy
exports.shrinkBuf = function (buf, size) {
  if (buf.length === size) { return buf; }
  if (buf.subarray) { return buf.subarray(0, size); }
  buf.length = size;
  return buf;
};


var fnTyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    if (src.subarray && dest.subarray) {
      dest.set(src.subarray(src_offs, src_offs + len), dest_offs);
      return;
    }
    // Fallback to ordinary array
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    var i, l, len, pos, chunk, result;

    // calculate data length
    len = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      len += chunks[i].length;
    }

    // join chunks
    result = new Uint8Array(len);
    pos = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      chunk = chunks[i];
      result.set(chunk, pos);
      pos += chunk.length;
    }

    return result;
  }
};

var fnUntyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    return [].concat.apply([], chunks);
  }
};


// Enable/Disable typed arrays use, for testing
//
exports.setTyped = function (on) {
  if (on) {
    exports.Buf8  = Uint8Array;
    exports.Buf16 = Uint16Array;
    exports.Buf32 = Int32Array;
    exports.assign(exports, fnTyped);
  } else {
    exports.Buf8  = Array;
    exports.Buf16 = Array;
    exports.Buf32 = Array;
    exports.assign(exports, fnUntyped);
  }
};

exports.setTyped(TYPED_OK);

},{}],141:[function(require,module,exports){
'use strict';

// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It doesn't worth to make additional optimizationa as in original.
// Small size is preferable.

function adler32(adler, buf, len, pos) {
  var s1 = (adler & 0xffff) |0,
      s2 = ((adler >>> 16) & 0xffff) |0,
      n = 0;

  while (len !== 0) {
    // Set limit ~ twice less than 5552, to keep
    // s2 in 31-bits, because we force signed ints.
    // in other case %= will fail.
    n = len > 2000 ? 2000 : len;
    len -= n;

    do {
      s1 = (s1 + buf[pos++]) |0;
      s2 = (s2 + s1) |0;
    } while (--n);

    s1 %= 65521;
    s2 %= 65521;
  }

  return (s1 | (s2 << 16)) |0;
}


module.exports = adler32;

},{}],142:[function(require,module,exports){
'use strict';


module.exports = {

  /* Allowed flush values; see deflate() and inflate() below for details */
  Z_NO_FLUSH:         0,
  Z_PARTIAL_FLUSH:    1,
  Z_SYNC_FLUSH:       2,
  Z_FULL_FLUSH:       3,
  Z_FINISH:           4,
  Z_BLOCK:            5,
  Z_TREES:            6,

  /* Return codes for the compression/decompression functions. Negative values
  * are errors, positive values are used for special but normal events.
  */
  Z_OK:               0,
  Z_STREAM_END:       1,
  Z_NEED_DICT:        2,
  Z_ERRNO:           -1,
  Z_STREAM_ERROR:    -2,
  Z_DATA_ERROR:      -3,
  //Z_MEM_ERROR:     -4,
  Z_BUF_ERROR:       -5,
  //Z_VERSION_ERROR: -6,

  /* compression levels */
  Z_NO_COMPRESSION:         0,
  Z_BEST_SPEED:             1,
  Z_BEST_COMPRESSION:       9,
  Z_DEFAULT_COMPRESSION:   -1,


  Z_FILTERED:               1,
  Z_HUFFMAN_ONLY:           2,
  Z_RLE:                    3,
  Z_FIXED:                  4,
  Z_DEFAULT_STRATEGY:       0,

  /* Possible values of the data_type field (though see inflate()) */
  Z_BINARY:                 0,
  Z_TEXT:                   1,
  //Z_ASCII:                1, // = Z_TEXT (deprecated)
  Z_UNKNOWN:                2,

  /* The deflate compression method */
  Z_DEFLATED:               8
  //Z_NULL:                 null // Use -1 or null inline, depending on var type
};

},{}],143:[function(require,module,exports){
'use strict';

// Note: we can't get significant speed boost here.
// So write code to minimize size - no pregenerated tables
// and array tools dependencies.


// Use ordinary array, since untyped makes no boost here
function makeTable() {
  var c, table = [];

  for (var n = 0; n < 256; n++) {
    c = n;
    for (var k = 0; k < 8; k++) {
      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
    }
    table[n] = c;
  }

  return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
  var t = crcTable,
      end = pos + len;

  crc ^= -1;

  for (var i = pos; i < end; i++) {
    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
  }

  return (crc ^ (-1)); // >>> 0;
}


module.exports = crc32;

},{}],144:[function(require,module,exports){
'use strict';

var utils   = require('../utils/common');
var trees   = require('./trees');
var adler32 = require('./adler32');
var crc32   = require('./crc32');
var msg     = require('./messages');

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
var Z_NO_FLUSH      = 0;
var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
//var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
//var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
//var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;


/* compression levels */
//var Z_NO_COMPRESSION      = 0;
//var Z_BEST_SPEED          = 1;
//var Z_BEST_COMPRESSION    = 9;
var Z_DEFAULT_COMPRESSION = -1;


var Z_FILTERED            = 1;
var Z_HUFFMAN_ONLY        = 2;
var Z_RLE                 = 3;
var Z_FIXED               = 4;
var Z_DEFAULT_STRATEGY    = 0;

/* Possible values of the data_type field (though see inflate()) */
//var Z_BINARY              = 0;
//var Z_TEXT                = 1;
//var Z_ASCII               = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;


/* The deflate compression method */
var Z_DEFLATED  = 8;

/*============================================================================*/


var MAX_MEM_LEVEL = 9;
/* Maximum value for memLevel in deflateInit2 */
var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_MEM_LEVEL = 8;


var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */
var LITERALS      = 256;
/* number of literal bytes 0..255 */
var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */
var D_CODES       = 30;
/* number of distance codes */
var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */
var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */
var MAX_BITS  = 15;
/* All codes must not exceed MAX_BITS bits */

var MIN_MATCH = 3;
var MAX_MATCH = 258;
var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);

var PRESET_DICT = 0x20;

var INIT_STATE = 42;
var EXTRA_STATE = 69;
var NAME_STATE = 73;
var COMMENT_STATE = 91;
var HCRC_STATE = 103;
var BUSY_STATE = 113;
var FINISH_STATE = 666;

var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
var BS_BLOCK_DONE     = 2; /* block flush performed */
var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */

var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.

function err(strm, errorCode) {
  strm.msg = msg[errorCode];
  return errorCode;
}

function rank(f) {
  return ((f) << 1) - ((f) > 4 ? 9 : 0);
}

function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }


/* =========================================================================
 * Flush as much pending output as possible. All deflate() output goes
 * through this function so some applications may wish to modify it
 * to avoid allocating a large strm->output buffer and copying into it.
 * (See also read_buf()).
 */
function flush_pending(strm) {
  var s = strm.state;

  //_tr_flush_bits(s);
  var len = s.pending;
  if (len > strm.avail_out) {
    len = strm.avail_out;
  }
  if (len === 0) { return; }

  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
  strm.next_out += len;
  s.pending_out += len;
  strm.total_out += len;
  strm.avail_out -= len;
  s.pending -= len;
  if (s.pending === 0) {
    s.pending_out = 0;
  }
}


function flush_block_only(s, last) {
  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
  s.block_start = s.strstart;
  flush_pending(s.strm);
}


function put_byte(s, b) {
  s.pending_buf[s.pending++] = b;
}


/* =========================================================================
 * Put a short in the pending buffer. The 16-bit value is put in MSB order.
 * IN assertion: the stream state is correct and there is enough room in
 * pending_buf.
 */
function putShortMSB(s, b) {
//  put_byte(s, (Byte)(b >> 8));
//  put_byte(s, (Byte)(b & 0xff));
  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
  s.pending_buf[s.pending++] = b & 0xff;
}


/* ===========================================================================
 * Read a new buffer from the current input stream, update the adler32
 * and total number of bytes read.  All deflate() input goes through
 * this function so some applications may wish to modify it to avoid
 * allocating a large strm->input buffer and copying from it.
 * (See also flush_pending()).
 */
function read_buf(strm, buf, start, size) {
  var len = strm.avail_in;

  if (len > size) { len = size; }
  if (len === 0) { return 0; }

  strm.avail_in -= len;

  // zmemcpy(buf, strm->next_in, len);
  utils.arraySet(buf, strm.input, strm.next_in, len, start);
  if (strm.state.wrap === 1) {
    strm.adler = adler32(strm.adler, buf, len, start);
  }

  else if (strm.state.wrap === 2) {
    strm.adler = crc32(strm.adler, buf, len, start);
  }

  strm.next_in += len;
  strm.total_in += len;

  return len;
}


/* ===========================================================================
 * Set match_start to the longest match starting at the given string and
 * return its length. Matches shorter or equal to prev_length are discarded,
 * in which case the result is equal to prev_length and match_start is
 * garbage.
 * IN assertions: cur_match is the head of the hash chain for the current
 *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
 * OUT assertion: the match length is not greater than s->lookahead.
 */
function longest_match(s, cur_match) {
  var chain_length = s.max_chain_length;      /* max hash chain length */
  var scan = s.strstart; /* current string */
  var match;                       /* matched string */
  var len;                           /* length of current match */
  var best_len = s.prev_length;              /* best match length so far */
  var nice_match = s.nice_match;             /* stop if match long enough */
  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;

  var _win = s.window; // shortcut

  var wmask = s.w_mask;
  var prev  = s.prev;

  /* Stop when cur_match becomes <= limit. To simplify the code,
   * we prevent matches with the string of window index 0.
   */

  var strend = s.strstart + MAX_MATCH;
  var scan_end1  = _win[scan + best_len - 1];
  var scan_end   = _win[scan + best_len];

  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
   * It is easy to get rid of this optimization if necessary.
   */
  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

  /* Do not waste too much time if we already have a good match: */
  if (s.prev_length >= s.good_match) {
    chain_length >>= 2;
  }
  /* Do not look for matches beyond the end of the input. This is necessary
   * to make deflate deterministic.
   */
  if (nice_match > s.lookahead) { nice_match = s.lookahead; }

  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");

  do {
    // Assert(cur_match < s->strstart, "no future");
    match = cur_match;

    /* Skip to next match if the match length cannot increase
     * or if the match length is less than 2.  Note that the checks below
     * for insufficient lookahead only occur occasionally for performance
     * reasons.  Therefore uninitialized memory will be accessed, and
     * conditional jumps will be made that depend on those values.
     * However the length of the match is limited to the lookahead, so
     * the output of deflate is not affected by the uninitialized values.
     */

    if (_win[match + best_len]     !== scan_end  ||
        _win[match + best_len - 1] !== scan_end1 ||
        _win[match]                !== _win[scan] ||
        _win[++match]              !== _win[scan + 1]) {
      continue;
    }

    /* The check at best_len-1 can be removed because it will be made
     * again later. (This heuristic is not always a win.)
     * It is not necessary to compare scan[2] and match[2] since they
     * are always equal when the other bytes match, given that
     * the hash keys are equal and that HASH_BITS >= 8.
     */
    scan += 2;
    match++;
    // Assert(*scan == *match, "match[2]?");

    /* We check for insufficient lookahead only every 8th comparison;
     * the 256th check will be made at strstart+258.
     */
    do {
      /*jshint noempty:false*/
    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             scan < strend);

    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");

    len = MAX_MATCH - (strend - scan);
    scan = strend - MAX_MATCH;

    if (len > best_len) {
      s.match_start = cur_match;
      best_len = len;
      if (len >= nice_match) {
        break;
      }
      scan_end1  = _win[scan + best_len - 1];
      scan_end   = _win[scan + best_len];
    }
  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);

  if (best_len <= s.lookahead) {
    return best_len;
  }
  return s.lookahead;
}


/* ===========================================================================
 * Fill the window when the lookahead becomes insufficient.
 * Updates strstart and lookahead.
 *
 * IN assertion: lookahead < MIN_LOOKAHEAD
 * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
 *    At least one byte has been read, or avail_in == 0; reads are
 *    performed for at least two bytes (required for the zip translate_eol
 *    option -- not supported here).
 */
function fill_window(s) {
  var _w_size = s.w_size;
  var p, n, m, more, str;

  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");

  do {
    more = s.window_size - s.lookahead - s.strstart;

    // JS ints have 32 bit, block below not needed
    /* Deal with !@#$% 64K limit: */
    //if (sizeof(int) <= 2) {
    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
    //        more = wsize;
    //
    //  } else if (more == (unsigned)(-1)) {
    //        /* Very unlikely, but possible on 16 bit machine if
    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
    //         */
    //        more--;
    //    }
    //}


    /* If the window is almost full and there is insufficient lookahead,
     * move the upper half to the lower one to make room in the upper half.
     */
    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {

      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
      s.match_start -= _w_size;
      s.strstart -= _w_size;
      /* we now have strstart >= MAX_DIST */
      s.block_start -= _w_size;

      /* Slide the hash table (could be avoided with 32 bit values
       at the expense of memory usage). We slide even when level == 0
       to keep the hash table consistent if we switch back to level > 0
       later. (Using level 0 permanently is not an optimal usage of
       zlib, so we don't care about this pathological case.)
       */

      n = s.hash_size;
      p = n;
      do {
        m = s.head[--p];
        s.head[p] = (m >= _w_size ? m - _w_size : 0);
      } while (--n);

      n = _w_size;
      p = n;
      do {
        m = s.prev[--p];
        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
        /* If n is not on any hash chain, prev[n] is garbage but
         * its value will never be used.
         */
      } while (--n);

      more += _w_size;
    }
    if (s.strm.avail_in === 0) {
      break;
    }

    /* If there was no sliding:
     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
     *    more == window_size - lookahead - strstart
     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
     * => more >= window_size - 2*WSIZE + 2
     * In the BIG_MEM or MMAP case (not yet supported),
     *   window_size == input_size + MIN_LOOKAHEAD  &&
     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
     * Otherwise, window_size == 2*WSIZE so more >= 2.
     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
     */
    //Assert(more >= 2, "more < 2");
    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
    s.lookahead += n;

    /* Initialize the hash value now that we have some input: */
    if (s.lookahead + s.insert >= MIN_MATCH) {
      str = s.strstart - s.insert;
      s.ins_h = s.window[str];

      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
//#if MIN_MATCH != 3
//        Call update_hash() MIN_MATCH-3 more times
//#endif
      while (s.insert) {
        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

        s.prev[str & s.w_mask] = s.head[s.ins_h];
        s.head[s.ins_h] = str;
        str++;
        s.insert--;
        if (s.lookahead + s.insert < MIN_MATCH) {
          break;
        }
      }
    }
    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
     * but this is not important since only literal bytes will be emitted.
     */

  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);

  /* If the WIN_INIT bytes after the end of the current data have never been
   * written, then zero those bytes in order to avoid memory check reports of
   * the use of uninitialized (or uninitialised as Julian writes) bytes by
   * the longest match routines.  Update the high water mark for the next
   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
   */
//  if (s.high_water < s.window_size) {
//    var curr = s.strstart + s.lookahead;
//    var init = 0;
//
//    if (s.high_water < curr) {
//      /* Previous high water mark below current data -- zero WIN_INIT
//       * bytes or up to end of window, whichever is less.
//       */
//      init = s.window_size - curr;
//      if (init > WIN_INIT)
//        init = WIN_INIT;
//      zmemzero(s->window + curr, (unsigned)init);
//      s->high_water = curr + init;
//    }
//    else if (s->high_water < (ulg)curr + WIN_INIT) {
//      /* High water mark at or above current data, but below current data
//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
//       * to end of window, whichever is less.
//       */
//      init = (ulg)curr + WIN_INIT - s->high_water;
//      if (init > s->window_size - s->high_water)
//        init = s->window_size - s->high_water;
//      zmemzero(s->window + s->high_water, (unsigned)init);
//      s->high_water += init;
//    }
//  }
//
//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
//    "not enough room for search");
}

/* ===========================================================================
 * Copy without compression as much as possible from the input stream, return
 * the current block state.
 * This function does not insert new strings in the dictionary since
 * uncompressible data is probably not useful. This function is used
 * only for the level=0 compression option.
 * NOTE: this function should be optimized to avoid extra copying from
 * window to pending_buf.
 */
function deflate_stored(s, flush) {
  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
   * to pending_buf_size, and each stored block has a 5 byte header:
   */
  var max_block_size = 0xffff;

  if (max_block_size > s.pending_buf_size - 5) {
    max_block_size = s.pending_buf_size - 5;
  }

  /* Copy as much as possible from input to output: */
  for (;;) {
    /* Fill the window as much as possible: */
    if (s.lookahead <= 1) {

      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
      //  s->block_start >= (long)s->w_size, "slide too late");
//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
//        s.block_start >= s.w_size)) {
//        throw  new Error("slide too late");
//      }

      fill_window(s);
      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }

      if (s.lookahead === 0) {
        break;
      }
      /* flush the current block */
    }
    //Assert(s->block_start >= 0L, "block gone");
//    if (s.block_start < 0) throw new Error("block gone");

    s.strstart += s.lookahead;
    s.lookahead = 0;

    /* Emit a stored block if pending_buf will be full: */
    var max_start = s.block_start + max_block_size;

    if (s.strstart === 0 || s.strstart >= max_start) {
      /* strstart == 0 is possible when wraparound on 16-bit machine */
      s.lookahead = s.strstart - max_start;
      s.strstart = max_start;
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/


    }
    /* Flush if we may have to slide, otherwise block_start may become
     * negative and the data will be gone:
     */
    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }

  s.insert = 0;

  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }

  if (s.strstart > s.block_start) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_NEED_MORE;
}

/* ===========================================================================
 * Compress as much as possible from the input stream, return the current
 * block state.
 * This function does not perform lazy evaluation of matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
function deflate_fast(s, flush) {
  var hash_head;        /* head of the hash chain */
  var bflush;           /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) {
        break; /* flush the current block */
      }
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     * At this point we have always match_length < MIN_MATCH
     */
    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */
    }
    if (s.match_length >= MIN_MATCH) {
      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only

      /*** _tr_tally_dist(s, s.strstart - s.match_start,
                     s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;

      /* Insert new strings in the hash table only if the match length
       * is not too large. This saves time but degrades compression.
       */
      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
        s.match_length--; /* string at strstart already in table */
        do {
          s.strstart++;
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
           * always MIN_MATCH bytes ahead.
           */
        } while (--s.match_length !== 0);
        s.strstart++;
      } else
      {
        s.strstart += s.match_length;
        s.match_length = 0;
        s.ins_h = s.window[s.strstart];
        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;

//#if MIN_MATCH != 3
//                Call UPDATE_HASH() MIN_MATCH-3 more times
//#endif
        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
         * matter since it will be recomputed at next deflate call.
         */
      }
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s.window[s.strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * Same as above, but achieves better compression. We use a lazy
 * evaluation for matches: a match is finally adopted only if there is
 * no better match at the next window position.
 */
function deflate_slow(s, flush) {
  var hash_head;          /* head of hash chain */
  var bflush;              /* set if current block must be flushed */

  var max_insert;

  /* Process the input block. */
  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     */
    s.prev_length = s.match_length;
    s.prev_match = s.match_start;
    s.match_length = MIN_MATCH - 1;

    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */

      if (s.match_length <= 5 &&
         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {

        /* If prev_match is also MIN_MATCH, match_start is garbage
         * but we will ignore the current match anyway.
         */
        s.match_length = MIN_MATCH - 1;
      }
    }
    /* If there was a match at the previous step and the current
     * match is not better, output the previous match:
     */
    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
      max_insert = s.strstart + s.lookahead - MIN_MATCH;
      /* Do not insert strings in hash table beyond this. */

      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);

      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
                     s.prev_length - MIN_MATCH, bflush);***/
      bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
      /* Insert in hash table all strings up to the end of the match.
       * strstart-1 and strstart are already inserted. If there is not
       * enough lookahead, the last two strings are not inserted in
       * the hash table.
       */
      s.lookahead -= s.prev_length - 1;
      s.prev_length -= 2;
      do {
        if (++s.strstart <= max_insert) {
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
        }
      } while (--s.prev_length !== 0);
      s.match_available = 0;
      s.match_length = MIN_MATCH - 1;
      s.strstart++;

      if (bflush) {
        /*** FLUSH_BLOCK(s, 0); ***/
        flush_block_only(s, false);
        if (s.strm.avail_out === 0) {
          return BS_NEED_MORE;
        }
        /***/
      }

    } else if (s.match_available) {
      /* If there was no match at the previous position, output a
       * single literal. If there was a match but the current match
       * is longer, truncate the previous match to a single literal.
       */
      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

      if (bflush) {
        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
        flush_block_only(s, false);
        /***/
      }
      s.strstart++;
      s.lookahead--;
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
    } else {
      /* There is no previous match to compare with, wait for
       * the next step to decide.
       */
      s.match_available = 1;
      s.strstart++;
      s.lookahead--;
    }
  }
  //Assert (flush != Z_NO_FLUSH, "no flush?");
  if (s.match_available) {
    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

    s.match_available = 0;
  }
  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_BLOCK_DONE;
}


/* ===========================================================================
 * For Z_RLE, simply look for runs of bytes, generate matches only of distance
 * one.  Do not maintain a hash table.  (It will be regenerated if this run of
 * deflate switches away from Z_RLE.)
 */
function deflate_rle(s, flush) {
  var bflush;            /* set if current block must be flushed */
  var prev;              /* byte at distance one to match */
  var scan, strend;      /* scan goes up to strend for length of run */

  var _win = s.window;

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the longest run, plus one for the unrolled loop.
     */
    if (s.lookahead <= MAX_MATCH) {
      fill_window(s);
      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* See how many times the previous byte repeats */
    s.match_length = 0;
    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
      scan = s.strstart - 1;
      prev = _win[scan];
      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
        strend = s.strstart + MAX_MATCH;
        do {
          /*jshint noempty:false*/
        } while (prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 scan < strend);
        s.match_length = MAX_MATCH - (strend - scan);
        if (s.match_length > s.lookahead) {
          s.match_length = s.lookahead;
        }
      }
      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
    }

    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
    if (s.match_length >= MIN_MATCH) {
      //check_match(s, s.strstart, s.strstart - 1, s.match_length);

      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;
      s.strstart += s.match_length;
      s.match_length = 0;
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s->window[s->strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
 * (It will be regenerated if this run of deflate switches away from Huffman.)
 */
function deflate_huff(s, flush) {
  var bflush;             /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we have a literal to write. */
    if (s.lookahead === 0) {
      fill_window(s);
      if (s.lookahead === 0) {
        if (flush === Z_NO_FLUSH) {
          return BS_NEED_MORE;
        }
        break;      /* flush the current block */
      }
    }

    /* Output a literal byte */
    s.match_length = 0;
    //Tracevv((stderr,"%c", s->window[s->strstart]));
    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
    s.lookahead--;
    s.strstart++;
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* Values for max_lazy_match, good_match and max_chain_length, depending on
 * the desired pack level (0..9). The values given below have been tuned to
 * exclude worst case performance for pathological files. Better values may be
 * found for specific files.
 */
function Config(good_length, max_lazy, nice_length, max_chain, func) {
  this.good_length = good_length;
  this.max_lazy = max_lazy;
  this.nice_length = nice_length;
  this.max_chain = max_chain;
  this.func = func;
}

var configuration_table;

configuration_table = [
  /*      good lazy nice chain */
  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */

  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
];


/* ===========================================================================
 * Initialize the "longest match" routines for a new zlib stream
 */
function lm_init(s) {
  s.window_size = 2 * s.w_size;

  /*** CLEAR_HASH(s); ***/
  zero(s.head); // Fill with NIL (= 0);

  /* Set the default configuration parameters:
   */
  s.max_lazy_match = configuration_table[s.level].max_lazy;
  s.good_match = configuration_table[s.level].good_length;
  s.nice_match = configuration_table[s.level].nice_length;
  s.max_chain_length = configuration_table[s.level].max_chain;

  s.strstart = 0;
  s.block_start = 0;
  s.lookahead = 0;
  s.insert = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  s.ins_h = 0;
}


function DeflateState() {
  this.strm = null;            /* pointer back to this zlib stream */
  this.status = 0;            /* as the name implies */
  this.pending_buf = null;      /* output still pending */
  this.pending_buf_size = 0;  /* size of pending_buf */
  this.pending_out = 0;       /* next pending byte to output to the stream */
  this.pending = 0;           /* nb of bytes in the pending buffer */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.gzhead = null;         /* gzip header information to write */
  this.gzindex = 0;           /* where in extra, name, or comment */
  this.method = Z_DEFLATED; /* can only be DEFLATED */
  this.last_flush = -1;   /* value of flush param for previous deflate call */

  this.w_size = 0;  /* LZ77 window size (32K by default) */
  this.w_bits = 0;  /* log2(w_size)  (8..16) */
  this.w_mask = 0;  /* w_size - 1 */

  this.window = null;
  /* Sliding window. Input bytes are read into the second half of the window,
   * and move to the first half later to keep a dictionary of at least wSize
   * bytes. With this organization, matches are limited to a distance of
   * wSize-MAX_MATCH bytes, but this ensures that IO is always
   * performed with a length multiple of the block size.
   */

  this.window_size = 0;
  /* Actual size of window: 2*wSize, except when the user input buffer
   * is directly used as sliding window.
   */

  this.prev = null;
  /* Link to older string with same hash index. To limit the size of this
   * array to 64K, this link is maintained only for the last 32K strings.
   * An index in this array is thus a window index modulo 32K.
   */

  this.head = null;   /* Heads of the hash chains or NIL. */

  this.ins_h = 0;       /* hash index of string to be inserted */
  this.hash_size = 0;   /* number of elements in hash table */
  this.hash_bits = 0;   /* log2(hash_size) */
  this.hash_mask = 0;   /* hash_size-1 */

  this.hash_shift = 0;
  /* Number of bits by which ins_h must be shifted at each input
   * step. It must be such that after MIN_MATCH steps, the oldest
   * byte no longer takes part in the hash key, that is:
   *   hash_shift * MIN_MATCH >= hash_bits
   */

  this.block_start = 0;
  /* Window position at the beginning of the current output block. Gets
   * negative when the window is moved backwards.
   */

  this.match_length = 0;      /* length of best match */
  this.prev_match = 0;        /* previous match */
  this.match_available = 0;   /* set if previous match exists */
  this.strstart = 0;          /* start of string to insert */
  this.match_start = 0;       /* start of matching string */
  this.lookahead = 0;         /* number of valid bytes ahead in window */

  this.prev_length = 0;
  /* Length of the best match at previous step. Matches not greater than this
   * are discarded. This is used in the lazy match evaluation.
   */

  this.max_chain_length = 0;
  /* To speed up deflation, hash chains are never searched beyond this
   * length.  A higher limit improves compression ratio but degrades the
   * speed.
   */

  this.max_lazy_match = 0;
  /* Attempt to find a better match only when the current match is strictly
   * smaller than this value. This mechanism is used only for compression
   * levels >= 4.
   */
  // That's alias to max_lazy_match, don't use directly
  //this.max_insert_length = 0;
  /* Insert new strings in the hash table only if the match length is not
   * greater than this length. This saves time but degrades compression.
   * max_insert_length is used only for compression levels <= 3.
   */

  this.level = 0;     /* compression level (1..9) */
  this.strategy = 0;  /* favor or force Huffman coding*/

  this.good_match = 0;
  /* Use a faster search when the previous match is longer than this */

  this.nice_match = 0; /* Stop searching when current match exceeds this */

              /* used by trees.c: */

  /* Didn't use ct_data typedef below to suppress compiler warning */

  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */

  // Use flat array of DOUBLE size, with interleaved fata,
  // because JS does not support effective
  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
  this.dyn_dtree  = new utils.Buf16((2 * D_CODES + 1) * 2);
  this.bl_tree    = new utils.Buf16((2 * BL_CODES + 1) * 2);
  zero(this.dyn_ltree);
  zero(this.dyn_dtree);
  zero(this.bl_tree);

  this.l_desc   = null;         /* desc. for literal tree */
  this.d_desc   = null;         /* desc. for distance tree */
  this.bl_desc  = null;         /* desc. for bit length tree */

  //ush bl_count[MAX_BITS+1];
  this.bl_count = new utils.Buf16(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
  this.heap = new utils.Buf16(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
  zero(this.heap);

  this.heap_len = 0;               /* number of elements in the heap */
  this.heap_max = 0;               /* element of largest frequency */
  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
   * The same heap array is used to build all trees.
   */

  this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
  zero(this.depth);
  /* Depth of each subtree used as tie breaker for trees of equal frequency
   */

  this.l_buf = 0;          /* buffer index for literals or lengths */

  this.lit_bufsize = 0;
  /* Size of match buffer for literals/lengths.  There are 4 reasons for
   * limiting lit_bufsize to 64K:
   *   - frequencies can be kept in 16 bit counters
   *   - if compression is not successful for the first block, all input
   *     data is still in the window so we can still emit a stored block even
   *     when input comes from standard input.  (This can also be done for
   *     all blocks if lit_bufsize is not greater than 32K.)
   *   - if compression is not successful for a file smaller than 64K, we can
   *     even emit a stored file instead of a stored block (saving 5 bytes).
   *     This is applicable only for zip (not gzip or zlib).
   *   - creating new Huffman trees less frequently may not provide fast
   *     adaptation to changes in the input data statistics. (Take for
   *     example a binary file with poorly compressible code followed by
   *     a highly compressible string table.) Smaller buffer sizes give
   *     fast adaptation but have of course the overhead of transmitting
   *     trees more frequently.
   *   - I can't count above 4
   */

  this.last_lit = 0;      /* running index in l_buf */

  this.d_buf = 0;
  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
   * the same number of elements. To use different lengths, an extra flag
   * array would be necessary.
   */

  this.opt_len = 0;       /* bit length of current block with optimal trees */
  this.static_len = 0;    /* bit length of current block with static trees */
  this.matches = 0;       /* number of string matches in current block */
  this.insert = 0;        /* bytes at end of window left to insert */


  this.bi_buf = 0;
  /* Output buffer. bits are inserted starting at the bottom (least
   * significant bits).
   */
  this.bi_valid = 0;
  /* Number of valid bits in bi_buf.  All bits above the last valid bit
   * are always zero.
   */

  // Used for window memory init. We safely ignore it for JS. That makes
  // sense only for pointers and memory check tools.
  //this.high_water = 0;
  /* High water mark offset in window for initialized bytes -- bytes above
   * this are set to zero in order to avoid memory check warnings when
   * longest match routines access bytes past the input.  This is then
   * updated to the new high water mark.
   */
}


function deflateResetKeep(strm) {
  var s;

  if (!strm || !strm.state) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.total_in = strm.total_out = 0;
  strm.data_type = Z_UNKNOWN;

  s = strm.state;
  s.pending = 0;
  s.pending_out = 0;

  if (s.wrap < 0) {
    s.wrap = -s.wrap;
    /* was made negative by deflate(..., Z_FINISH); */
  }
  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
  strm.adler = (s.wrap === 2) ?
    0  // crc32(0, Z_NULL, 0)
  :
    1; // adler32(0, Z_NULL, 0)
  s.last_flush = Z_NO_FLUSH;
  trees._tr_init(s);
  return Z_OK;
}


function deflateReset(strm) {
  var ret = deflateResetKeep(strm);
  if (ret === Z_OK) {
    lm_init(strm.state);
  }
  return ret;
}


function deflateSetHeader(strm, head) {
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
  strm.state.gzhead = head;
  return Z_OK;
}


function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
  if (!strm) { // === Z_NULL
    return Z_STREAM_ERROR;
  }
  var wrap = 1;

  if (level === Z_DEFAULT_COMPRESSION) {
    level = 6;
  }

  if (windowBits < 0) { /* suppress zlib wrapper */
    wrap = 0;
    windowBits = -windowBits;
  }

  else if (windowBits > 15) {
    wrap = 2;           /* write gzip wrapper instead */
    windowBits -= 16;
  }


  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
    strategy < 0 || strategy > Z_FIXED) {
    return err(strm, Z_STREAM_ERROR);
  }


  if (windowBits === 8) {
    windowBits = 9;
  }
  /* until 256-byte window bug fixed */

  var s = new DeflateState();

  strm.state = s;
  s.strm = strm;

  s.wrap = wrap;
  s.gzhead = null;
  s.w_bits = windowBits;
  s.w_size = 1 << s.w_bits;
  s.w_mask = s.w_size - 1;

  s.hash_bits = memLevel + 7;
  s.hash_size = 1 << s.hash_bits;
  s.hash_mask = s.hash_size - 1;
  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);

  s.window = new utils.Buf8(s.w_size * 2);
  s.head = new utils.Buf16(s.hash_size);
  s.prev = new utils.Buf16(s.w_size);

  // Don't need mem init magic for JS.
  //s.high_water = 0;  /* nothing written to s->window yet */

  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */

  s.pending_buf_size = s.lit_bufsize * 4;

  //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
  //s->pending_buf = (uchf *) overlay;
  s.pending_buf = new utils.Buf8(s.pending_buf_size);

  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
  //s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
  s.d_buf = 1 * s.lit_bufsize;

  //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
  s.l_buf = (1 + 2) * s.lit_bufsize;

  s.level = level;
  s.strategy = strategy;
  s.method = method;

  return deflateReset(strm);
}

function deflateInit(strm, level) {
  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
}


function deflate(strm, flush) {
  var old_flush, s;
  var beg, val; // for gzip header write only

  if (!strm || !strm.state ||
    flush > Z_BLOCK || flush < 0) {
    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
  }

  s = strm.state;

  if (!strm.output ||
      (!strm.input && strm.avail_in !== 0) ||
      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
  }

  s.strm = strm; /* just in case */
  old_flush = s.last_flush;
  s.last_flush = flush;

  /* Write the header */
  if (s.status === INIT_STATE) {

    if (s.wrap === 2) { // GZIP header
      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
      put_byte(s, 31);
      put_byte(s, 139);
      put_byte(s, 8);
      if (!s.gzhead) { // s->gzhead == Z_NULL
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, OS_CODE);
        s.status = BUSY_STATE;
      }
      else {
        put_byte(s, (s.gzhead.text ? 1 : 0) +
                    (s.gzhead.hcrc ? 2 : 0) +
                    (!s.gzhead.extra ? 0 : 4) +
                    (!s.gzhead.name ? 0 : 8) +
                    (!s.gzhead.comment ? 0 : 16)
                );
        put_byte(s, s.gzhead.time & 0xff);
        put_byte(s, (s.gzhead.time >> 8) & 0xff);
        put_byte(s, (s.gzhead.time >> 16) & 0xff);
        put_byte(s, (s.gzhead.time >> 24) & 0xff);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, s.gzhead.os & 0xff);
        if (s.gzhead.extra && s.gzhead.extra.length) {
          put_byte(s, s.gzhead.extra.length & 0xff);
          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
        }
        if (s.gzhead.hcrc) {
          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
        }
        s.gzindex = 0;
        s.status = EXTRA_STATE;
      }
    }
    else // DEFLATE header
    {
      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
      var level_flags = -1;

      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
        level_flags = 0;
      } else if (s.level < 6) {
        level_flags = 1;
      } else if (s.level === 6) {
        level_flags = 2;
      } else {
        level_flags = 3;
      }
      header |= (level_flags << 6);
      if (s.strstart !== 0) { header |= PRESET_DICT; }
      header += 31 - (header % 31);

      s.status = BUSY_STATE;
      putShortMSB(s, header);

      /* Save the adler32 of the preset dictionary: */
      if (s.strstart !== 0) {
        putShortMSB(s, strm.adler >>> 16);
        putShortMSB(s, strm.adler & 0xffff);
      }
      strm.adler = 1; // adler32(0L, Z_NULL, 0);
    }
  }

//#ifdef GZIP
  if (s.status === EXTRA_STATE) {
    if (s.gzhead.extra/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */

      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            break;
          }
        }
        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
        s.gzindex++;
      }
      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (s.gzindex === s.gzhead.extra.length) {
        s.gzindex = 0;
        s.status = NAME_STATE;
      }
    }
    else {
      s.status = NAME_STATE;
    }
  }
  if (s.status === NAME_STATE) {
    if (s.gzhead.name/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.name.length) {
          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.gzindex = 0;
        s.status = COMMENT_STATE;
      }
    }
    else {
      s.status = COMMENT_STATE;
    }
  }
  if (s.status === COMMENT_STATE) {
    if (s.gzhead.comment/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.comment.length) {
          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.status = HCRC_STATE;
      }
    }
    else {
      s.status = HCRC_STATE;
    }
  }
  if (s.status === HCRC_STATE) {
    if (s.gzhead.hcrc) {
      if (s.pending + 2 > s.pending_buf_size) {
        flush_pending(strm);
      }
      if (s.pending + 2 <= s.pending_buf_size) {
        put_byte(s, strm.adler & 0xff);
        put_byte(s, (strm.adler >> 8) & 0xff);
        strm.adler = 0; //crc32(0L, Z_NULL, 0);
        s.status = BUSY_STATE;
      }
    }
    else {
      s.status = BUSY_STATE;
    }
  }
//#endif

  /* Flush as much pending output as possible */
  if (s.pending !== 0) {
    flush_pending(strm);
    if (strm.avail_out === 0) {
      /* Since avail_out is 0, deflate will be called again with
       * more output space, but possibly with both pending and
       * avail_in equal to zero. There won't be anything to do,
       * but this is not an error situation so make sure we
       * return OK instead of BUF_ERROR at next call of deflate:
       */
      s.last_flush = -1;
      return Z_OK;
    }

    /* Make sure there is something to do and avoid duplicate consecutive
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
    flush !== Z_FINISH) {
    return err(strm, Z_BUF_ERROR);
  }

  /* User must not provide more input after the first FINISH: */
  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
    return err(strm, Z_BUF_ERROR);
  }

  /* Start a new block or continue the current one.
   */
  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
        configuration_table[s.level].func(s, flush));

    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
      s.status = FINISH_STATE;
    }
    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
      if (strm.avail_out === 0) {
        s.last_flush = -1;
        /* avoid BUF_ERROR next call, see above */
      }
      return Z_OK;
      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
       * of deflate should use the same flush parameter to make sure
       * that the flush is complete. So we don't have to output an
       * empty block here, this will be done at next call. This also
       * ensures that for a very small output buffer, we emit at most
       * one empty block.
       */
    }
    if (bstate === BS_BLOCK_DONE) {
      if (flush === Z_PARTIAL_FLUSH) {
        trees._tr_align(s);
      }
      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */

        trees._tr_stored_block(s, 0, 0, false);
        /* For a full flush, this empty block will be recognized
         * as a special marker by inflate_sync().
         */
        if (flush === Z_FULL_FLUSH) {
          /*** CLEAR_HASH(s); ***/             /* forget history */
          zero(s.head); // Fill with NIL (= 0);

          if (s.lookahead === 0) {
            s.strstart = 0;
            s.block_start = 0;
            s.insert = 0;
          }
        }
      }
      flush_pending(strm);
      if (strm.avail_out === 0) {
        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
        return Z_OK;
      }
    }
  }
  //Assert(strm->avail_out > 0, "bug2");
  //if (strm.avail_out <= 0) { throw new Error("bug2");}

  if (flush !== Z_FINISH) { return Z_OK; }
  if (s.wrap <= 0) { return Z_STREAM_END; }

  /* Write the trailer */
  if (s.wrap === 2) {
    put_byte(s, strm.adler & 0xff);
    put_byte(s, (strm.adler >> 8) & 0xff);
    put_byte(s, (strm.adler >> 16) & 0xff);
    put_byte(s, (strm.adler >> 24) & 0xff);
    put_byte(s, strm.total_in & 0xff);
    put_byte(s, (strm.total_in >> 8) & 0xff);
    put_byte(s, (strm.total_in >> 16) & 0xff);
    put_byte(s, (strm.total_in >> 24) & 0xff);
  }
  else
  {
    putShortMSB(s, strm.adler >>> 16);
    putShortMSB(s, strm.adler & 0xffff);
  }

  flush_pending(strm);
  /* If avail_out is zero, the application will call deflate again
   * to flush the rest.
   */
  if (s.wrap > 0) { s.wrap = -s.wrap; }
  /* write the trailer only once! */
  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
}

function deflateEnd(strm) {
  var status;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  status = strm.state.status;
  if (status !== INIT_STATE &&
    status !== EXTRA_STATE &&
    status !== NAME_STATE &&
    status !== COMMENT_STATE &&
    status !== HCRC_STATE &&
    status !== BUSY_STATE &&
    status !== FINISH_STATE
  ) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.state = null;

  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
}


/* =========================================================================
 * Initializes the compression dictionary from the given byte
 * sequence without producing any compressed output.
 */
function deflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var s;
  var str, n;
  var wrap;
  var avail;
  var next;
  var input;
  var tmpDict;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  s = strm.state;
  wrap = s.wrap;

  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
    return Z_STREAM_ERROR;
  }

  /* when using zlib wrappers, compute Adler-32 for provided dictionary */
  if (wrap === 1) {
    /* adler32(strm->adler, dictionary, dictLength); */
    strm.adler = adler32(strm.adler, dictionary, dictLength, 0);
  }

  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */

  /* if dictionary would fill window, just replace the history */
  if (dictLength >= s.w_size) {
    if (wrap === 0) {            /* already empty otherwise */
      /*** CLEAR_HASH(s); ***/
      zero(s.head); // Fill with NIL (= 0);
      s.strstart = 0;
      s.block_start = 0;
      s.insert = 0;
    }
    /* use the tail */
    // dictionary = dictionary.slice(dictLength - s.w_size);
    tmpDict = new utils.Buf8(s.w_size);
    utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);
    dictionary = tmpDict;
    dictLength = s.w_size;
  }
  /* insert dictionary into window and hash */
  avail = strm.avail_in;
  next = strm.next_in;
  input = strm.input;
  strm.avail_in = dictLength;
  strm.next_in = 0;
  strm.input = dictionary;
  fill_window(s);
  while (s.lookahead >= MIN_MATCH) {
    str = s.strstart;
    n = s.lookahead - (MIN_MATCH - 1);
    do {
      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

      s.prev[str & s.w_mask] = s.head[s.ins_h];

      s.head[s.ins_h] = str;
      str++;
    } while (--n);
    s.strstart = str;
    s.lookahead = MIN_MATCH - 1;
    fill_window(s);
  }
  s.strstart += s.lookahead;
  s.block_start = s.strstart;
  s.insert = s.lookahead;
  s.lookahead = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  strm.next_in = next;
  strm.input = input;
  strm.avail_in = avail;
  s.wrap = wrap;
  return Z_OK;
}


exports.deflateInit = deflateInit;
exports.deflateInit2 = deflateInit2;
exports.deflateReset = deflateReset;
exports.deflateResetKeep = deflateResetKeep;
exports.deflateSetHeader = deflateSetHeader;
exports.deflate = deflate;
exports.deflateEnd = deflateEnd;
exports.deflateSetDictionary = deflateSetDictionary;
exports.deflateInfo = 'pako deflate (from Nodeca project)';

/* Not implemented
exports.deflateBound = deflateBound;
exports.deflateCopy = deflateCopy;
exports.deflateParams = deflateParams;
exports.deflatePending = deflatePending;
exports.deflatePrime = deflatePrime;
exports.deflateTune = deflateTune;
*/

},{"../utils/common":140,"./adler32":141,"./crc32":143,"./messages":148,"./trees":149}],145:[function(require,module,exports){
'use strict';

// See state defs from inflate.js
var BAD = 30;       /* got a data error -- remain here until reset */
var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */

/*
   Decode literal, length, and distance codes and write out the resulting
   literal and match bytes until either not enough input or output is
   available, an end-of-block is encountered, or a data error is encountered.
   When large enough input and output buffers are supplied to inflate(), for
   example, a 16K input buffer and a 64K output buffer, more than 95% of the
   inflate execution time is spent in this routine.

   Entry assumptions:

        state.mode === LEN
        strm.avail_in >= 6
        strm.avail_out >= 258
        start >= strm.avail_out
        state.bits < 8

   On return, state.mode is one of:

        LEN -- ran out of enough output space or enough available input
        TYPE -- reached end of block code, inflate() to interpret next block
        BAD -- error in block data

   Notes:

    - The maximum input bits used by a length/distance pair is 15 bits for the
      length code, 5 bits for the length extra, 15 bits for the distance code,
      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
      Therefore if strm.avail_in >= 6, then there is enough input to avoid
      checking for available input while decoding.

    - The maximum bytes that a single length/distance pair can output is 258
      bytes, which is the maximum length that can be coded.  inflate_fast()
      requires strm.avail_out >= 258 for each loop to avoid checking for
      output space.
 */
module.exports = function inflate_fast(strm, start) {
  var state;
  var _in;                    /* local strm.input */
  var last;                   /* have enough input while in < last */
  var _out;                   /* local strm.output */
  var beg;                    /* inflate()'s initial strm.output */
  var end;                    /* while out < end, enough space available */
//#ifdef INFLATE_STRICT
  var dmax;                   /* maximum distance from zlib header */
//#endif
  var wsize;                  /* window size or zero if not using window */
  var whave;                  /* valid bytes in the window */
  var wnext;                  /* window write index */
  // Use `s_window` instead `window`, avoid conflict with instrumentation tools
  var s_window;               /* allocated sliding window, if wsize != 0 */
  var hold;                   /* local strm.hold */
  var bits;                   /* local strm.bits */
  var lcode;                  /* local strm.lencode */
  var dcode;                  /* local strm.distcode */
  var lmask;                  /* mask for first level of length codes */
  var dmask;                  /* mask for first level of distance codes */
  var here;                   /* retrieved table entry */
  var op;                     /* code bits, operation, extra bits, or */
                              /*  window position, window bytes to copy */
  var len;                    /* match length, unused bytes */
  var dist;                   /* match distance */
  var from;                   /* where to copy match from */
  var from_source;


  var input, output; // JS specific, because we have no pointers

  /* copy state to local variables */
  state = strm.state;
  //here = state.here;
  _in = strm.next_in;
  input = strm.input;
  last = _in + (strm.avail_in - 5);
  _out = strm.next_out;
  output = strm.output;
  beg = _out - (start - strm.avail_out);
  end = _out + (strm.avail_out - 257);
//#ifdef INFLATE_STRICT
  dmax = state.dmax;
//#endif
  wsize = state.wsize;
  whave = state.whave;
  wnext = state.wnext;
  s_window = state.window;
  hold = state.hold;
  bits = state.bits;
  lcode = state.lencode;
  dcode = state.distcode;
  lmask = (1 << state.lenbits) - 1;
  dmask = (1 << state.distbits) - 1;


  /* decode literals and length/distances until end-of-block or not enough
     input data or output space */

  top:
  do {
    if (bits < 15) {
      hold += input[_in++] << bits;
      bits += 8;
      hold += input[_in++] << bits;
      bits += 8;
    }

    here = lcode[hold & lmask];

    dolen:
    for (;;) { // Goto emulation
      op = here >>> 24/*here.bits*/;
      hold >>>= op;
      bits -= op;
      op = (here >>> 16) & 0xff/*here.op*/;
      if (op === 0) {                          /* literal */
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        output[_out++] = here & 0xffff/*here.val*/;
      }
      else if (op & 16) {                     /* length base */
        len = here & 0xffff/*here.val*/;
        op &= 15;                           /* number of extra bits */
        if (op) {
          if (bits < op) {
            hold += input[_in++] << bits;
            bits += 8;
          }
          len += hold & ((1 << op) - 1);
          hold >>>= op;
          bits -= op;
        }
        //Tracevv((stderr, "inflate:         length %u\n", len));
        if (bits < 15) {
          hold += input[_in++] << bits;
          bits += 8;
          hold += input[_in++] << bits;
          bits += 8;
        }
        here = dcode[hold & dmask];

        dodist:
        for (;;) { // goto emulation
          op = here >>> 24/*here.bits*/;
          hold >>>= op;
          bits -= op;
          op = (here >>> 16) & 0xff/*here.op*/;

          if (op & 16) {                      /* distance base */
            dist = here & 0xffff/*here.val*/;
            op &= 15;                       /* number of extra bits */
            if (bits < op) {
              hold += input[_in++] << bits;
              bits += 8;
              if (bits < op) {
                hold += input[_in++] << bits;
                bits += 8;
              }
            }
            dist += hold & ((1 << op) - 1);
//#ifdef INFLATE_STRICT
            if (dist > dmax) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break top;
            }
//#endif
            hold >>>= op;
            bits -= op;
            //Tracevv((stderr, "inflate:         distance %u\n", dist));
            op = _out - beg;                /* max distance in output */
            if (dist > op) {                /* see if copy from window */
              op = dist - op;               /* distance back in window */
              if (op > whave) {
                if (state.sane) {
                  strm.msg = 'invalid distance too far back';
                  state.mode = BAD;
                  break top;
                }

// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//                if (len <= op - whave) {
//                  do {
//                    output[_out++] = 0;
//                  } while (--len);
//                  continue top;
//                }
//                len -= op - whave;
//                do {
//                  output[_out++] = 0;
//                } while (--op > whave);
//                if (op === 0) {
//                  from = _out - dist;
//                  do {
//                    output[_out++] = output[from++];
//                  } while (--len);
//                  continue top;
//                }
//#endif
              }
              from = 0; // window index
              from_source = s_window;
              if (wnext === 0) {           /* very common case */
                from += wsize - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              else if (wnext < op) {      /* wrap around window */
                from += wsize + wnext - op;
                op -= wnext;
                if (op < len) {         /* some from end of window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = 0;
                  if (wnext < len) {  /* some from start of window */
                    op = wnext;
                    len -= op;
                    do {
                      output[_out++] = s_window[from++];
                    } while (--op);
                    from = _out - dist;      /* rest from output */
                    from_source = output;
                  }
                }
              }
              else {                      /* contiguous in window */
                from += wnext - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              while (len > 2) {
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                len -= 3;
              }
              if (len) {
                output[_out++] = from_source[from++];
                if (len > 1) {
                  output[_out++] = from_source[from++];
                }
              }
            }
            else {
              from = _out - dist;          /* copy direct from output */
              do {                        /* minimum length is three */
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                len -= 3;
              } while (len > 2);
              if (len) {
                output[_out++] = output[from++];
                if (len > 1) {
                  output[_out++] = output[from++];
                }
              }
            }
          }
          else if ((op & 64) === 0) {          /* 2nd level distance code */
            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
            continue dodist;
          }
          else {
            strm.msg = 'invalid distance code';
            state.mode = BAD;
            break top;
          }

          break; // need to emulate goto via "continue"
        }
      }
      else if ((op & 64) === 0) {              /* 2nd level length code */
        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
        continue dolen;
      }
      else if (op & 32) {                     /* end-of-block */
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.mode = TYPE;
        break top;
      }
      else {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break top;
      }

      break; // need to emulate goto via "continue"
    }
  } while (_in < last && _out < end);

  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
  len = bits >> 3;
  _in -= len;
  bits -= len << 3;
  hold &= (1 << bits) - 1;

  /* update state and return */
  strm.next_in = _in;
  strm.next_out = _out;
  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
  state.hold = hold;
  state.bits = bits;
  return;
};

},{}],146:[function(require,module,exports){
'use strict';


var utils         = require('../utils/common');
var adler32       = require('./adler32');
var crc32         = require('./crc32');
var inflate_fast  = require('./inffast');
var inflate_table = require('./inftrees');

var CODES = 0;
var LENS = 1;
var DISTS = 2;

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
//var Z_NO_FLUSH      = 0;
//var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
//var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;

/* The deflate compression method */
var Z_DEFLATED  = 8;


/* STATES ====================================================================*/
/* ===========================================================================*/


var    HEAD = 1;       /* i: waiting for magic header */
var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
var    TIME = 3;       /* i: waiting for modification time (gzip) */
var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
var    NAME = 7;       /* i: waiting for end of file name (gzip) */
var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
var    HCRC = 9;       /* i: waiting for header crc (gzip) */
var    DICTID = 10;    /* i: waiting for dictionary check value */
var    DICT = 11;      /* waiting for inflateSetDictionary() call */
var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
var        STORED = 14;    /* i: waiting for stored size (length and complement) */
var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
var        LENLENS = 18;   /* i: waiting for code length code lengths */
var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
var            LEN = 21;       /* i: waiting for length/lit/eob code */
var            LENEXT = 22;    /* i: waiting for length extra bits */
var            DIST = 23;      /* i: waiting for distance code */
var            DISTEXT = 24;   /* i: waiting for distance extra bits */
var            MATCH = 25;     /* o: waiting for output space to copy string */
var            LIT = 26;       /* o: waiting for output space to write literal */
var    CHECK = 27;     /* i: waiting for 32-bit check value */
var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
var    DONE = 29;      /* finished check, done -- remain here until reset */
var    BAD = 30;       /* got a data error -- remain here until reset */
var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */

/* ===========================================================================*/



var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);

var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_WBITS = MAX_WBITS;


function zswap32(q) {
  return  (((q >>> 24) & 0xff) +
          ((q >>> 8) & 0xff00) +
          ((q & 0xff00) << 8) +
          ((q & 0xff) << 24));
}


function InflateState() {
  this.mode = 0;             /* current inflate mode */
  this.last = false;          /* true if processing last block */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.havedict = false;      /* true if dictionary provided */
  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
  this.check = 0;             /* protected copy of check value */
  this.total = 0;             /* protected copy of output count */
  // TODO: may be {}
  this.head = null;           /* where to save gzip header information */

  /* sliding window */
  this.wbits = 0;             /* log base 2 of requested window size */
  this.wsize = 0;             /* window size or zero if not using window */
  this.whave = 0;             /* valid bytes in the window */
  this.wnext = 0;             /* window write index */
  this.window = null;         /* allocated sliding window, if needed */

  /* bit accumulator */
  this.hold = 0;              /* input bit accumulator */
  this.bits = 0;              /* number of bits in "in" */

  /* for string and stored block copying */
  this.length = 0;            /* literal or length of data to copy */
  this.offset = 0;            /* distance back to copy string from */

  /* for table and code decoding */
  this.extra = 0;             /* extra bits needed */

  /* fixed and dynamic code tables */
  this.lencode = null;          /* starting table for length/literal codes */
  this.distcode = null;         /* starting table for distance codes */
  this.lenbits = 0;           /* index bits for lencode */
  this.distbits = 0;          /* index bits for distcode */

  /* dynamic table building */
  this.ncode = 0;             /* number of code length code lengths */
  this.nlen = 0;              /* number of length code lengths */
  this.ndist = 0;             /* number of distance code lengths */
  this.have = 0;              /* number of code lengths in lens[] */
  this.next = null;              /* next available space in codes[] */

  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
  this.work = new utils.Buf16(288); /* work area for code table building */

  /*
   because we don't have pointers in js, we use lencode and distcode directly
   as buffers so we don't need codes
  */
  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
  this.sane = 0;                   /* if false, allow invalid distance too far */
  this.back = 0;                   /* bits back of last unprocessed length/lit */
  this.was = 0;                    /* initial length of match */
}

function inflateResetKeep(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  strm.total_in = strm.total_out = state.total = 0;
  strm.msg = ''; /*Z_NULL*/
  if (state.wrap) {       /* to support ill-conceived Java test suite */
    strm.adler = state.wrap & 1;
  }
  state.mode = HEAD;
  state.last = 0;
  state.havedict = 0;
  state.dmax = 32768;
  state.head = null/*Z_NULL*/;
  state.hold = 0;
  state.bits = 0;
  //state.lencode = state.distcode = state.next = state.codes;
  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);

  state.sane = 1;
  state.back = -1;
  //Tracev((stderr, "inflate: reset\n"));
  return Z_OK;
}

function inflateReset(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  state.wsize = 0;
  state.whave = 0;
  state.wnext = 0;
  return inflateResetKeep(strm);

}

function inflateReset2(strm, windowBits) {
  var wrap;
  var state;

  /* get the state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;

  /* extract wrap request from windowBits parameter */
  if (windowBits < 0) {
    wrap = 0;
    windowBits = -windowBits;
  }
  else {
    wrap = (windowBits >> 4) + 1;
    if (windowBits < 48) {
      windowBits &= 15;
    }
  }

  /* set number of window bits, free window if different */
  if (windowBits && (windowBits < 8 || windowBits > 15)) {
    return Z_STREAM_ERROR;
  }
  if (state.window !== null && state.wbits !== windowBits) {
    state.window = null;
  }

  /* update state and reset the rest of it */
  state.wrap = wrap;
  state.wbits = windowBits;
  return inflateReset(strm);
}

function inflateInit2(strm, windowBits) {
  var ret;
  var state;

  if (!strm) { return Z_STREAM_ERROR; }
  //strm.msg = Z_NULL;                 /* in case we return an error */

  state = new InflateState();

  //if (state === Z_NULL) return Z_MEM_ERROR;
  //Tracev((stderr, "inflate: allocated\n"));
  strm.state = state;
  state.window = null/*Z_NULL*/;
  ret = inflateReset2(strm, windowBits);
  if (ret !== Z_OK) {
    strm.state = null/*Z_NULL*/;
  }
  return ret;
}

function inflateInit(strm) {
  return inflateInit2(strm, DEF_WBITS);
}


/*
 Return state with length and distance decoding tables and index sizes set to
 fixed code decoding.  Normally this returns fixed tables from inffixed.h.
 If BUILDFIXED is defined, then instead this routine builds the tables the
 first time it's called, and returns those tables the first time and
 thereafter.  This reduces the size of the code by about 2K bytes, in
 exchange for a little execution time.  However, BUILDFIXED should not be
 used for threaded applications, since the rewriting of the tables and virgin
 may not be thread-safe.
 */
var virgin = true;

var lenfix, distfix; // We have no pointers in JS, so keep tables separate

function fixedtables(state) {
  /* build fixed huffman tables if first call (may not be thread safe) */
  if (virgin) {
    var sym;

    lenfix = new utils.Buf32(512);
    distfix = new utils.Buf32(32);

    /* literal/length table */
    sym = 0;
    while (sym < 144) { state.lens[sym++] = 8; }
    while (sym < 256) { state.lens[sym++] = 9; }
    while (sym < 280) { state.lens[sym++] = 7; }
    while (sym < 288) { state.lens[sym++] = 8; }

    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });

    /* distance table */
    sym = 0;
    while (sym < 32) { state.lens[sym++] = 5; }

    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });

    /* do this just once */
    virgin = false;
  }

  state.lencode = lenfix;
  state.lenbits = 9;
  state.distcode = distfix;
  state.distbits = 5;
}


/*
 Update the window with the last wsize (normally 32K) bytes written before
 returning.  If window does not exist yet, create it.  This is only called
 when a window is already in use, or when output has been written during this
 inflate call, but the end of the deflate stream has not been reached yet.
 It is also called to create a window for dictionary data when a dictionary
 is loaded.

 Providing output buffers larger than 32K to inflate() should provide a speed
 advantage, since only the last 32K of output is copied to the sliding window
 upon return from inflate(), and since all distances after the first 32K of
 output will fall in the output data, making match copies simpler and faster.
 The advantage may be dependent on the size of the processor's data caches.
 */
function updatewindow(strm, src, end, copy) {
  var dist;
  var state = strm.state;

  /* if it hasn't been done already, allocate space for the window */
  if (state.window === null) {
    state.wsize = 1 << state.wbits;
    state.wnext = 0;
    state.whave = 0;

    state.window = new utils.Buf8(state.wsize);
  }

  /* copy state->wsize or less output bytes into the circular window */
  if (copy >= state.wsize) {
    utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);
    state.wnext = 0;
    state.whave = state.wsize;
  }
  else {
    dist = state.wsize - state.wnext;
    if (dist > copy) {
      dist = copy;
    }
    //zmemcpy(state->window + state->wnext, end - copy, dist);
    utils.arraySet(state.window, src, end - copy, dist, state.wnext);
    copy -= dist;
    if (copy) {
      //zmemcpy(state->window, end - copy, copy);
      utils.arraySet(state.window, src, end - copy, copy, 0);
      state.wnext = copy;
      state.whave = state.wsize;
    }
    else {
      state.wnext += dist;
      if (state.wnext === state.wsize) { state.wnext = 0; }
      if (state.whave < state.wsize) { state.whave += dist; }
    }
  }
  return 0;
}

function inflate(strm, flush) {
  var state;
  var input, output;          // input/output buffers
  var next;                   /* next input INDEX */
  var put;                    /* next output INDEX */
  var have, left;             /* available input and output */
  var hold;                   /* bit buffer */
  var bits;                   /* bits in bit buffer */
  var _in, _out;              /* save starting available input and output */
  var copy;                   /* number of stored or match bytes to copy */
  var from;                   /* where to copy match bytes from */
  var from_source;
  var here = 0;               /* current decoding table entry */
  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
  //var last;                   /* parent table entry */
  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
  var len;                    /* length to copy for repeats, bits to drop */
  var ret;                    /* return code */
  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
  var opts;

  var n; // temporary var for NEED_BITS

  var order = /* permutation of code lengths */
    [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];


  if (!strm || !strm.state || !strm.output ||
      (!strm.input && strm.avail_in !== 0)) {
    return Z_STREAM_ERROR;
  }

  state = strm.state;
  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */


  //--- LOAD() ---
  put = strm.next_out;
  output = strm.output;
  left = strm.avail_out;
  next = strm.next_in;
  input = strm.input;
  have = strm.avail_in;
  hold = state.hold;
  bits = state.bits;
  //---

  _in = have;
  _out = left;
  ret = Z_OK;

  inf_leave: // goto emulation
  for (;;) {
    switch (state.mode) {
    case HEAD:
      if (state.wrap === 0) {
        state.mode = TYPEDO;
        break;
      }
      //=== NEEDBITS(16);
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
        state.check = 0/*crc32(0L, Z_NULL, 0)*/;
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//

        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = FLAGS;
        break;
      }
      state.flags = 0;           /* expect zlib header */
      if (state.head) {
        state.head.done = false;
      }
      if (!(state.wrap & 1) ||   /* check if zlib header allowed */
        (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
        strm.msg = 'incorrect header check';
        state.mode = BAD;
        break;
      }
      if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
        strm.msg = 'unknown compression method';
        state.mode = BAD;
        break;
      }
      //--- DROPBITS(4) ---//
      hold >>>= 4;
      bits -= 4;
      //---//
      len = (hold & 0x0f)/*BITS(4)*/ + 8;
      if (state.wbits === 0) {
        state.wbits = len;
      }
      else if (len > state.wbits) {
        strm.msg = 'invalid window size';
        state.mode = BAD;
        break;
      }
      state.dmax = 1 << len;
      //Tracev((stderr, "inflate:   zlib header ok\n"));
      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
      state.mode = hold & 0x200 ? DICTID : TYPE;
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      break;
    case FLAGS:
      //=== NEEDBITS(16); */
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.flags = hold;
      if ((state.flags & 0xff) !== Z_DEFLATED) {
        strm.msg = 'unknown compression method';
        state.mode = BAD;
        break;
      }
      if (state.flags & 0xe000) {
        strm.msg = 'unknown header flags set';
        state.mode = BAD;
        break;
      }
      if (state.head) {
        state.head.text = ((hold >> 8) & 1);
      }
      if (state.flags & 0x0200) {
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = TIME;
      /* falls through */
    case TIME:
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if (state.head) {
        state.head.time = hold;
      }
      if (state.flags & 0x0200) {
        //=== CRC4(state.check, hold)
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        hbuf[2] = (hold >>> 16) & 0xff;
        hbuf[3] = (hold >>> 24) & 0xff;
        state.check = crc32(state.check, hbuf, 4, 0);
        //===
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = OS;
      /* falls through */
    case OS:
      //=== NEEDBITS(16); */
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if (state.head) {
        state.head.xflags = (hold & 0xff);
        state.head.os = (hold >> 8);
      }
      if (state.flags & 0x0200) {
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = EXLEN;
      /* falls through */
    case EXLEN:
      if (state.flags & 0x0400) {
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.length = hold;
        if (state.head) {
          state.head.extra_len = hold;
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
      }
      else if (state.head) {
        state.head.extra = null/*Z_NULL*/;
      }
      state.mode = EXTRA;
      /* falls through */
    case EXTRA:
      if (state.flags & 0x0400) {
        copy = state.length;
        if (copy > have) { copy = have; }
        if (copy) {
          if (state.head) {
            len = state.head.extra_len - state.length;
            if (!state.head.extra) {
              // Use untyped array for more conveniend processing later
              state.head.extra = new Array(state.head.extra_len);
            }
            utils.arraySet(
              state.head.extra,
              input,
              next,
              // extra field is limited to 65536 bytes
              // - no need for additional size check
              copy,
              /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
              len
            );
            //zmemcpy(state.head.extra + len, next,
            //        len + copy > state.head.extra_max ?
            //        state.head.extra_max - len : copy);
          }
          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          state.length -= copy;
        }
        if (state.length) { break inf_leave; }
      }
      state.length = 0;
      state.mode = NAME;
      /* falls through */
    case NAME:
      if (state.flags & 0x0800) {
        if (have === 0) { break inf_leave; }
        copy = 0;
        do {
          // TODO: 2 or 1 bytes?
          len = input[next + copy++];
          /* use constant limit because in js we should not preallocate memory */
          if (state.head && len &&
              (state.length < 65536 /*state.head.name_max*/)) {
            state.head.name += String.fromCharCode(len);
          }
        } while (len && copy < have);

        if (state.flags & 0x0200) {
          state.check = crc32(state.check, input, copy, next);
        }
        have -= copy;
        next += copy;
        if (len) { break inf_leave; }
      }
      else if (state.head) {
        state.head.name = null;
      }
      state.length = 0;
      state.mode = COMMENT;
      /* falls through */
    case COMMENT:
      if (state.flags & 0x1000) {
        if (have === 0) { break inf_leave; }
        copy = 0;
        do {
          len = input[next + copy++];
          /* use constant limit because in js we should not preallocate memory */
          if (state.head && len &&
              (state.length < 65536 /*state.head.comm_max*/)) {
            state.head.comment += String.fromCharCode(len);
          }
        } while (len && copy < have);
        if (state.flags & 0x0200) {
          state.check = crc32(state.check, input, copy, next);
        }
        have -= copy;
        next += copy;
        if (len) { break inf_leave; }
      }
      else if (state.head) {
        state.head.comment = null;
      }
      state.mode = HCRC;
      /* falls through */
    case HCRC:
      if (state.flags & 0x0200) {
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (hold !== (state.check & 0xffff)) {
          strm.msg = 'header crc mismatch';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
      }
      if (state.head) {
        state.head.hcrc = ((state.flags >> 9) & 1);
        state.head.done = true;
      }
      strm.adler = state.check = 0;
      state.mode = TYPE;
      break;
    case DICTID:
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      strm.adler = state.check = zswap32(hold);
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = DICT;
      /* falls through */
    case DICT:
      if (state.havedict === 0) {
        //--- RESTORE() ---
        strm.next_out = put;
        strm.avail_out = left;
        strm.next_in = next;
        strm.avail_in = have;
        state.hold = hold;
        state.bits = bits;
        //---
        return Z_NEED_DICT;
      }
      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
      state.mode = TYPE;
      /* falls through */
    case TYPE:
      if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case TYPEDO:
      if (state.last) {
        //--- BYTEBITS() ---//
        hold >>>= bits & 7;
        bits -= bits & 7;
        //---//
        state.mode = CHECK;
        break;
      }
      //=== NEEDBITS(3); */
      while (bits < 3) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.last = (hold & 0x01)/*BITS(1)*/;
      //--- DROPBITS(1) ---//
      hold >>>= 1;
      bits -= 1;
      //---//

      switch ((hold & 0x03)/*BITS(2)*/) {
      case 0:                             /* stored block */
        //Tracev((stderr, "inflate:     stored block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = STORED;
        break;
      case 1:                             /* fixed block */
        fixedtables(state);
        //Tracev((stderr, "inflate:     fixed codes block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = LEN_;             /* decode codes */
        if (flush === Z_TREES) {
          //--- DROPBITS(2) ---//
          hold >>>= 2;
          bits -= 2;
          //---//
          break inf_leave;
        }
        break;
      case 2:                             /* dynamic block */
        //Tracev((stderr, "inflate:     dynamic codes block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = TABLE;
        break;
      case 3:
        strm.msg = 'invalid block type';
        state.mode = BAD;
      }
      //--- DROPBITS(2) ---//
      hold >>>= 2;
      bits -= 2;
      //---//
      break;
    case STORED:
      //--- BYTEBITS() ---// /* go to byte boundary */
      hold >>>= bits & 7;
      bits -= bits & 7;
      //---//
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
        strm.msg = 'invalid stored block lengths';
        state.mode = BAD;
        break;
      }
      state.length = hold & 0xffff;
      //Tracev((stderr, "inflate:       stored length %u\n",
      //        state.length));
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = COPY_;
      if (flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case COPY_:
      state.mode = COPY;
      /* falls through */
    case COPY:
      copy = state.length;
      if (copy) {
        if (copy > have) { copy = have; }
        if (copy > left) { copy = left; }
        if (copy === 0) { break inf_leave; }
        //--- zmemcpy(put, next, copy); ---
        utils.arraySet(output, input, next, copy, put);
        //---//
        have -= copy;
        next += copy;
        left -= copy;
        put += copy;
        state.length -= copy;
        break;
      }
      //Tracev((stderr, "inflate:       stored end\n"));
      state.mode = TYPE;
      break;
    case TABLE:
      //=== NEEDBITS(14); */
      while (bits < 14) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
      //--- DROPBITS(5) ---//
      hold >>>= 5;
      bits -= 5;
      //---//
      state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
      //--- DROPBITS(5) ---//
      hold >>>= 5;
      bits -= 5;
      //---//
      state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
      //--- DROPBITS(4) ---//
      hold >>>= 4;
      bits -= 4;
      //---//
//#ifndef PKZIP_BUG_WORKAROUND
      if (state.nlen > 286 || state.ndist > 30) {
        strm.msg = 'too many length or distance symbols';
        state.mode = BAD;
        break;
      }
//#endif
      //Tracev((stderr, "inflate:       table sizes ok\n"));
      state.have = 0;
      state.mode = LENLENS;
      /* falls through */
    case LENLENS:
      while (state.have < state.ncode) {
        //=== NEEDBITS(3);
        while (bits < 3) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
        //--- DROPBITS(3) ---//
        hold >>>= 3;
        bits -= 3;
        //---//
      }
      while (state.have < 19) {
        state.lens[order[state.have++]] = 0;
      }
      // We have separate tables & no pointers. 2 commented lines below not needed.
      //state.next = state.codes;
      //state.lencode = state.next;
      // Switch to use dynamic table
      state.lencode = state.lendyn;
      state.lenbits = 7;

      opts = { bits: state.lenbits };
      ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
      state.lenbits = opts.bits;

      if (ret) {
        strm.msg = 'invalid code lengths set';
        state.mode = BAD;
        break;
      }
      //Tracev((stderr, "inflate:       code lengths ok\n"));
      state.have = 0;
      state.mode = CODELENS;
      /* falls through */
    case CODELENS:
      while (state.have < state.nlen + state.ndist) {
        for (;;) {
          here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if (here_val < 16) {
          //--- DROPBITS(here.bits) ---//
          hold >>>= here_bits;
          bits -= here_bits;
          //---//
          state.lens[state.have++] = here_val;
        }
        else {
          if (here_val === 16) {
            //=== NEEDBITS(here.bits + 2);
            n = here_bits + 2;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            if (state.have === 0) {
              strm.msg = 'invalid bit length repeat';
              state.mode = BAD;
              break;
            }
            len = state.lens[state.have - 1];
            copy = 3 + (hold & 0x03);//BITS(2);
            //--- DROPBITS(2) ---//
            hold >>>= 2;
            bits -= 2;
            //---//
          }
          else if (here_val === 17) {
            //=== NEEDBITS(here.bits + 3);
            n = here_bits + 3;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            len = 0;
            copy = 3 + (hold & 0x07);//BITS(3);
            //--- DROPBITS(3) ---//
            hold >>>= 3;
            bits -= 3;
            //---//
          }
          else {
            //=== NEEDBITS(here.bits + 7);
            n = here_bits + 7;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            len = 0;
            copy = 11 + (hold & 0x7f);//BITS(7);
            //--- DROPBITS(7) ---//
            hold >>>= 7;
            bits -= 7;
            //---//
          }
          if (state.have + copy > state.nlen + state.ndist) {
            strm.msg = 'invalid bit length repeat';
            state.mode = BAD;
            break;
          }
          while (copy--) {
            state.lens[state.have++] = len;
          }
        }
      }

      /* handle error breaks in while */
      if (state.mode === BAD) { break; }

      /* check for end-of-block code (better have one) */
      if (state.lens[256] === 0) {
        strm.msg = 'invalid code -- missing end-of-block';
        state.mode = BAD;
        break;
      }

      /* build code tables -- note: do not change the lenbits or distbits
         values here (9 and 6) without reading the comments in inftrees.h
         concerning the ENOUGH constants, which depend on those values */
      state.lenbits = 9;

      opts = { bits: state.lenbits };
      ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
      // We have separate tables & no pointers. 2 commented lines below not needed.
      // state.next_index = opts.table_index;
      state.lenbits = opts.bits;
      // state.lencode = state.next;

      if (ret) {
        strm.msg = 'invalid literal/lengths set';
        state.mode = BAD;
        break;
      }

      state.distbits = 6;
      //state.distcode.copy(state.codes);
      // Switch to use dynamic table
      state.distcode = state.distdyn;
      opts = { bits: state.distbits };
      ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
      // We have separate tables & no pointers. 2 commented lines below not needed.
      // state.next_index = opts.table_index;
      state.distbits = opts.bits;
      // state.distcode = state.next;

      if (ret) {
        strm.msg = 'invalid distances set';
        state.mode = BAD;
        break;
      }
      //Tracev((stderr, 'inflate:       codes ok\n'));
      state.mode = LEN_;
      if (flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case LEN_:
      state.mode = LEN;
      /* falls through */
    case LEN:
      if (have >= 6 && left >= 258) {
        //--- RESTORE() ---
        strm.next_out = put;
        strm.avail_out = left;
        strm.next_in = next;
        strm.avail_in = have;
        state.hold = hold;
        state.bits = bits;
        //---
        inflate_fast(strm, _out);
        //--- LOAD() ---
        put = strm.next_out;
        output = strm.output;
        left = strm.avail_out;
        next = strm.next_in;
        input = strm.input;
        have = strm.avail_in;
        hold = state.hold;
        bits = state.bits;
        //---

        if (state.mode === TYPE) {
          state.back = -1;
        }
        break;
      }
      state.back = 0;
      for (;;) {
        here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/
        here_bits = here >>> 24;
        here_op = (here >>> 16) & 0xff;
        here_val = here & 0xffff;

        if (here_bits <= bits) { break; }
        //--- PULLBYTE() ---//
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
        //---//
      }
      if (here_op && (here_op & 0xf0) === 0) {
        last_bits = here_bits;
        last_op = here_op;
        last_val = here_val;
        for (;;) {
          here = state.lencode[last_val +
                  ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((last_bits + here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        //--- DROPBITS(last.bits) ---//
        hold >>>= last_bits;
        bits -= last_bits;
        //---//
        state.back += last_bits;
      }
      //--- DROPBITS(here.bits) ---//
      hold >>>= here_bits;
      bits -= here_bits;
      //---//
      state.back += here_bits;
      state.length = here_val;
      if (here_op === 0) {
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        state.mode = LIT;
        break;
      }
      if (here_op & 32) {
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.back = -1;
        state.mode = TYPE;
        break;
      }
      if (here_op & 64) {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break;
      }
      state.extra = here_op & 15;
      state.mode = LENEXT;
      /* falls through */
    case LENEXT:
      if (state.extra) {
        //=== NEEDBITS(state.extra);
        n = state.extra;
        while (bits < n) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
        //--- DROPBITS(state.extra) ---//
        hold >>>= state.extra;
        bits -= state.extra;
        //---//
        state.back += state.extra;
      }
      //Tracevv((stderr, "inflate:         length %u\n", state.length));
      state.was = state.length;
      state.mode = DIST;
      /* falls through */
    case DIST:
      for (;;) {
        here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/
        here_bits = here >>> 24;
        here_op = (here >>> 16) & 0xff;
        here_val = here & 0xffff;

        if ((here_bits) <= bits) { break; }
        //--- PULLBYTE() ---//
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
        //---//
      }
      if ((here_op & 0xf0) === 0) {
        last_bits = here_bits;
        last_op = here_op;
        last_val = here_val;
        for (;;) {
          here = state.distcode[last_val +
                  ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((last_bits + here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        //--- DROPBITS(last.bits) ---//
        hold >>>= last_bits;
        bits -= last_bits;
        //---//
        state.back += last_bits;
      }
      //--- DROPBITS(here.bits) ---//
      hold >>>= here_bits;
      bits -= here_bits;
      //---//
      state.back += here_bits;
      if (here_op & 64) {
        strm.msg = 'invalid distance code';
        state.mode = BAD;
        break;
      }
      state.offset = here_val;
      state.extra = (here_op) & 15;
      state.mode = DISTEXT;
      /* falls through */
    case DISTEXT:
      if (state.extra) {
        //=== NEEDBITS(state.extra);
        n = state.extra;
        while (bits < n) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
        //--- DROPBITS(state.extra) ---//
        hold >>>= state.extra;
        bits -= state.extra;
        //---//
        state.back += state.extra;
      }
//#ifdef INFLATE_STRICT
      if (state.offset > state.dmax) {
        strm.msg = 'invalid distance too far back';
        state.mode = BAD;
        break;
      }
//#endif
      //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
      state.mode = MATCH;
      /* falls through */
    case MATCH:
      if (left === 0) { break inf_leave; }
      copy = _out - left;
      if (state.offset > copy) {         /* copy from window */
        copy = state.offset - copy;
        if (copy > state.whave) {
          if (state.sane) {
            strm.msg = 'invalid distance too far back';
            state.mode = BAD;
            break;
          }
// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//          Trace((stderr, "inflate.c too far\n"));
//          copy -= state.whave;
//          if (copy > state.length) { copy = state.length; }
//          if (copy > left) { copy = left; }
//          left -= copy;
//          state.length -= copy;
//          do {
//            output[put++] = 0;
//          } while (--copy);
//          if (state.length === 0) { state.mode = LEN; }
//          break;
//#endif
        }
        if (copy > state.wnext) {
          copy -= state.wnext;
          from = state.wsize - copy;
        }
        else {
          from = state.wnext - copy;
        }
        if (copy > state.length) { copy = state.length; }
        from_source = state.window;
      }
      else {                              /* copy from output */
        from_source = output;
        from = put - state.offset;
        copy = state.length;
      }
      if (copy > left) { copy = left; }
      left -= copy;
      state.length -= copy;
      do {
        output[put++] = from_source[from++];
      } while (--copy);
      if (state.length === 0) { state.mode = LEN; }
      break;
    case LIT:
      if (left === 0) { break inf_leave; }
      output[put++] = state.length;
      left--;
      state.mode = LEN;
      break;
    case CHECK:
      if (state.wrap) {
        //=== NEEDBITS(32);
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          // Use '|' insdead of '+' to make sure that result is signed
          hold |= input[next++] << bits;
          bits += 8;
        }
        //===//
        _out -= left;
        strm.total_out += _out;
        state.total += _out;
        if (_out) {
          strm.adler = state.check =
              /*UPDATE(state.check, put - _out, _out);*/
              (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));

        }
        _out = left;
        // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too
        if ((state.flags ? hold : zswap32(hold)) !== state.check) {
          strm.msg = 'incorrect data check';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        //Tracev((stderr, "inflate:   check matches trailer\n"));
      }
      state.mode = LENGTH;
      /* falls through */
    case LENGTH:
      if (state.wrap && state.flags) {
        //=== NEEDBITS(32);
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (hold !== (state.total & 0xffffffff)) {
          strm.msg = 'incorrect length check';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        //Tracev((stderr, "inflate:   length matches trailer\n"));
      }
      state.mode = DONE;
      /* falls through */
    case DONE:
      ret = Z_STREAM_END;
      break inf_leave;
    case BAD:
      ret = Z_DATA_ERROR;
      break inf_leave;
    case MEM:
      return Z_MEM_ERROR;
    case SYNC:
      /* falls through */
    default:
      return Z_STREAM_ERROR;
    }
  }

  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"

  /*
     Return from inflate(), updating the total counts and the check value.
     If there was no progress during the inflate() call, return a buffer
     error.  Call updatewindow() to create and/or update the window state.
     Note: a memory error from inflate() is non-recoverable.
   */

  //--- RESTORE() ---
  strm.next_out = put;
  strm.avail_out = left;
  strm.next_in = next;
  strm.avail_in = have;
  state.hold = hold;
  state.bits = bits;
  //---

  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
                      (state.mode < CHECK || flush !== Z_FINISH))) {
    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
      state.mode = MEM;
      return Z_MEM_ERROR;
    }
  }
  _in -= strm.avail_in;
  _out -= strm.avail_out;
  strm.total_in += _in;
  strm.total_out += _out;
  state.total += _out;
  if (state.wrap && _out) {
    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
  }
  strm.data_type = state.bits + (state.last ? 64 : 0) +
                    (state.mode === TYPE ? 128 : 0) +
                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
    ret = Z_BUF_ERROR;
  }
  return ret;
}

function inflateEnd(strm) {

  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
    return Z_STREAM_ERROR;
  }

  var state = strm.state;
  if (state.window) {
    state.window = null;
  }
  strm.state = null;
  return Z_OK;
}

function inflateGetHeader(strm, head) {
  var state;

  /* check state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }

  /* save header structure */
  state.head = head;
  head.done = false;
  return Z_OK;
}

function inflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var state;
  var dictid;
  var ret;

  /* check state */
  if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }
  state = strm.state;

  if (state.wrap !== 0 && state.mode !== DICT) {
    return Z_STREAM_ERROR;
  }

  /* check for correct dictionary identifier */
  if (state.mode === DICT) {
    dictid = 1; /* adler32(0, null, 0)*/
    /* dictid = adler32(dictid, dictionary, dictLength); */
    dictid = adler32(dictid, dictionary, dictLength, 0);
    if (dictid !== state.check) {
      return Z_DATA_ERROR;
    }
  }
  /* copy dictionary to window using updatewindow(), which will amend the
   existing dictionary if appropriate */
  ret = updatewindow(strm, dictionary, dictLength, dictLength);
  if (ret) {
    state.mode = MEM;
    return Z_MEM_ERROR;
  }
  state.havedict = 1;
  // Tracev((stderr, "inflate:   dictionary set\n"));
  return Z_OK;
}

exports.inflateReset = inflateReset;
exports.inflateReset2 = inflateReset2;
exports.inflateResetKeep = inflateResetKeep;
exports.inflateInit = inflateInit;
exports.inflateInit2 = inflateInit2;
exports.inflate = inflate;
exports.inflateEnd = inflateEnd;
exports.inflateGetHeader = inflateGetHeader;
exports.inflateSetDictionary = inflateSetDictionary;
exports.inflateInfo = 'pako inflate (from Nodeca project)';

/* Not implemented
exports.inflateCopy = inflateCopy;
exports.inflateGetDictionary = inflateGetDictionary;
exports.inflateMark = inflateMark;
exports.inflatePrime = inflatePrime;
exports.inflateSync = inflateSync;
exports.inflateSyncPoint = inflateSyncPoint;
exports.inflateUndermine = inflateUndermine;
*/

},{"../utils/common":140,"./adler32":141,"./crc32":143,"./inffast":145,"./inftrees":147}],147:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');

var MAXBITS = 15;
var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);

var CODES = 0;
var LENS = 1;
var DISTS = 2;

var lbase = [ /* Length codes 257..285 base */
  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
];

var lext = [ /* Length codes 257..285 extra */
  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
];

var dbase = [ /* Distance codes 0..29 base */
  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
  8193, 12289, 16385, 24577, 0, 0
];

var dext = [ /* Distance codes 0..29 extra */
  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
  28, 28, 29, 29, 64, 64
];

module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
{
  var bits = opts.bits;
      //here = opts.here; /* table entry for duplication */

  var len = 0;               /* a code's length in bits */
  var sym = 0;               /* index of code symbols */
  var min = 0, max = 0;          /* minimum and maximum code lengths */
  var root = 0;              /* number of index bits for root table */
  var curr = 0;              /* number of index bits for current table */
  var drop = 0;              /* code bits to drop for sub-table */
  var left = 0;                   /* number of prefix codes available */
  var used = 0;              /* code entries in table used */
  var huff = 0;              /* Huffman code */
  var incr;              /* for incrementing code, index */
  var fill;              /* index for replicating entries */
  var low;               /* low bits for current root entry */
  var mask;              /* mask for low root bits */
  var next;             /* next available space in table */
  var base = null;     /* base value table to use */
  var base_index = 0;
//  var shoextra;    /* extra bits table to use */
  var end;                    /* use base and extra for symbol > end */
  var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */
  var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */
  var extra = null;
  var extra_index = 0;

  var here_bits, here_op, here_val;

  /*
   Process a set of code lengths to create a canonical Huffman code.  The
   code lengths are lens[0..codes-1].  Each length corresponds to the
   symbols 0..codes-1.  The Huffman code is generated by first sorting the
   symbols by length from short to long, and retaining the symbol order
   for codes with equal lengths.  Then the code starts with all zero bits
   for the first code of the shortest length, and the codes are integer
   increments for the same length, and zeros are appended as the length
   increases.  For the deflate format, these bits are stored backwards
   from their more natural integer increment ordering, and so when the
   decoding tables are built in the large loop below, the integer codes
   are incremented backwards.

   This routine assumes, but does not check, that all of the entries in
   lens[] are in the range 0..MAXBITS.  The caller must assure this.
   1..MAXBITS is interpreted as that code length.  zero means that that
   symbol does not occur in this code.

   The codes are sorted by computing a count of codes for each length,
   creating from that a table of starting indices for each length in the
   sorted table, and then entering the symbols in order in the sorted
   table.  The sorted table is work[], with that space being provided by
   the caller.

   The length counts are used for other purposes as well, i.e. finding
   the minimum and maximum length codes, determining if there are any
   codes at all, checking for a valid set of lengths, and looking ahead
   at length counts to determine sub-table sizes when building the
   decoding tables.
   */

  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
  for (len = 0; len <= MAXBITS; len++) {
    count[len] = 0;
  }
  for (sym = 0; sym < codes; sym++) {
    count[lens[lens_index + sym]]++;
  }

  /* bound code lengths, force root to be within code lengths */
  root = bits;
  for (max = MAXBITS; max >= 1; max--) {
    if (count[max] !== 0) { break; }
  }
  if (root > max) {
    root = max;
  }
  if (max === 0) {                     /* no symbols to code at all */
    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;


    //table.op[opts.table_index] = 64;
    //table.bits[opts.table_index] = 1;
    //table.val[opts.table_index++] = 0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;

    opts.bits = 1;
    return 0;     /* no symbols, but wait for decoding to report error */
  }
  for (min = 1; min < max; min++) {
    if (count[min] !== 0) { break; }
  }
  if (root < min) {
    root = min;
  }

  /* check for an over-subscribed or incomplete set of lengths */
  left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= count[len];
    if (left < 0) {
      return -1;
    }        /* over-subscribed */
  }
  if (left > 0 && (type === CODES || max !== 1)) {
    return -1;                      /* incomplete set */
  }

  /* generate offsets into symbol table for each length for sorting */
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++) {
    offs[len + 1] = offs[len] + count[len];
  }

  /* sort symbols by length, by symbol order within each length */
  for (sym = 0; sym < codes; sym++) {
    if (lens[lens_index + sym] !== 0) {
      work[offs[lens[lens_index + sym]]++] = sym;
    }
  }

  /*
   Create and fill in decoding tables.  In this loop, the table being
   filled is at next and has curr index bits.  The code being used is huff
   with length len.  That code is converted to an index by dropping drop
   bits off of the bottom.  For codes where len is less than drop + curr,
   those top drop + curr - len bits are incremented through all values to
   fill the table with replicated entries.

   root is the number of index bits for the root table.  When len exceeds
   root, sub-tables are created pointed to by the root entry with an index
   of the low root bits of huff.  This is saved in low to check for when a
   new sub-table should be started.  drop is zero when the root table is
   being filled, and drop is root when sub-tables are being filled.

   When a new sub-table is needed, it is necessary to look ahead in the
   code lengths to determine what size sub-table is needed.  The length
   counts are used for this, and so count[] is decremented as codes are
   entered in the tables.

   used keeps track of how many table entries have been allocated from the
   provided *table space.  It is checked for LENS and DIST tables against
   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
   the initial root table size constants.  See the comments in inftrees.h
   for more information.

   sym increments through all symbols, and the loop terminates when
   all codes of length max, i.e. all codes, have been processed.  This
   routine permits incomplete codes, so another loop after this one fills
   in the rest of the decoding tables with invalid code markers.
   */

  /* set up for code type */
  // poor man optimization - use if-else instead of switch,
  // to avoid deopts in old v8
  if (type === CODES) {
    base = extra = work;    /* dummy value--not used */
    end = 19;

  } else if (type === LENS) {
    base = lbase;
    base_index -= 257;
    extra = lext;
    extra_index -= 257;
    end = 256;

  } else {                    /* DISTS */
    base = dbase;
    extra = dext;
    end = -1;
  }

  /* initialize opts for loop */
  huff = 0;                   /* starting code */
  sym = 0;                    /* starting code symbol */
  len = min;                  /* starting code length */
  next = table_index;              /* current table to fill in */
  curr = root;                /* current table index bits */
  drop = 0;                   /* current bits to drop from code for index */
  low = -1;                   /* trigger new sub-table when len > root */
  used = 1 << root;          /* use root table entries */
  mask = used - 1;            /* mask for comparing low */

  /* check available table space */
  if ((type === LENS && used > ENOUGH_LENS) ||
    (type === DISTS && used > ENOUGH_DISTS)) {
    return 1;
  }

  var i = 0;
  /* process all codes and make table entries */
  for (;;) {
    i++;
    /* create table entry */
    here_bits = len - drop;
    if (work[sym] < end) {
      here_op = 0;
      here_val = work[sym];
    }
    else if (work[sym] > end) {
      here_op = extra[extra_index + work[sym]];
      here_val = base[base_index + work[sym]];
    }
    else {
      here_op = 32 + 64;         /* end of block */
      here_val = 0;
    }

    /* replicate for those indices with low len bits equal to huff */
    incr = 1 << (len - drop);
    fill = 1 << curr;
    min = fill;                 /* save offset to next table */
    do {
      fill -= incr;
      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
    } while (fill !== 0);

    /* backwards increment the len-bit code huff */
    incr = 1 << (len - 1);
    while (huff & incr) {
      incr >>= 1;
    }
    if (incr !== 0) {
      huff &= incr - 1;
      huff += incr;
    } else {
      huff = 0;
    }

    /* go to next symbol, update count, len */
    sym++;
    if (--count[len] === 0) {
      if (len === max) { break; }
      len = lens[lens_index + work[sym]];
    }

    /* create new sub-table if needed */
    if (len > root && (huff & mask) !== low) {
      /* if first time, transition to sub-tables */
      if (drop === 0) {
        drop = root;
      }

      /* increment past last table */
      next += min;            /* here min is 1 << curr */

      /* determine length of next table */
      curr = len - drop;
      left = 1 << curr;
      while (curr + drop < max) {
        left -= count[curr + drop];
        if (left <= 0) { break; }
        curr++;
        left <<= 1;
      }

      /* check for enough space */
      used += 1 << curr;
      if ((type === LENS && used > ENOUGH_LENS) ||
        (type === DISTS && used > ENOUGH_DISTS)) {
        return 1;
      }

      /* point entry in root table to sub-table */
      low = huff & mask;
      /*table.op[low] = curr;
      table.bits[low] = root;
      table.val[low] = next - opts.table_index;*/
      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
    }
  }

  /* fill in remaining table entry if code is incomplete (guaranteed to have
   at most one remaining entry, since if the code is incomplete, the
   maximum code length that was allowed to get this far is one bit) */
  if (huff !== 0) {
    //table.op[next + huff] = 64;            /* invalid code marker */
    //table.bits[next + huff] = len - drop;
    //table.val[next + huff] = 0;
    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
  }

  /* set return parameters */
  //opts.table_index += used;
  opts.bits = root;
  return 0;
};

},{"../utils/common":140}],148:[function(require,module,exports){
'use strict';

module.exports = {
  2:      'need dictionary',     /* Z_NEED_DICT       2  */
  1:      'stream end',          /* Z_STREAM_END      1  */
  0:      '',                    /* Z_OK              0  */
  '-1':   'file error',          /* Z_ERRNO         (-1) */
  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
};

},{}],149:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');

/* Public constants ==========================================================*/
/* ===========================================================================*/


//var Z_FILTERED          = 1;
//var Z_HUFFMAN_ONLY      = 2;
//var Z_RLE               = 3;
var Z_FIXED               = 4;
//var Z_DEFAULT_STRATEGY  = 0;

/* Possible values of the data_type field (though see inflate()) */
var Z_BINARY              = 0;
var Z_TEXT                = 1;
//var Z_ASCII             = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;

/*============================================================================*/


function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }

// From zutil.h

var STORED_BLOCK = 0;
var STATIC_TREES = 1;
var DYN_TREES    = 2;
/* The three kinds of block type */

var MIN_MATCH    = 3;
var MAX_MATCH    = 258;
/* The minimum and maximum match lengths */

// From deflate.h
/* ===========================================================================
 * Internal compression state.
 */

var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */

var LITERALS      = 256;
/* number of literal bytes 0..255 */

var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */

var D_CODES       = 30;
/* number of distance codes */

var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */

var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */

var MAX_BITS      = 15;
/* All codes must not exceed MAX_BITS bits */

var Buf_size      = 16;
/* size of bit buffer in bi_buf */


/* ===========================================================================
 * Constants
 */

var MAX_BL_BITS = 7;
/* Bit length codes must not exceed MAX_BL_BITS bits */

var END_BLOCK   = 256;
/* end of block literal code */

var REP_3_6     = 16;
/* repeat previous bit length 3-6 times (2 bits of repeat count) */

var REPZ_3_10   = 17;
/* repeat a zero length 3-10 times  (3 bits of repeat count) */

var REPZ_11_138 = 18;
/* repeat a zero length 11-138 times  (7 bits of repeat count) */

/* eslint-disable comma-spacing,array-bracket-spacing */
var extra_lbits =   /* extra bits for each length code */
  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];

var extra_dbits =   /* extra bits for each distance code */
  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];

var extra_blbits =  /* extra bits for each bit length code */
  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];

var bl_order =
  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
/* eslint-enable comma-spacing,array-bracket-spacing */

/* The lengths of the bit length codes are sent in order of decreasing
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

/* ===========================================================================
 * Local data. These are initialized only once.
 */

// We pre-fill arrays with 0 to avoid uninitialized gaps

var DIST_CODE_LEN = 512; /* see definition of array dist_code below */

// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1
var static_ltree  = new Array((L_CODES + 2) * 2);
zero(static_ltree);
/* The static literal tree. Since the bit lengths are imposed, there is no
 * need for the L_CODES extra codes used during heap construction. However
 * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
 * below).
 */

var static_dtree  = new Array(D_CODES * 2);
zero(static_dtree);
/* The static distance tree. (Actually a trivial tree since all codes use
 * 5 bits.)
 */

var _dist_code    = new Array(DIST_CODE_LEN);
zero(_dist_code);
/* Distance codes. The first 256 values correspond to the distances
 * 3 .. 258, the last 256 values correspond to the top 8 bits of
 * the 15 bit distances.
 */

var _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);
zero(_length_code);
/* length code for each normalized match length (0 == MIN_MATCH) */

var base_length   = new Array(LENGTH_CODES);
zero(base_length);
/* First normalized length for each code (0 = MIN_MATCH) */

var base_dist     = new Array(D_CODES);
zero(base_dist);
/* First normalized distance for each code (0 = distance of 1) */


function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {

  this.static_tree  = static_tree;  /* static tree or NULL */
  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
  this.extra_base   = extra_base;   /* base index for extra_bits */
  this.elems        = elems;        /* max number of elements in the tree */
  this.max_length   = max_length;   /* max bit length for the codes */

  // show if `static_tree` has data or dummy - needed for monomorphic objects
  this.has_stree    = static_tree && static_tree.length;
}


var static_l_desc;
var static_d_desc;
var static_bl_desc;


function TreeDesc(dyn_tree, stat_desc) {
  this.dyn_tree = dyn_tree;     /* the dynamic tree */
  this.max_code = 0;            /* largest code with non zero frequency */
  this.stat_desc = stat_desc;   /* the corresponding static tree */
}



function d_code(dist) {
  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
}


/* ===========================================================================
 * Output a short LSB first on the stream.
 * IN assertion: there is enough room in pendingBuf.
 */
function put_short(s, w) {
//    put_byte(s, (uch)((w) & 0xff));
//    put_byte(s, (uch)((ush)(w) >> 8));
  s.pending_buf[s.pending++] = (w) & 0xff;
  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
}


/* ===========================================================================
 * Send a value on a given number of bits.
 * IN assertion: length <= 16 and value fits in length bits.
 */
function send_bits(s, value, length) {
  if (s.bi_valid > (Buf_size - length)) {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    put_short(s, s.bi_buf);
    s.bi_buf = value >> (Buf_size - s.bi_valid);
    s.bi_valid += length - Buf_size;
  } else {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    s.bi_valid += length;
  }
}


function send_code(s, c, tree) {
  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
}


/* ===========================================================================
 * Reverse the first len bits of a code, using straightforward code (a faster
 * method would use a table)
 * IN assertion: 1 <= len <= 15
 */
function bi_reverse(code, len) {
  var res = 0;
  do {
    res |= code & 1;
    code >>>= 1;
    res <<= 1;
  } while (--len > 0);
  return res >>> 1;
}


/* ===========================================================================
 * Flush the bit buffer, keeping at most 7 bits in it.
 */
function bi_flush(s) {
  if (s.bi_valid === 16) {
    put_short(s, s.bi_buf);
    s.bi_buf = 0;
    s.bi_valid = 0;

  } else if (s.bi_valid >= 8) {
    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
    s.bi_buf >>= 8;
    s.bi_valid -= 8;
  }
}


/* ===========================================================================
 * Compute the optimal bit lengths for a tree and update the total bit length
 * for the current block.
 * IN assertion: the fields freq and dad are set, heap[heap_max] and
 *    above are the tree nodes sorted by increasing frequency.
 * OUT assertions: the field len is set to the optimal bit length, the
 *     array bl_count contains the frequencies for each bit length.
 *     The length opt_len is updated; static_len is also updated if stree is
 *     not null.
 */
function gen_bitlen(s, desc)
//    deflate_state *s;
//    tree_desc *desc;    /* the tree descriptor */
{
  var tree            = desc.dyn_tree;
  var max_code        = desc.max_code;
  var stree           = desc.stat_desc.static_tree;
  var has_stree       = desc.stat_desc.has_stree;
  var extra           = desc.stat_desc.extra_bits;
  var base            = desc.stat_desc.extra_base;
  var max_length      = desc.stat_desc.max_length;
  var h;              /* heap index */
  var n, m;           /* iterate over the tree elements */
  var bits;           /* bit length */
  var xbits;          /* extra bits */
  var f;              /* frequency */
  var overflow = 0;   /* number of elements with bit length too large */

  for (bits = 0; bits <= MAX_BITS; bits++) {
    s.bl_count[bits] = 0;
  }

  /* In a first pass, compute the optimal bit lengths (which may
   * overflow in the case of the bit length tree).
   */
  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */

  for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {
    n = s.heap[h];
    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
    if (bits > max_length) {
      bits = max_length;
      overflow++;
    }
    tree[n * 2 + 1]/*.Len*/ = bits;
    /* We overwrite tree[n].Dad which is no longer needed */

    if (n > max_code) { continue; } /* not a leaf node */

    s.bl_count[bits]++;
    xbits = 0;
    if (n >= base) {
      xbits = extra[n - base];
    }
    f = tree[n * 2]/*.Freq*/;
    s.opt_len += f * (bits + xbits);
    if (has_stree) {
      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);
    }
  }
  if (overflow === 0) { return; }

  // Trace((stderr,"\nbit length overflow\n"));
  /* This happens for example on obj2 and pic of the Calgary corpus */

  /* Find the first bit length which could increase: */
  do {
    bits = max_length - 1;
    while (s.bl_count[bits] === 0) { bits--; }
    s.bl_count[bits]--;      /* move one leaf down the tree */
    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */
    s.bl_count[max_length]--;
    /* The brother of the overflow item also moves one step up,
     * but this does not affect bl_count[max_length]
     */
    overflow -= 2;
  } while (overflow > 0);

  /* Now recompute all bit lengths, scanning in increasing frequency.
   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
   * lengths instead of fixing only the wrong ones. This idea is taken
   * from 'ar' written by Haruhiko Okumura.)
   */
  for (bits = max_length; bits !== 0; bits--) {
    n = s.bl_count[bits];
    while (n !== 0) {
      m = s.heap[--h];
      if (m > max_code) { continue; }
      if (tree[m * 2 + 1]/*.Len*/ !== bits) {
        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;
        tree[m * 2 + 1]/*.Len*/ = bits;
      }
      n--;
    }
  }
}


/* ===========================================================================
 * Generate the codes for a given tree and bit counts (which need not be
 * optimal).
 * IN assertion: the array bl_count contains the bit length statistics for
 * the given tree and the field len is set for all tree elements.
 * OUT assertion: the field code is set for all tree elements of non
 *     zero code length.
 */
function gen_codes(tree, max_code, bl_count)
//    ct_data *tree;             /* the tree to decorate */
//    int max_code;              /* largest code with non zero frequency */
//    ushf *bl_count;            /* number of codes at each bit length */
{
  var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */
  var code = 0;              /* running code value */
  var bits;                  /* bit index */
  var n;                     /* code index */

  /* The distribution counts are first used to generate the code values
   * without bit reversal.
   */
  for (bits = 1; bits <= MAX_BITS; bits++) {
    next_code[bits] = code = (code + bl_count[bits - 1]) << 1;
  }
  /* Check that the bit counts in bl_count are consistent. The last code
   * must be all ones.
   */
  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
  //        "inconsistent bit counts");
  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));

  for (n = 0;  n <= max_code; n++) {
    var len = tree[n * 2 + 1]/*.Len*/;
    if (len === 0) { continue; }
    /* Now reverse the bits */
    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);

    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
  }
}


/* ===========================================================================
 * Initialize the various 'constant' tables.
 */
function tr_static_init() {
  var n;        /* iterates over tree elements */
  var bits;     /* bit counter */
  var length;   /* length value */
  var code;     /* code value */
  var dist;     /* distance index */
  var bl_count = new Array(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  // do check in _tr_init()
  //if (static_init_done) return;

  /* For some embedded targets, global variables are not initialized: */
/*#ifdef NO_INIT_GLOBAL_POINTERS
  static_l_desc.static_tree = static_ltree;
  static_l_desc.extra_bits = extra_lbits;
  static_d_desc.static_tree = static_dtree;
  static_d_desc.extra_bits = extra_dbits;
  static_bl_desc.extra_bits = extra_blbits;
#endif*/

  /* Initialize the mapping length (0..255) -> length code (0..28) */
  length = 0;
  for (code = 0; code < LENGTH_CODES - 1; code++) {
    base_length[code] = length;
    for (n = 0; n < (1 << extra_lbits[code]); n++) {
      _length_code[length++] = code;
    }
  }
  //Assert (length == 256, "tr_static_init: length != 256");
  /* Note that the length 255 (match length 258) can be represented
   * in two different ways: code 284 + 5 bits or code 285, so we
   * overwrite length_code[255] to use the best encoding:
   */
  _length_code[length - 1] = code;

  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
  dist = 0;
  for (code = 0; code < 16; code++) {
    base_dist[code] = dist;
    for (n = 0; n < (1 << extra_dbits[code]); n++) {
      _dist_code[dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: dist != 256");
  dist >>= 7; /* from now on, all distances are divided by 128 */
  for (; code < D_CODES; code++) {
    base_dist[code] = dist << 7;
    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
      _dist_code[256 + dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: 256+dist != 512");

  /* Construct the codes of the static literal tree */
  for (bits = 0; bits <= MAX_BITS; bits++) {
    bl_count[bits] = 0;
  }

  n = 0;
  while (n <= 143) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  while (n <= 255) {
    static_ltree[n * 2 + 1]/*.Len*/ = 9;
    n++;
    bl_count[9]++;
  }
  while (n <= 279) {
    static_ltree[n * 2 + 1]/*.Len*/ = 7;
    n++;
    bl_count[7]++;
  }
  while (n <= 287) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  /* Codes 286 and 287 do not exist, but we must include them in the
   * tree construction to get a canonical Huffman tree (longest code
   * all ones)
   */
  gen_codes(static_ltree, L_CODES + 1, bl_count);

  /* The static distance tree is trivial: */
  for (n = 0; n < D_CODES; n++) {
    static_dtree[n * 2 + 1]/*.Len*/ = 5;
    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);
  }

  // Now data ready and we can init static trees
  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS);
  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);

  //static_init_done = true;
}


/* ===========================================================================
 * Initialize a new block.
 */
function init_block(s) {
  var n; /* iterates over tree elements */

  /* Initialize the trees. */
  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }

  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;
  s.opt_len = s.static_len = 0;
  s.last_lit = s.matches = 0;
}


/* ===========================================================================
 * Flush the bit buffer and align the output on a byte boundary
 */
function bi_windup(s)
{
  if (s.bi_valid > 8) {
    put_short(s, s.bi_buf);
  } else if (s.bi_valid > 0) {
    //put_byte(s, (Byte)s->bi_buf);
    s.pending_buf[s.pending++] = s.bi_buf;
  }
  s.bi_buf = 0;
  s.bi_valid = 0;
}

/* ===========================================================================
 * Copy a stored block, storing first the length and its
 * one's complement if requested.
 */
function copy_block(s, buf, len, header)
//DeflateState *s;
//charf    *buf;    /* the input data */
//unsigned len;     /* its length */
//int      header;  /* true if block header must be written */
{
  bi_windup(s);        /* align on byte boundary */

  if (header) {
    put_short(s, len);
    put_short(s, ~len);
  }
//  while (len--) {
//    put_byte(s, *buf++);
//  }
  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
  s.pending += len;
}

/* ===========================================================================
 * Compares to subtrees, using the tree depth as tie breaker when
 * the subtrees have equal frequency. This minimizes the worst case length.
 */
function smaller(tree, n, m, depth) {
  var _n2 = n * 2;
  var _m2 = m * 2;
  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
}

/* ===========================================================================
 * Restore the heap property by moving down the tree starting at node k,
 * exchanging a node with the smallest of its two sons if necessary, stopping
 * when the heap property is re-established (each father smaller than its
 * two sons).
 */
function pqdownheap(s, tree, k)
//    deflate_state *s;
//    ct_data *tree;  /* the tree to restore */
//    int k;               /* node to move down */
{
  var v = s.heap[k];
  var j = k << 1;  /* left son of k */
  while (j <= s.heap_len) {
    /* Set j to the smallest of the two sons: */
    if (j < s.heap_len &&
      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {
      j++;
    }
    /* Exit if v is smaller than both sons */
    if (smaller(tree, v, s.heap[j], s.depth)) { break; }

    /* Exchange v with the smallest son */
    s.heap[k] = s.heap[j];
    k = j;

    /* And continue down the tree, setting j to the left son of k */
    j <<= 1;
  }
  s.heap[k] = v;
}


// inlined manually
// var SMALLEST = 1;

/* ===========================================================================
 * Send the block data compressed using the given Huffman trees
 */
function compress_block(s, ltree, dtree)
//    deflate_state *s;
//    const ct_data *ltree; /* literal tree */
//    const ct_data *dtree; /* distance tree */
{
  var dist;           /* distance of matched string */
  var lc;             /* match length or unmatched char (if dist == 0) */
  var lx = 0;         /* running index in l_buf */
  var code;           /* the code to send */
  var extra;          /* number of extra bits to send */

  if (s.last_lit !== 0) {
    do {
      dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]);
      lc = s.pending_buf[s.l_buf + lx];
      lx++;

      if (dist === 0) {
        send_code(s, lc, ltree); /* send a literal byte */
        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
      } else {
        /* Here, lc is the match length - MIN_MATCH */
        code = _length_code[lc];
        send_code(s, code + LITERALS + 1, ltree); /* send the length code */
        extra = extra_lbits[code];
        if (extra !== 0) {
          lc -= base_length[code];
          send_bits(s, lc, extra);       /* send the extra length bits */
        }
        dist--; /* dist is now the match distance - 1 */
        code = d_code(dist);
        //Assert (code < D_CODES, "bad d_code");

        send_code(s, code, dtree);       /* send the distance code */
        extra = extra_dbits[code];
        if (extra !== 0) {
          dist -= base_dist[code];
          send_bits(s, dist, extra);   /* send the extra distance bits */
        }
      } /* literal or match pair ? */

      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
      //       "pendingBuf overflow");

    } while (lx < s.last_lit);
  }

  send_code(s, END_BLOCK, ltree);
}


/* ===========================================================================
 * Construct one Huffman tree and assigns the code bit strings and lengths.
 * Update the total bit length for the current block.
 * IN assertion: the field freq is set for all tree elements.
 * OUT assertions: the fields len and code are set to the optimal bit length
 *     and corresponding code. The length opt_len is updated; static_len is
 *     also updated if stree is not null. The field max_code is set.
 */
function build_tree(s, desc)
//    deflate_state *s;
//    tree_desc *desc; /* the tree descriptor */
{
  var tree     = desc.dyn_tree;
  var stree    = desc.stat_desc.static_tree;
  var has_stree = desc.stat_desc.has_stree;
  var elems    = desc.stat_desc.elems;
  var n, m;          /* iterate over heap elements */
  var max_code = -1; /* largest code with non zero frequency */
  var node;          /* new node being created */

  /* Construct the initial heap, with least frequent element in
   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
   * heap[0] is not used.
   */
  s.heap_len = 0;
  s.heap_max = HEAP_SIZE;

  for (n = 0; n < elems; n++) {
    if (tree[n * 2]/*.Freq*/ !== 0) {
      s.heap[++s.heap_len] = max_code = n;
      s.depth[n] = 0;

    } else {
      tree[n * 2 + 1]/*.Len*/ = 0;
    }
  }

  /* The pkzip format requires that at least one distance code exists,
   * and that at least one bit should be sent even if there is only one
   * possible code. So to avoid special checks later on we force at least
   * two codes of non zero frequency.
   */
  while (s.heap_len < 2) {
    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
    tree[node * 2]/*.Freq*/ = 1;
    s.depth[node] = 0;
    s.opt_len--;

    if (has_stree) {
      s.static_len -= stree[node * 2 + 1]/*.Len*/;
    }
    /* node is 0 or 1 so it does not have extra bits */
  }
  desc.max_code = max_code;

  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
   * establish sub-heaps of increasing lengths:
   */
  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }

  /* Construct the Huffman tree by repeatedly combining the least two
   * frequent nodes.
   */
  node = elems;              /* next internal node of the tree */
  do {
    //pqremove(s, tree, n);  /* n = node of least frequency */
    /*** pqremove ***/
    n = s.heap[1/*SMALLEST*/];
    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
    pqdownheap(s, tree, 1/*SMALLEST*/);
    /***/

    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */

    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
    s.heap[--s.heap_max] = m;

    /* Create a new node father of n and m */
    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;

    /* and insert the new node in the heap */
    s.heap[1/*SMALLEST*/] = node++;
    pqdownheap(s, tree, 1/*SMALLEST*/);

  } while (s.heap_len >= 2);

  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];

  /* At this point, the fields freq and dad are set. We can now
   * generate the bit lengths.
   */
  gen_bitlen(s, desc);

  /* The field len is now set, we can generate the bit codes */
  gen_codes(tree, max_code, s.bl_count);
}


/* ===========================================================================
 * Scan a literal or distance tree to determine the frequencies of the codes
 * in the bit length tree.
 */
function scan_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree;   /* the tree to be scanned */
//    int max_code;    /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }
  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      s.bl_tree[curlen * 2]/*.Freq*/ += count;

    } else if (curlen !== 0) {

      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;

    } else if (count <= 10) {
      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;

    } else {
      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;
    }

    count = 0;
    prevlen = curlen;

    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Send a literal or distance tree in compressed form, using the codes in
 * bl_tree.
 */
function send_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree; /* the tree to be scanned */
//    int max_code;       /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  /* tree[max_code+1].Len = -1; */  /* guard already set */
  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);

    } else if (curlen !== 0) {
      if (curlen !== prevlen) {
        send_code(s, curlen, s.bl_tree);
        count--;
      }
      //Assert(count >= 3 && count <= 6, " 3_6?");
      send_code(s, REP_3_6, s.bl_tree);
      send_bits(s, count - 3, 2);

    } else if (count <= 10) {
      send_code(s, REPZ_3_10, s.bl_tree);
      send_bits(s, count - 3, 3);

    } else {
      send_code(s, REPZ_11_138, s.bl_tree);
      send_bits(s, count - 11, 7);
    }

    count = 0;
    prevlen = curlen;
    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Construct the Huffman tree for the bit lengths and return the index in
 * bl_order of the last bit length code to send.
 */
function build_bl_tree(s) {
  var max_blindex;  /* index of last bit length code of non zero freq */

  /* Determine the bit length frequencies for literal and distance trees */
  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);

  /* Build the bit length tree: */
  build_tree(s, s.bl_desc);
  /* opt_len now includes the length of the tree representations, except
   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
   */

  /* Determine the number of bit length codes to send. The pkzip format
   * requires that at least 4 bit length codes be sent. (appnote.txt says
   * 3 but the actual value used is 4.)
   */
  for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {
    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {
      break;
    }
  }
  /* Update opt_len to include the bit length tree and counts */
  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
  //        s->opt_len, s->static_len));

  return max_blindex;
}


/* ===========================================================================
 * Send the header for a block using dynamic Huffman trees: the counts, the
 * lengths of the bit length codes, the literal tree and the distance tree.
 * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
 */
function send_all_trees(s, lcodes, dcodes, blcodes)
//    deflate_state *s;
//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
{
  var rank;                    /* index in bl_order */

  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
  //        "too many codes");
  //Tracev((stderr, "\nbl counts: "));
  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
  send_bits(s, dcodes - 1,   5);
  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */
  for (rank = 0; rank < blcodes; rank++) {
    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);
  }
  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */
  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */
  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}


/* ===========================================================================
 * Check if the data type is TEXT or BINARY, using the following algorithm:
 * - TEXT if the two conditions below are satisfied:
 *    a) There are no non-portable control characters belonging to the
 *       "black list" (0..6, 14..25, 28..31).
 *    b) There is at least one printable character belonging to the
 *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
 * - BINARY otherwise.
 * - The following partially-portable control characters form a
 *   "gray list" that is ignored in this detection algorithm:
 *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
 * IN assertion: the fields Freq of dyn_ltree are set.
 */
function detect_data_type(s) {
  /* black_mask is the bit mask of black-listed bytes
   * set bits 0..6, 14..25, and 28..31
   * 0xf3ffc07f = binary 11110011111111111100000001111111
   */
  var black_mask = 0xf3ffc07f;
  var n;

  /* Check for non-textual ("black-listed") bytes. */
  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
    if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {
      return Z_BINARY;
    }
  }

  /* Check for textual ("white-listed") bytes. */
  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
    return Z_TEXT;
  }
  for (n = 32; n < LITERALS; n++) {
    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
      return Z_TEXT;
    }
  }

  /* There are no "black-listed" or "white-listed" bytes:
   * this stream either is empty or has tolerated ("gray-listed") bytes only.
   */
  return Z_BINARY;
}


var static_init_done = false;

/* ===========================================================================
 * Initialize the tree data structures for a new zlib stream.
 */
function _tr_init(s)
{

  if (!static_init_done) {
    tr_static_init();
    static_init_done = true;
  }

  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);

  s.bi_buf = 0;
  s.bi_valid = 0;

  /* Initialize the first block of the first file: */
  init_block(s);
}


/* ===========================================================================
 * Send a stored block
 */
function _tr_stored_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */
  copy_block(s, buf, stored_len, true); /* with header */
}


/* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
 */
function _tr_align(s) {
  send_bits(s, STATIC_TREES << 1, 3);
  send_code(s, END_BLOCK, static_ltree);
  bi_flush(s);
}


/* ===========================================================================
 * Determine the best encoding for the current block: dynamic trees, static
 * trees or store, and output the encoded block to the zip file.
 */
function _tr_flush_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block, or NULL if too old */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
  var max_blindex = 0;        /* index of last bit length code of non zero freq */

  /* Build the Huffman trees unless a stored block is forced */
  if (s.level > 0) {

    /* Check if the file is binary or text */
    if (s.strm.data_type === Z_UNKNOWN) {
      s.strm.data_type = detect_data_type(s);
    }

    /* Construct the literal and distance trees */
    build_tree(s, s.l_desc);
    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));

    build_tree(s, s.d_desc);
    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));
    /* At this point, opt_len and static_len are the total bit lengths of
     * the compressed block data, excluding the tree representations.
     */

    /* Build the bit length tree for the above two trees, and get the index
     * in bl_order of the last bit length code to send.
     */
    max_blindex = build_bl_tree(s);

    /* Determine the best encoding. Compute the block lengths in bytes. */
    opt_lenb = (s.opt_len + 3 + 7) >>> 3;
    static_lenb = (s.static_len + 3 + 7) >>> 3;

    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
    //        s->last_lit));

    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }

  } else {
    // Assert(buf != (char*)0, "lost buf");
    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
  }

  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {
    /* 4: two words for the lengths */

    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
     * Otherwise we can't have processed more than WSIZE input bytes since
     * the last block flush, because compression would have been
     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
     * transform a block into a stored block.
     */
    _tr_stored_block(s, buf, stored_len, last);

  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {

    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);
    compress_block(s, static_ltree, static_dtree);

  } else {
    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);
    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);
    compress_block(s, s.dyn_ltree, s.dyn_dtree);
  }
  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
  /* The above check is made mod 2^32, for files larger than 512 MB
   * and uLong implemented on 32 bits.
   */
  init_block(s);

  if (last) {
    bi_windup(s);
  }
  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
  //       s->compressed_len-7*last));
}

/* ===========================================================================
 * Save the match info and tally the frequency counts. Return true if
 * the current block must be flushed.
 */
function _tr_tally(s, dist, lc)
//    deflate_state *s;
//    unsigned dist;  /* distance of matched string */
//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
{
  //var out_length, in_length, dcode;

  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;

  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
  s.last_lit++;

  if (dist === 0) {
    /* lc is the unmatched char */
    s.dyn_ltree[lc * 2]/*.Freq*/++;
  } else {
    s.matches++;
    /* Here, lc is the match length - MIN_MATCH */
    dist--;             /* dist = match distance - 1 */
    //Assert((ush)dist < (ush)MAX_DIST(s) &&
    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");

    s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++;
    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
  }

// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility

//#ifdef TRUNCATE_BLOCK
//  /* Try to guess if it is profitable to stop the current block here */
//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
//    /* Compute an upper bound for the compressed length */
//    out_length = s.last_lit*8;
//    in_length = s.strstart - s.block_start;
//
//    for (dcode = 0; dcode < D_CODES; dcode++) {
//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
//    }
//    out_length >>>= 3;
//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
//    //       s->last_lit, in_length, out_length,
//    //       100L - out_length*100L/in_length));
//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
//      return true;
//    }
//  }
//#endif

  return (s.last_lit === s.lit_bufsize - 1);
  /* We avoid equality with lit_bufsize because of wraparound at 64K
   * on 16 bit machines and because stored blocks are restricted to
   * 64K-1 bytes.
   */
}

exports._tr_init  = _tr_init;
exports._tr_stored_block = _tr_stored_block;
exports._tr_flush_block  = _tr_flush_block;
exports._tr_tally = _tr_tally;
exports._tr_align = _tr_align;

},{"../utils/common":140}],150:[function(require,module,exports){
'use strict';


function ZStream() {
  /* next input byte */
  this.input = null; // JS specific, because we have no pointers
  this.next_in = 0;
  /* number of bytes available at input */
  this.avail_in = 0;
  /* total number of input bytes read so far */
  this.total_in = 0;
  /* next output byte should be put there */
  this.output = null; // JS specific, because we have no pointers
  this.next_out = 0;
  /* remaining free space at output */
  this.avail_out = 0;
  /* total number of bytes output so far */
  this.total_out = 0;
  /* last error message, NULL if no error */
  this.msg = ''/*Z_NULL*/;
  /* not visible by applications */
  this.state = null;
  /* best guess about the data type: binary or text */
  this.data_type = 2/*Z_UNKNOWN*/;
  /* adler32 value of the uncompressed data */
  this.adler = 0;
}

module.exports = ZStream;

},{}],151:[function(require,module,exports){
(function (process){(function (){
'use strict';

if (typeof process === 'undefined' ||
    !process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = { nextTick: nextTick };
} else {
  module.exports = process
}

function nextTick(fn, arg1, arg2, arg3) {
  if (typeof fn !== 'function') {
    throw new TypeError('"callback" argument must be a function');
  }
  var len = arguments.length;
  var args, i;
  switch (len) {
  case 0:
  case 1:
    return process.nextTick(fn);
  case 2:
    return process.nextTick(function afterTickOne() {
      fn.call(null, arg1);
    });
  case 3:
    return process.nextTick(function afterTickTwo() {
      fn.call(null, arg1, arg2);
    });
  case 4:
    return process.nextTick(function afterTickThree() {
      fn.call(null, arg1, arg2, arg3);
    });
  default:
    args = new Array(len - 1);
    i = 0;
    while (i < args.length) {
      args[i++] = arguments[i];
    }
    return process.nextTick(function afterTick() {
      fn.apply(null, args);
    });
  }
}


}).call(this)}).call(this,require('_process'))
},{"_process":152}],152:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],153:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

module.exports = function(qs, sep, eq, options) {
  sep = sep || '&';
  eq = eq || '=';
  var obj = {};

  if (typeof qs !== 'string' || qs.length === 0) {
    return obj;
  }

  var regexp = /\+/g;
  qs = qs.split(sep);

  var maxKeys = 1000;
  if (options && typeof options.maxKeys === 'number') {
    maxKeys = options.maxKeys;
  }

  var len = qs.length;
  // maxKeys <= 0 means that we should not limit keys count
  if (maxKeys > 0 && len > maxKeys) {
    len = maxKeys;
  }

  for (var i = 0; i < len; ++i) {
    var x = qs[i].replace(regexp, '%20'),
        idx = x.indexOf(eq),
        kstr, vstr, k, v;

    if (idx >= 0) {
      kstr = x.substr(0, idx);
      vstr = x.substr(idx + 1);
    } else {
      kstr = x;
      vstr = '';
    }

    k = decodeURIComponent(kstr);
    v = decodeURIComponent(vstr);

    if (!hasOwnProperty(obj, k)) {
      obj[k] = v;
    } else if (isArray(obj[k])) {
      obj[k].push(v);
    } else {
      obj[k] = [obj[k], v];
    }
  }

  return obj;
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

},{}],154:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var stringifyPrimitive = function(v) {
  switch (typeof v) {
    case 'string':
      return v;

    case 'boolean':
      return v ? 'true' : 'false';

    case 'number':
      return isFinite(v) ? v : '';

    default:
      return '';
  }
};

module.exports = function(obj, sep, eq, name) {
  sep = sep || '&';
  eq = eq || '=';
  if (obj === null) {
    obj = undefined;
  }

  if (typeof obj === 'object') {
    return map(objectKeys(obj), function(k) {
      var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
      if (isArray(obj[k])) {
        return map(obj[k], function(v) {
          return ks + encodeURIComponent(stringifyPrimitive(v));
        }).join(sep);
      } else {
        return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
      }
    }).join(sep);

  }

  if (!name) return '';
  return encodeURIComponent(stringifyPrimitive(name)) + eq +
         encodeURIComponent(stringifyPrimitive(obj));
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

function map (xs, f) {
  if (xs.map) return xs.map(f);
  var res = [];
  for (var i = 0; i < xs.length; i++) {
    res.push(f(xs[i], i));
  }
  return res;
}

var objectKeys = Object.keys || function (obj) {
  var res = [];
  for (var key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key);
  }
  return res;
};

},{}],155:[function(require,module,exports){
'use strict';

exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');

},{"./decode":153,"./encode":154}],156:[function(require,module,exports){
'use strict';

function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }

var codes = {};

function createErrorType(code, message, Base) {
  if (!Base) {
    Base = Error;
  }

  function getMessage(arg1, arg2, arg3) {
    if (typeof message === 'string') {
      return message;
    } else {
      return message(arg1, arg2, arg3);
    }
  }

  var NodeError =
  /*#__PURE__*/
  function (_Base) {
    _inheritsLoose(NodeError, _Base);

    function NodeError(arg1, arg2, arg3) {
      return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
    }

    return NodeError;
  }(Base);

  NodeError.prototype.name = Base.name;
  NodeError.prototype.code = code;
  codes[code] = NodeError;
} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js


function oneOf(expected, thing) {
  if (Array.isArray(expected)) {
    var len = expected.length;
    expected = expected.map(function (i) {
      return String(i);
    });

    if (len > 2) {
      return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
    } else if (len === 2) {
      return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
    } else {
      return "of ".concat(thing, " ").concat(expected[0]);
    }
  } else {
    return "of ".concat(thing, " ").concat(String(expected));
  }
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith


function startsWith(str, search, pos) {
  return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith


function endsWith(str, search, this_len) {
  if (this_len === undefined || this_len > str.length) {
    this_len = str.length;
  }

  return str.substring(this_len - search.length, this_len) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes


function includes(str, search, start) {
  if (typeof start !== 'number') {
    start = 0;
  }

  if (start + search.length > str.length) {
    return false;
  } else {
    return str.indexOf(search, start) !== -1;
  }
}

createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
  return 'The value "' + value + '" is invalid for option "' + name + '"';
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
  // determiner: 'must be' or 'must not be'
  var determiner;

  if (typeof expected === 'string' && startsWith(expected, 'not ')) {
    determiner = 'must not be';
    expected = expected.replace(/^not /, '');
  } else {
    determiner = 'must be';
  }

  var msg;

  if (endsWith(name, ' argument')) {
    // For cases like 'first argument'
    msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
  } else {
    var type = includes(name, '.') ? 'property' : 'argument';
    msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
  }

  msg += ". Received type ".concat(typeof actual);
  return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
  return 'The ' + name + ' method is not implemented';
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
  return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
  return 'Unknown encoding: ' + arg;
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;

},{}],157:[function(require,module,exports){
(function (process){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/*<replacement>*/

var objectKeys = Object.keys || function (obj) {
  var keys = [];

  for (var key in obj) {
    keys.push(key);
  }

  return keys;
};
/*</replacement>*/


module.exports = Duplex;

var Readable = require('./_stream_readable');

var Writable = require('./_stream_writable');

require('inherits')(Duplex, Readable);

{
  // Allow the keys array to be GC'ed.
  var keys = objectKeys(Writable.prototype);

  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);
  Readable.call(this, options);
  Writable.call(this, options);
  this.allowHalfOpen = true;

  if (options) {
    if (options.readable === false) this.readable = false;
    if (options.writable === false) this.writable = false;

    if (options.allowHalfOpen === false) {
      this.allowHalfOpen = false;
      this.once('end', onend);
    }
  }
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.highWaterMark;
  }
});
Object.defineProperty(Duplex.prototype, 'writableBuffer', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState && this._writableState.getBuffer();
  }
});
Object.defineProperty(Duplex.prototype, 'writableLength', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.length;
  }
}); // the no-half-open enforcer

function onend() {
  // If the writable side ended, then we're ok.
  if (this._writableState.ended) return; // no more data can be written.
  // But allow more writes to happen in this tick.

  process.nextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }

    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function set(value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    } // backward compatibility, the user is explicitly
    // managing destroyed


    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});
}).call(this)}).call(this,require('_process'))
},{"./_stream_readable":159,"./_stream_writable":161,"_process":152,"inherits":85}],158:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

require('inherits')(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);
  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":160,"inherits":85}],159:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';

module.exports = Readable;
/*<replacement>*/

var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;
/*<replacement>*/

var EE = require('events').EventEmitter;

var EElistenerCount = function EElistenerCount(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/


var Stream = require('./internal/streams/stream');
/*</replacement>*/


var Buffer = require('buffer').Buffer;

var OurUint8Array = global.Uint8Array || function () {};

function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}

function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*<replacement>*/


var debugUtil = require('util');

var debug;

if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function debug() {};
}
/*</replacement>*/


var BufferList = require('./internal/streams/buffer_list');

var destroyImpl = require('./internal/streams/destroy');

var _require = require('./internal/streams/state'),
    getHighWaterMark = _require.getHighWaterMark;

var _require$codes = require('../errors').codes,
    ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
    ERR_STREAM_PUSH_AFTER_EOF = _require$codes.ERR_STREAM_PUSH_AFTER_EOF,
    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
    ERR_STREAM_UNSHIFT_AFTER_END_EVENT = _require$codes.ERR_STREAM_UNSHIFT_AFTER_END_EVENT; // Lazy loaded to improve the startup performance.


var StringDecoder;
var createReadableStreamAsyncIterator;
var from;

require('inherits')(Readable, Stream);

var errorOrDestroy = destroyImpl.errorOrDestroy;
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.

  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (Array.isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream, isDuplex) {
  Duplex = Duplex || require('./_stream_duplex');
  options = options || {}; // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.

  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away

  this.objectMode = !!options.objectMode;
  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"

  this.highWaterMark = getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex); // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()

  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false; // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.

  this.sync = true; // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.

  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;
  this.paused = true; // Should close be emitted on destroy. Defaults to true.

  this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'end' (and potentially 'finish')

  this.autoDestroy = !!options.autoDestroy; // has it been destroyed

  this.destroyed = false; // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.

  this.defaultEncoding = options.defaultEncoding || 'utf8'; // the number of writers that are awaiting a drain event in .pipe()s

  this.awaitDrain = 0; // if true, a maybeReadMore has been scheduled

  this.readingMore = false;
  this.decoder = null;
  this.encoding = null;

  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');
  if (!(this instanceof Readable)) return new Readable(options); // Checking for a Stream.Duplex instance is faster here instead of inside
  // the ReadableState constructor, at least with V8 6.5

  var isDuplex = this instanceof Duplex;
  this._readableState = new ReadableState(options, this, isDuplex); // legacy

  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;
    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    if (this._readableState === undefined) {
      return false;
    }

    return this._readableState.destroyed;
  },
  set: function set(value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    } // backward compatibility, the user is explicitly
    // managing destroyed


    this._readableState.destroyed = value;
  }
});
Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;

Readable.prototype._destroy = function (err, cb) {
  cb(err);
}; // Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.


Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;

      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }

      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
}; // Unshift should *always* be something directly out of read()


Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  debug('readableAddChunk', chunk);
  var state = stream._readableState;

  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);

    if (er) {
      errorOrDestroy(stream, er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) errorOrDestroy(stream, new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        errorOrDestroy(stream, new ERR_STREAM_PUSH_AFTER_EOF());
      } else if (state.destroyed) {
        return false;
      } else {
        state.reading = false;

        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
      maybeReadMore(stream, state);
    }
  } // We can push more data if we are below the highWaterMark.
  // Also, if we have no data yet, we can stand some more bytes.
  // This is to work around cases where hwm=0, such as the repl.


  return !state.ended && (state.length < state.highWaterMark || state.length === 0);
}

function addChunk(stream, state, chunk, addToFront) {
  if (state.flowing && state.length === 0 && !state.sync) {
    state.awaitDrain = 0;
    stream.emit('data', chunk);
  } else {
    // update the buffer info.
    state.length += state.objectMode ? 1 : chunk.length;
    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
    if (state.needReadable) emitReadable(stream);
  }

  maybeReadMore(stream, state);
}

function chunkInvalid(state, chunk) {
  var er;

  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk);
  }

  return er;
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
}; // backwards compatibility.


Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  var decoder = new StringDecoder(enc);
  this._readableState.decoder = decoder; // If setEncoding(null), decoder.encoding equals utf8

  this._readableState.encoding = this._readableState.decoder.encoding; // Iterate over current buffer to convert already stored Buffers:

  var p = this._readableState.buffer.head;
  var content = '';

  while (p !== null) {
    content += decoder.write(p.data);
    p = p.next;
  }

  this._readableState.buffer.clear();

  if (content !== '') this._readableState.buffer.push(content);
  this._readableState.length = content.length;
  return this;
}; // Don't raise the hwm > 1GB


var MAX_HWM = 0x40000000;

function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    // TODO(ronag): Throw ERR_VALUE_OUT_OF_RANGE.
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }

  return n;
} // This function is designed to be inlinable, so please take care when making
// changes to the function body.


function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;

  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  } // If we're asking for more than the current hwm, then raise the hwm.


  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n; // Don't have enough

  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }

  return state.length;
} // you can override either this method, or the async _read(n) below.


Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;
  if (n !== 0) state.emittedReadable = false; // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.

  if (n === 0 && state.needReadable && ((state.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state); // if we've ended, and we're now clear, then finish it up.

  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  } // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.
  // if we need a readable event, then we need to do some reading.


  var doRead = state.needReadable;
  debug('need readable', doRead); // if we currently have less than the highWaterMark, then also read some

  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  } // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.


  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true; // if the length is currently zero, then we *need* a readable event.

    if (state.length === 0) state.needReadable = true; // call internal read method

    this._read(state.highWaterMark);

    state.sync = false; // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.

    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = state.length <= state.highWaterMark;
    n = 0;
  } else {
    state.length -= n;
    state.awaitDrain = 0;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true; // If we tried to read() past the EOF, then emit end on the next tick.

    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);
  return ret;
};

function onEofChunk(stream, state) {
  debug('onEofChunk');
  if (state.ended) return;

  if (state.decoder) {
    var chunk = state.decoder.end();

    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }

  state.ended = true;

  if (state.sync) {
    // if we are sync, wait until next tick to emit the data.
    // Otherwise we risk emitting data in the flow()
    // the readable code triggers during a read() call
    emitReadable(stream);
  } else {
    // emit 'readable' now to make sure it gets picked up.
    state.needReadable = false;

    if (!state.emittedReadable) {
      state.emittedReadable = true;
      emitReadable_(stream);
    }
  }
} // Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.


function emitReadable(stream) {
  var state = stream._readableState;
  debug('emitReadable', state.needReadable, state.emittedReadable);
  state.needReadable = false;

  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    process.nextTick(emitReadable_, stream);
  }
}

function emitReadable_(stream) {
  var state = stream._readableState;
  debug('emitReadable_', state.destroyed, state.length, state.ended);

  if (!state.destroyed && (state.length || state.ended)) {
    stream.emit('readable');
    state.emittedReadable = false;
  } // The stream needs another readable event if
  // 1. It is not flowing, as the flow mechanism will take
  //    care of it.
  // 2. It is not ended.
  // 3. It is below the highWaterMark, so we can schedule
  //    another readable later.


  state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark;
  flow(stream);
} // at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.


function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  // Attempt to read more data if we should.
  //
  // The conditions for reading more data are (one of):
  // - Not enough data buffered (state.length < state.highWaterMark). The loop
  //   is responsible for filling the buffer with enough data if such data
  //   is available. If highWaterMark is 0 and we are not in the flowing mode
  //   we should _not_ attempt to buffer any extra data. We'll get more data
  //   when the stream consumer calls read() instead.
  // - No data in the buffer, and the stream is in flowing mode. In this mode
  //   the loop below is responsible for ensuring read() is called. Failing to
  //   call read here would abort the flow and there's no other mechanism for
  //   continuing the flow if the stream consumer has just subscribed to the
  //   'data' event.
  //
  // In addition to the above conditions to keep reading data, the following
  // conditions prevent the data from being read:
  // - The stream has ended (state.ended).
  // - There is already a pending 'read' operation (state.reading). This is a
  //   case where the the stream has called the implementation defined _read()
  //   method, but they are processing the call asynchronously and have _not_
  //   called push() with new data. In this case we skip performing more
  //   read()s. The execution ends in this method again after the _read() ends
  //   up calling push() with more data.
  while (!state.reading && !state.ended && (state.length < state.highWaterMark || state.flowing && state.length === 0)) {
    var len = state.length;
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length) // didn't get any data, stop spinning.
      break;
  }

  state.readingMore = false;
} // abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.


Readable.prototype._read = function (n) {
  errorOrDestroy(this, new ERR_METHOD_NOT_IMPLEMENTED('_read()'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;

    case 1:
      state.pipes = [state.pipes, dest];
      break;

    default:
      state.pipes.push(dest);
      break;
  }

  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) process.nextTick(endFn);else src.once('end', endFn);
  dest.on('unpipe', onunpipe);

  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');

    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  } // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.


  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);
  var cleanedUp = false;

  function cleanup() {
    debug('cleanup'); // cleanup event handlers once the pipe is broken

    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);
    cleanedUp = true; // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.

    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  src.on('data', ondata);

  function ondata(chunk) {
    debug('ondata');
    var ret = dest.write(chunk);
    debug('dest.write', ret);

    if (ret === false) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', state.awaitDrain);
        state.awaitDrain++;
      }

      src.pause();
    }
  } // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.


  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) errorOrDestroy(dest, er);
  } // Make sure our error handler is attached before userland ones.


  prependListener(dest, 'error', onerror); // Both close and finish should trigger unpipe, but only once.

  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }

  dest.once('close', onclose);

  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }

  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  } // tell the dest that it's being piped to


  dest.emit('pipe', src); // start the flow if it hasn't been started already.

  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function pipeOnDrainFunctionResult() {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;

    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = {
    hasUnpiped: false
  }; // if we're not piping anywhere, then do nothing.

  if (state.pipesCount === 0) return this; // just one destination.  most common case.

  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;
    if (!dest) dest = state.pipes; // got a match.

    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  } // slow case. multiple pipe destinations.


  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, {
        hasUnpiped: false
      });
    }

    return this;
  } // try to find the right one.


  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;
  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];
  dest.emit('unpipe', this, unpipeInfo);
  return this;
}; // set up data events if they are asked for
// Ensure readable listeners eventually get something


Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);
  var state = this._readableState;

  if (ev === 'data') {
    // update readableListening so that resume() may be a no-op
    // a few lines down. This is needed to support once('readable').
    state.readableListening = this.listenerCount('readable') > 0; // Try start flowing on next tick if stream isn't explicitly paused

    if (state.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.flowing = false;
      state.emittedReadable = false;
      debug('on readable', state.length, state.reading);

      if (state.length) {
        emitReadable(this);
      } else if (!state.reading) {
        process.nextTick(nReadingNextTick, this);
      }
    }
  }

  return res;
};

Readable.prototype.addListener = Readable.prototype.on;

Readable.prototype.removeListener = function (ev, fn) {
  var res = Stream.prototype.removeListener.call(this, ev, fn);

  if (ev === 'readable') {
    // We need to check if there is someone still listening to
    // readable and reset the state. However this needs to happen
    // after readable has been emitted but before I/O (nextTick) to
    // support once('readable', fn) cycles. This means that calling
    // resume within the same tick will have no
    // effect.
    process.nextTick(updateReadableListening, this);
  }

  return res;
};

Readable.prototype.removeAllListeners = function (ev) {
  var res = Stream.prototype.removeAllListeners.apply(this, arguments);

  if (ev === 'readable' || ev === undefined) {
    // We need to check if there is someone still listening to
    // readable and reset the state. However this needs to happen
    // after readable has been emitted but before I/O (nextTick) to
    // support once('readable', fn) cycles. This means that calling
    // resume within the same tick will have no
    // effect.
    process.nextTick(updateReadableListening, this);
  }

  return res;
};

function updateReadableListening(self) {
  var state = self._readableState;
  state.readableListening = self.listenerCount('readable') > 0;

  if (state.resumeScheduled && !state.paused) {
    // flowing needs to be set to true now, otherwise
    // the upcoming resume will not flow.
    state.flowing = true; // crude way to check if we should resume
  } else if (self.listenerCount('data') > 0) {
    self.resume();
  }
}

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
} // pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.


Readable.prototype.resume = function () {
  var state = this._readableState;

  if (!state.flowing) {
    debug('resume'); // we flow only if there is no one listening
    // for readable, but we still have to call
    // resume()

    state.flowing = !state.readableListening;
    resume(this, state);
  }

  state.paused = false;
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    process.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  debug('resume', state.reading);

  if (!state.reading) {
    stream.read(0);
  }

  state.resumeScheduled = false;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);

  if (this._readableState.flowing !== false) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }

  this._readableState.paused = true;
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);

  while (state.flowing && stream.read() !== null) {
    ;
  }
} // wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.


Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;
  stream.on('end', function () {
    debug('wrapped end');

    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });
  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk); // don't skip over falsy values in objectMode

    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);

    if (!ret) {
      paused = true;
      stream.pause();
    }
  }); // proxy all the other methods.
  // important when wrapping filters and duplexes.

  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function methodWrap(method) {
        return function methodWrapReturnFunction() {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  } // proxy certain important events.


  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  } // when we try to consume some more bytes, simply unpause the
  // underlying stream.


  this._read = function (n) {
    debug('wrapped _read', n);

    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

if (typeof Symbol === 'function') {
  Readable.prototype[Symbol.asyncIterator] = function () {
    if (createReadableStreamAsyncIterator === undefined) {
      createReadableStreamAsyncIterator = require('./internal/streams/async_iterator');
    }

    return createReadableStreamAsyncIterator(this);
  };
}

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState.highWaterMark;
  }
});
Object.defineProperty(Readable.prototype, 'readableBuffer', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState && this._readableState.buffer;
  }
});
Object.defineProperty(Readable.prototype, 'readableFlowing', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState.flowing;
  },
  set: function set(state) {
    if (this._readableState) {
      this._readableState.flowing = state;
    }
  }
}); // exposed for testing purposes only.

Readable._fromList = fromList;
Object.defineProperty(Readable.prototype, 'readableLength', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState.length;
  }
}); // Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.

function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;
  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.first();else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = state.buffer.consume(n, state.decoder);
  }
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;
  debug('endReadable', state.endEmitted);

  if (!state.endEmitted) {
    state.ended = true;
    process.nextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  debug('endReadableNT', state.endEmitted, state.length); // Check that we didn't get one last unshift.

  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');

    if (state.autoDestroy) {
      // In case of duplex streams we need a way to detect
      // if the writable side is ready for autoDestroy as well
      var wState = stream._writableState;

      if (!wState || wState.autoDestroy && wState.finished) {
        stream.destroy();
      }
    }
  }
}

if (typeof Symbol === 'function') {
  Readable.from = function (iterable, opts) {
    if (from === undefined) {
      from = require('./internal/streams/from');
    }

    return from(Readable, iterable, opts);
  };
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }

  return -1;
}
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../errors":156,"./_stream_duplex":157,"./internal/streams/async_iterator":162,"./internal/streams/buffer_list":163,"./internal/streams/destroy":164,"./internal/streams/from":166,"./internal/streams/state":168,"./internal/streams/stream":169,"_process":152,"buffer":47,"events":80,"inherits":85,"string_decoder/":207,"util":29}],160:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';

module.exports = Transform;

var _require$codes = require('../errors').codes,
    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
    ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
    ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
    ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;

var Duplex = require('./_stream_duplex');

require('inherits')(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;
  var cb = ts.writecb;

  if (cb === null) {
    return this.emit('error', new ERR_MULTIPLE_CALLBACK());
  }

  ts.writechunk = null;
  ts.writecb = null;
  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);
  cb(er);
  var rs = this._readableState;
  rs.reading = false;

  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);
  Duplex.call(this, options);
  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  }; // start out asking for a readable event once data is transformed.

  this._readableState.needReadable = true; // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.

  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;
    if (typeof options.flush === 'function') this._flush = options.flush;
  } // When the writable side finishes, then flush out anything remaining.


  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function' && !this._readableState.destroyed) {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
}; // This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.


Transform.prototype._transform = function (chunk, encoding, cb) {
  cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;

  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
}; // Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.


Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && !ts.transforming) {
    ts.transforming = true;

    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);
  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data); // TODO(BridgeAR): Write a test for these two error cases
  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided

  if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
  if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
  return stream.push(null);
}
},{"../errors":156,"./_stream_duplex":157,"inherits":85}],161:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.
'use strict';

module.exports = Writable;
/* <replacement> */

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
} // It seems a linked list but it is not
// there will be only 2 of these for each stream


function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;

  this.finish = function () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/


var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;
/*<replacement>*/

var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/

var Stream = require('./internal/streams/stream');
/*</replacement>*/


var Buffer = require('buffer').Buffer;

var OurUint8Array = global.Uint8Array || function () {};

function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}

function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

var destroyImpl = require('./internal/streams/destroy');

var _require = require('./internal/streams/state'),
    getHighWaterMark = _require.getHighWaterMark;

var _require$codes = require('../errors').codes,
    ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
    ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
    ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE,
    ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED,
    ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES,
    ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END,
    ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING;

var errorOrDestroy = destroyImpl.errorOrDestroy;

require('inherits')(Writable, Stream);

function nop() {}

function WritableState(options, stream, isDuplex) {
  Duplex = Duplex || require('./_stream_duplex');
  options = options || {}; // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream,
  // e.g. options.readableObjectMode vs. options.writableObjectMode, etc.

  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag to indicate whether or not this stream
  // contains buffers or objects.

  this.objectMode = !!options.objectMode;
  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()

  this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex); // if _final has been called

  this.finalCalled = false; // drain event flag.

  this.needDrain = false; // at the start of calling end()

  this.ending = false; // when end() has been called, and returned

  this.ended = false; // when 'finish' is emitted

  this.finished = false; // has it been destroyed

  this.destroyed = false; // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.

  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode; // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.

  this.defaultEncoding = options.defaultEncoding || 'utf8'; // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.

  this.length = 0; // a flag to see when we're in the middle of a write.

  this.writing = false; // when true all writes will be buffered until .uncork() call

  this.corked = 0; // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.

  this.sync = true; // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.

  this.bufferProcessing = false; // the callback that's passed to _write(chunk,cb)

  this.onwrite = function (er) {
    onwrite(stream, er);
  }; // the callback that the user supplies to write(chunk,encoding,cb)


  this.writecb = null; // the amount that is being written when _write is called.

  this.writelen = 0;
  this.bufferedRequest = null;
  this.lastBufferedRequest = null; // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted

  this.pendingcb = 0; // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams

  this.prefinished = false; // True if the error was already emitted and should not be thrown again

  this.errorEmitted = false; // Should close be emitted on destroy. Defaults to true.

  this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'finish' (and potentially 'end')

  this.autoDestroy = !!options.autoDestroy; // count buffered requests

  this.bufferedRequestCount = 0; // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two

  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];

  while (current) {
    out.push(current);
    current = current.next;
  }

  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function writableStateBufferGetter() {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})(); // Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.


var realHasInstance;

if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function value(object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;
      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function realHasInstance(object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex'); // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.
  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  // Checking for a Stream.Duplex instance is faster here instead of inside
  // the WritableState constructor, at least with V8 6.5

  var isDuplex = this instanceof Duplex;
  if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options);
  this._writableState = new WritableState(options, this, isDuplex); // legacy.

  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;
    if (typeof options.writev === 'function') this._writev = options.writev;
    if (typeof options.destroy === 'function') this._destroy = options.destroy;
    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
} // Otherwise people can pipe Writable streams, which is just wrong.


Writable.prototype.pipe = function () {
  errorOrDestroy(this, new ERR_STREAM_CANNOT_PIPE());
};

function writeAfterEnd(stream, cb) {
  var er = new ERR_STREAM_WRITE_AFTER_END(); // TODO: defer error events consistently everywhere, not just the cb

  errorOrDestroy(stream, er);
  process.nextTick(cb, er);
} // Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.


function validChunk(stream, state, chunk, cb) {
  var er;

  if (chunk === null) {
    er = new ERR_STREAM_NULL_VALUES();
  } else if (typeof chunk !== 'string' && !state.objectMode) {
    er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk);
  }

  if (er) {
    errorOrDestroy(stream, er);
    process.nextTick(cb, er);
    return false;
  }

  return true;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
  if (typeof cb !== 'function') cb = nop;
  if (state.ending) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }
  return ret;
};

Writable.prototype.cork = function () {
  this._writableState.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;
    if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new ERR_UNKNOWN_ENCODING(encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

Object.defineProperty(Writable.prototype, 'writableBuffer', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState && this._writableState.getBuffer();
  }
});

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }

  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.highWaterMark;
  }
}); // if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.

function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);

    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }

  var len = state.objectMode ? 1 : chunk.length;
  state.length += len;
  var ret = state.length < state.highWaterMark; // we must ensure that previous needDrain will not be reset to false.

  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };

    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }

    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    process.nextTick(cb, er); // this can emit finish, and it will always happen
    // after error

    process.nextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    errorOrDestroy(stream, er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    errorOrDestroy(stream, er); // this can emit finish, but finish must
    // always follow error

    finishMaybe(stream, state);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;
  if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK();
  onwriteStateUpdate(state);
  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state) || stream.destroyed;

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      process.nextTick(afterWrite, stream, state, finished, cb);
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
} // Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.


function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
} // if there's something in the buffer waiting, then process it


function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;
    var count = 0;
    var allBuffers = true;

    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }

    buffer.allBuffers = allBuffers;
    doWrite(stream, state, true, state.length, buffer, '', holder.finish); // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite

    state.pendingcb++;
    state.lastBufferedRequest = null;

    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }

    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;
      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--; // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.

      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new ERR_METHOD_NOT_IMPLEMENTED('_write()'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); // .end() fully uncorks

  if (state.corked) {
    state.corked = 1;
    this.uncork();
  } // ignore unnecessary end() calls.


  if (!state.ending) endWritable(this, state, cb);
  return this;
};

Object.defineProperty(Writable.prototype, 'writableLength', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.length;
  }
});

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}

function callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;

    if (err) {
      errorOrDestroy(stream, err);
    }

    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}

function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function' && !state.destroyed) {
      state.pendingcb++;
      state.finalCalled = true;
      process.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);

  if (need) {
    prefinish(stream, state);

    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');

      if (state.autoDestroy) {
        // In case of duplex streams we need a way to detect
        // if the readable side is ready for autoDestroy as well
        var rState = stream._readableState;

        if (!rState || rState.autoDestroy && rState.endEmitted) {
          stream.destroy();
        }
      }
    }
  }

  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);

  if (cb) {
    if (state.finished) process.nextTick(cb);else stream.once('finish', cb);
  }

  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;

  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  } // reuse the free corkReq.


  state.corkedRequestsFree.next = corkReq;
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    if (this._writableState === undefined) {
      return false;
    }

    return this._writableState.destroyed;
  },
  set: function set(value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    } // backward compatibility, the user is explicitly
    // managing destroyed


    this._writableState.destroyed = value;
  }
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;

Writable.prototype._destroy = function (err, cb) {
  cb(err);
};
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../errors":156,"./_stream_duplex":157,"./internal/streams/destroy":164,"./internal/streams/state":168,"./internal/streams/stream":169,"_process":152,"buffer":47,"inherits":85,"util-deprecate":214}],162:[function(require,module,exports){
(function (process){(function (){
'use strict';

var _Object$setPrototypeO;

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var finished = require('./end-of-stream');

var kLastResolve = Symbol('lastResolve');
var kLastReject = Symbol('lastReject');
var kError = Symbol('error');
var kEnded = Symbol('ended');
var kLastPromise = Symbol('lastPromise');
var kHandlePromise = Symbol('handlePromise');
var kStream = Symbol('stream');

function createIterResult(value, done) {
  return {
    value: value,
    done: done
  };
}

function readAndResolve(iter) {
  var resolve = iter[kLastResolve];

  if (resolve !== null) {
    var data = iter[kStream].read(); // we defer if data is null
    // we can be expecting either 'end' or
    // 'error'

    if (data !== null) {
      iter[kLastPromise] = null;
      iter[kLastResolve] = null;
      iter[kLastReject] = null;
      resolve(createIterResult(data, false));
    }
  }
}

function onReadable(iter) {
  // we wait for the next tick, because it might
  // emit an error with process.nextTick
  process.nextTick(readAndResolve, iter);
}

function wrapForNext(lastPromise, iter) {
  return function (resolve, reject) {
    lastPromise.then(function () {
      if (iter[kEnded]) {
        resolve(createIterResult(undefined, true));
        return;
      }

      iter[kHandlePromise](resolve, reject);
    }, reject);
  };
}

var AsyncIteratorPrototype = Object.getPrototypeOf(function () {});
var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = {
  get stream() {
    return this[kStream];
  },

  next: function next() {
    var _this = this;

    // if we have detected an error in the meanwhile
    // reject straight away
    var error = this[kError];

    if (error !== null) {
      return Promise.reject(error);
    }

    if (this[kEnded]) {
      return Promise.resolve(createIterResult(undefined, true));
    }

    if (this[kStream].destroyed) {
      // We need to defer via nextTick because if .destroy(err) is
      // called, the error will be emitted via nextTick, and
      // we cannot guarantee that there is no error lingering around
      // waiting to be emitted.
      return new Promise(function (resolve, reject) {
        process.nextTick(function () {
          if (_this[kError]) {
            reject(_this[kError]);
          } else {
            resolve(createIterResult(undefined, true));
          }
        });
      });
    } // if we have multiple next() calls
    // we will wait for the previous Promise to finish
    // this logic is optimized to support for await loops,
    // where next() is only called once at a time


    var lastPromise = this[kLastPromise];
    var promise;

    if (lastPromise) {
      promise = new Promise(wrapForNext(lastPromise, this));
    } else {
      // fast path needed to support multiple this.push()
      // without triggering the next() queue
      var data = this[kStream].read();

      if (data !== null) {
        return Promise.resolve(createIterResult(data, false));
      }

      promise = new Promise(this[kHandlePromise]);
    }

    this[kLastPromise] = promise;
    return promise;
  }
}, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () {
  return this;
}), _defineProperty(_Object$setPrototypeO, "return", function _return() {
  var _this2 = this;

  // destroy(err, cb) is a private API
  // we can guarantee we have that here, because we control the
  // Readable class this is attached to
  return new Promise(function (resolve, reject) {
    _this2[kStream].destroy(null, function (err) {
      if (err) {
        reject(err);
        return;
      }

      resolve(createIterResult(undefined, true));
    });
  });
}), _Object$setPrototypeO), AsyncIteratorPrototype);

var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) {
  var _Object$create;

  var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, {
    value: stream,
    writable: true
  }), _defineProperty(_Object$create, kLastResolve, {
    value: null,
    writable: true
  }), _defineProperty(_Object$create, kLastReject, {
    value: null,
    writable: true
  }), _defineProperty(_Object$create, kError, {
    value: null,
    writable: true
  }), _defineProperty(_Object$create, kEnded, {
    value: stream._readableState.endEmitted,
    writable: true
  }), _defineProperty(_Object$create, kHandlePromise, {
    value: function value(resolve, reject) {
      var data = iterator[kStream].read();

      if (data) {
        iterator[kLastPromise] = null;
        iterator[kLastResolve] = null;
        iterator[kLastReject] = null;
        resolve(createIterResult(data, false));
      } else {
        iterator[kLastResolve] = resolve;
        iterator[kLastReject] = reject;
      }
    },
    writable: true
  }), _Object$create));
  iterator[kLastPromise] = null;
  finished(stream, function (err) {
    if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
      var reject = iterator[kLastReject]; // reject if we are waiting for data in the Promise
      // returned by next() and store the error

      if (reject !== null) {
        iterator[kLastPromise] = null;
        iterator[kLastResolve] = null;
        iterator[kLastReject] = null;
        reject(err);
      }

      iterator[kError] = err;
      return;
    }

    var resolve = iterator[kLastResolve];

    if (resolve !== null) {
      iterator[kLastPromise] = null;
      iterator[kLastResolve] = null;
      iterator[kLastReject] = null;
      resolve(createIterResult(undefined, true));
    }

    iterator[kEnded] = true;
  });
  stream.on('readable', onReadable.bind(null, iterator));
  return iterator;
};

module.exports = createReadableStreamAsyncIterator;
}).call(this)}).call(this,require('_process'))
},{"./end-of-stream":165,"_process":152}],163:[function(require,module,exports){
'use strict';

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _require = require('buffer'),
    Buffer = _require.Buffer;

var _require2 = require('util'),
    inspect = _require2.inspect;

var custom = inspect && inspect.custom || 'inspect';

function copyBuffer(src, target, offset) {
  Buffer.prototype.copy.call(src, target, offset);
}

module.exports =
/*#__PURE__*/
function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  _createClass(BufferList, [{
    key: "push",
    value: function push(v) {
      var entry = {
        data: v,
        next: null
      };
      if (this.length > 0) this.tail.next = entry;else this.head = entry;
      this.tail = entry;
      ++this.length;
    }
  }, {
    key: "unshift",
    value: function unshift(v) {
      var entry = {
        data: v,
        next: this.head
      };
      if (this.length === 0) this.tail = entry;
      this.head = entry;
      ++this.length;
    }
  }, {
    key: "shift",
    value: function shift() {
      if (this.length === 0) return;
      var ret = this.head.data;
      if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
      --this.length;
      return ret;
    }
  }, {
    key: "clear",
    value: function clear() {
      this.head = this.tail = null;
      this.length = 0;
    }
  }, {
    key: "join",
    value: function join(s) {
      if (this.length === 0) return '';
      var p = this.head;
      var ret = '' + p.data;

      while (p = p.next) {
        ret += s + p.data;
      }

      return ret;
    }
  }, {
    key: "concat",
    value: function concat(n) {
      if (this.length === 0) return Buffer.alloc(0);
      var ret = Buffer.allocUnsafe(n >>> 0);
      var p = this.head;
      var i = 0;

      while (p) {
        copyBuffer(p.data, ret, i);
        i += p.data.length;
        p = p.next;
      }

      return ret;
    } // Consumes a specified amount of bytes or characters from the buffered data.

  }, {
    key: "consume",
    value: function consume(n, hasStrings) {
      var ret;

      if (n < this.head.data.length) {
        // `slice` is the same for buffers and strings.
        ret = this.head.data.slice(0, n);
        this.head.data = this.head.data.slice(n);
      } else if (n === this.head.data.length) {
        // First chunk is a perfect match.
        ret = this.shift();
      } else {
        // Result spans more than one buffer.
        ret = hasStrings ? this._getString(n) : this._getBuffer(n);
      }

      return ret;
    }
  }, {
    key: "first",
    value: function first() {
      return this.head.data;
    } // Consumes a specified amount of characters from the buffered data.

  }, {
    key: "_getString",
    value: function _getString(n) {
      var p = this.head;
      var c = 1;
      var ret = p.data;
      n -= ret.length;

      while (p = p.next) {
        var str = p.data;
        var nb = n > str.length ? str.length : n;
        if (nb === str.length) ret += str;else ret += str.slice(0, n);
        n -= nb;

        if (n === 0) {
          if (nb === str.length) {
            ++c;
            if (p.next) this.head = p.next;else this.head = this.tail = null;
          } else {
            this.head = p;
            p.data = str.slice(nb);
          }

          break;
        }

        ++c;
      }

      this.length -= c;
      return ret;
    } // Consumes a specified amount of bytes from the buffered data.

  }, {
    key: "_getBuffer",
    value: function _getBuffer(n) {
      var ret = Buffer.allocUnsafe(n);
      var p = this.head;
      var c = 1;
      p.data.copy(ret);
      n -= p.data.length;

      while (p = p.next) {
        var buf = p.data;
        var nb = n > buf.length ? buf.length : n;
        buf.copy(ret, ret.length - n, 0, nb);
        n -= nb;

        if (n === 0) {
          if (nb === buf.length) {
            ++c;
            if (p.next) this.head = p.next;else this.head = this.tail = null;
          } else {
            this.head = p;
            p.data = buf.slice(nb);
          }

          break;
        }

        ++c;
      }

      this.length -= c;
      return ret;
    } // Make sure the linked list only shows the minimal necessary information.

  }, {
    key: custom,
    value: function value(_, options) {
      return inspect(this, _objectSpread({}, options, {
        // Only inspect one level.
        depth: 0,
        // It should not recurse.
        customInspect: false
      }));
    }
  }]);

  return BufferList;
}();
},{"buffer":47,"util":29}],164:[function(require,module,exports){
(function (process){(function (){
'use strict'; // undocumented cb() API, needed for core, not for public API

function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err) {
      if (!this._writableState) {
        process.nextTick(emitErrorNT, this, err);
      } else if (!this._writableState.errorEmitted) {
        this._writableState.errorEmitted = true;
        process.nextTick(emitErrorNT, this, err);
      }
    }

    return this;
  } // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks


  if (this._readableState) {
    this._readableState.destroyed = true;
  } // if this is a duplex stream mark the writable part as destroyed as well


  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      if (!_this._writableState) {
        process.nextTick(emitErrorAndCloseNT, _this, err);
      } else if (!_this._writableState.errorEmitted) {
        _this._writableState.errorEmitted = true;
        process.nextTick(emitErrorAndCloseNT, _this, err);
      } else {
        process.nextTick(emitCloseNT, _this);
      }
    } else if (cb) {
      process.nextTick(emitCloseNT, _this);
      cb(err);
    } else {
      process.nextTick(emitCloseNT, _this);
    }
  });

  return this;
}

function emitErrorAndCloseNT(self, err) {
  emitErrorNT(self, err);
  emitCloseNT(self);
}

function emitCloseNT(self) {
  if (self._writableState && !self._writableState.emitClose) return;
  if (self._readableState && !self._readableState.emitClose) return;
  self.emit('close');
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finalCalled = false;
    this._writableState.prefinished = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

function errorOrDestroy(stream, err) {
  // We have tests that rely on errors being emitted
  // in the same tick, so changing this is semver major.
  // For now when you opt-in to autoDestroy we allow
  // the error to be emitted nextTick. In a future
  // semver major update we should change the default to this.
  var rState = stream._readableState;
  var wState = stream._writableState;
  if (rState && rState.autoDestroy || wState && wState.autoDestroy) stream.destroy(err);else stream.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy,
  errorOrDestroy: errorOrDestroy
};
}).call(this)}).call(this,require('_process'))
},{"_process":152}],165:[function(require,module,exports){
// Ported from https://github.com/mafintosh/end-of-stream with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';

var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;

function once(callback) {
  var called = false;
  return function () {
    if (called) return;
    called = true;

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    callback.apply(this, args);
  };
}

function noop() {}

function isRequest(stream) {
  return stream.setHeader && typeof stream.abort === 'function';
}

function eos(stream, opts, callback) {
  if (typeof opts === 'function') return eos(stream, null, opts);
  if (!opts) opts = {};
  callback = once(callback || noop);
  var readable = opts.readable || opts.readable !== false && stream.readable;
  var writable = opts.writable || opts.writable !== false && stream.writable;

  var onlegacyfinish = function onlegacyfinish() {
    if (!stream.writable) onfinish();
  };

  var writableEnded = stream._writableState && stream._writableState.finished;

  var onfinish = function onfinish() {
    writable = false;
    writableEnded = true;
    if (!readable) callback.call(stream);
  };

  var readableEnded = stream._readableState && stream._readableState.endEmitted;

  var onend = function onend() {
    readable = false;
    readableEnded = true;
    if (!writable) callback.call(stream);
  };

  var onerror = function onerror(err) {
    callback.call(stream, err);
  };

  var onclose = function onclose() {
    var err;

    if (readable && !readableEnded) {
      if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
      return callback.call(stream, err);
    }

    if (writable && !writableEnded) {
      if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
      return callback.call(stream, err);
    }
  };

  var onrequest = function onrequest() {
    stream.req.on('finish', onfinish);
  };

  if (isRequest(stream)) {
    stream.on('complete', onfinish);
    stream.on('abort', onclose);
    if (stream.req) onrequest();else stream.on('request', onrequest);
  } else if (writable && !stream._writableState) {
    // legacy streams
    stream.on('end', onlegacyfinish);
    stream.on('close', onlegacyfinish);
  }

  stream.on('end', onend);
  stream.on('finish', onfinish);
  if (opts.error !== false) stream.on('error', onerror);
  stream.on('close', onclose);
  return function () {
    stream.removeListener('complete', onfinish);
    stream.removeListener('abort', onclose);
    stream.removeListener('request', onrequest);
    if (stream.req) stream.req.removeListener('finish', onfinish);
    stream.removeListener('end', onlegacyfinish);
    stream.removeListener('close', onlegacyfinish);
    stream.removeListener('finish', onfinish);
    stream.removeListener('end', onend);
    stream.removeListener('error', onerror);
    stream.removeListener('close', onclose);
  };
}

module.exports = eos;
},{"../../../errors":156}],166:[function(require,module,exports){
module.exports = function () {
  throw new Error('Readable.from is not available in the browser')
};

},{}],167:[function(require,module,exports){
// Ported from https://github.com/mafintosh/pump with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';

var eos;

function once(callback) {
  var called = false;
  return function () {
    if (called) return;
    called = true;
    callback.apply(void 0, arguments);
  };
}

var _require$codes = require('../../../errors').codes,
    ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS,
    ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED;

function noop(err) {
  // Rethrow the error if it exists to avoid swallowing it
  if (err) throw err;
}

function isRequest(stream) {
  return stream.setHeader && typeof stream.abort === 'function';
}

function destroyer(stream, reading, writing, callback) {
  callback = once(callback);
  var closed = false;
  stream.on('close', function () {
    closed = true;
  });
  if (eos === undefined) eos = require('./end-of-stream');
  eos(stream, {
    readable: reading,
    writable: writing
  }, function (err) {
    if (err) return callback(err);
    closed = true;
    callback();
  });
  var destroyed = false;
  return function (err) {
    if (closed) return;
    if (destroyed) return;
    destroyed = true; // request.destroy just do .end - .abort is what we want

    if (isRequest(stream)) return stream.abort();
    if (typeof stream.destroy === 'function') return stream.destroy();
    callback(err || new ERR_STREAM_DESTROYED('pipe'));
  };
}

function call(fn) {
  fn();
}

function pipe(from, to) {
  return from.pipe(to);
}

function popCallback(streams) {
  if (!streams.length) return noop;
  if (typeof streams[streams.length - 1] !== 'function') return noop;
  return streams.pop();
}

function pipeline() {
  for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) {
    streams[_key] = arguments[_key];
  }

  var callback = popCallback(streams);
  if (Array.isArray(streams[0])) streams = streams[0];

  if (streams.length < 2) {
    throw new ERR_MISSING_ARGS('streams');
  }

  var error;
  var destroys = streams.map(function (stream, i) {
    var reading = i < streams.length - 1;
    var writing = i > 0;
    return destroyer(stream, reading, writing, function (err) {
      if (!error) error = err;
      if (err) destroys.forEach(call);
      if (reading) return;
      destroys.forEach(call);
      callback(error);
    });
  });
  return streams.reduce(pipe);
}

module.exports = pipeline;
},{"../../../errors":156,"./end-of-stream":165}],168:[function(require,module,exports){
'use strict';

var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE;

function highWaterMarkFrom(options, isDuplex, duplexKey) {
  return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null;
}

function getHighWaterMark(state, options, duplexKey, isDuplex) {
  var hwm = highWaterMarkFrom(options, isDuplex, duplexKey);

  if (hwm != null) {
    if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) {
      var name = isDuplex ? duplexKey : 'highWaterMark';
      throw new ERR_INVALID_OPT_VALUE(name, hwm);
    }

    return Math.floor(hwm);
  } // Default value


  return state.objectMode ? 16 : 16 * 1024;
}

module.exports = {
  getHighWaterMark: getHighWaterMark
};
},{"../../../errors":156}],169:[function(require,module,exports){
arguments[4][41][0].apply(exports,arguments)
},{"dup":41,"events":80}],170:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
exports.finished = require('./lib/internal/streams/end-of-stream.js');
exports.pipeline = require('./lib/internal/streams/pipeline.js');

},{"./lib/_stream_duplex.js":157,"./lib/_stream_passthrough.js":158,"./lib/_stream_readable.js":159,"./lib/_stream_transform.js":160,"./lib/_stream_writable.js":161,"./lib/internal/streams/end-of-stream.js":165,"./lib/internal/streams/pipeline.js":167}],171:[function(require,module,exports){
var EventEmitter = require('events').EventEmitter
var backoff = require('backoff')
var noop = function () {}

module.exports =
function (createConnection) {
  return function (opts, onConnect) {
    onConnect = 'function' == typeof opts ? opts : onConnect
    opts = 'object' == typeof opts ? opts : {initialDelay: 1e3, maxDelay: 30e3}
    if(!onConnect)
      onConnect = opts.onConnect

    var emitter = opts.emitter || new EventEmitter()
    emitter.connected = false
    emitter.reconnect = true

    if(onConnect)
      emitter.on('connect', onConnect)

    var backoffMethod = (backoff[opts.type] || backoff.fibonacci) (opts)

    backoffMethod.on('backoff', function (n, d) {
      emitter.emit('backoff', n, d)
    })

    var args
    var cleanup = noop
    backoffMethod.on('ready', attempt)
    function attempt (n, delay) {
      if(!emitter.reconnect) return

      cleanup()
      emitter.emit('reconnect', n, delay)
      var con = createConnection.apply(null, args)
      if (con !== emitter._connection)
        emitter.emit('connection', con)
      emitter._connection = con

      cleanup = onCleanup
      function onCleanup(err) {
        cleanup = noop
        con.removeListener('connect', connect)
        con.removeListener('error', onDisconnect)
        con.removeListener('close', onDisconnect)
        con.removeListener('end'  , onDisconnect)

        //hack to make http not crash.
        //HTTP IS THE WORST PROTOCOL.
        if(con.constructor.name == 'Request')
          con.on('error', noop)

      }

      function onDisconnect (err) {
        emitter.connected = false
        onCleanup(err)

        //emit disconnect before checking reconnect, so user has a chance to decide not to.
        emitter.emit('disconnect', err)

        if(!emitter.reconnect) return
        try { backoffMethod.backoff() } catch (_) { }
      }

      function connect() {
        backoffMethod.reset()
        emitter.connected = true
        if(onConnect)
          con.removeListener('connect', onConnect)
        emitter.emit('connect', con)
      }

      con
        .on('error', onDisconnect)
        .on('close', onDisconnect)
        .on('end'  , onDisconnect)

      if(opts.immediate || con.constructor.name == 'Request') {
        emitter.connected = true
        emitter.emit('connect', con)
        con.once('data', function () {
          //this is the only way to know for sure that data is coming...
          backoffMethod.reset()
        })
      } else {
        con.on('connect', connect)
      }
    }

    emitter.connect =
    emitter.listen = function () {
      this.reconnect = true
      backoffMethod.reset()
      args = [].slice.call(arguments)
      attempt(0, 0)
      return emitter
    }

    //force reconnection

    emitter.end =
    emitter.disconnect = function () {
      emitter.reconnect = false

      if(emitter._connection)
        emitter._connection.end()

      emitter.emit('disconnect')
      return emitter
    }

    return emitter
  }

}

},{"backoff":21,"events":80}],172:[function(require,module,exports){
/*
 *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
 /* eslint-env node */
'use strict';

var SDPUtils = require('sdp');

function fixStatsType(stat) {
  return {
    inboundrtp: 'inbound-rtp',
    outboundrtp: 'outbound-rtp',
    candidatepair: 'candidate-pair',
    localcandidate: 'local-candidate',
    remotecandidate: 'remote-candidate'
  }[stat.type] || stat.type;
}

function writeMediaSection(transceiver, caps, type, stream, dtlsRole) {
  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);

  // Map ICE parameters (ufrag, pwd) to SDP.
  sdp += SDPUtils.writeIceParameters(
      transceiver.iceGatherer.getLocalParameters());

  // Map DTLS parameters to SDP.
  sdp += SDPUtils.writeDtlsParameters(
      transceiver.dtlsTransport.getLocalParameters(),
      type === 'offer' ? 'actpass' : dtlsRole || 'active');

  sdp += 'a=mid:' + transceiver.mid + '\r\n';

  if (transceiver.rtpSender && transceiver.rtpReceiver) {
    sdp += 'a=sendrecv\r\n';
  } else if (transceiver.rtpSender) {
    sdp += 'a=sendonly\r\n';
  } else if (transceiver.rtpReceiver) {
    sdp += 'a=recvonly\r\n';
  } else {
    sdp += 'a=inactive\r\n';
  }

  if (transceiver.rtpSender) {
    var trackId = transceiver.rtpSender._initialTrackId ||
        transceiver.rtpSender.track.id;
    transceiver.rtpSender._initialTrackId = trackId;
    // spec.
    var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +
        trackId + '\r\n';
    sdp += 'a=' + msid;
    // for Chrome. Legacy should no longer be required.
    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
        ' ' + msid;

    // RTX
    if (transceiver.sendEncodingParameters[0].rtx) {
      sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
          ' ' + msid;
      sdp += 'a=ssrc-group:FID ' +
          transceiver.sendEncodingParameters[0].ssrc + ' ' +
          transceiver.sendEncodingParameters[0].rtx.ssrc +
          '\r\n';
    }
  }
  // FIXME: this should be written by writeRtpDescription.
  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
      ' cname:' + SDPUtils.localCName + '\r\n';
  if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
        ' cname:' + SDPUtils.localCName + '\r\n';
  }
  return sdp;
}

// Edge does not like
// 1) stun: filtered after 14393 unless ?transport=udp is present
// 2) turn: that does not have all of turn:host:port?transport=udp
// 3) turn: with ipv6 addresses
// 4) turn: occurring muliple times
function filterIceServers(iceServers, edgeVersion) {
  var hasTurn = false;
  iceServers = JSON.parse(JSON.stringify(iceServers));
  return iceServers.filter(function(server) {
    if (server && (server.urls || server.url)) {
      var urls = server.urls || server.url;
      if (server.url && !server.urls) {
        console.warn('RTCIceServer.url is deprecated! Use urls instead.');
      }
      var isString = typeof urls === 'string';
      if (isString) {
        urls = [urls];
      }
      urls = urls.filter(function(url) {
        var validTurn = url.indexOf('turn:') === 0 &&
            url.indexOf('transport=udp') !== -1 &&
            url.indexOf('turn:[') === -1 &&
            !hasTurn;

        if (validTurn) {
          hasTurn = true;
          return true;
        }
        return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&
            url.indexOf('?transport=udp') === -1;
      });

      delete server.url;
      server.urls = isString ? urls[0] : urls;
      return !!urls.length;
    }
  });
}

// Determines the intersection of local and remote capabilities.
function getCommonCapabilities(localCapabilities, remoteCapabilities) {
  var commonCapabilities = {
    codecs: [],
    headerExtensions: [],
    fecMechanisms: []
  };

  var findCodecByPayloadType = function(pt, codecs) {
    pt = parseInt(pt, 10);
    for (var i = 0; i < codecs.length; i++) {
      if (codecs[i].payloadType === pt ||
          codecs[i].preferredPayloadType === pt) {
        return codecs[i];
      }
    }
  };

  var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {
    var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);
    var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);
    return lCodec && rCodec &&
        lCodec.name.toLowerCase() === rCodec.name.toLowerCase();
  };

  localCapabilities.codecs.forEach(function(lCodec) {
    for (var i = 0; i < remoteCapabilities.codecs.length; i++) {
      var rCodec = remoteCapabilities.codecs[i];
      if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&
          lCodec.clockRate === rCodec.clockRate) {
        if (lCodec.name.toLowerCase() === 'rtx' &&
            lCodec.parameters && rCodec.parameters.apt) {
          // for RTX we need to find the local rtx that has a apt
          // which points to the same local codec as the remote one.
          if (!rtxCapabilityMatches(lCodec, rCodec,
              localCapabilities.codecs, remoteCapabilities.codecs)) {
            continue;
          }
        }
        rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy
        // number of channels is the highest common number of channels
        rCodec.numChannels = Math.min(lCodec.numChannels,
            rCodec.numChannels);
        // push rCodec so we reply with offerer payload type
        commonCapabilities.codecs.push(rCodec);

        // determine common feedback mechanisms
        rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {
          for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {
            if (lCodec.rtcpFeedback[j].type === fb.type &&
                lCodec.rtcpFeedback[j].parameter === fb.parameter) {
              return true;
            }
          }
          return false;
        });
        // FIXME: also need to determine .parameters
        //  see https://github.com/openpeer/ortc/issues/569
        break;
      }
    }
  });

  localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {
    for (var i = 0; i < remoteCapabilities.headerExtensions.length;
         i++) {
      var rHeaderExtension = remoteCapabilities.headerExtensions[i];
      if (lHeaderExtension.uri === rHeaderExtension.uri) {
        commonCapabilities.headerExtensions.push(rHeaderExtension);
        break;
      }
    }
  });

  // FIXME: fecMechanisms
  return commonCapabilities;
}

// is action=setLocalDescription with type allowed in signalingState
function isActionAllowedInSignalingState(action, type, signalingState) {
  return {
    offer: {
      setLocalDescription: ['stable', 'have-local-offer'],
      setRemoteDescription: ['stable', 'have-remote-offer']
    },
    answer: {
      setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],
      setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']
    }
  }[type][action].indexOf(signalingState) !== -1;
}

function maybeAddCandidate(iceTransport, candidate) {
  // Edge's internal representation adds some fields therefore
  // not all fieldѕ are taken into account.
  var alreadyAdded = iceTransport.getRemoteCandidates()
      .find(function(remoteCandidate) {
        return candidate.foundation === remoteCandidate.foundation &&
            candidate.ip === remoteCandidate.ip &&
            candidate.port === remoteCandidate.port &&
            candidate.priority === remoteCandidate.priority &&
            candidate.protocol === remoteCandidate.protocol &&
            candidate.type === remoteCandidate.type;
      });
  if (!alreadyAdded) {
    iceTransport.addRemoteCandidate(candidate);
  }
  return !alreadyAdded;
}


function makeError(name, description) {
  var e = new Error(description);
  e.name = name;
  // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names
  e.code = {
    NotSupportedError: 9,
    InvalidStateError: 11,
    InvalidAccessError: 15,
    TypeError: undefined,
    OperationError: undefined
  }[name];
  return e;
}

module.exports = function(window, edgeVersion) {
  // https://w3c.github.io/mediacapture-main/#mediastream
  // Helper function to add the track to the stream and
  // dispatch the event ourselves.
  function addTrackToStreamAndFireEvent(track, stream) {
    stream.addTrack(track);
    stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',
        {track: track}));
  }

  function removeTrackFromStreamAndFireEvent(track, stream) {
    stream.removeTrack(track);
    stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',
        {track: track}));
  }

  function fireAddTrack(pc, track, receiver, streams) {
    var trackEvent = new Event('track');
    trackEvent.track = track;
    trackEvent.receiver = receiver;
    trackEvent.transceiver = {receiver: receiver};
    trackEvent.streams = streams;
    window.setTimeout(function() {
      pc._dispatchEvent('track', trackEvent);
    });
  }

  var RTCPeerConnection = function(config) {
    var pc = this;

    var _eventTarget = document.createDocumentFragment();
    ['addEventListener', 'removeEventListener', 'dispatchEvent']
        .forEach(function(method) {
          pc[method] = _eventTarget[method].bind(_eventTarget);
        });

    this.canTrickleIceCandidates = null;

    this.needNegotiation = false;

    this.localStreams = [];
    this.remoteStreams = [];

    this._localDescription = null;
    this._remoteDescription = null;

    this.signalingState = 'stable';
    this.iceConnectionState = 'new';
    this.connectionState = 'new';
    this.iceGatheringState = 'new';

    config = JSON.parse(JSON.stringify(config || {}));

    this.usingBundle = config.bundlePolicy === 'max-bundle';
    if (config.rtcpMuxPolicy === 'negotiate') {
      throw(makeError('NotSupportedError',
          'rtcpMuxPolicy \'negotiate\' is not supported'));
    } else if (!config.rtcpMuxPolicy) {
      config.rtcpMuxPolicy = 'require';
    }

    switch (config.iceTransportPolicy) {
      case 'all':
      case 'relay':
        break;
      default:
        config.iceTransportPolicy = 'all';
        break;
    }

    switch (config.bundlePolicy) {
      case 'balanced':
      case 'max-compat':
      case 'max-bundle':
        break;
      default:
        config.bundlePolicy = 'balanced';
        break;
    }

    config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);

    this._iceGatherers = [];
    if (config.iceCandidatePoolSize) {
      for (var i = config.iceCandidatePoolSize; i > 0; i--) {
        this._iceGatherers.push(new window.RTCIceGatherer({
          iceServers: config.iceServers,
          gatherPolicy: config.iceTransportPolicy
        }));
      }
    } else {
      config.iceCandidatePoolSize = 0;
    }

    this._config = config;

    // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
    // everything that is needed to describe a SDP m-line.
    this.transceivers = [];

    this._sdpSessionId = SDPUtils.generateSessionId();
    this._sdpSessionVersion = 0;

    this._dtlsRole = undefined; // role for a=setup to use in answers.

    this._isClosed = false;
  };

  Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {
    configurable: true,
    get: function() {
      return this._localDescription;
    }
  });
  Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {
    configurable: true,
    get: function() {
      return this._remoteDescription;
    }
  });

  // set up event handlers on prototype
  RTCPeerConnection.prototype.onicecandidate = null;
  RTCPeerConnection.prototype.onaddstream = null;
  RTCPeerConnection.prototype.ontrack = null;
  RTCPeerConnection.prototype.onremovestream = null;
  RTCPeerConnection.prototype.onsignalingstatechange = null;
  RTCPeerConnection.prototype.oniceconnectionstatechange = null;
  RTCPeerConnection.prototype.onconnectionstatechange = null;
  RTCPeerConnection.prototype.onicegatheringstatechange = null;
  RTCPeerConnection.prototype.onnegotiationneeded = null;
  RTCPeerConnection.prototype.ondatachannel = null;

  RTCPeerConnection.prototype._dispatchEvent = function(name, event) {
    if (this._isClosed) {
      return;
    }
    this.dispatchEvent(event);
    if (typeof this['on' + name] === 'function') {
      this['on' + name](event);
    }
  };

  RTCPeerConnection.prototype._emitGatheringStateChange = function() {
    var event = new Event('icegatheringstatechange');
    this._dispatchEvent('icegatheringstatechange', event);
  };

  RTCPeerConnection.prototype.getConfiguration = function() {
    return this._config;
  };

  RTCPeerConnection.prototype.getLocalStreams = function() {
    return this.localStreams;
  };

  RTCPeerConnection.prototype.getRemoteStreams = function() {
    return this.remoteStreams;
  };

  // internal helper to create a transceiver object.
  // (which is not yet the same as the WebRTC 1.0 transceiver)
  RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {
    var hasBundleTransport = this.transceivers.length > 0;
    var transceiver = {
      track: null,
      iceGatherer: null,
      iceTransport: null,
      dtlsTransport: null,
      localCapabilities: null,
      remoteCapabilities: null,
      rtpSender: null,
      rtpReceiver: null,
      kind: kind,
      mid: null,
      sendEncodingParameters: null,
      recvEncodingParameters: null,
      stream: null,
      associatedRemoteMediaStreams: [],
      wantReceive: true
    };
    if (this.usingBundle && hasBundleTransport) {
      transceiver.iceTransport = this.transceivers[0].iceTransport;
      transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;
    } else {
      var transports = this._createIceAndDtlsTransports();
      transceiver.iceTransport = transports.iceTransport;
      transceiver.dtlsTransport = transports.dtlsTransport;
    }
    if (!doNotAdd) {
      this.transceivers.push(transceiver);
    }
    return transceiver;
  };

  RTCPeerConnection.prototype.addTrack = function(track, stream) {
    if (this._isClosed) {
      throw makeError('InvalidStateError',
          'Attempted to call addTrack on a closed peerconnection.');
    }

    var alreadyExists = this.transceivers.find(function(s) {
      return s.track === track;
    });

    if (alreadyExists) {
      throw makeError('InvalidAccessError', 'Track already exists.');
    }

    var transceiver;
    for (var i = 0; i < this.transceivers.length; i++) {
      if (!this.transceivers[i].track &&
          this.transceivers[i].kind === track.kind) {
        transceiver = this.transceivers[i];
      }
    }
    if (!transceiver) {
      transceiver = this._createTransceiver(track.kind);
    }

    this._maybeFireNegotiationNeeded();

    if (this.localStreams.indexOf(stream) === -1) {
      this.localStreams.push(stream);
    }

    transceiver.track = track;
    transceiver.stream = stream;
    transceiver.rtpSender = new window.RTCRtpSender(track,
        transceiver.dtlsTransport);
    return transceiver.rtpSender;
  };

  RTCPeerConnection.prototype.addStream = function(stream) {
    var pc = this;
    if (edgeVersion >= 15025) {
      stream.getTracks().forEach(function(track) {
        pc.addTrack(track, stream);
      });
    } else {
      // Clone is necessary for local demos mostly, attaching directly
      // to two different senders does not work (build 10547).
      // Fixed in 15025 (or earlier)
      var clonedStream = stream.clone();
      stream.getTracks().forEach(function(track, idx) {
        var clonedTrack = clonedStream.getTracks()[idx];
        track.addEventListener('enabled', function(event) {
          clonedTrack.enabled = event.enabled;
        });
      });
      clonedStream.getTracks().forEach(function(track) {
        pc.addTrack(track, clonedStream);
      });
    }
  };

  RTCPeerConnection.prototype.removeTrack = function(sender) {
    if (this._isClosed) {
      throw makeError('InvalidStateError',
          'Attempted to call removeTrack on a closed peerconnection.');
    }

    if (!(sender instanceof window.RTCRtpSender)) {
      throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +
          'does not implement interface RTCRtpSender.');
    }

    var transceiver = this.transceivers.find(function(t) {
      return t.rtpSender === sender;
    });

    if (!transceiver) {
      throw makeError('InvalidAccessError',
          'Sender was not created by this connection.');
    }
    var stream = transceiver.stream;

    transceiver.rtpSender.stop();
    transceiver.rtpSender = null;
    transceiver.track = null;
    transceiver.stream = null;

    // remove the stream from the set of local streams
    var localStreams = this.transceivers.map(function(t) {
      return t.stream;
    });
    if (localStreams.indexOf(stream) === -1 &&
        this.localStreams.indexOf(stream) > -1) {
      this.localStreams.splice(this.localStreams.indexOf(stream), 1);
    }

    this._maybeFireNegotiationNeeded();
  };

  RTCPeerConnection.prototype.removeStream = function(stream) {
    var pc = this;
    stream.getTracks().forEach(function(track) {
      var sender = pc.getSenders().find(function(s) {
        return s.track === track;
      });
      if (sender) {
        pc.removeTrack(sender);
      }
    });
  };

  RTCPeerConnection.prototype.getSenders = function() {
    return this.transceivers.filter(function(transceiver) {
      return !!transceiver.rtpSender;
    })
    .map(function(transceiver) {
      return transceiver.rtpSender;
    });
  };

  RTCPeerConnection.prototype.getReceivers = function() {
    return this.transceivers.filter(function(transceiver) {
      return !!transceiver.rtpReceiver;
    })
    .map(function(transceiver) {
      return transceiver.rtpReceiver;
    });
  };


  RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,
      usingBundle) {
    var pc = this;
    if (usingBundle && sdpMLineIndex > 0) {
      return this.transceivers[0].iceGatherer;
    } else if (this._iceGatherers.length) {
      return this._iceGatherers.shift();
    }
    var iceGatherer = new window.RTCIceGatherer({
      iceServers: this._config.iceServers,
      gatherPolicy: this._config.iceTransportPolicy
    });
    Object.defineProperty(iceGatherer, 'state',
        {value: 'new', writable: true}
    );

    this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];
    this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {
      var end = !event.candidate || Object.keys(event.candidate).length === 0;
      // polyfill since RTCIceGatherer.state is not implemented in
      // Edge 10547 yet.
      iceGatherer.state = end ? 'completed' : 'gathering';
      if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {
        pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);
      }
    };
    iceGatherer.addEventListener('localcandidate',
      this.transceivers[sdpMLineIndex].bufferCandidates);
    return iceGatherer;
  };

  // start gathering from an RTCIceGatherer.
  RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {
    var pc = this;
    var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
    if (iceGatherer.onlocalcandidate) {
      return;
    }
    var bufferedCandidateEvents =
      this.transceivers[sdpMLineIndex].bufferedCandidateEvents;
    this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;
    iceGatherer.removeEventListener('localcandidate',
      this.transceivers[sdpMLineIndex].bufferCandidates);
    iceGatherer.onlocalcandidate = function(evt) {
      if (pc.usingBundle && sdpMLineIndex > 0) {
        // if we know that we use bundle we can drop candidates with
        // ѕdpMLineIndex > 0. If we don't do this then our state gets
        // confused since we dispose the extra ice gatherer.
        return;
      }
      var event = new Event('icecandidate');
      event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};

      var cand = evt.candidate;
      // Edge emits an empty object for RTCIceCandidateComplete‥
      var end = !cand || Object.keys(cand).length === 0;
      if (end) {
        // polyfill since RTCIceGatherer.state is not implemented in
        // Edge 10547 yet.
        if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {
          iceGatherer.state = 'completed';
        }
      } else {
        if (iceGatherer.state === 'new') {
          iceGatherer.state = 'gathering';
        }
        // RTCIceCandidate doesn't have a component, needs to be added
        cand.component = 1;
        // also the usernameFragment. TODO: update SDP to take both variants.
        cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;

        var serializedCandidate = SDPUtils.writeCandidate(cand);
        event.candidate = Object.assign(event.candidate,
            SDPUtils.parseCandidate(serializedCandidate));

        event.candidate.candidate = serializedCandidate;
        event.candidate.toJSON = function() {
          return {
            candidate: event.candidate.candidate,
            sdpMid: event.candidate.sdpMid,
            sdpMLineIndex: event.candidate.sdpMLineIndex,
            usernameFragment: event.candidate.usernameFragment
          };
        };
      }

      // update local description.
      var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);
      if (!end) {
        sections[event.candidate.sdpMLineIndex] +=
            'a=' + event.candidate.candidate + '\r\n';
      } else {
        sections[event.candidate.sdpMLineIndex] +=
            'a=end-of-candidates\r\n';
      }
      pc._localDescription.sdp =
          SDPUtils.getDescription(pc._localDescription.sdp) +
          sections.join('');
      var complete = pc.transceivers.every(function(transceiver) {
        return transceiver.iceGatherer &&
            transceiver.iceGatherer.state === 'completed';
      });

      if (pc.iceGatheringState !== 'gathering') {
        pc.iceGatheringState = 'gathering';
        pc._emitGatheringStateChange();
      }

      // Emit candidate. Also emit null candidate when all gatherers are
      // complete.
      if (!end) {
        pc._dispatchEvent('icecandidate', event);
      }
      if (complete) {
        pc._dispatchEvent('icecandidate', new Event('icecandidate'));
        pc.iceGatheringState = 'complete';
        pc._emitGatheringStateChange();
      }
    };

    // emit already gathered candidates.
    window.setTimeout(function() {
      bufferedCandidateEvents.forEach(function(e) {
        iceGatherer.onlocalcandidate(e);
      });
    }, 0);
  };

  // Create ICE transport and DTLS transport.
  RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {
    var pc = this;
    var iceTransport = new window.RTCIceTransport(null);
    iceTransport.onicestatechange = function() {
      pc._updateIceConnectionState();
      pc._updateConnectionState();
    };

    var dtlsTransport = new window.RTCDtlsTransport(iceTransport);
    dtlsTransport.ondtlsstatechange = function() {
      pc._updateConnectionState();
    };
    dtlsTransport.onerror = function() {
      // onerror does not set state to failed by itself.
      Object.defineProperty(dtlsTransport, 'state',
          {value: 'failed', writable: true});
      pc._updateConnectionState();
    };

    return {
      iceTransport: iceTransport,
      dtlsTransport: dtlsTransport
    };
  };

  // Destroy ICE gatherer, ICE transport and DTLS transport.
  // Without triggering the callbacks.
  RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(
      sdpMLineIndex) {
    var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
    if (iceGatherer) {
      delete iceGatherer.onlocalcandidate;
      delete this.transceivers[sdpMLineIndex].iceGatherer;
    }
    var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;
    if (iceTransport) {
      delete iceTransport.onicestatechange;
      delete this.transceivers[sdpMLineIndex].iceTransport;
    }
    var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;
    if (dtlsTransport) {
      delete dtlsTransport.ondtlsstatechange;
      delete dtlsTransport.onerror;
      delete this.transceivers[sdpMLineIndex].dtlsTransport;
    }
  };

  // Start the RTP Sender and Receiver for a transceiver.
  RTCPeerConnection.prototype._transceive = function(transceiver,
      send, recv) {
    var params = getCommonCapabilities(transceiver.localCapabilities,
        transceiver.remoteCapabilities);
    if (send && transceiver.rtpSender) {
      params.encodings = transceiver.sendEncodingParameters;
      params.rtcp = {
        cname: SDPUtils.localCName,
        compound: transceiver.rtcpParameters.compound
      };
      if (transceiver.recvEncodingParameters.length) {
        params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;
      }
      transceiver.rtpSender.send(params);
    }
    if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {
      // remove RTX field in Edge 14942
      if (transceiver.kind === 'video'
          && transceiver.recvEncodingParameters
          && edgeVersion < 15019) {
        transceiver.recvEncodingParameters.forEach(function(p) {
          delete p.rtx;
        });
      }
      if (transceiver.recvEncodingParameters.length) {
        params.encodings = transceiver.recvEncodingParameters;
      } else {
        params.encodings = [{}];
      }
      params.rtcp = {
        compound: transceiver.rtcpParameters.compound
      };
      if (transceiver.rtcpParameters.cname) {
        params.rtcp.cname = transceiver.rtcpParameters.cname;
      }
      if (transceiver.sendEncodingParameters.length) {
        params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;
      }
      transceiver.rtpReceiver.receive(params);
    }
  };

  RTCPeerConnection.prototype.setLocalDescription = function(description) {
    var pc = this;

    // Note: pranswer is not supported.
    if (['offer', 'answer'].indexOf(description.type) === -1) {
      return Promise.reject(makeError('TypeError',
          'Unsupported type "' + description.type + '"'));
    }

    if (!isActionAllowedInSignalingState('setLocalDescription',
        description.type, pc.signalingState) || pc._isClosed) {
      return Promise.reject(makeError('InvalidStateError',
          'Can not set local ' + description.type +
          ' in state ' + pc.signalingState));
    }

    var sections;
    var sessionpart;
    if (description.type === 'offer') {
      // VERY limited support for SDP munging. Limited to:
      // * changing the order of codecs
      sections = SDPUtils.splitSections(description.sdp);
      sessionpart = sections.shift();
      sections.forEach(function(mediaSection, sdpMLineIndex) {
        var caps = SDPUtils.parseRtpParameters(mediaSection);
        pc.transceivers[sdpMLineIndex].localCapabilities = caps;
      });

      pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
        pc._gather(transceiver.mid, sdpMLineIndex);
      });
    } else if (description.type === 'answer') {
      sections = SDPUtils.splitSections(pc._remoteDescription.sdp);
      sessionpart = sections.shift();
      var isIceLite = SDPUtils.matchPrefix(sessionpart,
          'a=ice-lite').length > 0;
      sections.forEach(function(mediaSection, sdpMLineIndex) {
        var transceiver = pc.transceivers[sdpMLineIndex];
        var iceGatherer = transceiver.iceGatherer;
        var iceTransport = transceiver.iceTransport;
        var dtlsTransport = transceiver.dtlsTransport;
        var localCapabilities = transceiver.localCapabilities;
        var remoteCapabilities = transceiver.remoteCapabilities;

        // treat bundle-only as not-rejected.
        var rejected = SDPUtils.isRejected(mediaSection) &&
            SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;

        if (!rejected && !transceiver.rejected) {
          var remoteIceParameters = SDPUtils.getIceParameters(
              mediaSection, sessionpart);
          var remoteDtlsParameters = SDPUtils.getDtlsParameters(
              mediaSection, sessionpart);
          if (isIceLite) {
            remoteDtlsParameters.role = 'server';
          }

          if (!pc.usingBundle || sdpMLineIndex === 0) {
            pc._gather(transceiver.mid, sdpMLineIndex);
            if (iceTransport.state === 'new') {
              iceTransport.start(iceGatherer, remoteIceParameters,
                  isIceLite ? 'controlling' : 'controlled');
            }
            if (dtlsTransport.state === 'new') {
              dtlsTransport.start(remoteDtlsParameters);
            }
          }

          // Calculate intersection of capabilities.
          var params = getCommonCapabilities(localCapabilities,
              remoteCapabilities);

          // Start the RTCRtpSender. The RTCRtpReceiver for this
          // transceiver has already been started in setRemoteDescription.
          pc._transceive(transceiver,
              params.codecs.length > 0,
              false);
        }
      });
    }

    pc._localDescription = {
      type: description.type,
      sdp: description.sdp
    };
    if (description.type === 'offer') {
      pc._updateSignalingState('have-local-offer');
    } else {
      pc._updateSignalingState('stable');
    }

    return Promise.resolve();
  };

  RTCPeerConnection.prototype.setRemoteDescription = function(description) {
    var pc = this;

    // Note: pranswer is not supported.
    if (['offer', 'answer'].indexOf(description.type) === -1) {
      return Promise.reject(makeError('TypeError',
          'Unsupported type "' + description.type + '"'));
    }

    if (!isActionAllowedInSignalingState('setRemoteDescription',
        description.type, pc.signalingState) || pc._isClosed) {
      return Promise.reject(makeError('InvalidStateError',
          'Can not set remote ' + description.type +
          ' in state ' + pc.signalingState));
    }

    var streams = {};
    pc.remoteStreams.forEach(function(stream) {
      streams[stream.id] = stream;
    });
    var receiverList = [];
    var sections = SDPUtils.splitSections(description.sdp);
    var sessionpart = sections.shift();
    var isIceLite = SDPUtils.matchPrefix(sessionpart,
        'a=ice-lite').length > 0;
    var usingBundle = SDPUtils.matchPrefix(sessionpart,
        'a=group:BUNDLE ').length > 0;
    pc.usingBundle = usingBundle;
    var iceOptions = SDPUtils.matchPrefix(sessionpart,
        'a=ice-options:')[0];
    if (iceOptions) {
      pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')
          .indexOf('trickle') >= 0;
    } else {
      pc.canTrickleIceCandidates = false;
    }

    sections.forEach(function(mediaSection, sdpMLineIndex) {
      var lines = SDPUtils.splitLines(mediaSection);
      var kind = SDPUtils.getKind(mediaSection);
      // treat bundle-only as not-rejected.
      var rejected = SDPUtils.isRejected(mediaSection) &&
          SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
      var protocol = lines[0].substr(2).split(' ')[2];

      var direction = SDPUtils.getDirection(mediaSection, sessionpart);
      var remoteMsid = SDPUtils.parseMsid(mediaSection);

      var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();

      // Reject datachannels which are not implemented yet.
      if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' ||
          protocol === 'UDP/DTLS/SCTP'))) {
        // TODO: this is dangerous in the case where a non-rejected m-line
        //     becomes rejected.
        pc.transceivers[sdpMLineIndex] = {
          mid: mid,
          kind: kind,
          protocol: protocol,
          rejected: true
        };
        return;
      }

      if (!rejected && pc.transceivers[sdpMLineIndex] &&
          pc.transceivers[sdpMLineIndex].rejected) {
        // recycle a rejected transceiver.
        pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);
      }

      var transceiver;
      var iceGatherer;
      var iceTransport;
      var dtlsTransport;
      var rtpReceiver;
      var sendEncodingParameters;
      var recvEncodingParameters;
      var localCapabilities;

      var track;
      // FIXME: ensure the mediaSection has rtcp-mux set.
      var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);
      var remoteIceParameters;
      var remoteDtlsParameters;
      if (!rejected) {
        remoteIceParameters = SDPUtils.getIceParameters(mediaSection,
            sessionpart);
        remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,
            sessionpart);
        remoteDtlsParameters.role = 'client';
      }
      recvEncodingParameters =
          SDPUtils.parseRtpEncodingParameters(mediaSection);

      var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);

      var isComplete = SDPUtils.matchPrefix(mediaSection,
          'a=end-of-candidates', sessionpart).length > 0;
      var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')
          .map(function(cand) {
            return SDPUtils.parseCandidate(cand);
          })
          .filter(function(cand) {
            return cand.component === 1;
          });

      // Check if we can use BUNDLE and dispose transports.
      if ((description.type === 'offer' || description.type === 'answer') &&
          !rejected && usingBundle && sdpMLineIndex > 0 &&
          pc.transceivers[sdpMLineIndex]) {
        pc._disposeIceAndDtlsTransports(sdpMLineIndex);
        pc.transceivers[sdpMLineIndex].iceGatherer =
            pc.transceivers[0].iceGatherer;
        pc.transceivers[sdpMLineIndex].iceTransport =
            pc.transceivers[0].iceTransport;
        pc.transceivers[sdpMLineIndex].dtlsTransport =
            pc.transceivers[0].dtlsTransport;
        if (pc.transceivers[sdpMLineIndex].rtpSender) {
          pc.transceivers[sdpMLineIndex].rtpSender.setTransport(
              pc.transceivers[0].dtlsTransport);
        }
        if (pc.transceivers[sdpMLineIndex].rtpReceiver) {
          pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(
              pc.transceivers[0].dtlsTransport);
        }
      }
      if (description.type === 'offer' && !rejected) {
        transceiver = pc.transceivers[sdpMLineIndex] ||
            pc._createTransceiver(kind);
        transceiver.mid = mid;

        if (!transceiver.iceGatherer) {
          transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
              usingBundle);
        }

        if (cands.length && transceiver.iceTransport.state === 'new') {
          if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {
            transceiver.iceTransport.setRemoteCandidates(cands);
          } else {
            cands.forEach(function(candidate) {
              maybeAddCandidate(transceiver.iceTransport, candidate);
            });
          }
        }

        localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);

        // filter RTX until additional stuff needed for RTX is implemented
        // in adapter.js
        if (edgeVersion < 15019) {
          localCapabilities.codecs = localCapabilities.codecs.filter(
              function(codec) {
                return codec.name !== 'rtx';
              });
        }

        sendEncodingParameters = transceiver.sendEncodingParameters || [{
          ssrc: (2 * sdpMLineIndex + 2) * 1001
        }];

        // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
        var isNewTrack = false;
        if (direction === 'sendrecv' || direction === 'sendonly') {
          isNewTrack = !transceiver.rtpReceiver;
          rtpReceiver = transceiver.rtpReceiver ||
              new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);

          if (isNewTrack) {
            var stream;
            track = rtpReceiver.track;
            // FIXME: does not work with Plan B.
            if (remoteMsid && remoteMsid.stream === '-') {
              // no-op. a stream id of '-' means: no associated stream.
            } else if (remoteMsid) {
              if (!streams[remoteMsid.stream]) {
                streams[remoteMsid.stream] = new window.MediaStream();
                Object.defineProperty(streams[remoteMsid.stream], 'id', {
                  get: function() {
                    return remoteMsid.stream;
                  }
                });
              }
              Object.defineProperty(track, 'id', {
                get: function() {
                  return remoteMsid.track;
                }
              });
              stream = streams[remoteMsid.stream];
            } else {
              if (!streams.default) {
                streams.default = new window.MediaStream();
              }
              stream = streams.default;
            }
            if (stream) {
              addTrackToStreamAndFireEvent(track, stream);
              transceiver.associatedRemoteMediaStreams.push(stream);
            }
            receiverList.push([track, rtpReceiver, stream]);
          }
        } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {
          transceiver.associatedRemoteMediaStreams.forEach(function(s) {
            var nativeTrack = s.getTracks().find(function(t) {
              return t.id === transceiver.rtpReceiver.track.id;
            });
            if (nativeTrack) {
              removeTrackFromStreamAndFireEvent(nativeTrack, s);
            }
          });
          transceiver.associatedRemoteMediaStreams = [];
        }

        transceiver.localCapabilities = localCapabilities;
        transceiver.remoteCapabilities = remoteCapabilities;
        transceiver.rtpReceiver = rtpReceiver;
        transceiver.rtcpParameters = rtcpParameters;
        transceiver.sendEncodingParameters = sendEncodingParameters;
        transceiver.recvEncodingParameters = recvEncodingParameters;

        // Start the RTCRtpReceiver now. The RTPSender is started in
        // setLocalDescription.
        pc._transceive(pc.transceivers[sdpMLineIndex],
            false,
            isNewTrack);
      } else if (description.type === 'answer' && !rejected) {
        transceiver = pc.transceivers[sdpMLineIndex];
        iceGatherer = transceiver.iceGatherer;
        iceTransport = transceiver.iceTransport;
        dtlsTransport = transceiver.dtlsTransport;
        rtpReceiver = transceiver.rtpReceiver;
        sendEncodingParameters = transceiver.sendEncodingParameters;
        localCapabilities = transceiver.localCapabilities;

        pc.transceivers[sdpMLineIndex].recvEncodingParameters =
            recvEncodingParameters;
        pc.transceivers[sdpMLineIndex].remoteCapabilities =
            remoteCapabilities;
        pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;

        if (cands.length && iceTransport.state === 'new') {
          if ((isIceLite || isComplete) &&
              (!usingBundle || sdpMLineIndex === 0)) {
            iceTransport.setRemoteCandidates(cands);
          } else {
            cands.forEach(function(candidate) {
              maybeAddCandidate(transceiver.iceTransport, candidate);
            });
          }
        }

        if (!usingBundle || sdpMLineIndex === 0) {
          if (iceTransport.state === 'new') {
            iceTransport.start(iceGatherer, remoteIceParameters,
                'controlling');
          }
          if (dtlsTransport.state === 'new') {
            dtlsTransport.start(remoteDtlsParameters);
          }
        }

        // If the offer contained RTX but the answer did not,
        // remove RTX from sendEncodingParameters.
        var commonCapabilities = getCommonCapabilities(
          transceiver.localCapabilities,
          transceiver.remoteCapabilities);

        var hasRtx = commonCapabilities.codecs.filter(function(c) {
          return c.name.toLowerCase() === 'rtx';
        }).length;
        if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
          delete transceiver.sendEncodingParameters[0].rtx;
        }

        pc._transceive(transceiver,
            direction === 'sendrecv' || direction === 'recvonly',
            direction === 'sendrecv' || direction === 'sendonly');

        // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
        if (rtpReceiver &&
            (direction === 'sendrecv' || direction === 'sendonly')) {
          track = rtpReceiver.track;
          if (remoteMsid) {
            if (!streams[remoteMsid.stream]) {
              streams[remoteMsid.stream] = new window.MediaStream();
            }
            addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);
            receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);
          } else {
            if (!streams.default) {
              streams.default = new window.MediaStream();
            }
            addTrackToStreamAndFireEvent(track, streams.default);
            receiverList.push([track, rtpReceiver, streams.default]);
          }
        } else {
          // FIXME: actually the receiver should be created later.
          delete transceiver.rtpReceiver;
        }
      }
    });

    if (pc._dtlsRole === undefined) {
      pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';
    }

    pc._remoteDescription = {
      type: description.type,
      sdp: description.sdp
    };
    if (description.type === 'offer') {
      pc._updateSignalingState('have-remote-offer');
    } else {
      pc._updateSignalingState('stable');
    }
    Object.keys(streams).forEach(function(sid) {
      var stream = streams[sid];
      if (stream.getTracks().length) {
        if (pc.remoteStreams.indexOf(stream) === -1) {
          pc.remoteStreams.push(stream);
          var event = new Event('addstream');
          event.stream = stream;
          window.setTimeout(function() {
            pc._dispatchEvent('addstream', event);
          });
        }

        receiverList.forEach(function(item) {
          var track = item[0];
          var receiver = item[1];
          if (stream.id !== item[2].id) {
            return;
          }
          fireAddTrack(pc, track, receiver, [stream]);
        });
      }
    });
    receiverList.forEach(function(item) {
      if (item[2]) {
        return;
      }
      fireAddTrack(pc, item[0], item[1], []);
    });

    // check whether addIceCandidate({}) was called within four seconds after
    // setRemoteDescription.
    window.setTimeout(function() {
      if (!(pc && pc.transceivers)) {
        return;
      }
      pc.transceivers.forEach(function(transceiver) {
        if (transceiver.iceTransport &&
            transceiver.iceTransport.state === 'new' &&
            transceiver.iceTransport.getRemoteCandidates().length > 0) {
          console.warn('Timeout for addRemoteCandidate. Consider sending ' +
              'an end-of-candidates notification');
          transceiver.iceTransport.addRemoteCandidate({});
        }
      });
    }, 4000);

    return Promise.resolve();
  };

  RTCPeerConnection.prototype.close = function() {
    this.transceivers.forEach(function(transceiver) {
      /* not yet
      if (transceiver.iceGatherer) {
        transceiver.iceGatherer.close();
      }
      */
      if (transceiver.iceTransport) {
        transceiver.iceTransport.stop();
      }
      if (transceiver.dtlsTransport) {
        transceiver.dtlsTransport.stop();
      }
      if (transceiver.rtpSender) {
        transceiver.rtpSender.stop();
      }
      if (transceiver.rtpReceiver) {
        transceiver.rtpReceiver.stop();
      }
    });
    // FIXME: clean up tracks, local streams, remote streams, etc
    this._isClosed = true;
    this._updateSignalingState('closed');
  };

  // Update the signaling state.
  RTCPeerConnection.prototype._updateSignalingState = function(newState) {
    this.signalingState = newState;
    var event = new Event('signalingstatechange');
    this._dispatchEvent('signalingstatechange', event);
  };

  // Determine whether to fire the negotiationneeded event.
  RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {
    var pc = this;
    if (this.signalingState !== 'stable' || this.needNegotiation === true) {
      return;
    }
    this.needNegotiation = true;
    window.setTimeout(function() {
      if (pc.needNegotiation) {
        pc.needNegotiation = false;
        var event = new Event('negotiationneeded');
        pc._dispatchEvent('negotiationneeded', event);
      }
    }, 0);
  };

  // Update the ice connection state.
  RTCPeerConnection.prototype._updateIceConnectionState = function() {
    var newState;
    var states = {
      'new': 0,
      closed: 0,
      checking: 0,
      connected: 0,
      completed: 0,
      disconnected: 0,
      failed: 0
    };
    this.transceivers.forEach(function(transceiver) {
      if (transceiver.iceTransport && !transceiver.rejected) {
        states[transceiver.iceTransport.state]++;
      }
    });

    newState = 'new';
    if (states.failed > 0) {
      newState = 'failed';
    } else if (states.checking > 0) {
      newState = 'checking';
    } else if (states.disconnected > 0) {
      newState = 'disconnected';
    } else if (states.new > 0) {
      newState = 'new';
    } else if (states.connected > 0) {
      newState = 'connected';
    } else if (states.completed > 0) {
      newState = 'completed';
    }

    if (newState !== this.iceConnectionState) {
      this.iceConnectionState = newState;
      var event = new Event('iceconnectionstatechange');
      this._dispatchEvent('iceconnectionstatechange', event);
    }
  };

  // Update the connection state.
  RTCPeerConnection.prototype._updateConnectionState = function() {
    var newState;
    var states = {
      'new': 0,
      closed: 0,
      connecting: 0,
      connected: 0,
      completed: 0,
      disconnected: 0,
      failed: 0
    };
    this.transceivers.forEach(function(transceiver) {
      if (transceiver.iceTransport && transceiver.dtlsTransport &&
          !transceiver.rejected) {
        states[transceiver.iceTransport.state]++;
        states[transceiver.dtlsTransport.state]++;
      }
    });
    // ICETransport.completed and connected are the same for this purpose.
    states.connected += states.completed;

    newState = 'new';
    if (states.failed > 0) {
      newState = 'failed';
    } else if (states.connecting > 0) {
      newState = 'connecting';
    } else if (states.disconnected > 0) {
      newState = 'disconnected';
    } else if (states.new > 0) {
      newState = 'new';
    } else if (states.connected > 0) {
      newState = 'connected';
    }

    if (newState !== this.connectionState) {
      this.connectionState = newState;
      var event = new Event('connectionstatechange');
      this._dispatchEvent('connectionstatechange', event);
    }
  };

  RTCPeerConnection.prototype.createOffer = function() {
    var pc = this;

    if (pc._isClosed) {
      return Promise.reject(makeError('InvalidStateError',
          'Can not call createOffer after close'));
    }

    var numAudioTracks = pc.transceivers.filter(function(t) {
      return t.kind === 'audio';
    }).length;
    var numVideoTracks = pc.transceivers.filter(function(t) {
      return t.kind === 'video';
    }).length;

    // Determine number of audio and video tracks we need to send/recv.
    var offerOptions = arguments[0];
    if (offerOptions) {
      // Reject Chrome legacy constraints.
      if (offerOptions.mandatory || offerOptions.optional) {
        throw new TypeError(
            'Legacy mandatory/optional constraints not supported.');
      }
      if (offerOptions.offerToReceiveAudio !== undefined) {
        if (offerOptions.offerToReceiveAudio === true) {
          numAudioTracks = 1;
        } else if (offerOptions.offerToReceiveAudio === false) {
          numAudioTracks = 0;
        } else {
          numAudioTracks = offerOptions.offerToReceiveAudio;
        }
      }
      if (offerOptions.offerToReceiveVideo !== undefined) {
        if (offerOptions.offerToReceiveVideo === true) {
          numVideoTracks = 1;
        } else if (offerOptions.offerToReceiveVideo === false) {
          numVideoTracks = 0;
        } else {
          numVideoTracks = offerOptions.offerToReceiveVideo;
        }
      }
    }

    pc.transceivers.forEach(function(transceiver) {
      if (transceiver.kind === 'audio') {
        numAudioTracks--;
        if (numAudioTracks < 0) {
          transceiver.wantReceive = false;
        }
      } else if (transceiver.kind === 'video') {
        numVideoTracks--;
        if (numVideoTracks < 0) {
          transceiver.wantReceive = false;
        }
      }
    });

    // Create M-lines for recvonly streams.
    while (numAudioTracks > 0 || numVideoTracks > 0) {
      if (numAudioTracks > 0) {
        pc._createTransceiver('audio');
        numAudioTracks--;
      }
      if (numVideoTracks > 0) {
        pc._createTransceiver('video');
        numVideoTracks--;
      }
    }

    var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
        pc._sdpSessionVersion++);
    pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
      // For each track, create an ice gatherer, ice transport,
      // dtls transport, potentially rtpsender and rtpreceiver.
      var track = transceiver.track;
      var kind = transceiver.kind;
      var mid = transceiver.mid || SDPUtils.generateIdentifier();
      transceiver.mid = mid;

      if (!transceiver.iceGatherer) {
        transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
            pc.usingBundle);
      }

      var localCapabilities = window.RTCRtpSender.getCapabilities(kind);
      // filter RTX until additional stuff needed for RTX is implemented
      // in adapter.js
      if (edgeVersion < 15019) {
        localCapabilities.codecs = localCapabilities.codecs.filter(
            function(codec) {
              return codec.name !== 'rtx';
            });
      }
      localCapabilities.codecs.forEach(function(codec) {
        // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552
        // by adding level-asymmetry-allowed=1
        if (codec.name === 'H264' &&
            codec.parameters['level-asymmetry-allowed'] === undefined) {
          codec.parameters['level-asymmetry-allowed'] = '1';
        }

        // for subsequent offers, we might have to re-use the payload
        // type of the last offer.
        if (transceiver.remoteCapabilities &&
            transceiver.remoteCapabilities.codecs) {
          transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {
            if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&
                codec.clockRate === remoteCodec.clockRate) {
              codec.preferredPayloadType = remoteCodec.payloadType;
            }
          });
        }
      });
      localCapabilities.headerExtensions.forEach(function(hdrExt) {
        var remoteExtensions = transceiver.remoteCapabilities &&
            transceiver.remoteCapabilities.headerExtensions || [];
        remoteExtensions.forEach(function(rHdrExt) {
          if (hdrExt.uri === rHdrExt.uri) {
            hdrExt.id = rHdrExt.id;
          }
        });
      });

      // generate an ssrc now, to be used later in rtpSender.send
      var sendEncodingParameters = transceiver.sendEncodingParameters || [{
        ssrc: (2 * sdpMLineIndex + 1) * 1001
      }];
      if (track) {
        // add RTX
        if (edgeVersion >= 15019 && kind === 'video' &&
            !sendEncodingParameters[0].rtx) {
          sendEncodingParameters[0].rtx = {
            ssrc: sendEncodingParameters[0].ssrc + 1
          };
        }
      }

      if (transceiver.wantReceive) {
        transceiver.rtpReceiver = new window.RTCRtpReceiver(
            transceiver.dtlsTransport, kind);
      }

      transceiver.localCapabilities = localCapabilities;
      transceiver.sendEncodingParameters = sendEncodingParameters;
    });

    // always offer BUNDLE and dispose on return if not supported.
    if (pc._config.bundlePolicy !== 'max-compat') {
      sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
        return t.mid;
      }).join(' ') + '\r\n';
    }
    sdp += 'a=ice-options:trickle\r\n';

    pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
      sdp += writeMediaSection(transceiver, transceiver.localCapabilities,
          'offer', transceiver.stream, pc._dtlsRole);
      sdp += 'a=rtcp-rsize\r\n';

      if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&
          (sdpMLineIndex === 0 || !pc.usingBundle)) {
        transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {
          cand.component = 1;
          sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n';
        });

        if (transceiver.iceGatherer.state === 'completed') {
          sdp += 'a=end-of-candidates\r\n';
        }
      }
    });

    var desc = new window.RTCSessionDescription({
      type: 'offer',
      sdp: sdp
    });
    return Promise.resolve(desc);
  };

  RTCPeerConnection.prototype.createAnswer = function() {
    var pc = this;

    if (pc._isClosed) {
      return Promise.reject(makeError('InvalidStateError',
          'Can not call createAnswer after close'));
    }

    if (!(pc.signalingState === 'have-remote-offer' ||
        pc.signalingState === 'have-local-pranswer')) {
      return Promise.reject(makeError('InvalidStateError',
          'Can not call createAnswer in signalingState ' + pc.signalingState));
    }

    var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
        pc._sdpSessionVersion++);
    if (pc.usingBundle) {
      sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
        return t.mid;
      }).join(' ') + '\r\n';
    }
    sdp += 'a=ice-options:trickle\r\n';

    var mediaSectionsInOffer = SDPUtils.getMediaSections(
        pc._remoteDescription.sdp).length;
    pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
      if (sdpMLineIndex + 1 > mediaSectionsInOffer) {
        return;
      }
      if (transceiver.rejected) {
        if (transceiver.kind === 'application') {
          if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt
            sdp += 'm=application 0 DTLS/SCTP 5000\r\n';
          } else {
            sdp += 'm=application 0 ' + transceiver.protocol +
                ' webrtc-datachannel\r\n';
          }
        } else if (transceiver.kind === 'audio') {
          sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' +
              'a=rtpmap:0 PCMU/8000\r\n';
        } else if (transceiver.kind === 'video') {
          sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' +
              'a=rtpmap:120 VP8/90000\r\n';
        }
        sdp += 'c=IN IP4 0.0.0.0\r\n' +
            'a=inactive\r\n' +
            'a=mid:' + transceiver.mid + '\r\n';
        return;
      }

      // FIXME: look at direction.
      if (transceiver.stream) {
        var localTrack;
        if (transceiver.kind === 'audio') {
          localTrack = transceiver.stream.getAudioTracks()[0];
        } else if (transceiver.kind === 'video') {
          localTrack = transceiver.stream.getVideoTracks()[0];
        }
        if (localTrack) {
          // add RTX
          if (edgeVersion >= 15019 && transceiver.kind === 'video' &&
              !transceiver.sendEncodingParameters[0].rtx) {
            transceiver.sendEncodingParameters[0].rtx = {
              ssrc: transceiver.sendEncodingParameters[0].ssrc + 1
            };
          }
        }
      }

      // Calculate intersection of capabilities.
      var commonCapabilities = getCommonCapabilities(
          transceiver.localCapabilities,
          transceiver.remoteCapabilities);

      var hasRtx = commonCapabilities.codecs.filter(function(c) {
        return c.name.toLowerCase() === 'rtx';
      }).length;
      if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
        delete transceiver.sendEncodingParameters[0].rtx;
      }

      sdp += writeMediaSection(transceiver, commonCapabilities,
          'answer', transceiver.stream, pc._dtlsRole);
      if (transceiver.rtcpParameters &&
          transceiver.rtcpParameters.reducedSize) {
        sdp += 'a=rtcp-rsize\r\n';
      }
    });

    var desc = new window.RTCSessionDescription({
      type: 'answer',
      sdp: sdp
    });
    return Promise.resolve(desc);
  };

  RTCPeerConnection.prototype.addIceCandidate = function(candidate) {
    var pc = this;
    var sections;
    if (candidate && !(candidate.sdpMLineIndex !== undefined ||
        candidate.sdpMid)) {
      return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));
    }

    // TODO: needs to go into ops queue.
    return new Promise(function(resolve, reject) {
      if (!pc._remoteDescription) {
        return reject(makeError('InvalidStateError',
            'Can not add ICE candidate without a remote description'));
      } else if (!candidate || candidate.candidate === '') {
        for (var j = 0; j < pc.transceivers.length; j++) {
          if (pc.transceivers[j].rejected) {
            continue;
          }
          pc.transceivers[j].iceTransport.addRemoteCandidate({});
          sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
          sections[j] += 'a=end-of-candidates\r\n';
          pc._remoteDescription.sdp =
              SDPUtils.getDescription(pc._remoteDescription.sdp) +
              sections.join('');
          if (pc.usingBundle) {
            break;
          }
        }
      } else {
        var sdpMLineIndex = candidate.sdpMLineIndex;
        if (candidate.sdpMid) {
          for (var i = 0; i < pc.transceivers.length; i++) {
            if (pc.transceivers[i].mid === candidate.sdpMid) {
              sdpMLineIndex = i;
              break;
            }
          }
        }
        var transceiver = pc.transceivers[sdpMLineIndex];
        if (transceiver) {
          if (transceiver.rejected) {
            return resolve();
          }
          var cand = Object.keys(candidate.candidate).length > 0 ?
              SDPUtils.parseCandidate(candidate.candidate) : {};
          // Ignore Chrome's invalid candidates since Edge does not like them.
          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {
            return resolve();
          }
          // Ignore RTCP candidates, we assume RTCP-MUX.
          if (cand.component && cand.component !== 1) {
            return resolve();
          }
          // when using bundle, avoid adding candidates to the wrong
          // ice transport. And avoid adding candidates added in the SDP.
          if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&
              transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {
            if (!maybeAddCandidate(transceiver.iceTransport, cand)) {
              return reject(makeError('OperationError',
                  'Can not add ICE candidate'));
            }
          }

          // update the remoteDescription.
          var candidateString = candidate.candidate.trim();
          if (candidateString.indexOf('a=') === 0) {
            candidateString = candidateString.substr(2);
          }
          sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
          sections[sdpMLineIndex] += 'a=' +
              (cand.type ? candidateString : 'end-of-candidates')
              + '\r\n';
          pc._remoteDescription.sdp =
              SDPUtils.getDescription(pc._remoteDescription.sdp) +
              sections.join('');
        } else {
          return reject(makeError('OperationError',
              'Can not add ICE candidate'));
        }
      }
      resolve();
    });
  };

  RTCPeerConnection.prototype.getStats = function(selector) {
    if (selector && selector instanceof window.MediaStreamTrack) {
      var senderOrReceiver = null;
      this.transceivers.forEach(function(transceiver) {
        if (transceiver.rtpSender &&
            transceiver.rtpSender.track === selector) {
          senderOrReceiver = transceiver.rtpSender;
        } else if (transceiver.rtpReceiver &&
            transceiver.rtpReceiver.track === selector) {
          senderOrReceiver = transceiver.rtpReceiver;
        }
      });
      if (!senderOrReceiver) {
        throw makeError('InvalidAccessError', 'Invalid selector.');
      }
      return senderOrReceiver.getStats();
    }

    var promises = [];
    this.transceivers.forEach(function(transceiver) {
      ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',
          'dtlsTransport'].forEach(function(method) {
            if (transceiver[method]) {
              promises.push(transceiver[method].getStats());
            }
          });
    });
    return Promise.all(promises).then(function(allStats) {
      var results = new Map();
      allStats.forEach(function(stats) {
        stats.forEach(function(stat) {
          results.set(stat.id, stat);
        });
      });
      return results;
    });
  };

  // fix low-level stat names and return Map instead of object.
  var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer',
    'RTCIceTransport', 'RTCDtlsTransport'];
  ortcObjects.forEach(function(ortcObjectName) {
    var obj = window[ortcObjectName];
    if (obj && obj.prototype && obj.prototype.getStats) {
      var nativeGetstats = obj.prototype.getStats;
      obj.prototype.getStats = function() {
        return nativeGetstats.apply(this)
        .then(function(nativeStats) {
          var mapStats = new Map();
          Object.keys(nativeStats).forEach(function(id) {
            nativeStats[id].type = fixStatsType(nativeStats[id]);
            mapStats.set(id, nativeStats[id]);
          });
          return mapStats;
        });
      };
    }
  });

  // legacy callback shims. Should be moved to adapter.js some days.
  var methods = ['createOffer', 'createAnswer'];
  methods.forEach(function(method) {
    var nativeMethod = RTCPeerConnection.prototype[method];
    RTCPeerConnection.prototype[method] = function() {
      var args = arguments;
      if (typeof args[0] === 'function' ||
          typeof args[1] === 'function') { // legacy
        return nativeMethod.apply(this, [arguments[2]])
        .then(function(description) {
          if (typeof args[0] === 'function') {
            args[0].apply(null, [description]);
          }
        }, function(error) {
          if (typeof args[1] === 'function') {
            args[1].apply(null, [error]);
          }
        });
      }
      return nativeMethod.apply(this, arguments);
    };
  });

  methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];
  methods.forEach(function(method) {
    var nativeMethod = RTCPeerConnection.prototype[method];
    RTCPeerConnection.prototype[method] = function() {
      var args = arguments;
      if (typeof args[1] === 'function' ||
          typeof args[2] === 'function') { // legacy
        return nativeMethod.apply(this, arguments)
        .then(function() {
          if (typeof args[1] === 'function') {
            args[1].apply(null);
          }
        }, function(error) {
          if (typeof args[2] === 'function') {
            args[2].apply(null, [error]);
          }
        });
      }
      return nativeMethod.apply(this, arguments);
    };
  });

  // getStats is special. It doesn't have a spec legacy method yet we support
  // getStats(something, cb) without error callbacks.
  ['getStats'].forEach(function(method) {
    var nativeMethod = RTCPeerConnection.prototype[method];
    RTCPeerConnection.prototype[method] = function() {
      var args = arguments;
      if (typeof args[1] === 'function') {
        return nativeMethod.apply(this, arguments)
        .then(function() {
          if (typeof args[1] === 'function') {
            args[1].apply(null);
          }
        });
      }
      return nativeMethod.apply(this, arguments);
    };
  });

  return RTCPeerConnection;
};

},{"sdp":175}],173:[function(require,module,exports){
/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.prototype = Object.create(Buffer.prototype)

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":47}],174:[function(require,module,exports){
(function (process){(function (){
/* eslint-disable node/no-deprecated-api */

'use strict'

var buffer = require('buffer')
var Buffer = buffer.Buffer

var safer = {}

var key

for (key in buffer) {
  if (!buffer.hasOwnProperty(key)) continue
  if (key === 'SlowBuffer' || key === 'Buffer') continue
  safer[key] = buffer[key]
}

var Safer = safer.Buffer = {}
for (key in Buffer) {
  if (!Buffer.hasOwnProperty(key)) continue
  if (key === 'allocUnsafe' || key === 'allocUnsafeSlow') continue
  Safer[key] = Buffer[key]
}

safer.Buffer.prototype = Buffer.prototype

if (!Safer.from || Safer.from === Uint8Array.from) {
  Safer.from = function (value, encodingOrOffset, length) {
    if (typeof value === 'number') {
      throw new TypeError('The "value" argument must not be of type number. Received type ' + typeof value)
    }
    if (value && typeof value.length === 'undefined') {
      throw new TypeError('The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type ' + typeof value)
    }
    return Buffer(value, encodingOrOffset, length)
  }
}

if (!Safer.alloc) {
  Safer.alloc = function (size, fill, encoding) {
    if (typeof size !== 'number') {
      throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size)
    }
    if (size < 0 || size >= 2 * (1 << 30)) {
      throw new RangeError('The value "' + size + '" is invalid for option "size"')
    }
    var buf = Buffer(size)
    if (!fill || fill.length === 0) {
      buf.fill(0)
    } else if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
    return buf
  }
}

if (!safer.kStringMaxLength) {
  try {
    safer.kStringMaxLength = process.binding('buffer').kStringMaxLength
  } catch (e) {
    // we can't determine kStringMaxLength in environments where process.binding
    // is unsupported, so let's not set it
  }
}

if (!safer.constants) {
  safer.constants = {
    MAX_LENGTH: safer.kMaxLength
  }
  if (safer.kStringMaxLength) {
    safer.constants.MAX_STRING_LENGTH = safer.kStringMaxLength
  }
}

module.exports = safer

}).call(this)}).call(this,require('_process'))
},{"_process":152,"buffer":47}],175:[function(require,module,exports){
/* eslint-env node */
'use strict';

// SDP helpers.
var SDPUtils = {};

// Generate an alphanumeric identifier for cname or mids.
// TODO: use UUIDs instead? https://gist.github.com/jed/982883
SDPUtils.generateIdentifier = function() {
  return Math.random().toString(36).substr(2, 10);
};

// The RTCP CNAME used by all peerconnections from the same JS.
SDPUtils.localCName = SDPUtils.generateIdentifier();

// Splits SDP into lines, dealing with both CRLF and LF.
SDPUtils.splitLines = function(blob) {
  return blob.trim().split('\n').map(function(line) {
    return line.trim();
  });
};
// Splits SDP into sessionpart and mediasections. Ensures CRLF.
SDPUtils.splitSections = function(blob) {
  var parts = blob.split('\nm=');
  return parts.map(function(part, index) {
    return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
  });
};

// returns the session description.
SDPUtils.getDescription = function(blob) {
  var sections = SDPUtils.splitSections(blob);
  return sections && sections[0];
};

// returns the individual media sections.
SDPUtils.getMediaSections = function(blob) {
  var sections = SDPUtils.splitSections(blob);
  sections.shift();
  return sections;
};

// Returns lines that start with a certain prefix.
SDPUtils.matchPrefix = function(blob, prefix) {
  return SDPUtils.splitLines(blob).filter(function(line) {
    return line.indexOf(prefix) === 0;
  });
};

// Parses an ICE candidate line. Sample input:
// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
// rport 55996"
SDPUtils.parseCandidate = function(line) {
  var parts;
  // Parse both variants.
  if (line.indexOf('a=candidate:') === 0) {
    parts = line.substring(12).split(' ');
  } else {
    parts = line.substring(10).split(' ');
  }

  var candidate = {
    foundation: parts[0],
    component: parseInt(parts[1], 10),
    protocol: parts[2].toLowerCase(),
    priority: parseInt(parts[3], 10),
    ip: parts[4],
    address: parts[4], // address is an alias for ip.
    port: parseInt(parts[5], 10),
    // skip parts[6] == 'typ'
    type: parts[7]
  };

  for (var i = 8; i < parts.length; i += 2) {
    switch (parts[i]) {
      case 'raddr':
        candidate.relatedAddress = parts[i + 1];
        break;
      case 'rport':
        candidate.relatedPort = parseInt(parts[i + 1], 10);
        break;
      case 'tcptype':
        candidate.tcpType = parts[i + 1];
        break;
      case 'ufrag':
        candidate.ufrag = parts[i + 1]; // for backward compability.
        candidate.usernameFragment = parts[i + 1];
        break;
      default: // extension handling, in particular ufrag
        candidate[parts[i]] = parts[i + 1];
        break;
    }
  }
  return candidate;
};

// Translates a candidate object into SDP candidate attribute.
SDPUtils.writeCandidate = function(candidate) {
  var sdp = [];
  sdp.push(candidate.foundation);
  sdp.push(candidate.component);
  sdp.push(candidate.protocol.toUpperCase());
  sdp.push(candidate.priority);
  sdp.push(candidate.address || candidate.ip);
  sdp.push(candidate.port);

  var type = candidate.type;
  sdp.push('typ');
  sdp.push(type);
  if (type !== 'host' && candidate.relatedAddress &&
      candidate.relatedPort) {
    sdp.push('raddr');
    sdp.push(candidate.relatedAddress);
    sdp.push('rport');
    sdp.push(candidate.relatedPort);
  }
  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
    sdp.push('tcptype');
    sdp.push(candidate.tcpType);
  }
  if (candidate.usernameFragment || candidate.ufrag) {
    sdp.push('ufrag');
    sdp.push(candidate.usernameFragment || candidate.ufrag);
  }
  return 'candidate:' + sdp.join(' ');
};

// Parses an ice-options line, returns an array of option tags.
// a=ice-options:foo bar
SDPUtils.parseIceOptions = function(line) {
  return line.substr(14).split(' ');
};

// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:
// a=rtpmap:111 opus/48000/2
SDPUtils.parseRtpMap = function(line) {
  var parts = line.substr(9).split(' ');
  var parsed = {
    payloadType: parseInt(parts.shift(), 10) // was: id
  };

  parts = parts[0].split('/');

  parsed.name = parts[0];
  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
  parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
  // legacy alias, got renamed back to channels in ORTC.
  parsed.numChannels = parsed.channels;
  return parsed;
};

// Generate an a=rtpmap line from RTCRtpCodecCapability or
// RTCRtpCodecParameters.
SDPUtils.writeRtpMap = function(codec) {
  var pt = codec.payloadType;
  if (codec.preferredPayloadType !== undefined) {
    pt = codec.preferredPayloadType;
  }
  var channels = codec.channels || codec.numChannels || 1;
  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +
      (channels !== 1 ? '/' + channels : '') + '\r\n';
};

// Parses an a=extmap line (headerextension from RFC 5285). Sample input:
// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
SDPUtils.parseExtmap = function(line) {
  var parts = line.substr(9).split(' ');
  return {
    id: parseInt(parts[0], 10),
    direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
    uri: parts[1]
  };
};

// Generates a=extmap line from RTCRtpHeaderExtensionParameters or
// RTCRtpHeaderExtension.
SDPUtils.writeExtmap = function(headerExtension) {
  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +
      (headerExtension.direction && headerExtension.direction !== 'sendrecv'
        ? '/' + headerExtension.direction
        : '') +
      ' ' + headerExtension.uri + '\r\n';
};

// Parses an ftmp line, returns dictionary. Sample input:
// a=fmtp:96 vbr=on;cng=on
// Also deals with vbr=on; cng=on
SDPUtils.parseFmtp = function(line) {
  var parsed = {};
  var kv;
  var parts = line.substr(line.indexOf(' ') + 1).split(';');
  for (var j = 0; j < parts.length; j++) {
    kv = parts[j].trim().split('=');
    parsed[kv[0].trim()] = kv[1];
  }
  return parsed;
};

// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
SDPUtils.writeFmtp = function(codec) {
  var line = '';
  var pt = codec.payloadType;
  if (codec.preferredPayloadType !== undefined) {
    pt = codec.preferredPayloadType;
  }
  if (codec.parameters && Object.keys(codec.parameters).length) {
    var params = [];
    Object.keys(codec.parameters).forEach(function(param) {
      if (codec.parameters[param]) {
        params.push(param + '=' + codec.parameters[param]);
      } else {
        params.push(param);
      }
    });
    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
  }
  return line;
};

// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
// a=rtcp-fb:98 nack rpsi
SDPUtils.parseRtcpFb = function(line) {
  var parts = line.substr(line.indexOf(' ') + 1).split(' ');
  return {
    type: parts.shift(),
    parameter: parts.join(' ')
  };
};
// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
SDPUtils.writeRtcpFb = function(codec) {
  var lines = '';
  var pt = codec.payloadType;
  if (codec.preferredPayloadType !== undefined) {
    pt = codec.preferredPayloadType;
  }
  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
    // FIXME: special handling for trr-int?
    codec.rtcpFeedback.forEach(function(fb) {
      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +
      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +
          '\r\n';
    });
  }
  return lines;
};

// Parses an RFC 5576 ssrc media attribute. Sample input:
// a=ssrc:3735928559 cname:something
SDPUtils.parseSsrcMedia = function(line) {
  var sp = line.indexOf(' ');
  var parts = {
    ssrc: parseInt(line.substr(7, sp - 7), 10)
  };
  var colon = line.indexOf(':', sp);
  if (colon > -1) {
    parts.attribute = line.substr(sp + 1, colon - sp - 1);
    parts.value = line.substr(colon + 1);
  } else {
    parts.attribute = line.substr(sp + 1);
  }
  return parts;
};

SDPUtils.parseSsrcGroup = function(line) {
  var parts = line.substr(13).split(' ');
  return {
    semantics: parts.shift(),
    ssrcs: parts.map(function(ssrc) {
      return parseInt(ssrc, 10);
    })
  };
};

// Extracts the MID (RFC 5888) from a media section.
// returns the MID or undefined if no mid line was found.
SDPUtils.getMid = function(mediaSection) {
  var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
  if (mid) {
    return mid.substr(6);
  }
};

SDPUtils.parseFingerprint = function(line) {
  var parts = line.substr(14).split(' ');
  return {
    algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
    value: parts[1]
  };
};

// Extracts DTLS parameters from SDP media section or sessionpart.
// FIXME: for consistency with other functions this should only
//   get the fingerprint line as input. See also getIceParameters.
SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {
  var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
    'a=fingerprint:');
  // Note: a=setup line is ignored since we use the 'auto' role.
  // Note2: 'algorithm' is not case sensitive except in Edge.
  return {
    role: 'auto',
    fingerprints: lines.map(SDPUtils.parseFingerprint)
  };
};

// Serializes DTLS parameters to SDP.
SDPUtils.writeDtlsParameters = function(params, setupType) {
  var sdp = 'a=setup:' + setupType + '\r\n';
  params.fingerprints.forEach(function(fp) {
    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
  });
  return sdp;
};

// Parses a=crypto lines into
//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members
SDPUtils.parseCryptoLine = function(line) {
  var parts = line.substr(9).split(' ');
  return {
    tag: parseInt(parts[0], 10),
    cryptoSuite: parts[1],
    keyParams: parts[2],
    sessionParams: parts.slice(3),
  };
};

SDPUtils.writeCryptoLine = function(parameters) {
  return 'a=crypto:' + parameters.tag + ' ' +
    parameters.cryptoSuite + ' ' +
    (typeof parameters.keyParams === 'object'
      ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)
      : parameters.keyParams) +
    (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +
    '\r\n';
};

// Parses the crypto key parameters into
//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*
SDPUtils.parseCryptoKeyParams = function(keyParams) {
  if (keyParams.indexOf('inline:') !== 0) {
    return null;
  }
  var parts = keyParams.substr(7).split('|');
  return {
    keyMethod: 'inline',
    keySalt: parts[0],
    lifeTime: parts[1],
    mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,
    mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,
  };
};

SDPUtils.writeCryptoKeyParams = function(keyParams) {
  return keyParams.keyMethod + ':'
    + keyParams.keySalt +
    (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +
    (keyParams.mkiValue && keyParams.mkiLength
      ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength
      : '');
};

// Extracts all SDES paramters.
SDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {
  var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
    'a=crypto:');
  return lines.map(SDPUtils.parseCryptoLine);
};

// Parses ICE information from SDP media section or sessionpart.
// FIXME: for consistency with other functions this should only
//   get the ice-ufrag and ice-pwd lines as input.
SDPUtils.getIceParameters = function(mediaSection, sessionpart) {
  var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,
    'a=ice-ufrag:')[0];
  var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,
    'a=ice-pwd:')[0];
  if (!(ufrag && pwd)) {
    return null;
  }
  return {
    usernameFragment: ufrag.substr(12),
    password: pwd.substr(10),
  };
};

// Serializes ICE parameters to SDP.
SDPUtils.writeIceParameters = function(params) {
  return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' +
      'a=ice-pwd:' + params.password + '\r\n';
};

// Parses the SDP media section and returns RTCRtpParameters.
SDPUtils.parseRtpParameters = function(mediaSection) {
  var description = {
    codecs: [],
    headerExtensions: [],
    fecMechanisms: [],
    rtcp: []
  };
  var lines = SDPUtils.splitLines(mediaSection);
  var mline = lines[0].split(' ');
  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]
    var pt = mline[i];
    var rtpmapline = SDPUtils.matchPrefix(
      mediaSection, 'a=rtpmap:' + pt + ' ')[0];
    if (rtpmapline) {
      var codec = SDPUtils.parseRtpMap(rtpmapline);
      var fmtps = SDPUtils.matchPrefix(
        mediaSection, 'a=fmtp:' + pt + ' ');
      // Only the first a=fmtp:<pt> is considered.
      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
      codec.rtcpFeedback = SDPUtils.matchPrefix(
        mediaSection, 'a=rtcp-fb:' + pt + ' ')
        .map(SDPUtils.parseRtcpFb);
      description.codecs.push(codec);
      // parse FEC mechanisms from rtpmap lines.
      switch (codec.name.toUpperCase()) {
        case 'RED':
        case 'ULPFEC':
          description.fecMechanisms.push(codec.name.toUpperCase());
          break;
        default: // only RED and ULPFEC are recognized as FEC mechanisms.
          break;
      }
    }
  }
  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {
    description.headerExtensions.push(SDPUtils.parseExtmap(line));
  });
  // FIXME: parse rtcp.
  return description;
};

// Generates parts of the SDP media section describing the capabilities /
// parameters.
SDPUtils.writeRtpDescription = function(kind, caps) {
  var sdp = '';

  // Build the mline.
  sdp += 'm=' + kind + ' ';
  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
  sdp += ' UDP/TLS/RTP/SAVPF ';
  sdp += caps.codecs.map(function(codec) {
    if (codec.preferredPayloadType !== undefined) {
      return codec.preferredPayloadType;
    }
    return codec.payloadType;
  }).join(' ') + '\r\n';

  sdp += 'c=IN IP4 0.0.0.0\r\n';
  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';

  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
  caps.codecs.forEach(function(codec) {
    sdp += SDPUtils.writeRtpMap(codec);
    sdp += SDPUtils.writeFmtp(codec);
    sdp += SDPUtils.writeRtcpFb(codec);
  });
  var maxptime = 0;
  caps.codecs.forEach(function(codec) {
    if (codec.maxptime > maxptime) {
      maxptime = codec.maxptime;
    }
  });
  if (maxptime > 0) {
    sdp += 'a=maxptime:' + maxptime + '\r\n';
  }
  sdp += 'a=rtcp-mux\r\n';

  if (caps.headerExtensions) {
    caps.headerExtensions.forEach(function(extension) {
      sdp += SDPUtils.writeExtmap(extension);
    });
  }
  // FIXME: write fecMechanisms.
  return sdp;
};

// Parses the SDP media section and returns an array of
// RTCRtpEncodingParameters.
SDPUtils.parseRtpEncodingParameters = function(mediaSection) {
  var encodingParameters = [];
  var description = SDPUtils.parseRtpParameters(mediaSection);
  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;

  // filter a=ssrc:... cname:, ignore PlanB-msid
  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
    .map(function(line) {
      return SDPUtils.parseSsrcMedia(line);
    })
    .filter(function(parts) {
      return parts.attribute === 'cname';
    });
  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
  var secondarySsrc;

  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')
    .map(function(line) {
      var parts = line.substr(17).split(' ');
      return parts.map(function(part) {
        return parseInt(part, 10);
      });
    });
  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
    secondarySsrc = flows[0][1];
  }

  description.codecs.forEach(function(codec) {
    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
      var encParam = {
        ssrc: primarySsrc,
        codecPayloadType: parseInt(codec.parameters.apt, 10)
      };
      if (primarySsrc && secondarySsrc) {
        encParam.rtx = {ssrc: secondarySsrc};
      }
      encodingParameters.push(encParam);
      if (hasRed) {
        encParam = JSON.parse(JSON.stringify(encParam));
        encParam.fec = {
          ssrc: primarySsrc,
          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
        };
        encodingParameters.push(encParam);
      }
    }
  });
  if (encodingParameters.length === 0 && primarySsrc) {
    encodingParameters.push({
      ssrc: primarySsrc
    });
  }

  // we support both b=AS and b=TIAS but interpret AS as TIAS.
  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
  if (bandwidth.length) {
    if (bandwidth[0].indexOf('b=TIAS:') === 0) {
      bandwidth = parseInt(bandwidth[0].substr(7), 10);
    } else if (bandwidth[0].indexOf('b=AS:') === 0) {
      // use formula from JSEP to convert b=AS to TIAS value.
      bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95
          - (50 * 40 * 8);
    } else {
      bandwidth = undefined;
    }
    encodingParameters.forEach(function(params) {
      params.maxBitrate = bandwidth;
    });
  }
  return encodingParameters;
};

// parses http://draft.ortc.org/#rtcrtcpparameters*
SDPUtils.parseRtcpParameters = function(mediaSection) {
  var rtcpParameters = {};

  // Gets the first SSRC. Note tha with RTX there might be multiple
  // SSRCs.
  var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
    .map(function(line) {
      return SDPUtils.parseSsrcMedia(line);
    })
    .filter(function(obj) {
      return obj.attribute === 'cname';
    })[0];
  if (remoteSsrc) {
    rtcpParameters.cname = remoteSsrc.value;
    rtcpParameters.ssrc = remoteSsrc.ssrc;
  }

  // Edge uses the compound attribute instead of reducedSize
  // compound is !reducedSize
  var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
  rtcpParameters.reducedSize = rsize.length > 0;
  rtcpParameters.compound = rsize.length === 0;

  // parses the rtcp-mux attrіbute.
  // Note that Edge does not support unmuxed RTCP.
  var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
  rtcpParameters.mux = mux.length > 0;

  return rtcpParameters;
};

// parses either a=msid: or a=ssrc:... msid lines and returns
// the id of the MediaStream and MediaStreamTrack.
SDPUtils.parseMsid = function(mediaSection) {
  var parts;
  var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
  if (spec.length === 1) {
    parts = spec[0].substr(7).split(' ');
    return {stream: parts[0], track: parts[1]};
  }
  var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
    .map(function(line) {
      return SDPUtils.parseSsrcMedia(line);
    })
    .filter(function(msidParts) {
      return msidParts.attribute === 'msid';
    });
  if (planB.length > 0) {
    parts = planB[0].value.split(' ');
    return {stream: parts[0], track: parts[1]};
  }
};

// SCTP
// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back
// to draft-ietf-mmusic-sctp-sdp-05
SDPUtils.parseSctpDescription = function(mediaSection) {
  var mline = SDPUtils.parseMLine(mediaSection);
  var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');
  var maxMessageSize;
  if (maxSizeLine.length > 0) {
    maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);
  }
  if (isNaN(maxMessageSize)) {
    maxMessageSize = 65536;
  }
  var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');
  if (sctpPort.length > 0) {
    return {
      port: parseInt(sctpPort[0].substr(12), 10),
      protocol: mline.fmt,
      maxMessageSize: maxMessageSize
    };
  }
  var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');
  if (sctpMapLines.length > 0) {
    var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0]
      .substr(10)
      .split(' ');
    return {
      port: parseInt(parts[0], 10),
      protocol: parts[1],
      maxMessageSize: maxMessageSize
    };
  }
};

// SCTP
// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers
// support by now receiving in this format, unless we originally parsed
// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line
// protocol of DTLS/SCTP -- without UDP/ or TCP/)
SDPUtils.writeSctpDescription = function(media, sctp) {
  var output = [];
  if (media.protocol !== 'DTLS/SCTP') {
    output = [
      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n',
      'c=IN IP4 0.0.0.0\r\n',
      'a=sctp-port:' + sctp.port + '\r\n'
    ];
  } else {
    output = [
      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n',
      'c=IN IP4 0.0.0.0\r\n',
      'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n'
    ];
  }
  if (sctp.maxMessageSize !== undefined) {
    output.push('a=max-message-size:' + sctp.maxMessageSize + '\r\n');
  }
  return output.join('');
};

// Generate a session ID for SDP.
// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
// recommends using a cryptographically random +ve 64-bit value
// but right now this should be acceptable and within the right range
SDPUtils.generateSessionId = function() {
  return Math.random().toString().substr(2, 21);
};

// Write boilder plate for start of SDP
// sessId argument is optional - if not supplied it will
// be generated randomly
// sessVersion is optional and defaults to 2
// sessUser is optional and defaults to 'thisisadapterortc'
SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {
  var sessionId;
  var version = sessVer !== undefined ? sessVer : 2;
  if (sessId) {
    sessionId = sessId;
  } else {
    sessionId = SDPUtils.generateSessionId();
  }
  var user = sessUser || 'thisisadapterortc';
  // FIXME: sess-id should be an NTP timestamp.
  return 'v=0\r\n' +
      'o=' + user + ' ' + sessionId + ' ' + version +
        ' IN IP4 127.0.0.1\r\n' +
      's=-\r\n' +
      't=0 0\r\n';
};

SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {
  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);

  // Map ICE parameters (ufrag, pwd) to SDP.
  sdp += SDPUtils.writeIceParameters(
    transceiver.iceGatherer.getLocalParameters());

  // Map DTLS parameters to SDP.
  sdp += SDPUtils.writeDtlsParameters(
    transceiver.dtlsTransport.getLocalParameters(),
    type === 'offer' ? 'actpass' : 'active');

  sdp += 'a=mid:' + transceiver.mid + '\r\n';

  if (transceiver.direction) {
    sdp += 'a=' + transceiver.direction + '\r\n';
  } else if (transceiver.rtpSender && transceiver.rtpReceiver) {
    sdp += 'a=sendrecv\r\n';
  } else if (transceiver.rtpSender) {
    sdp += 'a=sendonly\r\n';
  } else if (transceiver.rtpReceiver) {
    sdp += 'a=recvonly\r\n';
  } else {
    sdp += 'a=inactive\r\n';
  }

  if (transceiver.rtpSender) {
    // spec.
    var msid = 'msid:' + stream.id + ' ' +
        transceiver.rtpSender.track.id + '\r\n';
    sdp += 'a=' + msid;

    // for Chrome.
    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
        ' ' + msid;
    if (transceiver.sendEncodingParameters[0].rtx) {
      sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
          ' ' + msid;
      sdp += 'a=ssrc-group:FID ' +
          transceiver.sendEncodingParameters[0].ssrc + ' ' +
          transceiver.sendEncodingParameters[0].rtx.ssrc +
          '\r\n';
    }
  }
  // FIXME: this should be written by writeRtpDescription.
  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
      ' cname:' + SDPUtils.localCName + '\r\n';
  if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
        ' cname:' + SDPUtils.localCName + '\r\n';
  }
  return sdp;
};

// Gets the direction from the mediaSection or the sessionpart.
SDPUtils.getDirection = function(mediaSection, sessionpart) {
  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
  var lines = SDPUtils.splitLines(mediaSection);
  for (var i = 0; i < lines.length; i++) {
    switch (lines[i]) {
      case 'a=sendrecv':
      case 'a=sendonly':
      case 'a=recvonly':
      case 'a=inactive':
        return lines[i].substr(2);
      default:
        // FIXME: What should happen here?
    }
  }
  if (sessionpart) {
    return SDPUtils.getDirection(sessionpart);
  }
  return 'sendrecv';
};

SDPUtils.getKind = function(mediaSection) {
  var lines = SDPUtils.splitLines(mediaSection);
  var mline = lines[0].split(' ');
  return mline[0].substr(2);
};

SDPUtils.isRejected = function(mediaSection) {
  return mediaSection.split(' ', 2)[1] === '0';
};

SDPUtils.parseMLine = function(mediaSection) {
  var lines = SDPUtils.splitLines(mediaSection);
  var parts = lines[0].substr(2).split(' ');
  return {
    kind: parts[0],
    port: parseInt(parts[1], 10),
    protocol: parts[2],
    fmt: parts.slice(3).join(' ')
  };
};

SDPUtils.parseOLine = function(mediaSection) {
  var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
  var parts = line.substr(2).split(' ');
  return {
    username: parts[0],
    sessionId: parts[1],
    sessionVersion: parseInt(parts[2], 10),
    netType: parts[3],
    addressType: parts[4],
    address: parts[5]
  };
};

// a very naive interpretation of a valid SDP.
SDPUtils.isValidSDP = function(blob) {
  if (typeof blob !== 'string' || blob.length === 0) {
    return false;
  }
  var lines = SDPUtils.splitLines(blob);
  for (var i = 0; i < lines.length; i++) {
    if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {
      return false;
    }
    // TODO: check the modifier a bit more.
  }
  return true;
};

// Expose public methods.
if (typeof module === 'object') {
  module.exports = SDPUtils;
}

},{}],176:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":80,"inherits":85,"readable-stream/duplex.js":177,"readable-stream/passthrough.js":186,"readable-stream/readable.js":187,"readable-stream/transform.js":188,"readable-stream/writable.js":189}],177:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');

},{"./lib/_stream_duplex.js":178}],178:[function(require,module,exports){
arguments[4][34][0].apply(exports,arguments)
},{"./_stream_readable":180,"./_stream_writable":182,"core-util-is":49,"dup":34,"inherits":85,"process-nextick-args":151}],179:[function(require,module,exports){
arguments[4][35][0].apply(exports,arguments)
},{"./_stream_transform":181,"core-util-is":49,"dup":35,"inherits":85}],180:[function(require,module,exports){
arguments[4][36][0].apply(exports,arguments)
},{"./_stream_duplex":178,"./internal/streams/BufferList":183,"./internal/streams/destroy":184,"./internal/streams/stream":185,"_process":152,"core-util-is":49,"dup":36,"events":80,"inherits":85,"isarray":88,"process-nextick-args":151,"safe-buffer":190,"string_decoder/":191,"util":29}],181:[function(require,module,exports){
arguments[4][37][0].apply(exports,arguments)
},{"./_stream_duplex":178,"core-util-is":49,"dup":37,"inherits":85}],182:[function(require,module,exports){
arguments[4][38][0].apply(exports,arguments)
},{"./_stream_duplex":178,"./internal/streams/destroy":184,"./internal/streams/stream":185,"_process":152,"core-util-is":49,"dup":38,"inherits":85,"process-nextick-args":151,"safe-buffer":190,"timers":210,"util-deprecate":214}],183:[function(require,module,exports){
arguments[4][39][0].apply(exports,arguments)
},{"dup":39,"safe-buffer":190,"util":29}],184:[function(require,module,exports){
arguments[4][40][0].apply(exports,arguments)
},{"dup":40,"process-nextick-args":151}],185:[function(require,module,exports){
arguments[4][41][0].apply(exports,arguments)
},{"dup":41,"events":80}],186:[function(require,module,exports){
module.exports = require('./readable').PassThrough

},{"./readable":187}],187:[function(require,module,exports){
arguments[4][43][0].apply(exports,arguments)
},{"./lib/_stream_duplex.js":178,"./lib/_stream_passthrough.js":179,"./lib/_stream_readable.js":180,"./lib/_stream_transform.js":181,"./lib/_stream_writable.js":182,"dup":43}],188:[function(require,module,exports){
arguments[4][44][0].apply(exports,arguments)
},{"./readable":187,"dup":44}],189:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');

},{"./lib/_stream_writable.js":182}],190:[function(require,module,exports){
arguments[4][45][0].apply(exports,arguments)
},{"buffer":47,"dup":45}],191:[function(require,module,exports){
arguments[4][42][0].apply(exports,arguments)
},{"dup":42,"safe-buffer":190}],192:[function(require,module,exports){
(function (global){(function (){
var ClientRequest = require('./lib/request')
var response = require('./lib/response')
var extend = require('xtend')
var statusCodes = require('builtin-status-codes')
var url = require('url')

var http = exports

http.request = function (opts, cb) {
	if (typeof opts === 'string')
		opts = url.parse(opts)
	else
		opts = extend(opts)

	// Normally, the page is loaded from http or https, so not specifying a protocol
	// will result in a (valid) protocol-relative url. However, this won't work if
	// the protocol is something else, like 'file:'
	var defaultProtocol = global.location.protocol.search(/^https?:$/) === -1 ? 'http:' : ''

	var protocol = opts.protocol || defaultProtocol
	var host = opts.hostname || opts.host
	var port = opts.port
	var path = opts.path || '/'

	// Necessary for IPv6 addresses
	if (host && host.indexOf(':') !== -1)
		host = '[' + host + ']'

	// This may be a relative url. The browser should always be able to interpret it correctly.
	opts.url = (host ? (protocol + '//' + host) : '') + (port ? ':' + port : '') + path
	opts.method = (opts.method || 'GET').toUpperCase()
	opts.headers = opts.headers || {}

	// Also valid opts.auth, opts.mode

	var req = new ClientRequest(opts)
	if (cb)
		req.on('response', cb)
	return req
}

http.get = function get (opts, cb) {
	var req = http.request(opts, cb)
	req.end()
	return req
}

http.ClientRequest = ClientRequest
http.IncomingMessage = response.IncomingMessage

http.Agent = function () {}
http.Agent.defaultMaxSockets = 4

http.globalAgent = new http.Agent()

http.STATUS_CODES = statusCodes

http.METHODS = [
	'CHECKOUT',
	'CONNECT',
	'COPY',
	'DELETE',
	'GET',
	'HEAD',
	'LOCK',
	'M-SEARCH',
	'MERGE',
	'MKACTIVITY',
	'MKCOL',
	'MOVE',
	'NOTIFY',
	'OPTIONS',
	'PATCH',
	'POST',
	'PROPFIND',
	'PROPPATCH',
	'PURGE',
	'PUT',
	'REPORT',
	'SEARCH',
	'SUBSCRIBE',
	'TRACE',
	'UNLOCK',
	'UNSUBSCRIBE'
]
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./lib/request":194,"./lib/response":195,"builtin-status-codes":48,"url":212,"xtend":233}],193:[function(require,module,exports){
(function (global){(function (){
exports.fetch = isFunction(global.fetch) && isFunction(global.ReadableStream)

exports.writableStream = isFunction(global.WritableStream)

exports.abortController = isFunction(global.AbortController)

exports.blobConstructor = false
try {
	new Blob([new ArrayBuffer(1)])
	exports.blobConstructor = true
} catch (e) {}

// The xhr request to example.com may violate some restrictive CSP configurations,
// so if we're running in a browser that supports `fetch`, avoid calling getXHR()
// and assume support for certain features below.
var xhr
function getXHR () {
	// Cache the xhr value
	if (xhr !== undefined) return xhr

	if (global.XMLHttpRequest) {
		xhr = new global.XMLHttpRequest()
		// If XDomainRequest is available (ie only, where xhr might not work
		// cross domain), use the page location. Otherwise use example.com
		// Note: this doesn't actually make an http request.
		try {
			xhr.open('GET', global.XDomainRequest ? '/' : 'https://example.com')
		} catch(e) {
			xhr = null
		}
	} else {
		// Service workers don't have XHR
		xhr = null
	}
	return xhr
}

function checkTypeSupport (type) {
	var xhr = getXHR()
	if (!xhr) return false
	try {
		xhr.responseType = type
		return xhr.responseType === type
	} catch (e) {}
	return false
}

// For some strange reason, Safari 7.0 reports typeof global.ArrayBuffer === 'object'.
// Safari 7.1 appears to have fixed this bug.
var haveArrayBuffer = typeof global.ArrayBuffer !== 'undefined'
var haveSlice = haveArrayBuffer && isFunction(global.ArrayBuffer.prototype.slice)

// If fetch is supported, then arraybuffer will be supported too. Skip calling
// checkTypeSupport(), since that calls getXHR().
exports.arraybuffer = exports.fetch || (haveArrayBuffer && checkTypeSupport('arraybuffer'))

// These next two tests unavoidably show warnings in Chrome. Since fetch will always
// be used if it's available, just return false for these to avoid the warnings.
exports.msstream = !exports.fetch && haveSlice && checkTypeSupport('ms-stream')
exports.mozchunkedarraybuffer = !exports.fetch && haveArrayBuffer &&
	checkTypeSupport('moz-chunked-arraybuffer')

// If fetch is supported, then overrideMimeType will be supported too. Skip calling
// getXHR().
exports.overrideMimeType = exports.fetch || (getXHR() ? isFunction(getXHR().overrideMimeType) : false)

exports.vbArray = isFunction(global.VBArray)

function isFunction (value) {
	return typeof value === 'function'
}

xhr = null // Help gc

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],194:[function(require,module,exports){
(function (process,global,Buffer){(function (){
var capability = require('./capability')
var inherits = require('inherits')
var response = require('./response')
var stream = require('readable-stream')
var toArrayBuffer = require('to-arraybuffer')

var IncomingMessage = response.IncomingMessage
var rStates = response.readyStates

function decideMode (preferBinary, useFetch) {
	if (capability.fetch && useFetch) {
		return 'fetch'
	} else if (capability.mozchunkedarraybuffer) {
		return 'moz-chunked-arraybuffer'
	} else if (capability.msstream) {
		return 'ms-stream'
	} else if (capability.arraybuffer && preferBinary) {
		return 'arraybuffer'
	} else if (capability.vbArray && preferBinary) {
		return 'text:vbarray'
	} else {
		return 'text'
	}
}

var ClientRequest = module.exports = function (opts) {
	var self = this
	stream.Writable.call(self)

	self._opts = opts
	self._body = []
	self._headers = {}
	if (opts.auth)
		self.setHeader('Authorization', 'Basic ' + new Buffer(opts.auth).toString('base64'))
	Object.keys(opts.headers).forEach(function (name) {
		self.setHeader(name, opts.headers[name])
	})

	var preferBinary
	var useFetch = true
	if (opts.mode === 'disable-fetch' || ('requestTimeout' in opts && !capability.abortController)) {
		// If the use of XHR should be preferred. Not typically needed.
		useFetch = false
		preferBinary = true
	} else if (opts.mode === 'prefer-streaming') {
		// If streaming is a high priority but binary compatibility and
		// the accuracy of the 'content-type' header aren't
		preferBinary = false
	} else if (opts.mode === 'allow-wrong-content-type') {
		// If streaming is more important than preserving the 'content-type' header
		preferBinary = !capability.overrideMimeType
	} else if (!opts.mode || opts.mode === 'default' || opts.mode === 'prefer-fast') {
		// Use binary if text streaming may corrupt data or the content-type header, or for speed
		preferBinary = true
	} else {
		throw new Error('Invalid value for opts.mode')
	}
	self._mode = decideMode(preferBinary, useFetch)
	self._fetchTimer = null

	self.on('finish', function () {
		self._onFinish()
	})
}

inherits(ClientRequest, stream.Writable)

ClientRequest.prototype.setHeader = function (name, value) {
	var self = this
	var lowerName = name.toLowerCase()
	// This check is not necessary, but it prevents warnings from browsers about setting unsafe
	// headers. To be honest I'm not entirely sure hiding these warnings is a good thing, but
	// http-browserify did it, so I will too.
	if (unsafeHeaders.indexOf(lowerName) !== -1)
		return

	self._headers[lowerName] = {
		name: name,
		value: value
	}
}

ClientRequest.prototype.getHeader = function (name) {
	var header = this._headers[name.toLowerCase()]
	if (header)
		return header.value
	return null
}

ClientRequest.prototype.removeHeader = function (name) {
	var self = this
	delete self._headers[name.toLowerCase()]
}

ClientRequest.prototype._onFinish = function () {
	var self = this

	if (self._destroyed)
		return
	var opts = self._opts

	var headersObj = self._headers
	var body = null
	if (opts.method !== 'GET' && opts.method !== 'HEAD') {
		if (capability.arraybuffer) {
			body = toArrayBuffer(Buffer.concat(self._body))
		} else if (capability.blobConstructor) {
			body = new global.Blob(self._body.map(function (buffer) {
				return toArrayBuffer(buffer)
			}), {
				type: (headersObj['content-type'] || {}).value || ''
			})
		} else {
			// get utf8 string
			body = Buffer.concat(self._body).toString()
		}
	}

	// create flattened list of headers
	var headersList = []
	Object.keys(headersObj).forEach(function (keyName) {
		var name = headersObj[keyName].name
		var value = headersObj[keyName].value
		if (Array.isArray(value)) {
			value.forEach(function (v) {
				headersList.push([name, v])
			})
		} else {
			headersList.push([name, value])
		}
	})

	if (self._mode === 'fetch') {
		var signal = null
		var fetchTimer = null
		if (capability.abortController) {
			var controller = new AbortController()
			signal = controller.signal
			self._fetchAbortController = controller

			if ('requestTimeout' in opts && opts.requestTimeout !== 0) {
				self._fetchTimer = global.setTimeout(function () {
					self.emit('requestTimeout')
					if (self._fetchAbortController)
						self._fetchAbortController.abort()
				}, opts.requestTimeout)
			}
		}

		global.fetch(self._opts.url, {
			method: self._opts.method,
			headers: headersList,
			body: body || undefined,
			mode: 'cors',
			credentials: opts.withCredentials ? 'include' : 'same-origin',
			signal: signal
		}).then(function (response) {
			self._fetchResponse = response
			self._connect()
		}, function (reason) {
			global.clearTimeout(self._fetchTimer)
			if (!self._destroyed)
				self.emit('error', reason)
		})
	} else {
		var xhr = self._xhr = new global.XMLHttpRequest()
		try {
			xhr.open(self._opts.method, self._opts.url, true)
		} catch (err) {
			process.nextTick(function () {
				self.emit('error', err)
			})
			return
		}

		// Can't set responseType on really old browsers
		if ('responseType' in xhr)
			xhr.responseType = self._mode.split(':')[0]

		if ('withCredentials' in xhr)
			xhr.withCredentials = !!opts.withCredentials

		if (self._mode === 'text' && 'overrideMimeType' in xhr)
			xhr.overrideMimeType('text/plain; charset=x-user-defined')

		if ('requestTimeout' in opts) {
			xhr.timeout = opts.requestTimeout
			xhr.ontimeout = function () {
				self.emit('requestTimeout')
			}
		}

		headersList.forEach(function (header) {
			xhr.setRequestHeader(header[0], header[1])
		})

		self._response = null
		xhr.onreadystatechange = function () {
			switch (xhr.readyState) {
				case rStates.LOADING:
				case rStates.DONE:
					self._onXHRProgress()
					break
			}
		}
		// Necessary for streaming in Firefox, since xhr.response is ONLY defined
		// in onprogress, not in onreadystatechange with xhr.readyState = 3
		if (self._mode === 'moz-chunked-arraybuffer') {
			xhr.onprogress = function () {
				self._onXHRProgress()
			}
		}

		xhr.onerror = function () {
			if (self._destroyed)
				return
			self.emit('error', new Error('XHR error'))
		}

		try {
			xhr.send(body)
		} catch (err) {
			process.nextTick(function () {
				self.emit('error', err)
			})
			return
		}
	}
}

/**
 * Checks if xhr.status is readable and non-zero, indicating no error.
 * Even though the spec says it should be available in readyState 3,
 * accessing it throws an exception in IE8
 */
function statusValid (xhr) {
	try {
		var status = xhr.status
		return (status !== null && status !== 0)
	} catch (e) {
		return false
	}
}

ClientRequest.prototype._onXHRProgress = function () {
	var self = this

	if (!statusValid(self._xhr) || self._destroyed)
		return

	if (!self._response)
		self._connect()

	self._response._onXHRProgress()
}

ClientRequest.prototype._connect = function () {
	var self = this

	if (self._destroyed)
		return

	self._response = new IncomingMessage(self._xhr, self._fetchResponse, self._mode, self._fetchTimer)
	self._response.on('error', function(err) {
		self.emit('error', err)
	})

	self.emit('response', self._response)
}

ClientRequest.prototype._write = function (chunk, encoding, cb) {
	var self = this

	self._body.push(chunk)
	cb()
}

ClientRequest.prototype.abort = ClientRequest.prototype.destroy = function () {
	var self = this
	self._destroyed = true
	global.clearTimeout(self._fetchTimer)
	if (self._response)
		self._response._destroyed = true
	if (self._xhr)
		self._xhr.abort()
	else if (self._fetchAbortController)
		self._fetchAbortController.abort()
}

ClientRequest.prototype.end = function (data, encoding, cb) {
	var self = this
	if (typeof data === 'function') {
		cb = data
		data = undefined
	}

	stream.Writable.prototype.end.call(self, data, encoding, cb)
}

ClientRequest.prototype.flushHeaders = function () {}
ClientRequest.prototype.setTimeout = function () {}
ClientRequest.prototype.setNoDelay = function () {}
ClientRequest.prototype.setSocketKeepAlive = function () {}

// Taken from http://www.w3.org/TR/XMLHttpRequest/#the-setrequestheader%28%29-method
var unsafeHeaders = [
	'accept-charset',
	'accept-encoding',
	'access-control-request-headers',
	'access-control-request-method',
	'connection',
	'content-length',
	'cookie',
	'cookie2',
	'date',
	'dnt',
	'expect',
	'host',
	'keep-alive',
	'origin',
	'referer',
	'te',
	'trailer',
	'transfer-encoding',
	'upgrade',
	'via'
]

}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./capability":193,"./response":195,"_process":152,"buffer":47,"inherits":85,"readable-stream":204,"to-arraybuffer":211}],195:[function(require,module,exports){
(function (process,global,Buffer){(function (){
var capability = require('./capability')
var inherits = require('inherits')
var stream = require('readable-stream')

var rStates = exports.readyStates = {
	UNSENT: 0,
	OPENED: 1,
	HEADERS_RECEIVED: 2,
	LOADING: 3,
	DONE: 4
}

var IncomingMessage = exports.IncomingMessage = function (xhr, response, mode, fetchTimer) {
	var self = this
	stream.Readable.call(self)

	self._mode = mode
	self.headers = {}
	self.rawHeaders = []
	self.trailers = {}
	self.rawTrailers = []

	// Fake the 'close' event, but only once 'end' fires
	self.on('end', function () {
		// The nextTick is necessary to prevent the 'request' module from causing an infinite loop
		process.nextTick(function () {
			self.emit('close')
		})
	})

	if (mode === 'fetch') {
		self._fetchResponse = response

		self.url = response.url
		self.statusCode = response.status
		self.statusMessage = response.statusText
		
		response.headers.forEach(function (header, key){
			self.headers[key.toLowerCase()] = header
			self.rawHeaders.push(key, header)
		})

		if (capability.writableStream) {
			var writable = new WritableStream({
				write: function (chunk) {
					return new Promise(function (resolve, reject) {
						if (self._destroyed) {
							reject()
						} else if(self.push(new Buffer(chunk))) {
							resolve()
						} else {
							self._resumeFetch = resolve
						}
					})
				},
				close: function () {
					global.clearTimeout(fetchTimer)
					if (!self._destroyed)
						self.push(null)
				},
				abort: function (err) {
					if (!self._destroyed)
						self.emit('error', err)
				}
			})

			try {
				response.body.pipeTo(writable).catch(function (err) {
					global.clearTimeout(fetchTimer)
					if (!self._destroyed)
						self.emit('error', err)
				})
				return
			} catch (e) {} // pipeTo method isn't defined. Can't find a better way to feature test this
		}
		// fallback for when writableStream or pipeTo aren't available
		var reader = response.body.getReader()
		function read () {
			reader.read().then(function (result) {
				if (self._destroyed)
					return
				if (result.done) {
					global.clearTimeout(fetchTimer)
					self.push(null)
					return
				}
				self.push(new Buffer(result.value))
				read()
			}).catch(function (err) {
				global.clearTimeout(fetchTimer)
				if (!self._destroyed)
					self.emit('error', err)
			})
		}
		read()
	} else {
		self._xhr = xhr
		self._pos = 0

		self.url = xhr.responseURL
		self.statusCode = xhr.status
		self.statusMessage = xhr.statusText
		var headers = xhr.getAllResponseHeaders().split(/\r?\n/)
		headers.forEach(function (header) {
			var matches = header.match(/^([^:]+):\s*(.*)/)
			if (matches) {
				var key = matches[1].toLowerCase()
				if (key === 'set-cookie') {
					if (self.headers[key] === undefined) {
						self.headers[key] = []
					}
					self.headers[key].push(matches[2])
				} else if (self.headers[key] !== undefined) {
					self.headers[key] += ', ' + matches[2]
				} else {
					self.headers[key] = matches[2]
				}
				self.rawHeaders.push(matches[1], matches[2])
			}
		})

		self._charset = 'x-user-defined'
		if (!capability.overrideMimeType) {
			var mimeType = self.rawHeaders['mime-type']
			if (mimeType) {
				var charsetMatch = mimeType.match(/;\s*charset=([^;])(;|$)/)
				if (charsetMatch) {
					self._charset = charsetMatch[1].toLowerCase()
				}
			}
			if (!self._charset)
				self._charset = 'utf-8' // best guess
		}
	}
}

inherits(IncomingMessage, stream.Readable)

IncomingMessage.prototype._read = function () {
	var self = this

	var resolve = self._resumeFetch
	if (resolve) {
		self._resumeFetch = null
		resolve()
	}
}

IncomingMessage.prototype._onXHRProgress = function () {
	var self = this

	var xhr = self._xhr

	var response = null
	switch (self._mode) {
		case 'text:vbarray': // For IE9
			if (xhr.readyState !== rStates.DONE)
				break
			try {
				// This fails in IE8
				response = new global.VBArray(xhr.responseBody).toArray()
			} catch (e) {}
			if (response !== null) {
				self.push(new Buffer(response))
				break
			}
			// Falls through in IE8	
		case 'text':
			try { // This will fail when readyState = 3 in IE9. Switch mode and wait for readyState = 4
				response = xhr.responseText
			} catch (e) {
				self._mode = 'text:vbarray'
				break
			}
			if (response.length > self._pos) {
				var newData = response.substr(self._pos)
				if (self._charset === 'x-user-defined') {
					var buffer = new Buffer(newData.length)
					for (var i = 0; i < newData.length; i++)
						buffer[i] = newData.charCodeAt(i) & 0xff

					self.push(buffer)
				} else {
					self.push(newData, self._charset)
				}
				self._pos = response.length
			}
			break
		case 'arraybuffer':
			if (xhr.readyState !== rStates.DONE || !xhr.response)
				break
			response = xhr.response
			self.push(new Buffer(new Uint8Array(response)))
			break
		case 'moz-chunked-arraybuffer': // take whole
			response = xhr.response
			if (xhr.readyState !== rStates.LOADING || !response)
				break
			self.push(new Buffer(new Uint8Array(response)))
			break
		case 'ms-stream':
			response = xhr.response
			if (xhr.readyState !== rStates.LOADING)
				break
			var reader = new global.MSStreamReader()
			reader.onprogress = function () {
				if (reader.result.byteLength > self._pos) {
					self.push(new Buffer(new Uint8Array(reader.result.slice(self._pos))))
					self._pos = reader.result.byteLength
				}
			}
			reader.onload = function () {
				self.push(null)
			}
			// reader.onerror = ??? // TODO: this
			reader.readAsArrayBuffer(response)
			break
	}

	// The ms-stream case handles end separately in reader.onload()
	if (self._xhr.readyState === rStates.DONE && self._mode !== 'ms-stream') {
		self.push(null)
	}
}

}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./capability":193,"_process":152,"buffer":47,"inherits":85,"readable-stream":204}],196:[function(require,module,exports){
arguments[4][34][0].apply(exports,arguments)
},{"./_stream_readable":198,"./_stream_writable":200,"core-util-is":49,"dup":34,"inherits":85,"process-nextick-args":151}],197:[function(require,module,exports){
arguments[4][35][0].apply(exports,arguments)
},{"./_stream_transform":199,"core-util-is":49,"dup":35,"inherits":85}],198:[function(require,module,exports){
arguments[4][36][0].apply(exports,arguments)
},{"./_stream_duplex":196,"./internal/streams/BufferList":201,"./internal/streams/destroy":202,"./internal/streams/stream":203,"_process":152,"core-util-is":49,"dup":36,"events":80,"inherits":85,"isarray":88,"process-nextick-args":151,"safe-buffer":205,"string_decoder/":206,"util":29}],199:[function(require,module,exports){
arguments[4][37][0].apply(exports,arguments)
},{"./_stream_duplex":196,"core-util-is":49,"dup":37,"inherits":85}],200:[function(require,module,exports){
arguments[4][38][0].apply(exports,arguments)
},{"./_stream_duplex":196,"./internal/streams/destroy":202,"./internal/streams/stream":203,"_process":152,"core-util-is":49,"dup":38,"inherits":85,"process-nextick-args":151,"safe-buffer":205,"timers":210,"util-deprecate":214}],201:[function(require,module,exports){
arguments[4][39][0].apply(exports,arguments)
},{"dup":39,"safe-buffer":205,"util":29}],202:[function(require,module,exports){
arguments[4][40][0].apply(exports,arguments)
},{"dup":40,"process-nextick-args":151}],203:[function(require,module,exports){
arguments[4][41][0].apply(exports,arguments)
},{"dup":41,"events":80}],204:[function(require,module,exports){
arguments[4][43][0].apply(exports,arguments)
},{"./lib/_stream_duplex.js":196,"./lib/_stream_passthrough.js":197,"./lib/_stream_readable.js":198,"./lib/_stream_transform.js":199,"./lib/_stream_writable.js":200,"dup":43}],205:[function(require,module,exports){
arguments[4][45][0].apply(exports,arguments)
},{"buffer":47,"dup":45}],206:[function(require,module,exports){
arguments[4][42][0].apply(exports,arguments)
},{"dup":42,"safe-buffer":205}],207:[function(require,module,exports){
arguments[4][42][0].apply(exports,arguments)
},{"dup":42,"safe-buffer":173}],208:[function(require,module,exports){
(function (global){(function (){
(function (global, factory) {
            typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
            typeof define === 'function' && define.amd ? define(['exports'], factory) :
            (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.strophe = {}));
})(this, (function (exports) { 'use strict';

            var global$1 = typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {};

            /*
             * This module provides uniform
             * Shims APIs and globals that are not present in all JS environments,
             * the most common example for Strophe being browser APIs like WebSocket
             * and DOM that don't exist under nodejs.
             *
             * Usually these will be supplied in nodejs by conditionally requiring a
             * NPM module that provides a compatible implementation.
             */

            /* global global */

            /**
             * WHATWG WebSockets API
             * https://www.w3.org/TR/websockets/
             *
             * Interface to use the web socket protocol
             *
             * Used implementations:
             * - supported browsers: built-in in WebSocket global
             *   https://developer.mozilla.org/en-US/docs/Web/API/WebSocket#Browser_compatibility
             * - nodejs: use standard-compliant 'ws' module
             *   https://www.npmjs.com/package/ws
             */
            function getWebSocketImplementation() {
              let WebSocketImplementation = global$1.WebSocket;

              if (typeof WebSocketImplementation === 'undefined') {
                try {
                  WebSocketImplementation = require('ws');
                } catch (err) {
                  throw new Error('You must install the "ws" package to use Strophe in nodejs.');
                }
              }

              return WebSocketImplementation;
            }

            const WebSocket = getWebSocketImplementation();
            /**
             * DOMParser
             * https://w3c.github.io/DOM-Parsing/#the-domparser-interface
             *
             * Interface to parse XML strings into Document objects
             *
             * Used implementations:
             * - supported browsers: built-in in DOMParser global
             *   https://developer.mozilla.org/en-US/docs/Web/API/DOMParser#Browser_compatibility
             * - nodejs: use '@xmldom/xmldom' module
             *   https://www.npmjs.com/package/@xmldom/xmldom
             */

            function getDOMParserImplementation() {
              let DOMParserImplementation = global$1.DOMParser;

              if (typeof DOMParserImplementation === 'undefined') {
                try {
                  DOMParserImplementation = require('@xmldom/xmldom').DOMParser;
                } catch (err) {
                  throw new Error('You must install the "@xmldom/xmldom" package to use Strophe in nodejs.');
                }
              }

              return DOMParserImplementation;
            }

            const DOMParser = getDOMParserImplementation();
            /**
             *  Gets IE xml doc object. Used by getDummyXMLDocument shim.
             *
             *  Returns:
             *    A Microsoft XML DOM Object
             *  See Also:
             *    http://msdn.microsoft.com/en-us/library/ms757837%28VS.85%29.aspx
             */

            function _getIEXmlDom() {
              const docStrings = ["Msxml2.DOMDocument.6.0", "Msxml2.DOMDocument.5.0", "Msxml2.DOMDocument.4.0", "MSXML2.DOMDocument.3.0", "MSXML2.DOMDocument", "MSXML.DOMDocument", "Microsoft.XMLDOM"];

              for (let d = 0; d < docStrings.length; d++) {
                try {
                  // eslint-disable-next-line no-undef
                  const doc = new ActiveXObject(docStrings[d]);
                  return doc;
                } catch (e) {// Try next one
                }
              }
            }
            /**
             * Creates a dummy XML DOM document to serve as an element and text node generator.
             *
             * Used implementations:
             *  - IE < 10: avoid using createDocument() due to a memory leak, use ie-specific
             *    workaround
             *  - other supported browsers: use document's createDocument
             *  - nodejs: use '@xmldom/xmldom'
             */


            function getDummyXMLDOMDocument() {
              // nodejs
              if (typeof document === 'undefined') {
                try {
                  const DOMImplementation = require('@xmldom/xmldom').DOMImplementation;

                  return new DOMImplementation().createDocument('jabber:client', 'strophe', null);
                } catch (err) {
                  throw new Error('You must install the "@xmldom/xmldom" package to use Strophe in nodejs.');
                }
              } // IE < 10


              if (document.implementation.createDocument === undefined || document.implementation.createDocument && document.documentMode && document.documentMode < 10) {
                const doc = _getIEXmlDom();

                doc.appendChild(doc.createElement('strophe'));
                return doc;
              } // All other supported browsers


              return document.implementation.createDocument('jabber:client', 'strophe', null);
            }

            /*
             * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
             * Digest Algorithm, as defined in RFC 1321.
             * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
             * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
             * Distributed under the BSD License
             * See http://pajhome.org.uk/crypt/md5 for more info.
             */

            /*
             * Everything that isn't used by Strophe has been stripped here!
             */

            /*
             * Add integers, wrapping at 2^32. This uses 16-bit operations internally
             * to work around bugs in some JS interpreters.
             */
            const safe_add$1 = function (x, y) {
              const lsw = (x & 0xFFFF) + (y & 0xFFFF);
              const msw = (x >> 16) + (y >> 16) + (lsw >> 16);
              return msw << 16 | lsw & 0xFFFF;
            };
            /*
             * Bitwise rotate a 32-bit number to the left.
             */


            const bit_rol = function (num, cnt) {
              return num << cnt | num >>> 32 - cnt;
            };
            /*
             * Convert a string to an array of little-endian words
             */


            const str2binl = function (str) {
              if (typeof str !== "string") {
                throw new Error("str2binl was passed a non-string");
              }

              const bin = [];

              for (let i = 0; i < str.length * 8; i += 8) {
                bin[i >> 5] |= (str.charCodeAt(i / 8) & 255) << i % 32;
              }

              return bin;
            };
            /*
             * Convert an array of little-endian words to a string
             */


            const binl2str = function (bin) {
              let str = "";

              for (let i = 0; i < bin.length * 32; i += 8) {
                str += String.fromCharCode(bin[i >> 5] >>> i % 32 & 255);
              }

              return str;
            };
            /*
             * Convert an array of little-endian words to a hex string.
             */


            const binl2hex = function (binarray) {
              const hex_tab = "0123456789abcdef";
              let str = "";

              for (let i = 0; i < binarray.length * 4; i++) {
                str += hex_tab.charAt(binarray[i >> 2] >> i % 4 * 8 + 4 & 0xF) + hex_tab.charAt(binarray[i >> 2] >> i % 4 * 8 & 0xF);
              }

              return str;
            };
            /*
             * These functions implement the four basic operations the algorithm uses.
             */


            const md5_cmn = function (q, a, b, x, s, t) {
              return safe_add$1(bit_rol(safe_add$1(safe_add$1(a, q), safe_add$1(x, t)), s), b);
            };

            const md5_ff = function (a, b, c, d, x, s, t) {
              return md5_cmn(b & c | ~b & d, a, b, x, s, t);
            };

            const md5_gg = function (a, b, c, d, x, s, t) {
              return md5_cmn(b & d | c & ~d, a, b, x, s, t);
            };

            const md5_hh = function (a, b, c, d, x, s, t) {
              return md5_cmn(b ^ c ^ d, a, b, x, s, t);
            };

            const md5_ii = function (a, b, c, d, x, s, t) {
              return md5_cmn(c ^ (b | ~d), a, b, x, s, t);
            };
            /*
             * Calculate the MD5 of an array of little-endian words, and a bit length
             */


            const core_md5 = function (x, len) {
              /* append padding */
              x[len >> 5] |= 0x80 << len % 32;
              x[(len + 64 >>> 9 << 4) + 14] = len;
              let a = 1732584193;
              let b = -271733879;
              let c = -1732584194;
              let d = 271733878;
              let olda, oldb, oldc, oldd;

              for (let i = 0; i < x.length; i += 16) {
                olda = a;
                oldb = b;
                oldc = c;
                oldd = d;
                a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
                d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
                c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
                b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
                a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
                d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
                c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
                b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
                a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
                d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
                c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
                b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
                a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
                d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
                c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
                b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
                a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
                d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
                c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
                b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
                a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
                d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
                c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
                b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
                a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
                d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
                c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
                b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
                a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
                d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
                c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
                b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
                a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
                d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
                c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
                b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
                a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
                d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
                c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
                b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
                a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
                d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
                c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
                b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
                a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
                d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
                c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
                b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
                a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
                d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
                c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
                b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
                a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
                d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
                c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
                b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
                a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
                d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
                c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
                b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
                a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
                d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
                c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
                b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
                a = safe_add$1(a, olda);
                b = safe_add$1(b, oldb);
                c = safe_add$1(c, oldc);
                d = safe_add$1(d, oldd);
              }

              return [a, b, c, d];
            };
            /*
             * These are the functions you'll usually want to call.
             * They take string arguments and return either hex or base-64 encoded
             * strings.
             */


            const MD5 = {
              hexdigest: function (s) {
                return binl2hex(core_md5(str2binl(s), s.length * 8));
              },
              hash: function (s) {
                return binl2str(core_md5(str2binl(s), s.length * 8));
              }
            };

            /** Class: Strophe.SASLMechanism
             *
             *  Encapsulates an SASL authentication mechanism.
             *
             *  User code may override the priority for each mechanism or disable it completely.
             *  See <priority> for information about changing priority and <test> for informatian on
             *  how to disable a mechanism.
             *
             *  By default, all mechanisms are enabled and the priorities are
             *
             *      SCRAM-SHA-1 - 60
             *      PLAIN       - 50
             *      OAUTHBEARER - 40
             *      X-OAUTH2    - 30
             *      ANONYMOUS   - 20
             *      EXTERNAL    - 10
             *
             *  See: Strophe.Connection.addSupportedSASLMechanisms
             */
            class SASLMechanism {
              /**
               * PrivateConstructor: Strophe.SASLMechanism
               * SASL auth mechanism abstraction.
               *
               *  Parameters:
               *    (String) name - SASL Mechanism name.
               *    (Boolean) isClientFirst - If client should send response first without challenge.
               *    (Number) priority - Priority.
               *
               *  Returns:
               *    A new Strophe.SASLMechanism object.
               */
              constructor(name, isClientFirst, priority) {
                /** PrivateVariable: mechname
                 *  Mechanism name.
                 */
                this.mechname = name;
                /** PrivateVariable: isClientFirst
                 *  If client sends response without initial server challenge.
                 */

                this.isClientFirst = isClientFirst;
                /** Variable: priority
                 *  Determines which <SASLMechanism> is chosen for authentication (Higher is better).
                 *  Users may override this to prioritize mechanisms differently.
                 *
                 *  Example: (This will cause Strophe to choose the mechanism that the server sent first)
                 *
                 *  > Strophe.SASLPlain.priority = Strophe.SASLSHA1.priority;
                 *
                 *  See <SASL mechanisms> for a list of available mechanisms.
                 *
                 */

                this.priority = priority;
              }
              /**
               *  Function: test
               *  Checks if mechanism able to run.
               *  To disable a mechanism, make this return false;
               *
               *  To disable plain authentication run
               *  > Strophe.SASLPlain.test = function() {
               *  >   return false;
               *  > }
               *
               *  See <SASL mechanisms> for a list of available mechanisms.
               *
               *  Parameters:
               *    (Strophe.Connection) connection - Target Connection.
               *
               *  Returns:
               *    (Boolean) If mechanism was able to run.
               */


              test() {
                // eslint-disable-line class-methods-use-this
                return true;
              }
              /** PrivateFunction: onStart
               *  Called before starting mechanism on some connection.
               *
               *  Parameters:
               *    (Strophe.Connection) connection - Target Connection.
               */


              onStart(connection) {
                this._connection = connection;
              }
              /** PrivateFunction: onChallenge
               *  Called by protocol implementation on incoming challenge.
               *
               *  By deafult, if the client is expected to send data first (isClientFirst === true),
               *  this method is called with `challenge` as null on the first call,
               *  unless `clientChallenge` is overridden in the relevant subclass.
               *
               *  Parameters:
               *    (Strophe.Connection) connection - Target Connection.
               *    (String) challenge - current challenge to handle.
               *
               *  Returns:
               *    (String) Mechanism response.
               */


              onChallenge(connection, challenge) {
                // eslint-disable-line
                throw new Error("You should implement challenge handling!");
              }
              /** PrivateFunction: clientChallenge
               *  Called by the protocol implementation if the client is expected to send
               *  data first in the authentication exchange (i.e. isClientFirst === true).
               *
               *  Parameters:
               *    (Strophe.Connection) connection - Target Connection.
               *
               *  Returns:
               *    (String) Mechanism response.
               */


              clientChallenge(connection) {
                if (!this.isClientFirst) {
                  throw new Error("clientChallenge should not be called if isClientFirst is false!");
                }

                return this.onChallenge(connection);
              }
              /** PrivateFunction: onFailure
               *  Protocol informs mechanism implementation about SASL failure.
               */


              onFailure() {
                this._connection = null;
              }
              /** PrivateFunction: onSuccess
               *  Protocol informs mechanism implementation about SASL success.
               */


              onSuccess() {
                this._connection = null;
              }

            }

            class SASLAnonymous extends SASLMechanism {
              /** PrivateConstructor: SASLAnonymous
               *  SASL ANONYMOUS authentication.
               */
              constructor() {
                let mechname = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'ANONYMOUS';
                let isClientFirst = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
                let priority = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 20;
                super(mechname, isClientFirst, priority);
              }

              test(connection) {
                // eslint-disable-line class-methods-use-this
                return connection.authcid === null;
              }

            }

            class SASLExternal extends SASLMechanism {
              /** PrivateConstructor: SASLExternal
               *  SASL EXTERNAL authentication.
               *
               *  The EXTERNAL mechanism allows a client to request the server to use
               *  credentials established by means external to the mechanism to
               *  authenticate the client. The external means may be, for instance,
               *  TLS services.
               */
              constructor() {
                let mechname = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'EXTERNAL';
                let isClientFirst = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
                let priority = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 10;
                super(mechname, isClientFirst, priority);
              }

              onChallenge(connection) {
                // eslint-disable-line class-methods-use-this

                /** According to XEP-178, an authzid SHOULD NOT be presented when the
                 * authcid contained or implied in the client certificate is the JID (i.e.
                 * authzid) with which the user wants to log in as.
                 *
                 * To NOT send the authzid, the user should therefore set the authcid equal
                 * to the JID when instantiating a new Strophe.Connection object.
                 */
                return connection.authcid === connection.authzid ? '' : connection.authzid;
              }

            }

            const utils = {
              utf16to8: function (str) {
                var i, c;
                var out = "";
                var len = str.length;

                for (i = 0; i < len; i++) {
                  c = str.charCodeAt(i);

                  if (c >= 0x0000 && c <= 0x007F) {
                    out += str.charAt(i);
                  } else if (c > 0x07FF) {
                    out += String.fromCharCode(0xE0 | c >> 12 & 0x0F);
                    out += String.fromCharCode(0x80 | c >> 6 & 0x3F);
                    out += String.fromCharCode(0x80 | c >> 0 & 0x3F);
                  } else {
                    out += String.fromCharCode(0xC0 | c >> 6 & 0x1F);
                    out += String.fromCharCode(0x80 | c >> 0 & 0x3F);
                  }
                }

                return out;
              },
              addCookies: function (cookies) {
                /* Parameters:
                 *  (Object) cookies - either a map of cookie names
                 *    to string values or to maps of cookie values.
                 *
                 * For example:
                 * { "myCookie": "1234" }
                 *
                 * or:
                 * { "myCookie": {
                 *      "value": "1234",
                 *      "domain": ".example.org",
                 *      "path": "/",
                 *      "expires": expirationDate
                 *      }
                 *  }
                 *
                 *  These values get passed to Strophe.Connection via
                 *   options.cookies
                 */
                cookies = cookies || {};

                for (const cookieName in cookies) {
                  if (Object.prototype.hasOwnProperty.call(cookies, cookieName)) {
                    let expires = '';
                    let domain = '';
                    let path = '';
                    const cookieObj = cookies[cookieName];
                    const isObj = typeof cookieObj === "object";
                    const cookieValue = escape(unescape(isObj ? cookieObj.value : cookieObj));

                    if (isObj) {
                      expires = cookieObj.expires ? ";expires=" + cookieObj.expires : '';
                      domain = cookieObj.domain ? ";domain=" + cookieObj.domain : '';
                      path = cookieObj.path ? ";path=" + cookieObj.path : '';
                    }

                    document.cookie = cookieName + '=' + cookieValue + expires + domain + path;
                  }
                }
              }
            };

            class SASLOAuthBearer extends SASLMechanism {
              /** PrivateConstructor: SASLOAuthBearer
               *  SASL OAuth Bearer authentication.
               */
              constructor() {
                let mechname = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'OAUTHBEARER';
                let isClientFirst = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
                let priority = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 40;
                super(mechname, isClientFirst, priority);
              }

              test(connection) {
                // eslint-disable-line class-methods-use-this
                return connection.pass !== null;
              }

              onChallenge(connection) {
                // eslint-disable-line class-methods-use-this
                let auth_str = 'n,';

                if (connection.authcid !== null) {
                  auth_str = auth_str + 'a=' + connection.authzid;
                }

                auth_str = auth_str + ',';
                auth_str = auth_str + "\u0001";
                auth_str = auth_str + 'auth=Bearer ';
                auth_str = auth_str + connection.pass;
                auth_str = auth_str + "\u0001";
                auth_str = auth_str + "\u0001";
                return utils.utf16to8(auth_str);
              }

            }

            class SASLPlain extends SASLMechanism {
              /** PrivateConstructor: SASLPlain
               *  SASL PLAIN authentication.
               */
              constructor() {
                let mechname = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'PLAIN';
                let isClientFirst = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
                let priority = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 50;
                super(mechname, isClientFirst, priority);
              }

              test(connection) {
                // eslint-disable-line class-methods-use-this
                return connection.authcid !== null;
              }

              onChallenge(connection) {
                // eslint-disable-line class-methods-use-this
                const {
                  authcid,
                  authzid,
                  domain,
                  pass
                } = connection;

                if (!domain) {
                  throw new Error("SASLPlain onChallenge: domain is not defined!");
                } // Only include authzid if it differs from authcid.
                // See: https://tools.ietf.org/html/rfc6120#section-6.3.8


                let auth_str = authzid !== `${authcid}@${domain}` ? authzid : '';
                auth_str = auth_str + "\u0000";
                auth_str = auth_str + authcid;
                auth_str = auth_str + "\u0000";
                auth_str = auth_str + pass;
                return utils.utf16to8(auth_str);
              }

            }

            /*
             * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
             * in FIPS PUB 180-1
             * Version 2.1a Copyright Paul Johnston 2000 - 2002.
             * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
             * Distributed under the BSD License
             * See http://pajhome.org.uk/crypt/md5 for details.
             */

            /* global define */

            /* Some functions and variables have been stripped for use with Strophe */

            /*
             * Calculate the SHA-1 of an array of big-endian words, and a bit length
             */
            function core_sha1(x, len) {
              /* append padding */
              x[len >> 5] |= 0x80 << 24 - len % 32;
              x[(len + 64 >> 9 << 4) + 15] = len;
              var w = new Array(80);
              var a = 1732584193;
              var b = -271733879;
              var c = -1732584194;
              var d = 271733878;
              var e = -1009589776;
              var i, j, t, olda, oldb, oldc, oldd, olde;

              for (i = 0; i < x.length; i += 16) {
                olda = a;
                oldb = b;
                oldc = c;
                oldd = d;
                olde = e;

                for (j = 0; j < 80; j++) {
                  if (j < 16) {
                    w[j] = x[i + j];
                  } else {
                    w[j] = rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
                  }

                  t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));
                  e = d;
                  d = c;
                  c = rol(b, 30);
                  b = a;
                  a = t;
                }

                a = safe_add(a, olda);
                b = safe_add(b, oldb);
                c = safe_add(c, oldc);
                d = safe_add(d, oldd);
                e = safe_add(e, olde);
              }

              return [a, b, c, d, e];
            }
            /*
             * Perform the appropriate triplet combination function for the current
             * iteration
             */


            function sha1_ft(t, b, c, d) {
              if (t < 20) {
                return b & c | ~b & d;
              }

              if (t < 40) {
                return b ^ c ^ d;
              }

              if (t < 60) {
                return b & c | b & d | c & d;
              }

              return b ^ c ^ d;
            }
            /*
             * Determine the appropriate additive constant for the current iteration
             */


            function sha1_kt(t) {
              return t < 20 ? 1518500249 : t < 40 ? 1859775393 : t < 60 ? -1894007588 : -899497514;
            }
            /*
             * Calculate the HMAC-SHA1 of a key and some data
             */


            function core_hmac_sha1(key, data) {
              var bkey = str2binb(key);

              if (bkey.length > 16) {
                bkey = core_sha1(bkey, key.length * 8);
              }

              var ipad = new Array(16),
                  opad = new Array(16);

              for (var i = 0; i < 16; i++) {
                ipad[i] = bkey[i] ^ 0x36363636;
                opad[i] = bkey[i] ^ 0x5C5C5C5C;
              }

              var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * 8);
              return core_sha1(opad.concat(hash), 512 + 160);
            }
            /*
             * Add integers, wrapping at 2^32. This uses 16-bit operations internally
             * to work around bugs in some JS interpreters.
             */


            function safe_add(x, y) {
              var lsw = (x & 0xFFFF) + (y & 0xFFFF);
              var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
              return msw << 16 | lsw & 0xFFFF;
            }
            /*
             * Bitwise rotate a 32-bit number to the left.
             */


            function rol(num, cnt) {
              return num << cnt | num >>> 32 - cnt;
            }
            /*
             * Convert an 8-bit or 16-bit string to an array of big-endian words
             * In 8-bit function, characters >255 have their hi-byte silently ignored.
             */


            function str2binb(str) {
              var bin = [];
              var mask = 255;

              for (var i = 0; i < str.length * 8; i += 8) {
                bin[i >> 5] |= (str.charCodeAt(i / 8) & mask) << 24 - i % 32;
              }

              return bin;
            }
            /*
             * Convert an array of big-endian words to a base-64 string
             */


            function binb2b64(binarray) {
              var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
              var str = "";
              var triplet, j;

              for (var i = 0; i < binarray.length * 4; i += 3) {
                triplet = (binarray[i >> 2] >> 8 * (3 - i % 4) & 0xFF) << 16 | (binarray[i + 1 >> 2] >> 8 * (3 - (i + 1) % 4) & 0xFF) << 8 | binarray[i + 2 >> 2] >> 8 * (3 - (i + 2) % 4) & 0xFF;

                for (j = 0; j < 4; j++) {
                  if (i * 8 + j * 6 > binarray.length * 32) {
                    str += "=";
                  } else {
                    str += tab.charAt(triplet >> 6 * (3 - j) & 0x3F);
                  }
                }
              }

              return str;
            }
            /*
             * Convert an array of big-endian words to a string
             */


            function binb2str(bin) {
              var str = "";
              var mask = 255;

              for (var i = 0; i < bin.length * 32; i += 8) {
                str += String.fromCharCode(bin[i >> 5] >>> 24 - i % 32 & mask);
              }

              return str;
            }
            /*
             * These are the functions you'll usually want to call
             * They take string arguments and return either hex or base-64 encoded strings
             */


            const SHA1 = {
              b64_hmac_sha1: function (key, data) {
                return binb2b64(core_hmac_sha1(key, data));
              },
              b64_sha1: function (s) {
                return binb2b64(core_sha1(str2binb(s), s.length * 8));
              },
              binb2str: binb2str,
              core_hmac_sha1: core_hmac_sha1,
              str_hmac_sha1: function (key, data) {
                return binb2str(core_hmac_sha1(key, data));
              },
              str_sha1: function (s) {
                return binb2str(core_sha1(str2binb(s), s.length * 8));
              }
            };

            class SASLSHA1 extends SASLMechanism {
              /** PrivateConstructor: SASLSHA1
               *  SASL SCRAM SHA 1 authentication.
               */
              constructor() {
                let mechname = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'SCRAM-SHA-1';
                let isClientFirst = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
                let priority = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 60;
                super(mechname, isClientFirst, priority);
              }

              test(connection) {
                // eslint-disable-line class-methods-use-this
                return connection.authcid !== null;
              }

              onChallenge(connection, challenge) {
                // eslint-disable-line class-methods-use-this
                let nonce, salt, iter, Hi, U, U_old, i, k;
                let responseText = "c=biws,";
                let authMessage = `${connection._sasl_data["client-first-message-bare"]},${challenge},`;
                const cnonce = connection._sasl_data.cnonce;
                const attribMatch = /([a-z]+)=([^,]+)(,|$)/;

                while (challenge.match(attribMatch)) {
                  const matches = challenge.match(attribMatch);
                  challenge = challenge.replace(matches[0], "");

                  switch (matches[1]) {
                    case "r":
                      nonce = matches[2];
                      break;

                    case "s":
                      salt = matches[2];
                      break;

                    case "i":
                      iter = matches[2];
                      break;
                  }
                }

                if (nonce.slice(0, cnonce.length) !== cnonce) {
                  connection._sasl_data = {};
                  return connection._sasl_failure_cb();
                }

                responseText += "r=" + nonce;
                authMessage += responseText;
                salt = atob(salt);
                salt += "\x00\x00\x00\x01";
                const pass = utils.utf16to8(connection.pass);
                Hi = U_old = SHA1.core_hmac_sha1(pass, salt);

                for (i = 1; i < iter; i++) {
                  U = SHA1.core_hmac_sha1(pass, SHA1.binb2str(U_old));

                  for (k = 0; k < 5; k++) {
                    Hi[k] ^= U[k];
                  }

                  U_old = U;
                }

                Hi = SHA1.binb2str(Hi);
                const clientKey = SHA1.core_hmac_sha1(Hi, "Client Key");
                const serverKey = SHA1.str_hmac_sha1(Hi, "Server Key");
                const clientSignature = SHA1.core_hmac_sha1(SHA1.str_sha1(SHA1.binb2str(clientKey)), authMessage);
                connection._sasl_data["server-signature"] = SHA1.b64_hmac_sha1(serverKey, authMessage);

                for (k = 0; k < 5; k++) {
                  clientKey[k] ^= clientSignature[k];
                }

                responseText += ",p=" + btoa(SHA1.binb2str(clientKey));
                return responseText;
              }

              clientChallenge(connection, test_cnonce) {
                // eslint-disable-line class-methods-use-this
                const cnonce = test_cnonce || MD5.hexdigest("" + Math.random() * 1234567890);
                let auth_str = "n=" + utils.utf16to8(connection.authcid);
                auth_str += ",r=";
                auth_str += cnonce;
                connection._sasl_data.cnonce = cnonce;
                connection._sasl_data["client-first-message-bare"] = auth_str;
                auth_str = "n,," + auth_str;
                return auth_str;
              }

            }

            class SASLXOAuth2 extends SASLMechanism {
              /** PrivateConstructor: SASLXOAuth2
               *  SASL X-OAuth2 authentication.
               */
              constructor() {
                let mechname = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'X-OAUTH2';
                let isClientFirst = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
                let priority = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 30;
                super(mechname, isClientFirst, priority);
              }

              test(connection) {
                // eslint-disable-line class-methods-use-this
                return connection.pass !== null;
              }

              onChallenge(connection) {
                // eslint-disable-line class-methods-use-this
                let auth_str = '\u0000';

                if (connection.authcid !== null) {
                  auth_str = auth_str + connection.authzid;
                }

                auth_str = auth_str + "\u0000";
                auth_str = auth_str + connection.pass;
                return utils.utf16to8(auth_str);
              }

            }

            /**
             * Implementation of atob() according to the HTML and Infra specs, except that
             * instead of throwing INVALID_CHARACTER_ERR we return null.
             */

            function atob$2(data) {
              if (arguments.length === 0) {
                throw new TypeError("1 argument required, but only 0 present.");
              } // Web IDL requires DOMStrings to just be converted using ECMAScript
              // ToString, which in our case amounts to using a template literal.


              data = `${data}`; // "Remove all ASCII whitespace from data."

              data = data.replace(/[ \t\n\f\r]/g, ""); // "If data's length divides by 4 leaving no remainder, then: if data ends
              // with one or two U+003D (=) code points, then remove them from data."

              if (data.length % 4 === 0) {
                data = data.replace(/==?$/, "");
              } // "If data's length divides by 4 leaving a remainder of 1, then return
              // failure."
              //
              // "If data contains a code point that is not one of
              //
              // U+002B (+)
              // U+002F (/)
              // ASCII alphanumeric
              //
              // then return failure."


              if (data.length % 4 === 1 || /[^+/0-9A-Za-z]/.test(data)) {
                return null;
              } // "Let output be an empty byte sequence."


              let output = ""; // "Let buffer be an empty buffer that can have bits appended to it."
              //
              // We append bits via left-shift and or.  accumulatedBits is used to track
              // when we've gotten to 24 bits.

              let buffer = 0;
              let accumulatedBits = 0; // "Let position be a position variable for data, initially pointing at the
              // start of data."
              //
              // "While position does not point past the end of data:"

              for (let i = 0; i < data.length; i++) {
                // "Find the code point pointed to by position in the second column of
                // Table 1: The Base 64 Alphabet of RFC 4648. Let n be the number given in
                // the first cell of the same row.
                //
                // "Append to buffer the six bits corresponding to n, most significant bit
                // first."
                //
                // atobLookup() implements the table from RFC 4648.
                buffer <<= 6;
                buffer |= atobLookup(data[i]);
                accumulatedBits += 6; // "If buffer has accumulated 24 bits, interpret them as three 8-bit
                // big-endian numbers. Append three bytes with values equal to those
                // numbers to output, in the same order, and then empty buffer."

                if (accumulatedBits === 24) {
                  output += String.fromCharCode((buffer & 0xff0000) >> 16);
                  output += String.fromCharCode((buffer & 0xff00) >> 8);
                  output += String.fromCharCode(buffer & 0xff);
                  buffer = accumulatedBits = 0;
                } // "Advance position by 1."

              } // "If buffer is not empty, it contains either 12 or 18 bits. If it contains
              // 12 bits, then discard the last four and interpret the remaining eight as
              // an 8-bit big-endian number. If it contains 18 bits, then discard the last
              // two and interpret the remaining 16 as two 8-bit big-endian numbers. Append
              // the one or two bytes with values equal to those one or two numbers to
              // output, in the same order."


              if (accumulatedBits === 12) {
                buffer >>= 4;
                output += String.fromCharCode(buffer);
              } else if (accumulatedBits === 18) {
                buffer >>= 2;
                output += String.fromCharCode((buffer & 0xff00) >> 8);
                output += String.fromCharCode(buffer & 0xff);
              } // "Return output."


              return output;
            }
            /**
             * A lookup table for atob(), which converts an ASCII character to the
             * corresponding six-bit number.
             */


            const keystr$1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

            function atobLookup(chr) {
              const index = keystr$1.indexOf(chr); // Throw exception if character is not in the lookup string; should not be hit in tests

              return index < 0 ? undefined : index;
            }

            var atob_1 = atob$2;

            /**
             * btoa() as defined by the HTML and Infra specs, which mostly just references
             * RFC 4648.
             */

            function btoa$2(s) {
              if (arguments.length === 0) {
                throw new TypeError("1 argument required, but only 0 present.");
              }

              let i; // String conversion as required by Web IDL.

              s = `${s}`; // "The btoa() method must throw an "InvalidCharacterError" DOMException if
              // data contains any character whose code point is greater than U+00FF."

              for (i = 0; i < s.length; i++) {
                if (s.charCodeAt(i) > 255) {
                  return null;
                }
              }

              let out = "";

              for (i = 0; i < s.length; i += 3) {
                const groupsOfSix = [undefined, undefined, undefined, undefined];
                groupsOfSix[0] = s.charCodeAt(i) >> 2;
                groupsOfSix[1] = (s.charCodeAt(i) & 0x03) << 4;

                if (s.length > i + 1) {
                  groupsOfSix[1] |= s.charCodeAt(i + 1) >> 4;
                  groupsOfSix[2] = (s.charCodeAt(i + 1) & 0x0f) << 2;
                }

                if (s.length > i + 2) {
                  groupsOfSix[2] |= s.charCodeAt(i + 2) >> 6;
                  groupsOfSix[3] = s.charCodeAt(i + 2) & 0x3f;
                }

                for (let j = 0; j < groupsOfSix.length; j++) {
                  if (typeof groupsOfSix[j] === "undefined") {
                    out += "=";
                  } else {
                    out += btoaLookup(groupsOfSix[j]);
                  }
                }
              }

              return out;
            }
            /**
             * Lookup table for btoa(), which converts a six-bit number into the
             * corresponding ASCII character.
             */


            const keystr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

            function btoaLookup(index) {
              if (index >= 0 && index < 64) {
                return keystr[index];
              } // Throw INVALID_CHARACTER_ERR exception here -- won't be hit in the tests.


              return undefined;
            }

            var btoa_1 = btoa$2;

            const atob$1 = atob_1;

            const btoa$1 = btoa_1;

            var abab = {
              atob: atob$1,
              btoa: btoa$1
            };

            /*
                This program is distributed under the terms of the MIT license.
                Please see the LICENSE file for details.

                Copyright 2006-2018, OGG, LLC
            */
            /** Function: $build
             *  Create a Strophe.Builder.
             *  This is an alias for 'new Strophe.Builder(name, attrs)'.
             *
             *  Parameters:
             *    (String) name - The root element name.
             *    (Object) attrs - The attributes for the root element in object notation.
             *
             *  Returns:
             *    A new Strophe.Builder object.
             */

            function $build(name, attrs) {
              return new Strophe.Builder(name, attrs);
            }
            /** Function: $msg
             *  Create a Strophe.Builder with a <message/> element as the root.
             *
             *  Parameters:
             *    (Object) attrs - The <message/> element attributes in object notation.
             *
             *  Returns:
             *    A new Strophe.Builder object.
             */

            function $msg(attrs) {
              return new Strophe.Builder("message", attrs);
            }
            /** Function: $iq
             *  Create a Strophe.Builder with an <iq/> element as the root.
             *
             *  Parameters:
             *    (Object) attrs - The <iq/> element attributes in object notation.
             *
             *  Returns:
             *    A new Strophe.Builder object.
             */

            function $iq(attrs) {
              return new Strophe.Builder("iq", attrs);
            }
            /** Function: $pres
             *  Create a Strophe.Builder with a <presence/> element as the root.
             *
             *  Parameters:
             *    (Object) attrs - The <presence/> element attributes in object notation.
             *
             *  Returns:
             *    A new Strophe.Builder object.
             */

            function $pres(attrs) {
              return new Strophe.Builder("presence", attrs);
            }
            /** Class: Strophe
             *  An object container for all Strophe library functions.
             *
             *  This class is just a container for all the objects and constants
             *  used in the library.  It is not meant to be instantiated, but to
             *  provide a namespace for library objects, constants, and functions.
             */

            const Strophe = {
              /** Constant: VERSION */
              VERSION: "1.5.0",

              /** Constants: XMPP Namespace Constants
               *  Common namespace constants from the XMPP RFCs and XEPs.
               *
               *  NS.HTTPBIND - HTTP BIND namespace from XEP 124.
               *  NS.BOSH - BOSH namespace from XEP 206.
               *  NS.CLIENT - Main XMPP client namespace.
               *  NS.AUTH - Legacy authentication namespace.
               *  NS.ROSTER - Roster operations namespace.
               *  NS.PROFILE - Profile namespace.
               *  NS.DISCO_INFO - Service discovery info namespace from XEP 30.
               *  NS.DISCO_ITEMS - Service discovery items namespace from XEP 30.
               *  NS.MUC - Multi-User Chat namespace from XEP 45.
               *  NS.SASL - XMPP SASL namespace from RFC 3920.
               *  NS.STREAM - XMPP Streams namespace from RFC 3920.
               *  NS.BIND - XMPP Binding namespace from RFC 3920 and RFC 6120.
               *  NS.SESSION - XMPP Session namespace from RFC 3920.
               *  NS.XHTML_IM - XHTML-IM namespace from XEP 71.
               *  NS.XHTML - XHTML body namespace from XEP 71.
               */
              NS: {
                HTTPBIND: "http://jabber.org/protocol/httpbind",
                BOSH: "urn:xmpp:xbosh",
                CLIENT: "jabber:client",
                AUTH: "jabber:iq:auth",
                ROSTER: "jabber:iq:roster",
                PROFILE: "jabber:iq:profile",
                DISCO_INFO: "http://jabber.org/protocol/disco#info",
                DISCO_ITEMS: "http://jabber.org/protocol/disco#items",
                MUC: "http://jabber.org/protocol/muc",
                SASL: "urn:ietf:params:xml:ns:xmpp-sasl",
                STREAM: "http://etherx.jabber.org/streams",
                FRAMING: "urn:ietf:params:xml:ns:xmpp-framing",
                BIND: "urn:ietf:params:xml:ns:xmpp-bind",
                SESSION: "urn:ietf:params:xml:ns:xmpp-session",
                VERSION: "jabber:iq:version",
                STANZAS: "urn:ietf:params:xml:ns:xmpp-stanzas",
                XHTML_IM: "http://jabber.org/protocol/xhtml-im",
                XHTML: "http://www.w3.org/1999/xhtml"
              },

              /** Constants: XHTML_IM Namespace
               *  contains allowed tags, tag attributes, and css properties.
               *  Used in the createHtml function to filter incoming html into the allowed XHTML-IM subset.
               *  See http://xmpp.org/extensions/xep-0071.html#profile-summary for the list of recommended
               *  allowed tags and their attributes.
               */
              XHTML: {
                tags: ['a', 'blockquote', 'br', 'cite', 'em', 'img', 'li', 'ol', 'p', 'span', 'strong', 'ul', 'body'],
                attributes: {
                  'a': ['href'],
                  'blockquote': ['style'],
                  'br': [],
                  'cite': ['style'],
                  'em': [],
                  'img': ['src', 'alt', 'style', 'height', 'width'],
                  'li': ['style'],
                  'ol': ['style'],
                  'p': ['style'],
                  'span': ['style'],
                  'strong': [],
                  'ul': ['style'],
                  'body': []
                },
                css: ['background-color', 'color', 'font-family', 'font-size', 'font-style', 'font-weight', 'margin-left', 'margin-right', 'text-align', 'text-decoration'],

                /** Function: XHTML.validTag
                 *
                 * Utility method to determine whether a tag is allowed
                 * in the XHTML_IM namespace.
                 *
                 * XHTML tag names are case sensitive and must be lower case.
                 */
                validTag(tag) {
                  for (let i = 0; i < Strophe.XHTML.tags.length; i++) {
                    if (tag === Strophe.XHTML.tags[i]) {
                      return true;
                    }
                  }

                  return false;
                },

                /** Function: XHTML.validAttribute
                 *
                 * Utility method to determine whether an attribute is allowed
                 * as recommended per XEP-0071
                 *
                 * XHTML attribute names are case sensitive and must be lower case.
                 */
                validAttribute(tag, attribute) {
                  if (typeof Strophe.XHTML.attributes[tag] !== 'undefined' && Strophe.XHTML.attributes[tag].length > 0) {
                    for (let i = 0; i < Strophe.XHTML.attributes[tag].length; i++) {
                      if (attribute === Strophe.XHTML.attributes[tag][i]) {
                        return true;
                      }
                    }
                  }

                  return false;
                },

                validCSS(style) {
                  for (let i = 0; i < Strophe.XHTML.css.length; i++) {
                    if (style === Strophe.XHTML.css[i]) {
                      return true;
                    }
                  }

                  return false;
                }

              },

              /** Constants: Connection Status Constants
               *  Connection status constants for use by the connection handler
               *  callback.
               *
               *  Status.ERROR - An error has occurred
               *  Status.CONNECTING - The connection is currently being made
               *  Status.CONNFAIL - The connection attempt failed
               *  Status.AUTHENTICATING - The connection is authenticating
               *  Status.AUTHFAIL - The authentication attempt failed
               *  Status.CONNECTED - The connection has succeeded
               *  Status.DISCONNECTED - The connection has been terminated
               *  Status.DISCONNECTING - The connection is currently being terminated
               *  Status.ATTACHED - The connection has been attached
               *  Status.REDIRECT - The connection has been redirected
               *  Status.CONNTIMEOUT - The connection has timed out
               */
              Status: {
                ERROR: 0,
                CONNECTING: 1,
                CONNFAIL: 2,
                AUTHENTICATING: 3,
                AUTHFAIL: 4,
                CONNECTED: 5,
                DISCONNECTED: 6,
                DISCONNECTING: 7,
                ATTACHED: 8,
                REDIRECT: 9,
                CONNTIMEOUT: 10,
                BINDREQUIRED: 11,
                ATTACHFAIL: 12
              },
              ErrorCondition: {
                BAD_FORMAT: "bad-format",
                CONFLICT: "conflict",
                MISSING_JID_NODE: "x-strophe-bad-non-anon-jid",
                NO_AUTH_MECH: "no-auth-mech",
                UNKNOWN_REASON: "unknown"
              },

              /** Constants: Log Level Constants
               *  Logging level indicators.
               *
               *  LogLevel.DEBUG - Debug output
               *  LogLevel.INFO - Informational output
               *  LogLevel.WARN - Warnings
               *  LogLevel.ERROR - Errors
               *  LogLevel.FATAL - Fatal errors
               */
              LogLevel: {
                DEBUG: 0,
                INFO: 1,
                WARN: 2,
                ERROR: 3,
                FATAL: 4
              },

              /** PrivateConstants: DOM Element Type Constants
               *  DOM element types.
               *
               *  ElementType.NORMAL - Normal element.
               *  ElementType.TEXT - Text data element.
               *  ElementType.FRAGMENT - XHTML fragment element.
               */
              ElementType: {
                NORMAL: 1,
                TEXT: 3,
                CDATA: 4,
                FRAGMENT: 11
              },

              /** PrivateConstants: Timeout Values
               *  Timeout values for error states.  These values are in seconds.
               *  These should not be changed unless you know exactly what you are
               *  doing.
               *
               *  TIMEOUT - Timeout multiplier. A waiting request will be considered
               *      failed after Math.floor(TIMEOUT * wait) seconds have elapsed.
               *      This defaults to 1.1, and with default wait, 66 seconds.
               *  SECONDARY_TIMEOUT - Secondary timeout multiplier. In cases where
               *      Strophe can detect early failure, it will consider the request
               *      failed if it doesn't return after
               *      Math.floor(SECONDARY_TIMEOUT * wait) seconds have elapsed.
               *      This defaults to 0.1, and with default wait, 6 seconds.
               */
              TIMEOUT: 1.1,
              SECONDARY_TIMEOUT: 0.1,

              /** Function: addNamespace
               *  This function is used to extend the current namespaces in
               *  Strophe.NS.  It takes a key and a value with the key being the
               *  name of the new namespace, with its actual value.
               *  For example:
               *  Strophe.addNamespace('PUBSUB', "http://jabber.org/protocol/pubsub");
               *
               *  Parameters:
               *    (String) name - The name under which the namespace will be
               *      referenced under Strophe.NS
               *    (String) value - The actual namespace.
               */
              addNamespace(name, value) {
                Strophe.NS[name] = value;
              },

              /** Function: forEachChild
               *  Map a function over some or all child elements of a given element.
               *
               *  This is a small convenience function for mapping a function over
               *  some or all of the children of an element.  If elemName is null, all
               *  children will be passed to the function, otherwise only children
               *  whose tag names match elemName will be passed.
               *
               *  Parameters:
               *    (XMLElement) elem - The element to operate on.
               *    (String) elemName - The child element tag name filter.
               *    (Function) func - The function to apply to each child.  This
               *      function should take a single argument, a DOM element.
               */
              forEachChild(elem, elemName, func) {
                for (let i = 0; i < elem.childNodes.length; i++) {
                  const childNode = elem.childNodes[i];

                  if (childNode.nodeType === Strophe.ElementType.NORMAL && (!elemName || this.isTagEqual(childNode, elemName))) {
                    func(childNode);
                  }
                }
              },

              /** Function: isTagEqual
               *  Compare an element's tag name with a string.
               *
               *  This function is case sensitive.
               *
               *  Parameters:
               *    (XMLElement) el - A DOM element.
               *    (String) name - The element name.
               *
               *  Returns:
               *    true if the element's tag name matches _el_, and false
               *    otherwise.
               */
              isTagEqual(el, name) {
                return el.tagName === name;
              },

              /** PrivateVariable: _xmlGenerator
               *  _Private_ variable that caches a DOM document to
               *  generate elements.
               */
              _xmlGenerator: null,

              /** Function: xmlGenerator
               *  Get the DOM document to generate elements.
               *
               *  Returns:
               *    The currently used DOM document.
               */
              xmlGenerator() {
                if (!Strophe._xmlGenerator) {
                  Strophe._xmlGenerator = getDummyXMLDOMDocument();
                }

                return Strophe._xmlGenerator;
              },

              /** Function: xmlElement
               *  Create an XML DOM element.
               *
               *  This function creates an XML DOM element correctly across all
               *  implementations. Note that these are not HTML DOM elements, which
               *  aren't appropriate for XMPP stanzas.
               *
               *  Parameters:
               *    (String) name - The name for the element.
               *    (Array|Object) attrs - An optional array or object containing
               *      key/value pairs to use as element attributes. The object should
               *      be in the format {'key': 'value'} or {key: 'value'}. The array
               *      should have the format [['key1', 'value1'], ['key2', 'value2']].
               *    (String) text - The text child data for the element.
               *
               *  Returns:
               *    A new XML DOM element.
               */
              xmlElement(name) {
                if (!name) {
                  return null;
                }

                const node = Strophe.xmlGenerator().createElement(name); // FIXME: this should throw errors if args are the wrong type or
                // there are more than two optional args

                for (let a = 1; a < arguments.length; a++) {
                  const arg = arguments[a];

                  if (!arg) {
                    continue;
                  }

                  if (typeof arg === "string" || typeof arg === "number") {
                    node.appendChild(Strophe.xmlTextNode(arg));
                  } else if (typeof arg === "object" && typeof arg.sort === "function") {
                    for (let i = 0; i < arg.length; i++) {
                      const attr = arg[i];

                      if (typeof attr === "object" && typeof attr.sort === "function" && attr[1] !== undefined && attr[1] !== null) {
                        node.setAttribute(attr[0], attr[1]);
                      }
                    }
                  } else if (typeof arg === "object") {
                    for (const k in arg) {
                      if (Object.prototype.hasOwnProperty.call(arg, k) && arg[k] !== undefined && arg[k] !== null) {
                        node.setAttribute(k, arg[k]);
                      }
                    }
                  }
                }

                return node;
              },

              /*  Function: xmlescape
               *  Excapes invalid xml characters.
               *
               *  Parameters:
               *     (String) text - text to escape.
               *
               *  Returns:
               *      Escaped text.
               */
              xmlescape(text) {
                text = text.replace(/\&/g, "&amp;");
                text = text.replace(/</g, "&lt;");
                text = text.replace(/>/g, "&gt;");
                text = text.replace(/'/g, "&apos;");
                text = text.replace(/"/g, "&quot;");
                return text;
              },

              /*  Function: xmlunescape
              *  Unexcapes invalid xml characters.
              *
              *  Parameters:
              *     (String) text - text to unescape.
              *
              *  Returns:
              *      Unescaped text.
              */
              xmlunescape(text) {
                text = text.replace(/\&amp;/g, "&");
                text = text.replace(/&lt;/g, "<");
                text = text.replace(/&gt;/g, ">");
                text = text.replace(/&apos;/g, "'");
                text = text.replace(/&quot;/g, "\"");
                return text;
              },

              /** Function: xmlTextNode
               *  Creates an XML DOM text node.
               *
               *  Provides a cross implementation version of document.createTextNode.
               *
               *  Parameters:
               *    (String) text - The content of the text node.
               *
               *  Returns:
               *    A new XML DOM text node.
               */
              xmlTextNode(text) {
                return Strophe.xmlGenerator().createTextNode(text);
              },

              /** Function: xmlHtmlNode
               *  Creates an XML DOM html node.
               *
               *  Parameters:
               *    (String) html - The content of the html node.
               *
               *  Returns:
               *    A new XML DOM text node.
               */
              xmlHtmlNode(html) {
                let node; //ensure text is escaped

                if (DOMParser) {
                  const parser = new DOMParser();
                  node = parser.parseFromString(html, "text/xml");
                } else {
                  node = new ActiveXObject("Microsoft.XMLDOM");
                  node.async = "false";
                  node.loadXML(html);
                }

                return node;
              },

              /** Function: getText
               *  Get the concatenation of all text children of an element.
               *
               *  Parameters:
               *    (XMLElement) elem - A DOM element.
               *
               *  Returns:
               *    A String with the concatenated text of all text element children.
               */
              getText(elem) {
                if (!elem) {
                  return null;
                }

                let str = "";

                if (elem.childNodes.length === 0 && elem.nodeType === Strophe.ElementType.TEXT) {
                  str += elem.nodeValue;
                }

                for (let i = 0; i < elem.childNodes.length; i++) {
                  if (elem.childNodes[i].nodeType === Strophe.ElementType.TEXT) {
                    str += elem.childNodes[i].nodeValue;
                  }
                }

                return Strophe.xmlescape(str);
              },

              /** Function: copyElement
               *  Copy an XML DOM element.
               *
               *  This function copies a DOM element and all its descendants and returns
               *  the new copy.
               *
               *  Parameters:
               *    (XMLElement) elem - A DOM element.
               *
               *  Returns:
               *    A new, copied DOM element tree.
               */
              copyElement(elem) {
                let el;

                if (elem.nodeType === Strophe.ElementType.NORMAL) {
                  el = Strophe.xmlElement(elem.tagName);

                  for (let i = 0; i < elem.attributes.length; i++) {
                    el.setAttribute(elem.attributes[i].nodeName, elem.attributes[i].value);
                  }

                  for (let i = 0; i < elem.childNodes.length; i++) {
                    el.appendChild(Strophe.copyElement(elem.childNodes[i]));
                  }
                } else if (elem.nodeType === Strophe.ElementType.TEXT) {
                  el = Strophe.xmlGenerator().createTextNode(elem.nodeValue);
                }

                return el;
              },

              /** Function: createHtml
               *  Copy an HTML DOM element into an XML DOM.
               *
               *  This function copies a DOM element and all its descendants and returns
               *  the new copy.
               *
               *  Parameters:
               *    (HTMLElement) elem - A DOM element.
               *
               *  Returns:
               *    A new, copied DOM element tree.
               */
              createHtml(elem) {
                let el;

                if (elem.nodeType === Strophe.ElementType.NORMAL) {
                  const tag = elem.nodeName.toLowerCase(); // XHTML tags must be lower case.

                  if (Strophe.XHTML.validTag(tag)) {
                    try {
                      el = Strophe.xmlElement(tag);

                      for (let i = 0; i < Strophe.XHTML.attributes[tag].length; i++) {
                        const attribute = Strophe.XHTML.attributes[tag][i];
                        let value = elem.getAttribute(attribute);

                        if (typeof value === 'undefined' || value === null || value === '' || value === false || value === 0) {
                          continue;
                        }

                        if (attribute === 'style' && typeof value === 'object' && typeof value.cssText !== 'undefined') {
                          value = value.cssText; // we're dealing with IE, need to get CSS out
                        } // filter out invalid css styles


                        if (attribute === 'style') {
                          const css = [];
                          const cssAttrs = value.split(';');

                          for (let j = 0; j < cssAttrs.length; j++) {
                            const attr = cssAttrs[j].split(':');
                            const cssName = attr[0].replace(/^\s*/, "").replace(/\s*$/, "").toLowerCase();

                            if (Strophe.XHTML.validCSS(cssName)) {
                              const cssValue = attr[1].replace(/^\s*/, "").replace(/\s*$/, "");
                              css.push(cssName + ': ' + cssValue);
                            }
                          }

                          if (css.length > 0) {
                            value = css.join('; ');
                            el.setAttribute(attribute, value);
                          }
                        } else {
                          el.setAttribute(attribute, value);
                        }
                      }

                      for (let i = 0; i < elem.childNodes.length; i++) {
                        el.appendChild(Strophe.createHtml(elem.childNodes[i]));
                      }
                    } catch (e) {
                      // invalid elements
                      el = Strophe.xmlTextNode('');
                    }
                  } else {
                    el = Strophe.xmlGenerator().createDocumentFragment();

                    for (let i = 0; i < elem.childNodes.length; i++) {
                      el.appendChild(Strophe.createHtml(elem.childNodes[i]));
                    }
                  }
                } else if (elem.nodeType === Strophe.ElementType.FRAGMENT) {
                  el = Strophe.xmlGenerator().createDocumentFragment();

                  for (let i = 0; i < elem.childNodes.length; i++) {
                    el.appendChild(Strophe.createHtml(elem.childNodes[i]));
                  }
                } else if (elem.nodeType === Strophe.ElementType.TEXT) {
                  el = Strophe.xmlTextNode(elem.nodeValue);
                }

                return el;
              },

              /** Function: escapeNode
               *  Escape the node part (also called local part) of a JID.
               *
               *  Parameters:
               *    (String) node - A node (or local part).
               *
               *  Returns:
               *    An escaped node (or local part).
               */
              escapeNode(node) {
                if (typeof node !== "string") {
                  return node;
                }

                return node.replace(/^\s+|\s+$/g, '').replace(/\\/g, "\\5c").replace(/ /g, "\\20").replace(/\"/g, "\\22").replace(/\&/g, "\\26").replace(/\'/g, "\\27").replace(/\//g, "\\2f").replace(/:/g, "\\3a").replace(/</g, "\\3c").replace(/>/g, "\\3e").replace(/@/g, "\\40");
              },

              /** Function: unescapeNode
               *  Unescape a node part (also called local part) of a JID.
               *
               *  Parameters:
               *    (String) node - A node (or local part).
               *
               *  Returns:
               *    An unescaped node (or local part).
               */
              unescapeNode(node) {
                if (typeof node !== "string") {
                  return node;
                }

                return node.replace(/\\20/g, " ").replace(/\\22/g, '"').replace(/\\26/g, "&").replace(/\\27/g, "'").replace(/\\2f/g, "/").replace(/\\3a/g, ":").replace(/\\3c/g, "<").replace(/\\3e/g, ">").replace(/\\40/g, "@").replace(/\\5c/g, "\\");
              },

              /** Function: getNodeFromJid
               *  Get the node portion of a JID String.
               *
               *  Parameters:
               *    (String) jid - A JID.
               *
               *  Returns:
               *    A String containing the node.
               */
              getNodeFromJid(jid) {
                if (jid.indexOf("@") < 0) {
                  return null;
                }

                return jid.split("@")[0];
              },

              /** Function: getDomainFromJid
               *  Get the domain portion of a JID String.
               *
               *  Parameters:
               *    (String) jid - A JID.
               *
               *  Returns:
               *    A String containing the domain.
               */
              getDomainFromJid(jid) {
                const bare = Strophe.getBareJidFromJid(jid);

                if (bare.indexOf("@") < 0) {
                  return bare;
                } else {
                  const parts = bare.split("@");
                  parts.splice(0, 1);
                  return parts.join('@');
                }
              },

              /** Function: getResourceFromJid
               *  Get the resource portion of a JID String.
               *
               *  Parameters:
               *    (String) jid - A JID.
               *
               *  Returns:
               *    A String containing the resource.
               */
              getResourceFromJid(jid) {
                if (!jid) {
                  return null;
                }

                const s = jid.split("/");

                if (s.length < 2) {
                  return null;
                }

                s.splice(0, 1);
                return s.join('/');
              },

              /** Function: getBareJidFromJid
               *  Get the bare JID from a JID String.
               *
               *  Parameters:
               *    (String) jid - A JID.
               *
               *  Returns:
               *    A String containing the bare JID.
               */
              getBareJidFromJid(jid) {
                return jid ? jid.split("/")[0] : null;
              },

              /** PrivateFunction: _handleError
               *  _Private_ function that properly logs an error to the console
               */
              _handleError(e) {
                if (typeof e.stack !== "undefined") {
                  Strophe.fatal(e.stack);
                }

                if (e.sourceURL) {
                  Strophe.fatal("error: " + this.handler + " " + e.sourceURL + ":" + e.line + " - " + e.name + ": " + e.message);
                } else if (e.fileName) {
                  Strophe.fatal("error: " + this.handler + " " + e.fileName + ":" + e.lineNumber + " - " + e.name + ": " + e.message);
                } else {
                  Strophe.fatal("error: " + e.message);
                }
              },

              /** Function: log
               *  User overrideable logging function.
               *
               *  This function is called whenever the Strophe library calls any
               *  of the logging functions.  The default implementation of this
               *  function logs only fatal errors.  If client code wishes to handle the logging
               *  messages, it should override this with
               *  > Strophe.log = function (level, msg) {
               *  >   (user code here)
               *  > };
               *
               *  Please note that data sent and received over the wire is logged
               *  via Strophe.Connection.rawInput() and Strophe.Connection.rawOutput().
               *
               *  The different levels and their meanings are
               *
               *    DEBUG - Messages useful for debugging purposes.
               *    INFO - Informational messages.  This is mostly information like
               *      'disconnect was called' or 'SASL auth succeeded'.
               *    WARN - Warnings about potential problems.  This is mostly used
               *      to report transient connection errors like request timeouts.
               *    ERROR - Some error occurred.
               *    FATAL - A non-recoverable fatal error occurred.
               *
               *  Parameters:
               *    (Integer) level - The log level of the log message.  This will
               *      be one of the values in Strophe.LogLevel.
               *    (String) msg - The log message.
               */
              log(level, msg) {
                if (level === this.LogLevel.FATAL) {
                  var _console;

                  (_console = console) === null || _console === void 0 ? void 0 : _console.error(msg);
                }
              },

              /** Function: debug
               *  Log a message at the Strophe.LogLevel.DEBUG level.
               *
               *  Parameters:
               *    (String) msg - The log message.
               */
              debug(msg) {
                this.log(this.LogLevel.DEBUG, msg);
              },

              /** Function: info
               *  Log a message at the Strophe.LogLevel.INFO level.
               *
               *  Parameters:
               *    (String) msg - The log message.
               */
              info(msg) {
                this.log(this.LogLevel.INFO, msg);
              },

              /** Function: warn
               *  Log a message at the Strophe.LogLevel.WARN level.
               *
               *  Parameters:
               *    (String) msg - The log message.
               */
              warn(msg) {
                this.log(this.LogLevel.WARN, msg);
              },

              /** Function: error
               *  Log a message at the Strophe.LogLevel.ERROR level.
               *
               *  Parameters:
               *    (String) msg - The log message.
               */
              error(msg) {
                this.log(this.LogLevel.ERROR, msg);
              },

              /** Function: fatal
               *  Log a message at the Strophe.LogLevel.FATAL level.
               *
               *  Parameters:
               *    (String) msg - The log message.
               */
              fatal(msg) {
                this.log(this.LogLevel.FATAL, msg);
              },

              /** Function: serialize
               *  Render a DOM element and all descendants to a String.
               *
               *  Parameters:
               *    (XMLElement) elem - A DOM element.
               *
               *  Returns:
               *    The serialized element tree as a String.
               */
              serialize(elem) {
                if (!elem) {
                  return null;
                }

                if (typeof elem.tree === "function") {
                  elem = elem.tree();
                }

                const names = [...Array(elem.attributes.length).keys()].map(i => elem.attributes[i].nodeName);
                names.sort();
                let result = names.reduce((a, n) => `${a} ${n}="${Strophe.xmlescape(elem.attributes.getNamedItem(n).value)}"`, `<${elem.nodeName}`);

                if (elem.childNodes.length > 0) {
                  result += ">";

                  for (let i = 0; i < elem.childNodes.length; i++) {
                    const child = elem.childNodes[i];

                    switch (child.nodeType) {
                      case Strophe.ElementType.NORMAL:
                        // normal element, so recurse
                        result += Strophe.serialize(child);
                        break;

                      case Strophe.ElementType.TEXT:
                        // text element to escape values
                        result += Strophe.xmlescape(child.nodeValue);
                        break;

                      case Strophe.ElementType.CDATA:
                        // cdata section so don't escape values
                        result += "<![CDATA[" + child.nodeValue + "]]>";
                    }
                  }

                  result += "</" + elem.nodeName + ">";
                } else {
                  result += "/>";
                }

                return result;
              },

              /** PrivateVariable: _requestId
               *  _Private_ variable that keeps track of the request ids for
               *  connections.
               */
              _requestId: 0,

              /** PrivateVariable: Strophe.connectionPlugins
               *  _Private_ variable Used to store plugin names that need
               *  initialization on Strophe.Connection construction.
               */
              _connectionPlugins: {},

              /** Function: addConnectionPlugin
               *  Extends the Strophe.Connection object with the given plugin.
               *
               *  Parameters:
               *    (String) name - The name of the extension.
               *    (Object) ptype - The plugin's prototype.
               */
              addConnectionPlugin(name, ptype) {
                Strophe._connectionPlugins[name] = ptype;
              }

            };
            /** Class: Strophe.Builder
             *  XML DOM builder.
             *
             *  This object provides an interface similar to JQuery but for building
             *  DOM elements easily and rapidly.  All the functions except for toString()
             *  and tree() return the object, so calls can be chained.  Here's an
             *  example using the $iq() builder helper.
             *  > $iq({to: 'you', from: 'me', type: 'get', id: '1'})
             *  >     .c('query', {xmlns: 'strophe:example'})
             *  >     .c('example')
             *  >     .toString()
             *
             *  The above generates this XML fragment
             *  > <iq to='you' from='me' type='get' id='1'>
             *  >   <query xmlns='strophe:example'>
             *  >     <example/>
             *  >   </query>
             *  > </iq>
             *  The corresponding DOM manipulations to get a similar fragment would be
             *  a lot more tedious and probably involve several helper variables.
             *
             *  Since adding children makes new operations operate on the child, up()
             *  is provided to traverse up the tree.  To add two children, do
             *  > builder.c('child1', ...).up().c('child2', ...)
             *  The next operation on the Builder will be relative to the second child.
             */

            /** Constructor: Strophe.Builder
             *  Create a Strophe.Builder object.
             *
             *  The attributes should be passed in object notation.  For example
             *  > let b = new Builder('message', {to: 'you', from: 'me'});
             *  or
             *  > let b = new Builder('messsage', {'xml:lang': 'en'});
             *
             *  Parameters:
             *    (String) name - The name of the root element.
             *    (Object) attrs - The attributes for the root element in object notation.
             *
             *  Returns:
             *    A new Strophe.Builder.
             */

            Strophe.Builder = class Builder {
              constructor(name, attrs) {
                // Set correct namespace for jabber:client elements
                if (name === "presence" || name === "message" || name === "iq") {
                  if (attrs && !attrs.xmlns) {
                    attrs.xmlns = Strophe.NS.CLIENT;
                  } else if (!attrs) {
                    attrs = {
                      xmlns: Strophe.NS.CLIENT
                    };
                  }
                } // Holds the tree being built.


                this.nodeTree = Strophe.xmlElement(name, attrs); // Points to the current operation node.

                this.node = this.nodeTree;
              }
              /** Function: tree
               *  Return the DOM tree.
               *
               *  This function returns the current DOM tree as an element object.  This
               *  is suitable for passing to functions like Strophe.Connection.send().
               *
               *  Returns:
               *    The DOM tree as a element object.
               */


              tree() {
                return this.nodeTree;
              }
              /** Function: toString
               *  Serialize the DOM tree to a String.
               *
               *  This function returns a string serialization of the current DOM
               *  tree.  It is often used internally to pass data to a
               *  Strophe.Request object.
               *
               *  Returns:
               *    The serialized DOM tree in a String.
               */


              toString() {
                return Strophe.serialize(this.nodeTree);
              }
              /** Function: up
               *  Make the current parent element the new current element.
               *
               *  This function is often used after c() to traverse back up the tree.
               *  For example, to add two children to the same element
               *  > builder.c('child1', {}).up().c('child2', {});
               *
               *  Returns:
               *    The Stophe.Builder object.
               */


              up() {
                this.node = this.node.parentNode;
                return this;
              }
              /** Function: root
               *  Make the root element the new current element.
               *
               *  When at a deeply nested element in the tree, this function can be used
               *  to jump back to the root of the tree, instead of having to repeatedly
               *  call up().
               *
               *  Returns:
               *    The Stophe.Builder object.
               */


              root() {
                this.node = this.nodeTree;
                return this;
              }
              /** Function: attrs
               *  Add or modify attributes of the current element.
               *
               *  The attributes should be passed in object notation.  This function
               *  does not move the current element pointer.
               *
               *  Parameters:
               *    (Object) moreattrs - The attributes to add/modify in object notation.
               *
               *  Returns:
               *    The Strophe.Builder object.
               */


              attrs(moreattrs) {
                for (const k in moreattrs) {
                  if (Object.prototype.hasOwnProperty.call(moreattrs, k)) {
                    if (moreattrs[k] === undefined) {
                      this.node.removeAttribute(k);
                    } else {
                      this.node.setAttribute(k, moreattrs[k]);
                    }
                  }
                }

                return this;
              }
              /** Function: c
               *  Add a child to the current element and make it the new current
               *  element.
               *
               *  This function moves the current element pointer to the child,
               *  unless text is provided.  If you need to add another child, it
               *  is necessary to use up() to go back to the parent in the tree.
               *
               *  Parameters:
               *    (String) name - The name of the child.
               *    (Object) attrs - The attributes of the child in object notation.
               *    (String) text - The text to add to the child.
               *
               *  Returns:
               *    The Strophe.Builder object.
               */


              c(name, attrs, text) {
                const child = Strophe.xmlElement(name, attrs, text);
                this.node.appendChild(child);

                if (typeof text !== "string" && typeof text !== "number") {
                  this.node = child;
                }

                return this;
              }
              /** Function: cnode
               *  Add a child to the current element and make it the new current
               *  element.
               *
               *  This function is the same as c() except that instead of using a
               *  name and an attributes object to create the child it uses an
               *  existing DOM element object.
               *
               *  Parameters:
               *    (XMLElement) elem - A DOM element.
               *
               *  Returns:
               *    The Strophe.Builder object.
               */


              cnode(elem) {
                let impNode;
                const xmlGen = Strophe.xmlGenerator();

                try {
                  impNode = xmlGen.importNode !== undefined;
                } catch (e) {
                  impNode = false;
                }

                const newElem = impNode ? xmlGen.importNode(elem, true) : Strophe.copyElement(elem);
                this.node.appendChild(newElem);
                this.node = newElem;
                return this;
              }
              /** Function: t
               *  Add a child text element.
               *
               *  This *does not* make the child the new current element since there
               *  are no children of text elements.
               *
               *  Parameters:
               *    (String) text - The text data to append to the current element.
               *
               *  Returns:
               *    The Strophe.Builder object.
               */


              t(text) {
                const child = Strophe.xmlTextNode(text);
                this.node.appendChild(child);
                return this;
              }
              /** Function: h
               *  Replace current element contents with the HTML passed in.
               *
               *  This *does not* make the child the new current element
               *
               *  Parameters:
               *    (String) html - The html to insert as contents of current element.
               *
               *  Returns:
               *    The Strophe.Builder object.
               */


              h(html) {
                const fragment = Strophe.xmlGenerator().createElement('body'); // force the browser to try and fix any invalid HTML tags

                fragment.innerHTML = html; // copy cleaned html into an xml dom

                const xhtml = Strophe.createHtml(fragment);

                while (xhtml.childNodes.length > 0) {
                  this.node.appendChild(xhtml.childNodes[0]);
                }

                return this;
              }

            };
            /** PrivateClass: Strophe.Handler
             *  _Private_ helper class for managing stanza handlers.
             *
             *  A Strophe.Handler encapsulates a user provided callback function to be
             *  executed when matching stanzas are received by the connection.
             *  Handlers can be either one-off or persistant depending on their
             *  return value. Returning true will cause a Handler to remain active, and
             *  returning false will remove the Handler.
             *
             *  Users will not use Strophe.Handler objects directly, but instead they
             *  will use Strophe.Connection.addHandler() and
             *  Strophe.Connection.deleteHandler().
             */

            /** PrivateConstructor: Strophe.Handler
             *  Create and initialize a new Strophe.Handler.
             *
             *  Parameters:
             *    (Function) handler - A function to be executed when the handler is run.
             *    (String) ns - The namespace to match.
             *    (String) name - The element name to match.
             *    (String) type - The element type to match.
             *    (String) id - The element id attribute to match.
             *    (String) from - The element from attribute to match.
             *    (Object) options - Handler options
             *
             *  Returns:
             *    A new Strophe.Handler object.
             */

            Strophe.Handler = function (handler, ns, name, type, id, from, options) {
              this.handler = handler;
              this.ns = ns;
              this.name = name;
              this.type = type;
              this.id = id;
              this.options = options || {
                'matchBareFromJid': false,
                'ignoreNamespaceFragment': false
              }; // BBB: Maintain backward compatibility with old `matchBare` option

              if (this.options.matchBare) {
                Strophe.warn('The "matchBare" option is deprecated, use "matchBareFromJid" instead.');
                this.options.matchBareFromJid = this.options.matchBare;
                delete this.options.matchBare;
              }

              if (this.options.matchBareFromJid) {
                this.from = from ? Strophe.getBareJidFromJid(from) : null;
              } else {
                this.from = from;
              } // whether the handler is a user handler or a system handler


              this.user = true;
            };

            Strophe.Handler.prototype = {
              /** PrivateFunction: getNamespace
               *  Returns the XML namespace attribute on an element.
               *  If `ignoreNamespaceFragment` was passed in for this handler, then the
               *  URL fragment will be stripped.
               *
               *  Parameters:
               *    (XMLElement) elem - The XML element with the namespace.
               *
               *  Returns:
               *    The namespace, with optionally the fragment stripped.
               */
              getNamespace(elem) {
                let elNamespace = elem.getAttribute("xmlns");

                if (elNamespace && this.options.ignoreNamespaceFragment) {
                  elNamespace = elNamespace.split('#')[0];
                }

                return elNamespace;
              },

              /** PrivateFunction: namespaceMatch
               *  Tests if a stanza matches the namespace set for this Strophe.Handler.
               *
               *  Parameters:
               *    (XMLElement) elem - The XML element to test.
               *
               *  Returns:
               *    true if the stanza matches and false otherwise.
               */
              namespaceMatch(elem) {
                let nsMatch = false;

                if (!this.ns) {
                  return true;
                } else {
                  Strophe.forEachChild(elem, null, elem => {
                    if (this.getNamespace(elem) === this.ns) {
                      nsMatch = true;
                    }
                  });
                  return nsMatch || this.getNamespace(elem) === this.ns;
                }
              },

              /** PrivateFunction: isMatch
               *  Tests if a stanza matches the Strophe.Handler.
               *
               *  Parameters:
               *    (XMLElement) elem - The XML element to test.
               *
               *  Returns:
               *    true if the stanza matches and false otherwise.
               */
              isMatch(elem) {
                let from = elem.getAttribute('from');

                if (this.options.matchBareFromJid) {
                  from = Strophe.getBareJidFromJid(from);
                }

                const elem_type = elem.getAttribute("type");

                if (this.namespaceMatch(elem) && (!this.name || Strophe.isTagEqual(elem, this.name)) && (!this.type || (Array.isArray(this.type) ? this.type.indexOf(elem_type) !== -1 : elem_type === this.type)) && (!this.id || elem.getAttribute("id") === this.id) && (!this.from || from === this.from)) {
                  return true;
                }

                return false;
              },

              /** PrivateFunction: run
               *  Run the callback on a matching stanza.
               *
               *  Parameters:
               *    (XMLElement) elem - The DOM element that triggered the
               *      Strophe.Handler.
               *
               *  Returns:
               *    A boolean indicating if the handler should remain active.
               */
              run(elem) {
                let result = null;

                try {
                  result = this.handler(elem);
                } catch (e) {
                  Strophe._handleError(e);

                  throw e;
                }

                return result;
              },

              /** PrivateFunction: toString
               *  Get a String representation of the Strophe.Handler object.
               *
               *  Returns:
               *    A String.
               */
              toString() {
                return "{Handler: " + this.handler + "(" + this.name + "," + this.id + "," + this.ns + ")}";
              }

            };
            /** PrivateClass: Strophe.TimedHandler
             *  _Private_ helper class for managing timed handlers.
             *
             *  A Strophe.TimedHandler encapsulates a user provided callback that
             *  should be called after a certain period of time or at regular
             *  intervals.  The return value of the callback determines whether the
             *  Strophe.TimedHandler will continue to fire.
             *
             *  Users will not use Strophe.TimedHandler objects directly, but instead
             *  they will use Strophe.Connection.addTimedHandler() and
             *  Strophe.Connection.deleteTimedHandler().
             */

            Strophe.TimedHandler = class TimedHandler {
              /** PrivateConstructor: Strophe.TimedHandler
               *  Create and initialize a new Strophe.TimedHandler object.
               *
               *  Parameters:
               *    (Integer) period - The number of milliseconds to wait before the
               *      handler is called.
               *    (Function) handler - The callback to run when the handler fires.  This
               *      function should take no arguments.
               *
               *  Returns:
               *    A new Strophe.TimedHandler object.
               */
              constructor(period, handler) {
                this.period = period;
                this.handler = handler;
                this.lastCalled = new Date().getTime();
                this.user = true;
              }
              /** PrivateFunction: run
               *  Run the callback for the Strophe.TimedHandler.
               *
               *  Returns:
               *    true if the Strophe.TimedHandler should be called again, and false
               *      otherwise.
               */


              run() {
                this.lastCalled = new Date().getTime();
                return this.handler();
              }
              /** PrivateFunction: reset
               *  Reset the last called time for the Strophe.TimedHandler.
               */


              reset() {
                this.lastCalled = new Date().getTime();
              }
              /** PrivateFunction: toString
               *  Get a string representation of the Strophe.TimedHandler object.
               *
               *  Returns:
               *    The string representation.
               */


              toString() {
                return "{TimedHandler: " + this.handler + "(" + this.period + ")}";
              }

            };
            /** Class: Strophe.Connection
             *  XMPP Connection manager.
             *
             *  This class is the main part of Strophe.  It manages a BOSH or websocket
             *  connection to an XMPP server and dispatches events to the user callbacks
             *  as data arrives. It supports SASL PLAIN, SASL SCRAM-SHA-1
             *  and legacy authentication.
             *
             *  After creating a Strophe.Connection object, the user will typically
             *  call connect() with a user supplied callback to handle connection level
             *  events like authentication failure, disconnection, or connection
             *  complete.
             *
             *  The user will also have several event handlers defined by using
             *  addHandler() and addTimedHandler().  These will allow the user code to
             *  respond to interesting stanzas or do something periodically with the
             *  connection. These handlers will be active once authentication is
             *  finished.
             *
             *  To send data to the connection, use send().
             */

            /** Constructor: Strophe.Connection
             *  Create and initialize a Strophe.Connection object.
             *
             *  The transport-protocol for this connection will be chosen automatically
             *  based on the given service parameter. URLs starting with "ws://" or
             *  "wss://" will use WebSockets, URLs starting with "http://", "https://"
             *  or without a protocol will use BOSH.
             *
             *  To make Strophe connect to the current host you can leave out the protocol
             *  and host part and just pass the path, e.g.
             *
             *  > let conn = new Strophe.Connection("/http-bind/");
             *
             *  Options common to both Websocket and BOSH:
             *  ------------------------------------------
             *
             *  cookies:
             *
             *  The *cookies* option allows you to pass in cookies to be added to the
             *  document. These cookies will then be included in the BOSH XMLHttpRequest
             *  or in the websocket connection.
             *
             *  The passed in value must be a map of cookie names and string values.
             *
             *  > { "myCookie": {
             *  >     "value": "1234",
             *  >     "domain": ".example.org",
             *  >     "path": "/",
             *  >     "expires": expirationDate
             *  >     }
             *  > }
             *
             *  Note that cookies can't be set in this way for other domains (i.e. cross-domain).
             *  Those cookies need to be set under those domains, for example they can be
             *  set server-side by making a XHR call to that domain to ask it to set any
             *  necessary cookies.
             *
             *  mechanisms:
             *
             *  The *mechanisms* option allows you to specify the SASL mechanisms that this
             *  instance of Strophe.Connection (and therefore your XMPP client) will
             *  support.
             *
             *  The value must be an array of objects with Strophe.SASLMechanism
             *  prototypes.
             *
             *  If nothing is specified, then the following mechanisms (and their
             *  priorities) are registered:
             *
             *      SCRAM-SHA-1 - 60
             *      PLAIN       - 50
             *      OAUTHBEARER - 40
             *      X-OAUTH2    - 30
             *      ANONYMOUS   - 20
             *      EXTERNAL    - 10
             *
             *  explicitResourceBinding:
             *
             *  If `explicitResourceBinding` is set to a truthy value, then the XMPP client
             *  needs to explicitly call `Strophe.Connection.prototype.bind` once the XMPP
             *  server has advertised the "urn:ietf:params:xml:ns:xmpp-bind" feature.
             *
             *  Making this step explicit allows client authors to first finish other
             *  stream related tasks, such as setting up an XEP-0198 Stream Management
             *  session, before binding the JID resource for this session.
             *
             *  WebSocket options:
             *  ------------------
             *
             *  protocol:
             *
             *  If you want to connect to the current host with a WebSocket connection you
             *  can tell Strophe to use WebSockets through a "protocol" attribute in the
             *  optional options parameter. Valid values are "ws" for WebSocket and "wss"
             *  for Secure WebSocket.
             *  So to connect to "wss://CURRENT_HOSTNAME/xmpp-websocket" you would call
             *
             *  > let conn = new Strophe.Connection("/xmpp-websocket/", {protocol: "wss"});
             *
             *  Note that relative URLs _NOT_ starting with a "/" will also include the path
             *  of the current site.
             *
             *  Also because downgrading security is not permitted by browsers, when using
             *  relative URLs both BOSH and WebSocket connections will use their secure
             *  variants if the current connection to the site is also secure (https).
             *
             *  worker:
             *
             *  Set this option to URL from where the shared worker script should be loaded.
             *
             *  To run the websocket connection inside a shared worker.
             *  This allows you to share a single websocket-based connection between
             *  multiple Strophe.Connection instances, for example one per browser tab.
             *
             *  The script to use is the one in `src/shared-connection-worker.js`.
             *
             *  BOSH options:
             *  -------------
             *
             *  By adding "sync" to the options, you can control if requests will
             *  be made synchronously or not. The default behaviour is asynchronous.
             *  If you want to make requests synchronous, make "sync" evaluate to true.
             *  > let conn = new Strophe.Connection("/http-bind/", {sync: true});
             *
             *  You can also toggle this on an already established connection.
             *  > conn.options.sync = true;
             *
             *  The *customHeaders* option can be used to provide custom HTTP headers to be
             *  included in the XMLHttpRequests made.
             *
             *  The *keepalive* option can be used to instruct Strophe to maintain the
             *  current BOSH session across interruptions such as webpage reloads.
             *
             *  It will do this by caching the sessions tokens in sessionStorage, and when
             *  "restore" is called it will check whether there are cached tokens with
             *  which it can resume an existing session.
             *
             *  The *withCredentials* option should receive a Boolean value and is used to
             *  indicate wether cookies should be included in ajax requests (by default
             *  they're not).
             *  Set this value to true if you are connecting to a BOSH service
             *  and for some reason need to send cookies to it.
             *  In order for this to work cross-domain, the server must also enable
             *  credentials by setting the Access-Control-Allow-Credentials response header
             *  to "true". For most usecases however this setting should be false (which
             *  is the default).
             *  Additionally, when using Access-Control-Allow-Credentials, the
             *  Access-Control-Allow-Origin header can't be set to the wildcard "*", but
             *  instead must be restricted to actual domains.
             *
             *  The *contentType* option can be set to change the default Content-Type
             *  of "text/xml; charset=utf-8", which can be useful to reduce the amount of
             *  CORS preflight requests that are sent to the server.
             *
             *  Parameters:
             *    (String) service - The BOSH or WebSocket service URL.
             *    (Object) options - A hash of configuration options
             *
             *  Returns:
             *    A new Strophe.Connection object.
             */

            Strophe.Connection = class Connection {
              constructor(service, options) {
                // The service URL
                this.service = service; // Configuration options

                this.options = options || {};
                this.setProtocol();
                /* The connected JID. */

                this.jid = "";
                /* the JIDs domain */

                this.domain = null;
                /* stream:features */

                this.features = null; // SASL

                this._sasl_data = {};
                this.do_bind = false;
                this.do_session = false;
                this.mechanisms = {}; // handler lists

                this.timedHandlers = [];
                this.handlers = [];
                this.removeTimeds = [];
                this.removeHandlers = [];
                this.addTimeds = [];
                this.addHandlers = [];
                this.protocolErrorHandlers = {
                  'HTTP': {},
                  'websocket': {}
                };
                this._idleTimeout = null;
                this._disconnectTimeout = null;
                this.authenticated = false;
                this.connected = false;
                this.disconnecting = false;
                this.do_authentication = true;
                this.paused = false;
                this.restored = false;
                this._data = [];
                this._uniqueId = 0;
                this._sasl_success_handler = null;
                this._sasl_failure_handler = null;
                this._sasl_challenge_handler = null; // Max retries before disconnecting

                this.maxRetries = 5; // Call onIdle callback every 1/10th of a second

                this._idleTimeout = setTimeout(() => this._onIdle(), 100);
                utils.addCookies(this.options.cookies);
                this.registerSASLMechanisms(this.options.mechanisms); // A client must always respond to incoming IQ "set" and "get" stanzas.
                // See https://datatracker.ietf.org/doc/html/rfc6120#section-8.2.3
                //
                // This is a fallback handler which gets called when no other handler
                // was called for a received IQ "set" or "get".

                this.iqFallbackHandler = new Strophe.Handler(iq => this.send($iq({
                  type: 'error',
                  id: iq.getAttribute('id')
                }).c('error', {
                  'type': 'cancel'
                }).c('service-unavailable', {
                  'xmlns': Strophe.NS.STANZAS
                })), null, 'iq', ['get', 'set']); // initialize plugins

                for (const k in Strophe._connectionPlugins) {
                  if (Object.prototype.hasOwnProperty.call(Strophe._connectionPlugins, k)) {
                    const F = function () {};

                    F.prototype = Strophe._connectionPlugins[k];
                    this[k] = new F();
                    this[k].init(this);
                  }
                }
              }
              /** Function: setProtocol
               *  Select protocal based on this.options or this.service
               */


              setProtocol() {
                const proto = this.options.protocol || "";

                if (this.options.worker) {
                  this._proto = new Strophe.WorkerWebsocket(this);
                } else if (this.service.indexOf("ws:") === 0 || this.service.indexOf("wss:") === 0 || proto.indexOf("ws") === 0) {
                  this._proto = new Strophe.Websocket(this);
                } else {
                  this._proto = new Strophe.Bosh(this);
                }
              }
              /** Function: reset
               *  Reset the connection.
               *
               *  This function should be called after a connection is disconnected
               *  before that connection is reused.
               */


              reset() {
                this._proto._reset(); // SASL


                this.do_session = false;
                this.do_bind = false; // handler lists

                this.timedHandlers = [];
                this.handlers = [];
                this.removeTimeds = [];
                this.removeHandlers = [];
                this.addTimeds = [];
                this.addHandlers = [];
                this.authenticated = false;
                this.connected = false;
                this.disconnecting = false;
                this.restored = false;
                this._data = [];
                this._requests = [];
                this._uniqueId = 0;
              }
              /** Function: pause
               *  Pause the request manager.
               *
               *  This will prevent Strophe from sending any more requests to the
               *  server.  This is very useful for temporarily pausing
               *  BOSH-Connections while a lot of send() calls are happening quickly.
               *  This causes Strophe to send the data in a single request, saving
               *  many request trips.
               */


              pause() {
                this.paused = true;
              }
              /** Function: resume
               *  Resume the request manager.
               *
               *  This resumes after pause() has been called.
               */


              resume() {
                this.paused = false;
              }
              /** Function: getUniqueId
               *  Generate a unique ID for use in <iq/> elements.
               *
               *  All <iq/> stanzas are required to have unique id attributes.  This
               *  function makes creating these easy.  Each connection instance has
               *  a counter which starts from zero, and the value of this counter
               *  plus a colon followed by the suffix becomes the unique id. If no
               *  suffix is supplied, the counter is used as the unique id.
               *
               *  Suffixes are used to make debugging easier when reading the stream
               *  data, and their use is recommended.  The counter resets to 0 for
               *  every new connection for the same reason.  For connections to the
               *  same server that authenticate the same way, all the ids should be
               *  the same, which makes it easy to see changes.  This is useful for
               *  automated testing as well.
               *
               *  Parameters:
               *    (String) suffix - A optional suffix to append to the id.
               *
               *  Returns:
               *    A unique string to be used for the id attribute.
               */


              getUniqueId(suffix) {
                // eslint-disable-line class-methods-use-this
                const uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
                  const r = Math.random() * 16 | 0,
                        v = c === 'x' ? r : r & 0x3 | 0x8;
                  return v.toString(16);
                });

                if (typeof suffix === "string" || typeof suffix === "number") {
                  return uuid + ":" + suffix;
                } else {
                  return uuid + "";
                }
              }
              /** Function: addProtocolErrorHandler
               *  Register a handler function for when a protocol (websocker or HTTP)
               *  error occurs.
               *
               *  NOTE: Currently only HTTP errors for BOSH requests are handled.
               *  Patches that handle websocket errors would be very welcome.
               *
               *  Parameters:
               *    (String) protocol - 'HTTP' or 'websocket'
               *    (Integer) status_code - Error status code (e.g 500, 400 or 404)
               *    (Function) callback - Function that will fire on Http error
               *
               *  Example:
               *  function onError(err_code){
               *    //do stuff
               *  }
               *
               *  let conn = Strophe.connect('http://example.com/http-bind');
               *  conn.addProtocolErrorHandler('HTTP', 500, onError);
               *  // Triggers HTTP 500 error and onError handler will be called
               *  conn.connect('user_jid@incorrect_jabber_host', 'secret', onConnect);
               */


              addProtocolErrorHandler(protocol, status_code, callback) {
                this.protocolErrorHandlers[protocol][status_code] = callback;
              }
              /** Function: connect
               *  Starts the connection process.
               *
               *  As the connection process proceeds, the user supplied callback will
               *  be triggered multiple times with status updates.  The callback
               *  should take two arguments - the status code and the error condition.
               *
               *  The status code will be one of the values in the Strophe.Status
               *  constants.  The error condition will be one of the conditions
               *  defined in RFC 3920 or the condition 'strophe-parsererror'.
               *
               *  The Parameters _wait_, _hold_ and _route_ are optional and only relevant
               *  for BOSH connections. Please see XEP 124 for a more detailed explanation
               *  of the optional parameters.
               *
               *  Parameters:
               *    (String) jid - The user's JID.  This may be a bare JID,
               *      or a full JID.  If a node is not supplied, SASL OAUTHBEARER or
               *      SASL ANONYMOUS authentication will be attempted (OAUTHBEARER will
               *      process the provided password value as an access token).
               *    (String) pass - The user's password.
               *    (Function) callback - The connect callback function.
               *    (Integer) wait - The optional HTTPBIND wait value.  This is the
               *      time the server will wait before returning an empty result for
               *      a request.  The default setting of 60 seconds is recommended.
               *    (Integer) hold - The optional HTTPBIND hold value.  This is the
               *      number of connections the server will hold at one time.  This
               *      should almost always be set to 1 (the default).
               *    (String) route - The optional route value.
               *    (String) authcid - The optional alternative authentication identity
               *      (username) if intending to impersonate another user.
               *      When using the SASL-EXTERNAL authentication mechanism, for example
               *      with client certificates, then the authcid value is used to
               *      determine whether an authorization JID (authzid) should be sent to
               *      the server. The authzid should NOT be sent to the server if the
               *      authzid and authcid are the same. So to prevent it from being sent
               *      (for example when the JID is already contained in the client
               *      certificate), set authcid to that same JID. See XEP-178 for more
               *      details.
               *     (Integer) disconnection_timeout - The optional disconnection timeout
               *      in milliseconds before _doDisconnect will be called.
               */


              connect(jid, pass, callback, wait, hold, route, authcid) {
                let disconnection_timeout = arguments.length > 7 && arguments[7] !== undefined ? arguments[7] : 3000;
                this.jid = jid;
                /** Variable: authzid
                 *  Authorization identity.
                 */

                this.authzid = Strophe.getBareJidFromJid(this.jid);
                /** Variable: authcid
                 *  Authentication identity (User name).
                 */

                this.authcid = authcid || Strophe.getNodeFromJid(this.jid);
                /** Variable: pass
                 *  Authentication identity (User password).
                 */

                this.pass = pass;
                this.connect_callback = callback;
                this.disconnecting = false;
                this.connected = false;
                this.authenticated = false;
                this.restored = false;
                this.disconnection_timeout = disconnection_timeout; // parse jid for domain

                this.domain = Strophe.getDomainFromJid(this.jid);

                this._changeConnectStatus(Strophe.Status.CONNECTING, null);

                this._proto._connect(wait, hold, route);
              }
              /** Function: attach
               *  Attach to an already created and authenticated BOSH session.
               *
               *  This function is provided to allow Strophe to attach to BOSH
               *  sessions which have been created externally, perhaps by a Web
               *  application.  This is often used to support auto-login type features
               *  without putting user credentials into the page.
               *
               *  Parameters:
               *    (String) jid - The full JID that is bound by the session.
               *    (String) sid - The SID of the BOSH session.
               *    (String) rid - The current RID of the BOSH session.  This RID
               *      will be used by the next request.
               *    (Function) callback The connect callback function.
               *    (Integer) wait - The optional HTTPBIND wait value.  This is the
               *      time the server will wait before returning an empty result for
               *      a request.  The default setting of 60 seconds is recommended.
               *      Other settings will require tweaks to the Strophe.TIMEOUT value.
               *    (Integer) hold - The optional HTTPBIND hold value.  This is the
               *      number of connections the server will hold at one time.  This
               *      should almost always be set to 1 (the default).
               *    (Integer) wind - The optional HTTBIND window value.  This is the
               *      allowed range of request ids that are valid.  The default is 5.
               */


              attach(jid, sid, rid, callback, wait, hold, wind) {
                if (this._proto._attach) {
                  return this._proto._attach(jid, sid, rid, callback, wait, hold, wind);
                } else {
                  const error = new Error('The "attach" method is not available for your connection protocol');
                  error.name = 'StropheSessionError';
                  throw error;
                }
              }
              /** Function: restore
               *  Attempt to restore a cached BOSH session.
               *
               *  This function is only useful in conjunction with providing the
               *  "keepalive":true option when instantiating a new Strophe.Connection.
               *
               *  When "keepalive" is set to true, Strophe will cache the BOSH tokens
               *  RID (Request ID) and SID (Session ID) and then when this function is
               *  called, it will attempt to restore the session from those cached
               *  tokens.
               *
               *  This function must therefore be called instead of connect or attach.
               *
               *  For an example on how to use it, please see examples/restore.js
               *
               *  Parameters:
               *    (String) jid - The user's JID.  This may be a bare JID or a full JID.
               *    (Function) callback - The connect callback function.
               *    (Integer) wait - The optional HTTPBIND wait value.  This is the
               *      time the server will wait before returning an empty result for
               *      a request.  The default setting of 60 seconds is recommended.
               *    (Integer) hold - The optional HTTPBIND hold value.  This is the
               *      number of connections the server will hold at one time.  This
               *      should almost always be set to 1 (the default).
               *    (Integer) wind - The optional HTTBIND window value.  This is the
               *      allowed range of request ids that are valid.  The default is 5.
               */


              restore(jid, callback, wait, hold, wind) {
                if (this._sessionCachingSupported()) {
                  this._proto._restore(jid, callback, wait, hold, wind);
                } else {
                  const error = new Error('The "restore" method can only be used with a BOSH connection.');
                  error.name = 'StropheSessionError';
                  throw error;
                }
              }
              /** PrivateFunction: _sessionCachingSupported
               * Checks whether sessionStorage and JSON are supported and whether we're
               * using BOSH.
               */


              _sessionCachingSupported() {
                if (this._proto instanceof Strophe.Bosh) {
                  if (!JSON) {
                    return false;
                  }

                  try {
                    sessionStorage.setItem('_strophe_', '_strophe_');
                    sessionStorage.removeItem('_strophe_');
                  } catch (e) {
                    return false;
                  }

                  return true;
                }

                return false;
              }
              /** Function: xmlInput
               *  User overrideable function that receives XML data coming into the
               *  connection.
               *
               *  The default function does nothing.  User code can override this with
               *  > Strophe.Connection.xmlInput = function (elem) {
               *  >   (user code)
               *  > };
               *
               *  Due to limitations of current Browsers' XML-Parsers the opening and closing
               *  <stream> tag for WebSocket-Connoctions will be passed as selfclosing here.
               *
               *  BOSH-Connections will have all stanzas wrapped in a <body> tag. See
               *  <Strophe.Bosh.strip> if you want to strip this tag.
               *
               *  Parameters:
               *    (XMLElement) elem - The XML data received by the connection.
               */


              xmlInput(elem) {
                // eslint-disable-line
                return;
              }
              /** Function: xmlOutput
               *  User overrideable function that receives XML data sent to the
               *  connection.
               *
               *  The default function does nothing.  User code can override this with
               *  > Strophe.Connection.xmlOutput = function (elem) {
               *  >   (user code)
               *  > };
               *
               *  Due to limitations of current Browsers' XML-Parsers the opening and closing
               *  <stream> tag for WebSocket-Connoctions will be passed as selfclosing here.
               *
               *  BOSH-Connections will have all stanzas wrapped in a <body> tag. See
               *  <Strophe.Bosh.strip> if you want to strip this tag.
               *
               *  Parameters:
               *    (XMLElement) elem - The XMLdata sent by the connection.
               */


              xmlOutput(elem) {
                // eslint-disable-line
                return;
              }
              /** Function: rawInput
               *  User overrideable function that receives raw data coming into the
               *  connection.
               *
               *  The default function does nothing.  User code can override this with
               *  > Strophe.Connection.rawInput = function (data) {
               *  >   (user code)
               *  > };
               *
               *  Parameters:
               *    (String) data - The data received by the connection.
               */


              rawInput(data) {
                // eslint-disable-line
                return;
              }
              /** Function: rawOutput
               *  User overrideable function that receives raw data sent to the
               *  connection.
               *
               *  The default function does nothing.  User code can override this with
               *  > Strophe.Connection.rawOutput = function (data) {
               *  >   (user code)
               *  > };
               *
               *  Parameters:
               *    (String) data - The data sent by the connection.
               */


              rawOutput(data) {
                // eslint-disable-line
                return;
              }
              /** Function: nextValidRid
               *  User overrideable function that receives the new valid rid.
               *
               *  The default function does nothing. User code can override this with
               *  > Strophe.Connection.nextValidRid = function (rid) {
               *  >    (user code)
               *  > };
               *
               *  Parameters:
               *    (Number) rid - The next valid rid
               */


              nextValidRid(rid) {
                // eslint-disable-line
                return;
              }
              /** Function: send
               *  Send a stanza.
               *
               *  This function is called to push data onto the send queue to
               *  go out over the wire.  Whenever a request is sent to the BOSH
               *  server, all pending data is sent and the queue is flushed.
               *
               *  Parameters:
               *    (XMLElement |
               *     [XMLElement] |
               *     Strophe.Builder) elem - The stanza to send.
               */


              send(elem) {
                if (elem === null) {
                  return;
                }

                if (typeof elem.sort === "function") {
                  for (let i = 0; i < elem.length; i++) {
                    this._queueData(elem[i]);
                  }
                } else if (typeof elem.tree === "function") {
                  this._queueData(elem.tree());
                } else {
                  this._queueData(elem);
                }

                this._proto._send();
              }
              /** Function: flush
               *  Immediately send any pending outgoing data.
               *
               *  Normally send() queues outgoing data until the next idle period
               *  (100ms), which optimizes network use in the common cases when
               *  several send()s are called in succession. flush() can be used to
               *  immediately send all pending data.
               */


              flush() {
                // cancel the pending idle period and run the idle function
                // immediately
                clearTimeout(this._idleTimeout);

                this._onIdle();
              }
              /** Function: sendPresence
               *  Helper function to send presence stanzas. The main benefit is for
               *  sending presence stanzas for which you expect a responding presence
               *  stanza with the same id (for example when leaving a chat room).
               *
               *  Parameters:
               *    (XMLElement) elem - The stanza to send.
               *    (Function) callback - The callback function for a successful request.
               *    (Function) errback - The callback function for a failed or timed
               *      out request.  On timeout, the stanza will be null.
               *    (Integer) timeout - The time specified in milliseconds for a
               *      timeout to occur.
               *
               *  Returns:
               *    The id used to send the presence.
               */


              sendPresence(elem, callback, errback, timeout) {
                let timeoutHandler = null;

                if (typeof elem.tree === "function") {
                  elem = elem.tree();
                }

                let id = elem.getAttribute('id');

                if (!id) {
                  // inject id if not found
                  id = this.getUniqueId("sendPresence");
                  elem.setAttribute("id", id);
                }

                if (typeof callback === "function" || typeof errback === "function") {
                  const handler = this.addHandler(stanza => {
                    // remove timeout handler if there is one
                    if (timeoutHandler) {
                      this.deleteTimedHandler(timeoutHandler);
                    }

                    if (stanza.getAttribute('type') === 'error') {
                      if (errback) {
                        errback(stanza);
                      }
                    } else if (callback) {
                      callback(stanza);
                    }
                  }, null, 'presence', null, id); // if timeout specified, set up a timeout handler.

                  if (timeout) {
                    timeoutHandler = this.addTimedHandler(timeout, () => {
                      // get rid of normal handler
                      this.deleteHandler(handler); // call errback on timeout with null stanza

                      if (errback) {
                        errback(null);
                      }

                      return false;
                    });
                  }
                }

                this.send(elem);
                return id;
              }
              /** Function: sendIQ
               *  Helper function to send IQ stanzas.
               *
               *  Parameters:
               *    (XMLElement) elem - The stanza to send.
               *    (Function) callback - The callback function for a successful request.
               *    (Function) errback - The callback function for a failed or timed
               *      out request.  On timeout, the stanza will be null.
               *    (Integer) timeout - The time specified in milliseconds for a
               *      timeout to occur.
               *
               *  Returns:
               *    The id used to send the IQ.
              */


              sendIQ(elem, callback, errback, timeout) {
                let timeoutHandler = null;

                if (typeof elem.tree === "function") {
                  elem = elem.tree();
                }

                let id = elem.getAttribute('id');

                if (!id) {
                  // inject id if not found
                  id = this.getUniqueId("sendIQ");
                  elem.setAttribute("id", id);
                }

                if (typeof callback === "function" || typeof errback === "function") {
                  const handler = this.addHandler(stanza => {
                    // remove timeout handler if there is one
                    if (timeoutHandler) {
                      this.deleteTimedHandler(timeoutHandler);
                    }

                    const iqtype = stanza.getAttribute('type');

                    if (iqtype === 'result') {
                      if (callback) {
                        callback(stanza);
                      }
                    } else if (iqtype === 'error') {
                      if (errback) {
                        errback(stanza);
                      }
                    } else {
                      const error = new Error(`Got bad IQ type of ${iqtype}`);
                      error.name = "StropheError";
                      throw error;
                    }
                  }, null, 'iq', ['error', 'result'], id); // if timeout specified, set up a timeout handler.

                  if (timeout) {
                    timeoutHandler = this.addTimedHandler(timeout, () => {
                      // get rid of normal handler
                      this.deleteHandler(handler); // call errback on timeout with null stanza

                      if (errback) {
                        errback(null);
                      }

                      return false;
                    });
                  }
                }

                this.send(elem);
                return id;
              }
              /** PrivateFunction: _queueData
               *  Queue outgoing data for later sending.  Also ensures that the data
               *  is a DOMElement.
               */


              _queueData(element) {
                if (element === null || !element.tagName || !element.childNodes) {
                  const error = new Error("Cannot queue non-DOMElement.");
                  error.name = "StropheError";
                  throw error;
                }

                this._data.push(element);
              }
              /** PrivateFunction: _sendRestart
               *  Send an xmpp:restart stanza.
               */


              _sendRestart() {
                this._data.push("restart");

                this._proto._sendRestart();

                this._idleTimeout = setTimeout(() => this._onIdle(), 100);
              }
              /** Function: addTimedHandler
               *  Add a timed handler to the connection.
               *
               *  This function adds a timed handler.  The provided handler will
               *  be called every period milliseconds until it returns false,
               *  the connection is terminated, or the handler is removed.  Handlers
               *  that wish to continue being invoked should return true.
               *
               *  Because of method binding it is necessary to save the result of
               *  this function if you wish to remove a handler with
               *  deleteTimedHandler().
               *
               *  Note that user handlers are not active until authentication is
               *  successful.
               *
               *  Parameters:
               *    (Integer) period - The period of the handler.
               *    (Function) handler - The callback function.
               *
               *  Returns:
               *    A reference to the handler that can be used to remove it.
               */


              addTimedHandler(period, handler) {
                const thand = new Strophe.TimedHandler(period, handler);
                this.addTimeds.push(thand);
                return thand;
              }
              /** Function: deleteTimedHandler
               *  Delete a timed handler for a connection.
               *
               *  This function removes a timed handler from the connection.  The
               *  handRef parameter is *not* the function passed to addTimedHandler(),
               *  but is the reference returned from addTimedHandler().
               *
               *  Parameters:
               *    (Strophe.TimedHandler) handRef - The handler reference.
               */


              deleteTimedHandler(handRef) {
                // this must be done in the Idle loop so that we don't change
                // the handlers during iteration
                this.removeTimeds.push(handRef);
              }
              /** Function: addHandler
               *  Add a stanza handler for the connection.
               *
               *  This function adds a stanza handler to the connection.  The
               *  handler callback will be called for any stanza that matches
               *  the parameters.  Note that if multiple parameters are supplied,
               *  they must all match for the handler to be invoked.
               *
               *  The handler will receive the stanza that triggered it as its argument.
               *  *The handler should return true if it is to be invoked again;
               *  returning false will remove the handler after it returns.*
               *
               *  As a convenience, the ns parameters applies to the top level element
               *  and also any of its immediate children.  This is primarily to make
               *  matching /iq/query elements easy.
               *
               *  Options
               *  ~~~~~~~
               *  With the options argument, you can specify boolean flags that affect how
               *  matches are being done.
               *
               *  Currently two flags exist:
               *
               *  - matchBareFromJid:
               *      When set to true, the from parameter and the
               *      from attribute on the stanza will be matched as bare JIDs instead
               *      of full JIDs. To use this, pass {matchBareFromJid: true} as the
               *      value of options. The default value for matchBareFromJid is false.
               *
               *  - ignoreNamespaceFragment:
               *      When set to true, a fragment specified on the stanza's namespace
               *      URL will be ignored when it's matched with the one configured for
               *      the handler.
               *
               *      This means that if you register like this:
               *      >   connection.addHandler(
               *      >       handler,
               *      >       'http://jabber.org/protocol/muc',
               *      >       null, null, null, null,
               *      >       {'ignoreNamespaceFragment': true}
               *      >   );
               *
               *      Then a stanza with XML namespace of
               *      'http://jabber.org/protocol/muc#user' will also be matched. If
               *      'ignoreNamespaceFragment' is false, then only stanzas with
               *      'http://jabber.org/protocol/muc' will be matched.
               *
               *  Deleting the handler
               *  ~~~~~~~~~~~~~~~~~~~~
               *  The return value should be saved if you wish to remove the handler
               *  with deleteHandler().
               *
               *  Parameters:
               *    (Function) handler - The user callback.
               *    (String) ns - The namespace to match.
               *    (String) name - The stanza name to match.
               *    (String|Array) type - The stanza type (or types if an array) to match.
               *    (String) id - The stanza id attribute to match.
               *    (String) from - The stanza from attribute to match.
               *    (String) options - The handler options
               *
               *  Returns:
               *    A reference to the handler that can be used to remove it.
               */


              addHandler(handler, ns, name, type, id, from, options) {
                const hand = new Strophe.Handler(handler, ns, name, type, id, from, options);
                this.addHandlers.push(hand);
                return hand;
              }
              /** Function: deleteHandler
               *  Delete a stanza handler for a connection.
               *
               *  This function removes a stanza handler from the connection.  The
               *  handRef parameter is *not* the function passed to addHandler(),
               *  but is the reference returned from addHandler().
               *
               *  Parameters:
               *    (Strophe.Handler) handRef - The handler reference.
               */


              deleteHandler(handRef) {
                // this must be done in the Idle loop so that we don't change
                // the handlers during iteration
                this.removeHandlers.push(handRef); // If a handler is being deleted while it is being added,
                // prevent it from getting added

                const i = this.addHandlers.indexOf(handRef);

                if (i >= 0) {
                  this.addHandlers.splice(i, 1);
                }
              }
              /** Function: registerSASLMechanisms
               *
               * Register the SASL mechanisms which will be supported by this instance of
               * Strophe.Connection (i.e. which this XMPP client will support).
               *
               *  Parameters:
               *    (Array) mechanisms - Array of objects with Strophe.SASLMechanism prototypes
               *
               */


              registerSASLMechanisms(mechanisms) {
                this.mechanisms = {};
                mechanisms = mechanisms || [Strophe.SASLAnonymous, Strophe.SASLExternal, Strophe.SASLOAuthBearer, Strophe.SASLXOAuth2, Strophe.SASLPlain, Strophe.SASLSHA1];
                mechanisms.forEach(m => this.registerSASLMechanism(m));
              }
              /** Function: registerSASLMechanism
               *
               * Register a single SASL mechanism, to be supported by this client.
               *
               *  Parameters:
               *    (Object) mechanism - Object with a Strophe.SASLMechanism prototype
               *
               */


              registerSASLMechanism(Mechanism) {
                const mechanism = new Mechanism();
                this.mechanisms[mechanism.mechname] = mechanism;
              }
              /** Function: disconnect
               *  Start the graceful disconnection process.
               *
               *  This function starts the disconnection process.  This process starts
               *  by sending unavailable presence and sending BOSH body of type
               *  terminate.  A timeout handler makes sure that disconnection happens
               *  even if the BOSH server does not respond.
               *  If the Connection object isn't connected, at least tries to abort all pending requests
               *  so the connection object won't generate successful requests (which were already opened).
               *
               *  The user supplied connection callback will be notified of the
               *  progress as this process happens.
               *
               *  Parameters:
               *    (String) reason - The reason the disconnect is occuring.
               */


              disconnect(reason) {
                this._changeConnectStatus(Strophe.Status.DISCONNECTING, reason);

                if (reason) {
                  Strophe.warn("Disconnect was called because: " + reason);
                } else {
                  Strophe.info("Disconnect was called");
                }

                if (this.connected) {
                  let pres = false;
                  this.disconnecting = true;

                  if (this.authenticated) {
                    pres = $pres({
                      'xmlns': Strophe.NS.CLIENT,
                      'type': 'unavailable'
                    });
                  } // setup timeout handler


                  this._disconnectTimeout = this._addSysTimedHandler(this.disconnection_timeout, this._onDisconnectTimeout.bind(this));

                  this._proto._disconnect(pres);
                } else {
                  Strophe.warn("Disconnect was called before Strophe connected to the server");

                  this._proto._abortAllRequests();

                  this._doDisconnect();
                }
              }
              /** PrivateFunction: _changeConnectStatus
               *  _Private_ helper function that makes sure plugins and the user's
               *  callback are notified of connection status changes.
               *
               *  Parameters:
               *    (Integer) status - the new connection status, one of the values
               *      in Strophe.Status
               *    (String) condition - the error condition or null
               *    (XMLElement) elem - The triggering stanza.
               */


              _changeConnectStatus(status, condition, elem) {
                // notify all plugins listening for status changes
                for (const k in Strophe._connectionPlugins) {
                  if (Object.prototype.hasOwnProperty.call(Strophe._connectionPlugins, k)) {
                    const plugin = this[k];

                    if (plugin.statusChanged) {
                      try {
                        plugin.statusChanged(status, condition);
                      } catch (err) {
                        Strophe.error(`${k} plugin caused an exception changing status: ${err}`);
                      }
                    }
                  }
                } // notify the user's callback


                if (this.connect_callback) {
                  try {
                    this.connect_callback(status, condition, elem);
                  } catch (e) {
                    Strophe._handleError(e);

                    Strophe.error(`User connection callback caused an exception: ${e}`);
                  }
                }
              }
              /** PrivateFunction: _doDisconnect
               *  _Private_ function to disconnect.
               *
               *  This is the last piece of the disconnection logic.  This resets the
               *  connection and alerts the user's connection callback.
               */


              _doDisconnect(condition) {
                if (typeof this._idleTimeout === "number") {
                  clearTimeout(this._idleTimeout);
                } // Cancel Disconnect Timeout


                if (this._disconnectTimeout !== null) {
                  this.deleteTimedHandler(this._disconnectTimeout);
                  this._disconnectTimeout = null;
                }

                Strophe.debug("_doDisconnect was called");

                this._proto._doDisconnect();

                this.authenticated = false;
                this.disconnecting = false;
                this.restored = false; // delete handlers

                this.handlers = [];
                this.timedHandlers = [];
                this.removeTimeds = [];
                this.removeHandlers = [];
                this.addTimeds = [];
                this.addHandlers = []; // tell the parent we disconnected

                this._changeConnectStatus(Strophe.Status.DISCONNECTED, condition);

                this.connected = false;
              }
              /** PrivateFunction: _dataRecv
               *  _Private_ handler to processes incoming data from the the connection.
               *
               *  Except for _connect_cb handling the initial connection request,
               *  this function handles the incoming data for all requests.  This
               *  function also fires stanza handlers that match each incoming
               *  stanza.
               *
               *  Parameters:
               *    (Strophe.Request) req - The request that has data ready.
               *    (string) req - The stanza a raw string (optiona).
               */


              _dataRecv(req, raw) {
                const elem = this._proto._reqToData(req);

                if (elem === null) {
                  return;
                }

                if (this.xmlInput !== Strophe.Connection.prototype.xmlInput) {
                  if (elem.nodeName === this._proto.strip && elem.childNodes.length) {
                    this.xmlInput(elem.childNodes[0]);
                  } else {
                    this.xmlInput(elem);
                  }
                }

                if (this.rawInput !== Strophe.Connection.prototype.rawInput) {
                  if (raw) {
                    this.rawInput(raw);
                  } else {
                    this.rawInput(Strophe.serialize(elem));
                  }
                } // remove handlers scheduled for deletion


                while (this.removeHandlers.length > 0) {
                  const hand = this.removeHandlers.pop();
                  const i = this.handlers.indexOf(hand);

                  if (i >= 0) {
                    this.handlers.splice(i, 1);
                  }
                } // add handlers scheduled for addition


                while (this.addHandlers.length > 0) {
                  this.handlers.push(this.addHandlers.pop());
                } // handle graceful disconnect


                if (this.disconnecting && this._proto._emptyQueue()) {
                  this._doDisconnect();

                  return;
                }

                const type = elem.getAttribute("type");

                if (type !== null && type === "terminate") {
                  // Don't process stanzas that come in after disconnect
                  if (this.disconnecting) {
                    return;
                  } // an error occurred


                  let cond = elem.getAttribute("condition");
                  const conflict = elem.getElementsByTagName("conflict");

                  if (cond !== null) {
                    if (cond === "remote-stream-error" && conflict.length > 0) {
                      cond = "conflict";
                    }

                    this._changeConnectStatus(Strophe.Status.CONNFAIL, cond);
                  } else {
                    this._changeConnectStatus(Strophe.Status.CONNFAIL, Strophe.ErrorCondition.UNKOWN_REASON);
                  }

                  this._doDisconnect(cond);

                  return;
                } // send each incoming stanza through the handler chain


                Strophe.forEachChild(elem, null, child => {
                  const matches = [];
                  this.handlers = this.handlers.reduce((handlers, handler) => {
                    try {
                      if (handler.isMatch(child) && (this.authenticated || !handler.user)) {
                        if (handler.run(child)) {
                          handlers.push(handler);
                        }

                        matches.push(handler);
                      } else {
                        handlers.push(handler);
                      }
                    } catch (e) {
                      // if the handler throws an exception, we consider it as false
                      Strophe.warn('Removing Strophe handlers due to uncaught exception: ' + e.message);
                    }

                    return handlers;
                  }, []); // If no handler was fired for an incoming IQ with type="set",
                  // then we return an IQ error stanza with service-unavailable.

                  if (!matches.length && this.iqFallbackHandler.isMatch(child)) {
                    this.iqFallbackHandler.run(child);
                  }
                });
              }
              /** PrivateFunction: _connect_cb
               *  _Private_ handler for initial connection request.
               *
               *  This handler is used to process the initial connection request
               *  response from the BOSH server. It is used to set up authentication
               *  handlers and start the authentication process.
               *
               *  SASL authentication will be attempted if available, otherwise
               *  the code will fall back to legacy authentication.
               *
               *  Parameters:
               *    (Strophe.Request) req - The current request.
               *    (Function) _callback - low level (xmpp) connect callback function.
               *      Useful for plugins with their own xmpp connect callback (when they
               *      want to do something special).
               */


              _connect_cb(req, _callback, raw) {
                Strophe.debug("_connect_cb was called");
                this.connected = true;
                let bodyWrap;

                try {
                  bodyWrap = this._proto._reqToData(req);
                } catch (e) {
                  if (e.name !== Strophe.ErrorCondition.BAD_FORMAT) {
                    throw e;
                  }

                  this._changeConnectStatus(Strophe.Status.CONNFAIL, Strophe.ErrorCondition.BAD_FORMAT);

                  this._doDisconnect(Strophe.ErrorCondition.BAD_FORMAT);
                }

                if (!bodyWrap) {
                  return;
                }

                if (this.xmlInput !== Strophe.Connection.prototype.xmlInput) {
                  if (bodyWrap.nodeName === this._proto.strip && bodyWrap.childNodes.length) {
                    this.xmlInput(bodyWrap.childNodes[0]);
                  } else {
                    this.xmlInput(bodyWrap);
                  }
                }

                if (this.rawInput !== Strophe.Connection.prototype.rawInput) {
                  if (raw) {
                    this.rawInput(raw);
                  } else {
                    this.rawInput(Strophe.serialize(bodyWrap));
                  }
                }

                const conncheck = this._proto._connect_cb(bodyWrap);

                if (conncheck === Strophe.Status.CONNFAIL) {
                  return;
                } // Check for the stream:features tag


                let hasFeatures;

                if (bodyWrap.getElementsByTagNameNS) {
                  hasFeatures = bodyWrap.getElementsByTagNameNS(Strophe.NS.STREAM, "features").length > 0;
                } else {
                  hasFeatures = bodyWrap.getElementsByTagName("stream:features").length > 0 || bodyWrap.getElementsByTagName("features").length > 0;
                }

                if (!hasFeatures) {
                  this._proto._no_auth_received(_callback);

                  return;
                }

                const matched = Array.from(bodyWrap.getElementsByTagName("mechanism")).map(m => this.mechanisms[m.textContent]).filter(m => m);

                if (matched.length === 0) {
                  if (bodyWrap.getElementsByTagName("auth").length === 0) {
                    // There are no matching SASL mechanisms and also no legacy
                    // auth available.
                    this._proto._no_auth_received(_callback);

                    return;
                  }
                }

                if (this.do_authentication !== false) {
                  this.authenticate(matched);
                }
              }
              /** Function: sortMechanismsByPriority
               *
               *  Sorts an array of objects with prototype SASLMechanism according to
               *  their priorities.
               *
               *  Parameters:
               *    (Array) mechanisms - Array of SASL mechanisms.
               *
               */


              sortMechanismsByPriority(mechanisms) {
                // eslint-disable-line class-methods-use-this
                // Sorting mechanisms according to priority.
                for (let i = 0; i < mechanisms.length - 1; ++i) {
                  let higher = i;

                  for (let j = i + 1; j < mechanisms.length; ++j) {
                    if (mechanisms[j].priority > mechanisms[higher].priority) {
                      higher = j;
                    }
                  }

                  if (higher !== i) {
                    const swap = mechanisms[i];
                    mechanisms[i] = mechanisms[higher];
                    mechanisms[higher] = swap;
                  }
                }

                return mechanisms;
              }
              /** Function: authenticate
               * Set up authentication
               *
               *  Continues the initial connection request by setting up authentication
               *  handlers and starting the authentication process.
               *
               *  SASL authentication will be attempted if available, otherwise
               *  the code will fall back to legacy authentication.
               *
               *  Parameters:
               *    (Array) matched - Array of SASL mechanisms supported.
               *
               */


              authenticate(matched) {
                if (!this._attemptSASLAuth(matched)) {
                  this._attemptLegacyAuth();
                }
              }
              /** PrivateFunction: _attemptSASLAuth
               *
               *  Iterate through an array of SASL mechanisms and attempt authentication
               *  with the highest priority (enabled) mechanism.
               *
               *  Parameters:
               *    (Array) mechanisms - Array of SASL mechanisms.
               *
               *  Returns:
               *    (Boolean) mechanism_found - true or false, depending on whether a
               *          valid SASL mechanism was found with which authentication could be
               *          started.
               */


              _attemptSASLAuth(mechanisms) {
                mechanisms = this.sortMechanismsByPriority(mechanisms || []);
                let mechanism_found = false;

                for (let i = 0; i < mechanisms.length; ++i) {
                  if (!mechanisms[i].test(this)) {
                    continue;
                  }

                  this._sasl_success_handler = this._addSysHandler(this._sasl_success_cb.bind(this), null, "success", null, null);
                  this._sasl_failure_handler = this._addSysHandler(this._sasl_failure_cb.bind(this), null, "failure", null, null);
                  this._sasl_challenge_handler = this._addSysHandler(this._sasl_challenge_cb.bind(this), null, "challenge", null, null);
                  this._sasl_mechanism = mechanisms[i];

                  this._sasl_mechanism.onStart(this);

                  const request_auth_exchange = $build("auth", {
                    'xmlns': Strophe.NS.SASL,
                    'mechanism': this._sasl_mechanism.mechname
                  });

                  if (this._sasl_mechanism.isClientFirst) {
                    const response = this._sasl_mechanism.clientChallenge(this);

                    request_auth_exchange.t(abab.btoa(response));
                  }

                  this.send(request_auth_exchange.tree());
                  mechanism_found = true;
                  break;
                }

                return mechanism_found;
              }
              /** PrivateFunction: _sasl_challenge_cb
               *  _Private_ handler for the SASL challenge
               *
               */


              _sasl_challenge_cb(elem) {
                const challenge = abab.atob(Strophe.getText(elem));

                const response = this._sasl_mechanism.onChallenge(this, challenge);

                const stanza = $build('response', {
                  'xmlns': Strophe.NS.SASL
                });

                if (response !== "") {
                  stanza.t(abab.btoa(response));
                }

                this.send(stanza.tree());
                return true;
              }
              /** PrivateFunction: _attemptLegacyAuth
               *
               *  Attempt legacy (i.e. non-SASL) authentication.
               */


              _attemptLegacyAuth() {
                if (Strophe.getNodeFromJid(this.jid) === null) {
                  // we don't have a node, which is required for non-anonymous
                  // client connections
                  this._changeConnectStatus(Strophe.Status.CONNFAIL, Strophe.ErrorCondition.MISSING_JID_NODE);

                  this.disconnect(Strophe.ErrorCondition.MISSING_JID_NODE);
                } else {
                  // Fall back to legacy authentication
                  this._changeConnectStatus(Strophe.Status.AUTHENTICATING, null);

                  this._addSysHandler(this._onLegacyAuthIQResult.bind(this), null, null, null, "_auth_1");

                  this.send($iq({
                    'type': "get",
                    'to': this.domain,
                    'id': "_auth_1"
                  }).c("query", {
                    xmlns: Strophe.NS.AUTH
                  }).c("username", {}).t(Strophe.getNodeFromJid(this.jid)).tree());
                }
              }
              /** PrivateFunction: _onLegacyAuthIQResult
               *  _Private_ handler for legacy authentication.
               *
               *  This handler is called in response to the initial <iq type='get'/>
               *  for legacy authentication.  It builds an authentication <iq/> and
               *  sends it, creating a handler (calling back to _auth2_cb()) to
               *  handle the result
               *
               *  Parameters:
               *    (XMLElement) elem - The stanza that triggered the callback.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _onLegacyAuthIQResult(elem) {
                // eslint-disable-line no-unused-vars
                // build plaintext auth iq
                const iq = $iq({
                  type: "set",
                  id: "_auth_2"
                }).c('query', {
                  xmlns: Strophe.NS.AUTH
                }).c('username', {}).t(Strophe.getNodeFromJid(this.jid)).up().c('password').t(this.pass);

                if (!Strophe.getResourceFromJid(this.jid)) {
                  // since the user has not supplied a resource, we pick
                  // a default one here.  unlike other auth methods, the server
                  // cannot do this for us.
                  this.jid = Strophe.getBareJidFromJid(this.jid) + '/strophe';
                }

                iq.up().c('resource', {}).t(Strophe.getResourceFromJid(this.jid));

                this._addSysHandler(this._auth2_cb.bind(this), null, null, null, "_auth_2");

                this.send(iq.tree());
                return false;
              }
              /** PrivateFunction: _sasl_success_cb
               *  _Private_ handler for succesful SASL authentication.
               *
               *  Parameters:
               *    (XMLElement) elem - The matching stanza.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _sasl_success_cb(elem) {
                if (this._sasl_data["server-signature"]) {
                  let serverSignature;
                  const success = abab.atob(Strophe.getText(elem));
                  const attribMatch = /([a-z]+)=([^,]+)(,|$)/;
                  const matches = success.match(attribMatch);

                  if (matches[1] === "v") {
                    serverSignature = matches[2];
                  }

                  if (serverSignature !== this._sasl_data["server-signature"]) {
                    // remove old handlers
                    this.deleteHandler(this._sasl_failure_handler);
                    this._sasl_failure_handler = null;

                    if (this._sasl_challenge_handler) {
                      this.deleteHandler(this._sasl_challenge_handler);
                      this._sasl_challenge_handler = null;
                    }

                    this._sasl_data = {};
                    return this._sasl_failure_cb(null);
                  }
                }

                Strophe.info("SASL authentication succeeded.");

                if (this._sasl_mechanism) {
                  this._sasl_mechanism.onSuccess();
                } // remove old handlers


                this.deleteHandler(this._sasl_failure_handler);
                this._sasl_failure_handler = null;

                if (this._sasl_challenge_handler) {
                  this.deleteHandler(this._sasl_challenge_handler);
                  this._sasl_challenge_handler = null;
                }

                const streamfeature_handlers = [];

                const wrapper = (handlers, elem) => {
                  while (handlers.length) {
                    this.deleteHandler(handlers.pop());
                  }

                  this._onStreamFeaturesAfterSASL(elem);

                  return false;
                };

                streamfeature_handlers.push(this._addSysHandler(elem => wrapper(streamfeature_handlers, elem), null, "stream:features", null, null));
                streamfeature_handlers.push(this._addSysHandler(elem => wrapper(streamfeature_handlers, elem), Strophe.NS.STREAM, "features", null, null)); // we must send an xmpp:restart now

                this._sendRestart();

                return false;
              }
              /** PrivateFunction: _onStreamFeaturesAfterSASL
               *  Parameters:
               *    (XMLElement) elem - The matching stanza.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _onStreamFeaturesAfterSASL(elem) {
                // save stream:features for future usage
                this.features = elem;

                for (let i = 0; i < elem.childNodes.length; i++) {
                  const child = elem.childNodes[i];

                  if (child.nodeName === 'bind') {
                    this.do_bind = true;
                  }

                  if (child.nodeName === 'session') {
                    this.do_session = true;
                  }
                }

                if (!this.do_bind) {
                  this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);

                  return false;
                } else if (!this.options.explicitResourceBinding) {
                  this.bind();
                } else {
                  this._changeConnectStatus(Strophe.Status.BINDREQUIRED, null);
                }

                return false;
              }
              /** Function: bind
               *
               *  Sends an IQ to the XMPP server to bind a JID resource for this session.
               *
               *  https://tools.ietf.org/html/rfc6120#section-7.5
               *
               *  If `explicitResourceBinding` was set to a truthy value in the options
               *  passed to the Strophe.Connection constructor, then this function needs
               *  to be called explicitly by the client author.
               *
               *  Otherwise it'll be called automatically as soon as the XMPP server
               *  advertises the "urn:ietf:params:xml:ns:xmpp-bind" stream feature.
               */


              bind() {
                if (!this.do_bind) {
                  Strophe.log(Strophe.LogLevel.INFO, `Strophe.Connection.prototype.bind called but "do_bind" is false`);
                  return;
                }

                this._addSysHandler(this._onResourceBindResultIQ.bind(this), null, null, null, "_bind_auth_2");

                const resource = Strophe.getResourceFromJid(this.jid);

                if (resource) {
                  this.send($iq({
                    type: "set",
                    id: "_bind_auth_2"
                  }).c('bind', {
                    xmlns: Strophe.NS.BIND
                  }).c('resource', {}).t(resource).tree());
                } else {
                  this.send($iq({
                    type: "set",
                    id: "_bind_auth_2"
                  }).c('bind', {
                    xmlns: Strophe.NS.BIND
                  }).tree());
                }
              }
              /** PrivateFunction: _onResourceBindIQ
               *  _Private_ handler for binding result and session start.
               *
               *  Parameters:
               *    (XMLElement) elem - The matching stanza.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _onResourceBindResultIQ(elem) {
                if (elem.getAttribute("type") === "error") {
                  Strophe.warn("Resource binding failed.");
                  const conflict = elem.getElementsByTagName("conflict");
                  let condition;

                  if (conflict.length > 0) {
                    condition = Strophe.ErrorCondition.CONFLICT;
                  }

                  this._changeConnectStatus(Strophe.Status.AUTHFAIL, condition, elem);

                  return false;
                } // TODO - need to grab errors


                const bind = elem.getElementsByTagName("bind");

                if (bind.length > 0) {
                  const jidNode = bind[0].getElementsByTagName("jid");

                  if (jidNode.length > 0) {
                    this.authenticated = true;
                    this.jid = Strophe.getText(jidNode[0]);

                    if (this.do_session) {
                      this._establishSession();
                    } else {
                      this._changeConnectStatus(Strophe.Status.CONNECTED, null);
                    }
                  }
                } else {
                  Strophe.warn("Resource binding failed.");

                  this._changeConnectStatus(Strophe.Status.AUTHFAIL, null, elem);

                  return false;
                }
              }
              /** PrivateFunction: _establishSession
               *  Send IQ request to establish a session with the XMPP server.
               *
               *  See https://xmpp.org/rfcs/rfc3921.html#session
               *
               *  Note: The protocol for session establishment has been determined as
               *  unnecessary and removed in RFC-6121.
               */


              _establishSession() {
                if (!this.do_session) {
                  throw new Error(`Strophe.Connection.prototype._establishSession ` + `called but apparently ${Strophe.NS.SESSION} wasn't advertised by the server`);
                }

                this._addSysHandler(this._onSessionResultIQ.bind(this), null, null, null, "_session_auth_2");

                this.send($iq({
                  type: "set",
                  id: "_session_auth_2"
                }).c('session', {
                  xmlns: Strophe.NS.SESSION
                }).tree());
              }
              /** PrivateFunction: _onSessionResultIQ
               *  _Private_ handler for the server's IQ response to a client's session
               *  request.
               *
               *  This sets Connection.authenticated to true on success, which
               *  starts the processing of user handlers.
               *
               *  See https://xmpp.org/rfcs/rfc3921.html#session
               *
               *  Note: The protocol for session establishment has been determined as
               *  unnecessary and removed in RFC-6121.
               *
               *  Parameters:
               *    (XMLElement) elem - The matching stanza.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _onSessionResultIQ(elem) {
                if (elem.getAttribute("type") === "result") {
                  this.authenticated = true;

                  this._changeConnectStatus(Strophe.Status.CONNECTED, null);
                } else if (elem.getAttribute("type") === "error") {
                  this.authenticated = false;
                  Strophe.warn("Session creation failed.");

                  this._changeConnectStatus(Strophe.Status.AUTHFAIL, null, elem);

                  return false;
                }

                return false;
              }
              /** PrivateFunction: _sasl_failure_cb
               *  _Private_ handler for SASL authentication failure.
               *
               *  Parameters:
               *    (XMLElement) elem - The matching stanza.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _sasl_failure_cb(elem) {
                // delete unneeded handlers
                if (this._sasl_success_handler) {
                  this.deleteHandler(this._sasl_success_handler);
                  this._sasl_success_handler = null;
                }

                if (this._sasl_challenge_handler) {
                  this.deleteHandler(this._sasl_challenge_handler);
                  this._sasl_challenge_handler = null;
                }

                if (this._sasl_mechanism) this._sasl_mechanism.onFailure();

                this._changeConnectStatus(Strophe.Status.AUTHFAIL, null, elem);

                return false;
              }
              /** PrivateFunction: _auth2_cb
               *  _Private_ handler to finish legacy authentication.
               *
               *  This handler is called when the result from the jabber:iq:auth
               *  <iq/> stanza is returned.
               *
               *  Parameters:
               *    (XMLElement) elem - The stanza that triggered the callback.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _auth2_cb(elem) {
                if (elem.getAttribute("type") === "result") {
                  this.authenticated = true;

                  this._changeConnectStatus(Strophe.Status.CONNECTED, null);
                } else if (elem.getAttribute("type") === "error") {
                  this._changeConnectStatus(Strophe.Status.AUTHFAIL, null, elem);

                  this.disconnect('authentication failed');
                }

                return false;
              }
              /** PrivateFunction: _addSysTimedHandler
               *  _Private_ function to add a system level timed handler.
               *
               *  This function is used to add a Strophe.TimedHandler for the
               *  library code.  System timed handlers are allowed to run before
               *  authentication is complete.
               *
               *  Parameters:
               *    (Integer) period - The period of the handler.
               *    (Function) handler - The callback function.
               */


              _addSysTimedHandler(period, handler) {
                const thand = new Strophe.TimedHandler(period, handler);
                thand.user = false;
                this.addTimeds.push(thand);
                return thand;
              }
              /** PrivateFunction: _addSysHandler
               *  _Private_ function to add a system level stanza handler.
               *
               *  This function is used to add a Strophe.Handler for the
               *  library code.  System stanza handlers are allowed to run before
               *  authentication is complete.
               *
               *  Parameters:
               *    (Function) handler - The callback function.
               *    (String) ns - The namespace to match.
               *    (String) name - The stanza name to match.
               *    (String) type - The stanza type attribute to match.
               *    (String) id - The stanza id attribute to match.
               */


              _addSysHandler(handler, ns, name, type, id) {
                const hand = new Strophe.Handler(handler, ns, name, type, id);
                hand.user = false;
                this.addHandlers.push(hand);
                return hand;
              }
              /** PrivateFunction: _onDisconnectTimeout
               *  _Private_ timeout handler for handling non-graceful disconnection.
               *
               *  If the graceful disconnect process does not complete within the
               *  time allotted, this handler finishes the disconnect anyway.
               *
               *  Returns:
               *    false to remove the handler.
               */


              _onDisconnectTimeout() {
                Strophe.debug("_onDisconnectTimeout was called");

                this._changeConnectStatus(Strophe.Status.CONNTIMEOUT, null);

                this._proto._onDisconnectTimeout(); // actually disconnect


                this._doDisconnect();

                return false;
              }
              /** PrivateFunction: _onIdle
               *  _Private_ handler to process events during idle cycle.
               *
               *  This handler is called every 100ms to fire timed handlers that
               *  are ready and keep poll requests going.
               */


              _onIdle() {
                // add timed handlers scheduled for addition
                // NOTE: we add before remove in the case a timed handler is
                // added and then deleted before the next _onIdle() call.
                while (this.addTimeds.length > 0) {
                  this.timedHandlers.push(this.addTimeds.pop());
                } // remove timed handlers that have been scheduled for deletion


                while (this.removeTimeds.length > 0) {
                  const thand = this.removeTimeds.pop();
                  const i = this.timedHandlers.indexOf(thand);

                  if (i >= 0) {
                    this.timedHandlers.splice(i, 1);
                  }
                } // call ready timed handlers


                const now = new Date().getTime();
                const newList = [];

                for (let i = 0; i < this.timedHandlers.length; i++) {
                  const thand = this.timedHandlers[i];

                  if (this.authenticated || !thand.user) {
                    const since = thand.lastCalled + thand.period;

                    if (since - now <= 0) {
                      if (thand.run()) {
                        newList.push(thand);
                      }
                    } else {
                      newList.push(thand);
                    }
                  }
                }

                this.timedHandlers = newList;
                clearTimeout(this._idleTimeout);

                this._proto._onIdle(); // reactivate the timer only if connected


                if (this.connected) {
                  this._idleTimeout = setTimeout(() => this._onIdle(), 100);
                }
              }

            };
            Strophe.SASLMechanism = SASLMechanism;
            /** Constants: SASL mechanisms
             *  Available authentication mechanisms
             *
             *  Strophe.SASLAnonymous   - SASL ANONYMOUS authentication.
             *  Strophe.SASLPlain       - SASL PLAIN authentication.
             *  Strophe.SASLSHA1        - SASL SCRAM-SHA-1 authentication
             *  Strophe.SASLOAuthBearer - SASL OAuth Bearer authentication
             *  Strophe.SASLExternal    - SASL EXTERNAL authentication
             *  Strophe.SASLXOAuth2     - SASL X-OAuth2 authentication
             */

            Strophe.SASLAnonymous = SASLAnonymous;
            Strophe.SASLPlain = SASLPlain;
            Strophe.SASLSHA1 = SASLSHA1;
            Strophe.SASLOAuthBearer = SASLOAuthBearer;
            Strophe.SASLExternal = SASLExternal;
            Strophe.SASLXOAuth2 = SASLXOAuth2;
            var core = {
              'Strophe': Strophe,
              '$build': $build,
              '$iq': $iq,
              '$msg': $msg,
              '$pres': $pres,
              'SHA1': SHA1,
              'MD5': MD5,
              'b64_hmac_sha1': SHA1.b64_hmac_sha1,
              'b64_sha1': SHA1.b64_sha1,
              'str_hmac_sha1': SHA1.str_hmac_sha1,
              'str_sha1': SHA1.str_sha1
            };

            /*
                This program is distributed under the terms of the MIT license.
                Please see the LICENSE file for details.

                Copyright 2006-2008, OGG, LLC
            */
            /** PrivateClass: Strophe.Request
             *  _Private_ helper class that provides a cross implementation abstraction
             *  for a BOSH related XMLHttpRequest.
             *
             *  The Strophe.Request class is used internally to encapsulate BOSH request
             *  information.  It is not meant to be used from user's code.
             */

            Strophe.Request = class Request {
              /** PrivateConstructor: Strophe.Request
               *  Create and initialize a new Strophe.Request object.
               *
               *  Parameters:
               *    (XMLElement) elem - The XML data to be sent in the request.
               *    (Function) func - The function that will be called when the
               *      XMLHttpRequest readyState changes.
               *    (Integer) rid - The BOSH rid attribute associated with this request.
               *    (Integer) sends - The number of times this same request has been sent.
               */
              constructor(elem, func, rid, sends) {
                this.id = ++Strophe._requestId;
                this.xmlData = elem;
                this.data = Strophe.serialize(elem); // save original function in case we need to make a new request
                // from this one.

                this.origFunc = func;
                this.func = func;
                this.rid = rid;
                this.date = NaN;
                this.sends = sends || 0;
                this.abort = false;
                this.dead = null;

                this.age = function () {
                  if (!this.date) {
                    return 0;
                  }

                  const now = new Date();
                  return (now - this.date) / 1000;
                };

                this.timeDead = function () {
                  if (!this.dead) {
                    return 0;
                  }

                  const now = new Date();
                  return (now - this.dead) / 1000;
                };

                this.xhr = this._newXHR();
              }
              /** PrivateFunction: getResponse
               *  Get a response from the underlying XMLHttpRequest.
               *
               *  This function attempts to get a response from the request and checks
               *  for errors.
               *
               *  Throws:
               *    "parsererror" - A parser error occured.
               *    "bad-format" - The entity has sent XML that cannot be processed.
               *
               *  Returns:
               *    The DOM element tree of the response.
               */


              getResponse() {
                let node = null;

                if (this.xhr.responseXML && this.xhr.responseXML.documentElement) {
                  node = this.xhr.responseXML.documentElement;

                  if (node.tagName === "parsererror") {
                    Strophe.error("invalid response received");
                    Strophe.error("responseText: " + this.xhr.responseText);
                    Strophe.error("responseXML: " + Strophe.serialize(this.xhr.responseXML));
                    throw new Error("parsererror");
                  }
                } else if (this.xhr.responseText) {
                  // In React Native, we may get responseText but no responseXML.  We can try to parse it manually.
                  Strophe.debug("Got responseText but no responseXML; attempting to parse it with DOMParser...");
                  node = new DOMParser().parseFromString(this.xhr.responseText, 'application/xml').documentElement;

                  if (!node) {
                    throw new Error('Parsing produced null node');
                  } else if (node.querySelector('parsererror')) {
                    Strophe.error("invalid response received: " + node.querySelector('parsererror').textContent);
                    Strophe.error("responseText: " + this.xhr.responseText);
                    const error = new Error();
                    error.name = Strophe.ErrorCondition.BAD_FORMAT;
                    throw error;
                  }
                }

                return node;
              }
              /** PrivateFunction: _newXHR
               *  _Private_ helper function to create XMLHttpRequests.
               *
               *  This function creates XMLHttpRequests across all implementations.
               *
               *  Returns:
               *    A new XMLHttpRequest.
               */


              _newXHR() {
                let xhr = null;

                if (window.XMLHttpRequest) {
                  xhr = new XMLHttpRequest();

                  if (xhr.overrideMimeType) {
                    xhr.overrideMimeType("text/xml; charset=utf-8");
                  }
                } else if (window.ActiveXObject) {
                  xhr = new ActiveXObject("Microsoft.XMLHTTP");
                } // use Function.bind() to prepend ourselves as an argument


                xhr.onreadystatechange = this.func.bind(null, this);
                return xhr;
              }

            };
            /** Class: Strophe.Bosh
             *  _Private_ helper class that handles BOSH Connections
             *
             *  The Strophe.Bosh class is used internally by Strophe.Connection
             *  to encapsulate BOSH sessions. It is not meant to be used from user's code.
             */

            /** File: bosh.js
             *  A JavaScript library to enable BOSH in Strophejs.
             *
             *  this library uses Bidirectional-streams Over Synchronous HTTP (BOSH)
             *  to emulate a persistent, stateful, two-way connection to an XMPP server.
             *  More information on BOSH can be found in XEP 124.
             */

            /** PrivateConstructor: Strophe.Bosh
             *  Create and initialize a Strophe.Bosh object.
             *
             *  Parameters:
             *    (Strophe.Connection) connection - The Strophe.Connection that will use BOSH.
             *
             *  Returns:
             *    A new Strophe.Bosh object.
             */

            Strophe.Bosh = class Bosh {
              constructor(connection) {
                this._conn = connection;
                /* request id for body tags */

                this.rid = Math.floor(Math.random() * 4294967295);
                /* The current session ID. */

                this.sid = null; // default BOSH values

                this.hold = 1;
                this.wait = 60;
                this.window = 5;
                this.errors = 0;
                this.inactivity = null;
                this.lastResponseHeaders = null;
                this._requests = [];
              }
              /** PrivateFunction: _buildBody
               *  _Private_ helper function to generate the <body/> wrapper for BOSH.
               *
               *  Returns:
               *    A Strophe.Builder with a <body/> element.
               */


              _buildBody() {
                const bodyWrap = $build('body', {
                  'rid': this.rid++,
                  'xmlns': Strophe.NS.HTTPBIND
                });

                if (this.sid !== null) {
                  bodyWrap.attrs({
                    'sid': this.sid
                  });
                }

                if (this._conn.options.keepalive && this._conn._sessionCachingSupported()) {
                  this._cacheSession();
                }

                return bodyWrap;
              }
              /** PrivateFunction: _reset
               *  Reset the connection.
               *
               *  This function is called by the reset function of the Strophe Connection
               */


              _reset() {
                this.rid = Math.floor(Math.random() * 4294967295);
                this.sid = null;
                this.errors = 0;

                if (this._conn._sessionCachingSupported()) {
                  window.sessionStorage.removeItem('strophe-bosh-session');
                }

                this._conn.nextValidRid(this.rid);
              }
              /** PrivateFunction: _connect
               *  _Private_ function that initializes the BOSH connection.
               *
               *  Creates and sends the Request that initializes the BOSH connection.
               */


              _connect(wait, hold, route) {
                this.wait = wait || this.wait;
                this.hold = hold || this.hold;
                this.errors = 0;

                const body = this._buildBody().attrs({
                  "to": this._conn.domain,
                  "xml:lang": "en",
                  "wait": this.wait,
                  "hold": this.hold,
                  "content": "text/xml; charset=utf-8",
                  "ver": "1.6",
                  "xmpp:version": "1.0",
                  "xmlns:xmpp": Strophe.NS.BOSH
                });

                if (route) {
                  body.attrs({
                    'route': route
                  });
                }

                const _connect_cb = this._conn._connect_cb;

                this._requests.push(new Strophe.Request(body.tree(), this._onRequestStateChange.bind(this, _connect_cb.bind(this._conn)), body.tree().getAttribute("rid")));

                this._throttledRequestHandler();
              }
              /** PrivateFunction: _attach
               *  Attach to an already created and authenticated BOSH session.
               *
               *  This function is provided to allow Strophe to attach to BOSH
               *  sessions which have been created externally, perhaps by a Web
               *  application.  This is often used to support auto-login type features
               *  without putting user credentials into the page.
               *
               *  Parameters:
               *    (String) jid - The full JID that is bound by the session.
               *    (String) sid - The SID of the BOSH session.
               *    (String) rid - The current RID of the BOSH session.  This RID
               *      will be used by the next request.
               *    (Function) callback The connect callback function.
               *    (Integer) wait - The optional HTTPBIND wait value.  This is the
               *      time the server will wait before returning an empty result for
               *      a request.  The default setting of 60 seconds is recommended.
               *      Other settings will require tweaks to the Strophe.TIMEOUT value.
               *    (Integer) hold - The optional HTTPBIND hold value.  This is the
               *      number of connections the server will hold at one time.  This
               *      should almost always be set to 1 (the default).
               *    (Integer) wind - The optional HTTBIND window value.  This is the
               *      allowed range of request ids that are valid.  The default is 5.
               */


              _attach(jid, sid, rid, callback, wait, hold, wind) {
                this._conn.jid = jid;
                this.sid = sid;
                this.rid = rid;
                this._conn.connect_callback = callback;
                this._conn.domain = Strophe.getDomainFromJid(this._conn.jid);
                this._conn.authenticated = true;
                this._conn.connected = true;
                this.wait = wait || this.wait;
                this.hold = hold || this.hold;
                this.window = wind || this.window;

                this._conn._changeConnectStatus(Strophe.Status.ATTACHED, null);
              }
              /** PrivateFunction: _restore
               *  Attempt to restore a cached BOSH session
               *
               *  Parameters:
               *    (String) jid - The full JID that is bound by the session.
               *      This parameter is optional but recommended, specifically in cases
               *      where prebinded BOSH sessions are used where it's important to know
               *      that the right session is being restored.
               *    (Function) callback The connect callback function.
               *    (Integer) wait - The optional HTTPBIND wait value.  This is the
               *      time the server will wait before returning an empty result for
               *      a request.  The default setting of 60 seconds is recommended.
               *      Other settings will require tweaks to the Strophe.TIMEOUT value.
               *    (Integer) hold - The optional HTTPBIND hold value.  This is the
               *      number of connections the server will hold at one time.  This
               *      should almost always be set to 1 (the default).
               *    (Integer) wind - The optional HTTBIND window value.  This is the
               *      allowed range of request ids that are valid.  The default is 5.
               */


              _restore(jid, callback, wait, hold, wind) {
                const session = JSON.parse(window.sessionStorage.getItem('strophe-bosh-session'));

                if (typeof session !== "undefined" && session !== null && session.rid && session.sid && session.jid && (typeof jid === "undefined" || jid === null || Strophe.getBareJidFromJid(session.jid) === Strophe.getBareJidFromJid(jid) || // If authcid is null, then it's an anonymous login, so
                // we compare only the domains:
                Strophe.getNodeFromJid(jid) === null && Strophe.getDomainFromJid(session.jid) === jid)) {
                  this._conn.restored = true;

                  this._attach(session.jid, session.sid, session.rid, callback, wait, hold, wind);
                } else {
                  const error = new Error("_restore: no restoreable session.");
                  error.name = "StropheSessionError";
                  throw error;
                }
              }
              /** PrivateFunction: _cacheSession
               *  _Private_ handler for the beforeunload event.
               *
               *  This handler is used to process the Bosh-part of the initial request.
               *  Parameters:
               *    (Strophe.Request) bodyWrap - The received stanza.
               */


              _cacheSession() {
                if (this._conn.authenticated) {
                  if (this._conn.jid && this.rid && this.sid) {
                    window.sessionStorage.setItem('strophe-bosh-session', JSON.stringify({
                      'jid': this._conn.jid,
                      'rid': this.rid,
                      'sid': this.sid
                    }));
                  }
                } else {
                  window.sessionStorage.removeItem('strophe-bosh-session');
                }
              }
              /** PrivateFunction: _connect_cb
               *  _Private_ handler for initial connection request.
               *
               *  This handler is used to process the Bosh-part of the initial request.
               *  Parameters:
               *    (Strophe.Request) bodyWrap - The received stanza.
               */


              _connect_cb(bodyWrap) {
                const typ = bodyWrap.getAttribute("type");

                if (typ !== null && typ === "terminate") {
                  // an error occurred
                  let cond = bodyWrap.getAttribute("condition");
                  Strophe.error("BOSH-Connection failed: " + cond);
                  const conflict = bodyWrap.getElementsByTagName("conflict");

                  if (cond !== null) {
                    if (cond === "remote-stream-error" && conflict.length > 0) {
                      cond = "conflict";
                    }

                    this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, cond);
                  } else {
                    this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "unknown");
                  }

                  this._conn._doDisconnect(cond);

                  return Strophe.Status.CONNFAIL;
                } // check to make sure we don't overwrite these if _connect_cb is
                // called multiple times in the case of missing stream:features


                if (!this.sid) {
                  this.sid = bodyWrap.getAttribute("sid");
                }

                const wind = bodyWrap.getAttribute('requests');

                if (wind) {
                  this.window = parseInt(wind, 10);
                }

                const hold = bodyWrap.getAttribute('hold');

                if (hold) {
                  this.hold = parseInt(hold, 10);
                }

                const wait = bodyWrap.getAttribute('wait');

                if (wait) {
                  this.wait = parseInt(wait, 10);
                }

                const inactivity = bodyWrap.getAttribute('inactivity');

                if (inactivity) {
                  this.inactivity = parseInt(inactivity, 10);
                }
              }
              /** PrivateFunction: _disconnect
               *  _Private_ part of Connection.disconnect for Bosh
               *
               *  Parameters:
               *    (Request) pres - This stanza will be sent before disconnecting.
               */


              _disconnect(pres) {
                this._sendTerminate(pres);
              }
              /** PrivateFunction: _doDisconnect
               *  _Private_ function to disconnect.
               *
               *  Resets the SID and RID.
               */


              _doDisconnect() {
                this.sid = null;
                this.rid = Math.floor(Math.random() * 4294967295);

                if (this._conn._sessionCachingSupported()) {
                  window.sessionStorage.removeItem('strophe-bosh-session');
                }

                this._conn.nextValidRid(this.rid);
              }
              /** PrivateFunction: _emptyQueue
               * _Private_ function to check if the Request queue is empty.
               *
               *  Returns:
               *    True, if there are no Requests queued, False otherwise.
               */


              _emptyQueue() {
                return this._requests.length === 0;
              }
              /** PrivateFunction: _callProtocolErrorHandlers
               *  _Private_ function to call error handlers registered for HTTP errors.
               *
               *  Parameters:
               *    (Strophe.Request) req - The request that is changing readyState.
               */


              _callProtocolErrorHandlers(req) {
                const reqStatus = Bosh._getRequestStatus(req);

                const err_callback = this._conn.protocolErrorHandlers.HTTP[reqStatus];

                if (err_callback) {
                  err_callback.call(this, reqStatus);
                }
              }
              /** PrivateFunction: _hitError
               *  _Private_ function to handle the error count.
               *
               *  Requests are resent automatically until their error count reaches
               *  5.  Each time an error is encountered, this function is called to
               *  increment the count and disconnect if the count is too high.
               *
               *  Parameters:
               *    (Integer) reqStatus - The request status.
               */


              _hitError(reqStatus) {
                this.errors++;
                Strophe.warn("request errored, status: " + reqStatus + ", number of errors: " + this.errors);

                if (this.errors > 4) {
                  this._conn._onDisconnectTimeout();
                }
              }
              /** PrivateFunction: _no_auth_received
               *
               * Called on stream start/restart when no stream:features
               * has been received and sends a blank poll request.
               */


              _no_auth_received(callback) {
                Strophe.warn("Server did not yet offer a supported authentication " + "mechanism. Sending a blank poll request.");

                if (callback) {
                  callback = callback.bind(this._conn);
                } else {
                  callback = this._conn._connect_cb.bind(this._conn);
                }

                const body = this._buildBody();

                this._requests.push(new Strophe.Request(body.tree(), this._onRequestStateChange.bind(this, callback), body.tree().getAttribute("rid")));

                this._throttledRequestHandler();
              }
              /** PrivateFunction: _onDisconnectTimeout
               *  _Private_ timeout handler for handling non-graceful disconnection.
               *
               *  Cancels all remaining Requests and clears the queue.
               */


              _onDisconnectTimeout() {
                this._abortAllRequests();
              }
              /** PrivateFunction: _abortAllRequests
               *  _Private_ helper function that makes sure all pending requests are aborted.
               */


              _abortAllRequests() {
                while (this._requests.length > 0) {
                  const req = this._requests.pop();

                  req.abort = true;
                  req.xhr.abort();

                  req.xhr.onreadystatechange = function () {};
                }
              }
              /** PrivateFunction: _onIdle
               *  _Private_ handler called by Strophe.Connection._onIdle
               *
               *  Sends all queued Requests or polls with empty Request if there are none.
               */


              _onIdle() {
                const data = this._conn._data; // if no requests are in progress, poll

                if (this._conn.authenticated && this._requests.length === 0 && data.length === 0 && !this._conn.disconnecting) {
                  Strophe.debug("no requests during idle cycle, sending blank request");
                  data.push(null);
                }

                if (this._conn.paused) {
                  return;
                }

                if (this._requests.length < 2 && data.length > 0) {
                  const body = this._buildBody();

                  for (let i = 0; i < data.length; i++) {
                    if (data[i] !== null) {
                      if (data[i] === "restart") {
                        body.attrs({
                          "to": this._conn.domain,
                          "xml:lang": "en",
                          "xmpp:restart": "true",
                          "xmlns:xmpp": Strophe.NS.BOSH
                        });
                      } else {
                        body.cnode(data[i]).up();
                      }
                    }
                  }

                  delete this._conn._data;
                  this._conn._data = [];

                  this._requests.push(new Strophe.Request(body.tree(), this._onRequestStateChange.bind(this, this._conn._dataRecv.bind(this._conn)), body.tree().getAttribute("rid")));

                  this._throttledRequestHandler();
                }

                if (this._requests.length > 0) {
                  const time_elapsed = this._requests[0].age();

                  if (this._requests[0].dead !== null) {
                    if (this._requests[0].timeDead() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait)) {
                      this._throttledRequestHandler();
                    }
                  }

                  if (time_elapsed > Math.floor(Strophe.TIMEOUT * this.wait)) {
                    Strophe.warn("Request " + this._requests[0].id + " timed out, over " + Math.floor(Strophe.TIMEOUT * this.wait) + " seconds since last activity");

                    this._throttledRequestHandler();
                  }
                }
              }
              /** PrivateFunction: _getRequestStatus
               *
               *  Returns the HTTP status code from a Strophe.Request
               *
               *  Parameters:
               *    (Strophe.Request) req - The Strophe.Request instance.
               *    (Integer) def - The default value that should be returned if no
               *          status value was found.
               */


              static _getRequestStatus(req, def) {
                let reqStatus;

                if (req.xhr.readyState === 4) {
                  try {
                    reqStatus = req.xhr.status;
                  } catch (e) {
                    // ignore errors from undefined status attribute. Works
                    // around a browser bug
                    Strophe.error("Caught an error while retrieving a request's status, " + "reqStatus: " + reqStatus);
                  }
                }

                if (typeof reqStatus === "undefined") {
                  reqStatus = typeof def === 'number' ? def : 0;
                }

                return reqStatus;
              }
              /** PrivateFunction: _onRequestStateChange
               *  _Private_ handler for Strophe.Request state changes.
               *
               *  This function is called when the XMLHttpRequest readyState changes.
               *  It contains a lot of error handling logic for the many ways that
               *  requests can fail, and calls the request callback when requests
               *  succeed.
               *
               *  Parameters:
               *    (Function) func - The handler for the request.
               *    (Strophe.Request) req - The request that is changing readyState.
               */


              _onRequestStateChange(func, req) {
                Strophe.debug("request id " + req.id + "." + req.sends + " state changed to " + req.xhr.readyState);

                if (req.abort) {
                  req.abort = false;
                  return;
                }

                if (req.xhr.readyState !== 4) {
                  // The request is not yet complete
                  return;
                }

                const reqStatus = Bosh._getRequestStatus(req);

                this.lastResponseHeaders = req.xhr.getAllResponseHeaders();

                if (this._conn.disconnecting && reqStatus >= 400) {
                  this._hitError(reqStatus);

                  this._callProtocolErrorHandlers(req);

                  return;
                }

                const reqIs0 = this._requests[0] === req;
                const reqIs1 = this._requests[1] === req;
                const valid_request = reqStatus > 0 && reqStatus < 500;
                const too_many_retries = req.sends > this._conn.maxRetries;

                if (valid_request || too_many_retries) {
                  // remove from internal queue
                  this._removeRequest(req);

                  Strophe.debug("request id " + req.id + " should now be removed");
                }

                if (reqStatus === 200) {
                  // request succeeded
                  // if request 1 finished, or request 0 finished and request
                  // 1 is over Strophe.SECONDARY_TIMEOUT seconds old, we need to
                  // restart the other - both will be in the first spot, as the
                  // completed request has been removed from the queue already
                  if (reqIs1 || reqIs0 && this._requests.length > 0 && this._requests[0].age() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait)) {
                    this._restartRequest(0);
                  }

                  this._conn.nextValidRid(Number(req.rid) + 1);

                  Strophe.debug("request id " + req.id + "." + req.sends + " got 200");
                  func(req); // call handler

                  this.errors = 0;
                } else if (reqStatus === 0 || reqStatus >= 400 && reqStatus < 600 || reqStatus >= 12000) {
                  // request failed
                  Strophe.error("request id " + req.id + "." + req.sends + " error " + reqStatus + " happened");

                  this._hitError(reqStatus);

                  this._callProtocolErrorHandlers(req);

                  if (reqStatus >= 400 && reqStatus < 500) {
                    this._conn._changeConnectStatus(Strophe.Status.DISCONNECTING, null);

                    this._conn._doDisconnect();
                  }
                } else {
                  Strophe.error("request id " + req.id + "." + req.sends + " error " + reqStatus + " happened");
                }

                if (!valid_request && !too_many_retries) {
                  this._throttledRequestHandler();
                } else if (too_many_retries && !this._conn.connected) {
                  this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "giving-up");
                }
              }
              /** PrivateFunction: _processRequest
               *  _Private_ function to process a request in the queue.
               *
               *  This function takes requests off the queue and sends them and
               *  restarts dead requests.
               *
               *  Parameters:
               *    (Integer) i - The index of the request in the queue.
               */


              _processRequest(i) {
                let req = this._requests[i];

                const reqStatus = Bosh._getRequestStatus(req, -1); // make sure we limit the number of retries


                if (req.sends > this._conn.maxRetries) {
                  this._conn._onDisconnectTimeout();

                  return;
                }

                const time_elapsed = req.age();
                const primary_timeout = !isNaN(time_elapsed) && time_elapsed > Math.floor(Strophe.TIMEOUT * this.wait);
                const secondary_timeout = req.dead !== null && req.timeDead() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait);
                const server_error = req.xhr.readyState === 4 && (reqStatus < 1 || reqStatus >= 500);

                if (primary_timeout || secondary_timeout || server_error) {
                  if (secondary_timeout) {
                    Strophe.error(`Request ${this._requests[i].id} timed out (secondary), restarting`);
                  }

                  req.abort = true;
                  req.xhr.abort(); // setting to null fails on IE6, so set to empty function

                  req.xhr.onreadystatechange = function () {};

                  this._requests[i] = new Strophe.Request(req.xmlData, req.origFunc, req.rid, req.sends);
                  req = this._requests[i];
                }

                if (req.xhr.readyState === 0) {
                  Strophe.debug("request id " + req.id + "." + req.sends + " posting");

                  try {
                    const content_type = this._conn.options.contentType || "text/xml; charset=utf-8";
                    req.xhr.open("POST", this._conn.service, this._conn.options.sync ? false : true);

                    if (typeof req.xhr.setRequestHeader !== 'undefined') {
                      // IE9 doesn't have setRequestHeader
                      req.xhr.setRequestHeader("Content-Type", content_type);
                    }

                    if (this._conn.options.withCredentials) {
                      req.xhr.withCredentials = true;
                    }
                  } catch (e2) {
                    Strophe.error("XHR open failed: " + e2.toString());

                    if (!this._conn.connected) {
                      this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "bad-service");
                    }

                    this._conn.disconnect();

                    return;
                  } // Fires the XHR request -- may be invoked immediately
                  // or on a gradually expanding retry window for reconnects


                  const sendFunc = () => {
                    req.date = new Date();

                    if (this._conn.options.customHeaders) {
                      const headers = this._conn.options.customHeaders;

                      for (const header in headers) {
                        if (Object.prototype.hasOwnProperty.call(headers, header)) {
                          req.xhr.setRequestHeader(header, headers[header]);
                        }
                      }
                    }

                    req.xhr.send(req.data);
                  }; // Implement progressive backoff for reconnects --
                  // First retry (send === 1) should also be instantaneous


                  if (req.sends > 1) {
                    // Using a cube of the retry number creates a nicely
                    // expanding retry window
                    const backoff = Math.min(Math.floor(Strophe.TIMEOUT * this.wait), Math.pow(req.sends, 3)) * 1000;
                    setTimeout(function () {
                      // XXX: setTimeout should be called only with function expressions (23974bc1)
                      sendFunc();
                    }, backoff);
                  } else {
                    sendFunc();
                  }

                  req.sends++;

                  if (this._conn.xmlOutput !== Strophe.Connection.prototype.xmlOutput) {
                    if (req.xmlData.nodeName === this.strip && req.xmlData.childNodes.length) {
                      this._conn.xmlOutput(req.xmlData.childNodes[0]);
                    } else {
                      this._conn.xmlOutput(req.xmlData);
                    }
                  }

                  if (this._conn.rawOutput !== Strophe.Connection.prototype.rawOutput) {
                    this._conn.rawOutput(req.data);
                  }
                } else {
                  Strophe.debug("_processRequest: " + (i === 0 ? "first" : "second") + " request has readyState of " + req.xhr.readyState);
                }
              }
              /** PrivateFunction: _removeRequest
               *  _Private_ function to remove a request from the queue.
               *
               *  Parameters:
               *    (Strophe.Request) req - The request to remove.
               */


              _removeRequest(req) {
                Strophe.debug("removing request");

                for (let i = this._requests.length - 1; i >= 0; i--) {
                  if (req === this._requests[i]) {
                    this._requests.splice(i, 1);
                  }
                } // IE6 fails on setting to null, so set to empty function


                req.xhr.onreadystatechange = function () {};

                this._throttledRequestHandler();
              }
              /** PrivateFunction: _restartRequest
               *  _Private_ function to restart a request that is presumed dead.
               *
               *  Parameters:
               *    (Integer) i - The index of the request in the queue.
               */


              _restartRequest(i) {
                const req = this._requests[i];

                if (req.dead === null) {
                  req.dead = new Date();
                }

                this._processRequest(i);
              }
              /** PrivateFunction: _reqToData
               * _Private_ function to get a stanza out of a request.
               *
               * Tries to extract a stanza out of a Request Object.
               * When this fails the current connection will be disconnected.
               *
               *  Parameters:
               *    (Object) req - The Request.
               *
               *  Returns:
               *    The stanza that was passed.
               */


              _reqToData(req) {
                try {
                  return req.getResponse();
                } catch (e) {
                  if (e.message !== "parsererror") {
                    throw e;
                  }

                  this._conn.disconnect("strophe-parsererror");
                }
              }
              /** PrivateFunction: _sendTerminate
               *  _Private_ function to send initial disconnect sequence.
               *
               *  This is the first step in a graceful disconnect.  It sends
               *  the BOSH server a terminate body and includes an unavailable
               *  presence if authentication has completed.
               */


              _sendTerminate(pres) {
                Strophe.debug("_sendTerminate was called");

                const body = this._buildBody().attrs({
                  type: "terminate"
                });

                if (pres) {
                  body.cnode(pres.tree());
                }

                const req = new Strophe.Request(body.tree(), this._onRequestStateChange.bind(this, this._conn._dataRecv.bind(this._conn)), body.tree().getAttribute("rid"));

                this._requests.push(req);

                this._throttledRequestHandler();
              }
              /** PrivateFunction: _send
               *  _Private_ part of the Connection.send function for BOSH
               *
               * Just triggers the RequestHandler to send the messages that are in the queue
               */


              _send() {
                clearTimeout(this._conn._idleTimeout);

                this._throttledRequestHandler();

                this._conn._idleTimeout = setTimeout(() => this._conn._onIdle(), 100);
              }
              /** PrivateFunction: _sendRestart
               *
               *  Send an xmpp:restart stanza.
               */


              _sendRestart() {
                this._throttledRequestHandler();

                clearTimeout(this._conn._idleTimeout);
              }
              /** PrivateFunction: _throttledRequestHandler
               *  _Private_ function to throttle requests to the connection window.
               *
               *  This function makes sure we don't send requests so fast that the
               *  request ids overflow the connection window in the case that one
               *  request died.
               */


              _throttledRequestHandler() {
                if (!this._requests) {
                  Strophe.debug("_throttledRequestHandler called with " + "undefined requests");
                } else {
                  Strophe.debug("_throttledRequestHandler called with " + this._requests.length + " requests");
                }

                if (!this._requests || this._requests.length === 0) {
                  return;
                }

                if (this._requests.length > 0) {
                  this._processRequest(0);
                }

                if (this._requests.length > 1 && Math.abs(this._requests[0].rid - this._requests[1].rid) < this.window) {
                  this._processRequest(1);
                }
              }

            };
            /** Variable: strip
             *
             *  BOSH-Connections will have all stanzas wrapped in a <body> tag when
             *  passed to <Strophe.Connection.xmlInput> or <Strophe.Connection.xmlOutput>.
             *  To strip this tag, User code can set <Strophe.Bosh.strip> to "body":
             *
             *  > Strophe.Bosh.prototype.strip = "body";
             *
             *  This will enable stripping of the body tag in both
             *  <Strophe.Connection.xmlInput> and <Strophe.Connection.xmlOutput>.
             */

            Strophe.Bosh.prototype.strip = null;

            /*
                This program is distributed under the terms of the MIT license.
                Please see the LICENSE file for details.

                Copyright 2006-2008, OGG, LLC
            */
            /** Class: Strophe.WebSocket
             *  _Private_ helper class that handles WebSocket Connections
             *
             *  The Strophe.WebSocket class is used internally by Strophe.Connection
             *  to encapsulate WebSocket sessions. It is not meant to be used from user's code.
             */

            /** File: websocket.js
             *  A JavaScript library to enable XMPP over Websocket in Strophejs.
             *
             *  This file implements XMPP over WebSockets for Strophejs.
             *  If a Connection is established with a Websocket url (ws://...)
             *  Strophe will use WebSockets.
             *  For more information on XMPP-over-WebSocket see RFC 7395:
             *  http://tools.ietf.org/html/rfc7395
             *
             *  WebSocket support implemented by Andreas Guth (andreas.guth@rwth-aachen.de)
             */

            Strophe.Websocket = class Websocket {
              /** PrivateConstructor: Strophe.Websocket
               *  Create and initialize a Strophe.WebSocket object.
               *  Currently only sets the connection Object.
               *
               *  Parameters:
               *    (Strophe.Connection) connection - The Strophe.Connection that will use WebSockets.
               *
               *  Returns:
               *    A new Strophe.WebSocket object.
               */
              constructor(connection) {
                this._conn = connection;
                this.strip = "wrapper";
                const service = connection.service;

                if (service.indexOf("ws:") !== 0 && service.indexOf("wss:") !== 0) {
                  // If the service is not an absolute URL, assume it is a path and put the absolute
                  // URL together from options, current URL and the path.
                  let new_service = "";

                  if (connection.options.protocol === "ws" && window.location.protocol !== "https:") {
                    new_service += "ws";
                  } else {
                    new_service += "wss";
                  }

                  new_service += "://" + window.location.host;

                  if (service.indexOf("/") !== 0) {
                    new_service += window.location.pathname + service;
                  } else {
                    new_service += service;
                  }

                  connection.service = new_service;
                }
              }
              /** PrivateFunction: _buildStream
               *  _Private_ helper function to generate the <stream> start tag for WebSockets
               *
               *  Returns:
               *    A Strophe.Builder with a <stream> element.
               */


              _buildStream() {
                return $build("open", {
                  "xmlns": Strophe.NS.FRAMING,
                  "to": this._conn.domain,
                  "version": '1.0'
                });
              }
              /** PrivateFunction: _checkStreamError
               * _Private_ checks a message for stream:error
               *
               *  Parameters:
               *    (Strophe.Request) bodyWrap - The received stanza.
               *    connectstatus - The ConnectStatus that will be set on error.
               *  Returns:
               *     true if there was a streamerror, false otherwise.
               */


              _checkStreamError(bodyWrap, connectstatus) {
                let errors;

                if (bodyWrap.getElementsByTagNameNS) {
                  errors = bodyWrap.getElementsByTagNameNS(Strophe.NS.STREAM, "error");
                } else {
                  errors = bodyWrap.getElementsByTagName("stream:error");
                }

                if (errors.length === 0) {
                  return false;
                }

                const error = errors[0];
                let condition = "";
                let text = "";
                const ns = "urn:ietf:params:xml:ns:xmpp-streams";

                for (let i = 0; i < error.childNodes.length; i++) {
                  const e = error.childNodes[i];

                  if (e.getAttribute("xmlns") !== ns) {
                    break;
                  }

                  if (e.nodeName === "text") {
                    text = e.textContent;
                  } else {
                    condition = e.nodeName;
                  }
                }

                let errorString = "WebSocket stream error: ";

                if (condition) {
                  errorString += condition;
                } else {
                  errorString += "unknown";
                }

                if (text) {
                  errorString += " - " + text;
                }

                Strophe.error(errorString); // close the connection on stream_error

                this._conn._changeConnectStatus(connectstatus, condition);

                this._conn._doDisconnect();

                return true;
              }
              /** PrivateFunction: _reset
               *  Reset the connection.
               *
               *  This function is called by the reset function of the Strophe Connection.
               *  Is not needed by WebSockets.
               */


              _reset() {
                // eslint-disable-line class-methods-use-this
                return;
              }
              /** PrivateFunction: _connect
               *  _Private_ function called by Strophe.Connection.connect
               *
               *  Creates a WebSocket for a connection and assigns Callbacks to it.
               *  Does nothing if there already is a WebSocket.
               */


              _connect() {
                // Ensure that there is no open WebSocket from a previous Connection.
                this._closeSocket();

                this.socket = new WebSocket(this._conn.service, "xmpp");

                this.socket.onopen = () => this._onOpen();

                this.socket.onerror = e => this._onError(e);

                this.socket.onclose = e => this._onClose(e); // Gets replaced with this._onMessage once _onInitialMessage is called


                this.socket.onmessage = message => this._onInitialMessage(message);
              }
              /** PrivateFunction: _connect_cb
               *  _Private_ function called by Strophe.Connection._connect_cb
               *
               * checks for stream:error
               *
               *  Parameters:
               *    (Strophe.Request) bodyWrap - The received stanza.
               */


              _connect_cb(bodyWrap) {
                const error = this._checkStreamError(bodyWrap, Strophe.Status.CONNFAIL);

                if (error) {
                  return Strophe.Status.CONNFAIL;
                }
              }
              /** PrivateFunction: _handleStreamStart
               * _Private_ function that checks the opening <open /> tag for errors.
               *
               * Disconnects if there is an error and returns false, true otherwise.
               *
               *  Parameters:
               *    (Node) message - Stanza containing the <open /> tag.
               */


              _handleStreamStart(message) {
                let error = false; // Check for errors in the <open /> tag

                const ns = message.getAttribute("xmlns");

                if (typeof ns !== "string") {
                  error = "Missing xmlns in <open />";
                } else if (ns !== Strophe.NS.FRAMING) {
                  error = "Wrong xmlns in <open />: " + ns;
                }

                const ver = message.getAttribute("version");

                if (typeof ver !== "string") {
                  error = "Missing version in <open />";
                } else if (ver !== "1.0") {
                  error = "Wrong version in <open />: " + ver;
                }

                if (error) {
                  this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, error);

                  this._conn._doDisconnect();

                  return false;
                }

                return true;
              }
              /** PrivateFunction: _onInitialMessage
               * _Private_ function that handles the first connection messages.
               *
               * On receiving an opening stream tag this callback replaces itself with the real
               * message handler. On receiving a stream error the connection is terminated.
               */


              _onInitialMessage(message) {
                if (message.data.indexOf("<open ") === 0 || message.data.indexOf("<?xml") === 0) {
                  // Strip the XML Declaration, if there is one
                  const data = message.data.replace(/^(<\?.*?\?>\s*)*/, "");
                  if (data === '') return;
                  const streamStart = new DOMParser().parseFromString(data, "text/xml").documentElement;

                  this._conn.xmlInput(streamStart);

                  this._conn.rawInput(message.data); //_handleStreamSteart will check for XML errors and disconnect on error


                  if (this._handleStreamStart(streamStart)) {
                    //_connect_cb will check for stream:error and disconnect on error
                    this._connect_cb(streamStart);
                  }
                } else if (message.data.indexOf("<close ") === 0) {
                  // <close xmlns="urn:ietf:params:xml:ns:xmpp-framing />
                  // Parse the raw string to an XML element
                  const parsedMessage = new DOMParser().parseFromString(message.data, "text/xml").documentElement; // Report this input to the raw and xml handlers

                  this._conn.xmlInput(parsedMessage);

                  this._conn.rawInput(message.data);

                  const see_uri = parsedMessage.getAttribute("see-other-uri");

                  if (see_uri) {
                    const service = this._conn.service; // Valid scenarios: WSS->WSS, WS->ANY

                    const isSecureRedirect = service.indexOf("wss:") >= 0 && see_uri.indexOf("wss:") >= 0 || service.indexOf("ws:") >= 0;

                    if (isSecureRedirect) {
                      this._conn._changeConnectStatus(Strophe.Status.REDIRECT, "Received see-other-uri, resetting connection");

                      this._conn.reset();

                      this._conn.service = see_uri;

                      this._connect();
                    }
                  } else {
                    this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "Received closing stream");

                    this._conn._doDisconnect();
                  }
                } else {
                  this._replaceMessageHandler();

                  const string = this._streamWrap(message.data);

                  const elem = new DOMParser().parseFromString(string, "text/xml").documentElement;

                  this._conn._connect_cb(elem, null, message.data);
                }
              }
              /** PrivateFunction: _replaceMessageHandler
               *
               * Called by _onInitialMessage in order to replace itself with the general message handler.
               * This method is overridden by Strophe.WorkerWebsocket, which manages a
               * websocket connection via a service worker and doesn't have direct access
               * to the socket.
               */


              _replaceMessageHandler() {
                this.socket.onmessage = m => this._onMessage(m);
              }
              /** PrivateFunction: _disconnect
               *  _Private_ function called by Strophe.Connection.disconnect
               *
               *  Disconnects and sends a last stanza if one is given
               *
               *  Parameters:
               *    (Request) pres - This stanza will be sent before disconnecting.
               */


              _disconnect(pres) {
                if (this.socket && this.socket.readyState !== WebSocket.CLOSED) {
                  if (pres) {
                    this._conn.send(pres);
                  }

                  const close = $build("close", {
                    "xmlns": Strophe.NS.FRAMING
                  });

                  this._conn.xmlOutput(close.tree());

                  const closeString = Strophe.serialize(close);

                  this._conn.rawOutput(closeString);

                  try {
                    this.socket.send(closeString);
                  } catch (e) {
                    Strophe.warn("Couldn't send <close /> tag.");
                  }
                }

                setTimeout(() => this._conn._doDisconnect, 0);
              }
              /** PrivateFunction: _doDisconnect
               *  _Private_ function to disconnect.
               *
               *  Just closes the Socket for WebSockets
               */


              _doDisconnect() {
                Strophe.debug("WebSockets _doDisconnect was called");

                this._closeSocket();
              }
              /** PrivateFunction _streamWrap
               *  _Private_ helper function to wrap a stanza in a <stream> tag.
               *  This is used so Strophe can process stanzas from WebSockets like BOSH
               */


              _streamWrap(stanza) {
                // eslint-disable-line class-methods-use-this
                return "<wrapper>" + stanza + '</wrapper>';
              }
              /** PrivateFunction: _closeSocket
               *  _Private_ function to close the WebSocket.
               *
               *  Closes the socket if it is still open and deletes it
               */


              _closeSocket() {
                if (this.socket) {
                  try {
                    this.socket.onclose = null;
                    this.socket.onerror = null;
                    this.socket.onmessage = null;
                    this.socket.close();
                  } catch (e) {
                    Strophe.debug(e.message);
                  }
                }

                this.socket = null;
              }
              /** PrivateFunction: _emptyQueue
               * _Private_ function to check if the message queue is empty.
               *
               *  Returns:
               *    True, because WebSocket messages are send immediately after queueing.
               */


              _emptyQueue() {
                // eslint-disable-line class-methods-use-this
                return true;
              }
              /** PrivateFunction: _onClose
               * _Private_ function to handle websockets closing.
               */


              _onClose(e) {
                if (this._conn.connected && !this._conn.disconnecting) {
                  Strophe.error("Websocket closed unexpectedly");

                  this._conn._doDisconnect();
                } else if (e && e.code === 1006 && !this._conn.connected && this.socket) {
                  // in case the onError callback was not called (Safari 10 does not
                  // call onerror when the initial connection fails) we need to
                  // dispatch a CONNFAIL status update to be consistent with the
                  // behavior on other browsers.
                  Strophe.error("Websocket closed unexcectedly");

                  this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "The WebSocket connection could not be established or was disconnected.");

                  this._conn._doDisconnect();
                } else {
                  Strophe.debug("Websocket closed");
                }
              }
              /** PrivateFunction: _no_auth_received
               *
               * Called on stream start/restart when no stream:features
               * has been received.
               */


              _no_auth_received(callback) {
                Strophe.error("Server did not offer a supported authentication mechanism");

                this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, Strophe.ErrorCondition.NO_AUTH_MECH);

                if (callback) {
                  callback.call(this._conn);
                }

                this._conn._doDisconnect();
              }
              /** PrivateFunction: _onDisconnectTimeout
               *  _Private_ timeout handler for handling non-graceful disconnection.
               *
               *  This does nothing for WebSockets
               */


              _onDisconnectTimeout() {} // eslint-disable-line class-methods-use-this

              /** PrivateFunction: _abortAllRequests
               *  _Private_ helper function that makes sure all pending requests are aborted.
               */


              _abortAllRequests() {} // eslint-disable-line class-methods-use-this

              /** PrivateFunction: _onError
               * _Private_ function to handle websockets errors.
               *
               * Parameters:
               * (Object) error - The websocket error.
               */


              _onError(error) {
                Strophe.error("Websocket error " + JSON.stringify(error));

                this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "The WebSocket connection could not be established or was disconnected.");

                this._disconnect();
              }
              /** PrivateFunction: _onIdle
               *  _Private_ function called by Strophe.Connection._onIdle
               *
               *  sends all queued stanzas
               */


              _onIdle() {
                const data = this._conn._data;

                if (data.length > 0 && !this._conn.paused) {
                  for (let i = 0; i < data.length; i++) {
                    if (data[i] !== null) {
                      let stanza;

                      if (data[i] === "restart") {
                        stanza = this._buildStream().tree();
                      } else {
                        stanza = data[i];
                      }

                      const rawStanza = Strophe.serialize(stanza);

                      this._conn.xmlOutput(stanza);

                      this._conn.rawOutput(rawStanza);

                      this.socket.send(rawStanza);
                    }
                  }

                  this._conn._data = [];
                }
              }
              /** PrivateFunction: _onMessage
               * _Private_ function to handle websockets messages.
               *
               * This function parses each of the messages as if they are full documents.
               * [TODO : We may actually want to use a SAX Push parser].
               *
               * Since all XMPP traffic starts with
               *  <stream:stream version='1.0'
               *                 xml:lang='en'
               *                 xmlns='jabber:client'
               *                 xmlns:stream='http://etherx.jabber.org/streams'
               *                 id='3697395463'
               *                 from='SERVER'>
               *
               * The first stanza will always fail to be parsed.
               *
               * Additionally, the seconds stanza will always be <stream:features> with
               * the stream NS defined in the previous stanza, so we need to 'force'
               * the inclusion of the NS in this stanza.
               *
               * Parameters:
               * (string) message - The websocket message.
               */


              _onMessage(message) {
                let elem; // check for closing stream

                const close = '<close xmlns="urn:ietf:params:xml:ns:xmpp-framing" />';

                if (message.data === close) {
                  this._conn.rawInput(close);

                  this._conn.xmlInput(message);

                  if (!this._conn.disconnecting) {
                    this._conn._doDisconnect();
                  }

                  return;
                } else if (message.data.search("<open ") === 0) {
                  // This handles stream restarts
                  elem = new DOMParser().parseFromString(message.data, "text/xml").documentElement;

                  if (!this._handleStreamStart(elem)) {
                    return;
                  }
                } else {
                  const data = this._streamWrap(message.data);

                  elem = new DOMParser().parseFromString(data, "text/xml").documentElement;
                }

                if (this._checkStreamError(elem, Strophe.Status.ERROR)) {
                  return;
                } //handle unavailable presence stanza before disconnecting


                if (this._conn.disconnecting && elem.firstChild.nodeName === "presence" && elem.firstChild.getAttribute("type") === "unavailable") {
                  this._conn.xmlInput(elem);

                  this._conn.rawInput(Strophe.serialize(elem)); // if we are already disconnecting we will ignore the unavailable stanza and
                  // wait for the </stream:stream> tag before we close the connection


                  return;
                }

                this._conn._dataRecv(elem, message.data);
              }
              /** PrivateFunction: _onOpen
               * _Private_ function to handle websockets connection setup.
               *
               * The opening stream tag is sent here.
               */


              _onOpen() {
                Strophe.debug("Websocket open");

                const start = this._buildStream();

                this._conn.xmlOutput(start.tree());

                const startString = Strophe.serialize(start);

                this._conn.rawOutput(startString);

                this.socket.send(startString);
              }
              /** PrivateFunction: _reqToData
               * _Private_ function to get a stanza out of a request.
               *
               * WebSockets don't use requests, so the passed argument is just returned.
               *
               *  Parameters:
               *    (Object) stanza - The stanza.
               *
               *  Returns:
               *    The stanza that was passed.
               */


              _reqToData(stanza) {
                // eslint-disable-line class-methods-use-this
                return stanza;
              }
              /** PrivateFunction: _send
               *  _Private_ part of the Connection.send function for WebSocket
               *
               * Just flushes the messages that are in the queue
               */


              _send() {
                this._conn.flush();
              }
              /** PrivateFunction: _sendRestart
               *
               *  Send an xmpp:restart stanza.
               */


              _sendRestart() {
                clearTimeout(this._conn._idleTimeout);

                this._conn._onIdle.bind(this._conn)();
              }

            };

            /*
                This program is distributed under the terms of the MIT license.
                Please see the LICENSE file for details.

                Copyright 2020, JC Brand
            */
            const lmap = {};
            lmap['debug'] = Strophe.LogLevel.DEBUG;
            lmap['info'] = Strophe.LogLevel.INFO;
            lmap['warn'] = Strophe.LogLevel.WARN;
            lmap['error'] = Strophe.LogLevel.ERROR;
            lmap['fatal'] = Strophe.LogLevel.FATAL;
            /** Class: Strophe.WorkerWebsocket
             *  _Private_ helper class that handles a websocket connection inside a shared worker.
             */

            Strophe.WorkerWebsocket = class WorkerWebsocket extends Strophe.Websocket {
              /** PrivateConstructor: Strophe.WorkerWebsocket
               *  Create and initialize a Strophe.WorkerWebsocket object.
               *
               *  Parameters:
               *    (Strophe.Connection) connection - The Strophe.Connection
               *
               *  Returns:
               *    A new Strophe.WorkerWebsocket object.
               */
              constructor(connection) {
                super(connection);
                this._conn = connection;
                this.worker = new SharedWorker(this._conn.options.worker, 'Strophe XMPP Connection');

                this.worker.onerror = e => {
                  var _console;

                  (_console = console) === null || _console === void 0 ? void 0 : _console.error(e);
                  Strophe.log(Strophe.LogLevel.ERROR, `Shared Worker Error: ${e}`);
                };
              }

              get socket() {
                return {
                  'send': str => this.worker.port.postMessage(['send', str])
                };
              }

              _connect() {
                this._messageHandler = m => this._onInitialMessage(m);

                this.worker.port.start();

                this.worker.port.onmessage = ev => this._onWorkerMessage(ev);

                this.worker.port.postMessage(['_connect', this._conn.service, this._conn.jid]);
              }

              _attach(callback) {
                this._messageHandler = m => this._onMessage(m);

                this._conn.connect_callback = callback;
                this.worker.port.start();

                this.worker.port.onmessage = ev => this._onWorkerMessage(ev);

                this.worker.port.postMessage(['_attach', this._conn.service]);
              }

              _attachCallback(status, jid) {
                if (status === Strophe.Status.ATTACHED) {
                  this._conn.jid = jid;
                  this._conn.authenticated = true;
                  this._conn.connected = true;
                  this._conn.restored = true;

                  this._conn._changeConnectStatus(Strophe.Status.ATTACHED);
                } else if (status === Strophe.Status.ATTACHFAIL) {
                  this._conn.authenticated = false;
                  this._conn.connected = false;
                  this._conn.restored = false;

                  this._conn._changeConnectStatus(Strophe.Status.ATTACHFAIL);
                }
              }

              _disconnect(readyState, pres) {
                pres && this._conn.send(pres);
                const close = $build("close", {
                  "xmlns": Strophe.NS.FRAMING
                });

                this._conn.xmlOutput(close.tree());

                const closeString = Strophe.serialize(close);

                this._conn.rawOutput(closeString);

                this.worker.port.postMessage(['send', closeString]);

                this._conn._doDisconnect();
              }

              _onClose(e) {
                if (this._conn.connected && !this._conn.disconnecting) {
                  Strophe.error("Websocket closed unexpectedly");

                  this._conn._doDisconnect();
                } else if (e && e.code === 1006 && !this._conn.connected) {
                  // in case the onError callback was not called (Safari 10 does not
                  // call onerror when the initial connection fails) we need to
                  // dispatch a CONNFAIL status update to be consistent with the
                  // behavior on other browsers.
                  Strophe.error("Websocket closed unexcectedly");

                  this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "The WebSocket connection could not be established or was disconnected.");

                  this._conn._doDisconnect();
                } else {
                  Strophe.debug("Websocket closed");
                }
              }

              _closeSocket() {
                this.worker.port.postMessage(['_closeSocket']);
              }
              /** PrivateFunction: _replaceMessageHandler
               *
               * Called by _onInitialMessage in order to replace itself with the general message handler.
               * This method is overridden by Strophe.WorkerWebsocket, which manages a
               * websocket connection via a service worker and doesn't have direct access
               * to the socket.
               */


              _replaceMessageHandler() {
                this._messageHandler = m => this._onMessage(m);
              }
              /** PrivateFunction: _onWorkerMessage
               * _Private_ function that handles messages received from the service worker
               */


              _onWorkerMessage(ev) {
                const {
                  data
                } = ev;
                const method_name = data[0];

                if (method_name === '_onMessage') {
                  this._messageHandler(data[1]);
                } else if (method_name in this) {
                  try {
                    this[method_name].apply(this, ev.data.slice(1));
                  } catch (e) {
                    Strophe.log(Strophe.LogLevel.ERROR, e);
                  }
                } else if (method_name === 'log') {
                  const level = data[1];
                  const msg = data[2];
                  Strophe.log(lmap[level], msg);
                } else {
                  Strophe.log(Strophe.LogLevel.ERROR, `Found unhandled service worker message: ${data}`);
                }
              }

            };

            global$1.$build = core.$build;
            global$1.$iq = core.$iq;
            global$1.$msg = core.$msg;
            global$1.$pres = core.$pres;
            global$1.Strophe = core.Strophe;
            const {
              b64_sha1
            } = SHA1;

            exports.$build = $build;
            exports.$iq = $iq;
            exports.$msg = $msg;
            exports.$pres = $pres;
            exports.Strophe = Strophe;
            exports.b64_sha1 = b64_sha1;

            Object.defineProperty(exports, '__esModule', { value: true });

}));

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"@xmldom/xmldom":5,"ws":209}],209:[function(require,module,exports){
'use strict';

module.exports = function () {
  throw new Error(
    'ws does not work in the browser. Browser clients must use the native ' +
      'WebSocket object'
  );
};

},{}],210:[function(require,module,exports){
(function (setImmediate,clearImmediate){(function (){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;

// DOM APIs, for completeness

exports.setTimeout = function() {
  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };

function Timeout(id, clearFn) {
  this._id = id;
  this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
  this._clearFn.call(window, this._id);
};

// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = msecs;
};

exports.unenroll = function(item) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = -1;
};

exports._unrefActive = exports.active = function(item) {
  clearTimeout(item._idleTimeoutId);

  var msecs = item._idleTimeout;
  if (msecs >= 0) {
    item._idleTimeoutId = setTimeout(function onTimeout() {
      if (item._onTimeout)
        item._onTimeout();
    }, msecs);
  }
};

// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
  var id = nextImmediateId++;
  var args = arguments.length < 2 ? false : slice.call(arguments, 1);

  immediateIds[id] = true;

  nextTick(function onNextTick() {
    if (immediateIds[id]) {
      // fn.call() is faster so we optimize for the common use-case
      // @see http://jsperf.com/call-apply-segu
      if (args) {
        fn.apply(null, args);
      } else {
        fn.call(null);
      }
      // Prevent ids from leaking
      exports.clearImmediate(id);
    }
  });

  return id;
};

exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
  delete immediateIds[id];
};
}).call(this)}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":152,"timers":210}],211:[function(require,module,exports){
var Buffer = require('buffer').Buffer

module.exports = function (buf) {
	// If the buffer is backed by a Uint8Array, a faster version will work
	if (buf instanceof Uint8Array) {
		// If the buffer isn't a subarray, return the underlying ArrayBuffer
		if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
			return buf.buffer
		} else if (typeof buf.buffer.slice === 'function') {
			// Otherwise we need to get a proper copy
			return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength)
		}
	}

	if (Buffer.isBuffer(buf)) {
		// This is the slow version that will work with any Buffer
		// implementation (even in old browsers)
		var arrayCopy = new Uint8Array(buf.length)
		var len = buf.length
		for (var i = 0; i < len; i++) {
			arrayCopy[i] = buf[i]
		}
		return arrayCopy.buffer
	} else {
		throw new Error('Argument must be a Buffer')
	}
}

},{"buffer":47}],212:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var punycode = require('punycode');
var util = require('./util');

exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;

exports.Url = Url;

function Url() {
  this.protocol = null;
  this.slashes = null;
  this.auth = null;
  this.host = null;
  this.port = null;
  this.hostname = null;
  this.hash = null;
  this.search = null;
  this.query = null;
  this.pathname = null;
  this.path = null;
  this.href = null;
}

// Reference: RFC 3986, RFC 1808, RFC 2396

// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
    portPattern = /:[0-9]*$/,

    // Special case for a simple path URL
    simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/,

    // RFC 2396: characters reserved for delimiting URLs.
    // We actually just auto-escape these.
    delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],

    // RFC 2396: characters not allowed for various reasons.
    unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),

    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.
    autoEscape = ['\''].concat(unwise),
    // Characters that are never ever allowed in a hostname.
    // Note that any invalid chars are also handled, but these
    // are the ones that are *expected* to be seen, so we fast-path
    // them.
    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
    hostEndingChars = ['/', '?', '#'],
    hostnameMaxLen = 255,
    hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,
    hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,
    // protocols that can allow "unsafe" and "unwise" chars.
    unsafeProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that never have a hostname.
    hostlessProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that always contain a // bit.
    slashedProtocol = {
      'http': true,
      'https': true,
      'ftp': true,
      'gopher': true,
      'file': true,
      'http:': true,
      'https:': true,
      'ftp:': true,
      'gopher:': true,
      'file:': true
    },
    querystring = require('querystring');

function urlParse(url, parseQueryString, slashesDenoteHost) {
  if (url && util.isObject(url) && url instanceof Url) return url;

  var u = new Url;
  u.parse(url, parseQueryString, slashesDenoteHost);
  return u;
}

Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
  if (!util.isString(url)) {
    throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
  }

  // Copy chrome, IE, opera backslash-handling behavior.
  // Back slashes before the query string get converted to forward slashes
  // See: https://code.google.com/p/chromium/issues/detail?id=25916
  var queryIndex = url.indexOf('?'),
      splitter =
          (queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#',
      uSplit = url.split(splitter),
      slashRegex = /\\/g;
  uSplit[0] = uSplit[0].replace(slashRegex, '/');
  url = uSplit.join(splitter);

  var rest = url;

  // trim before proceeding.
  // This is to support parse stuff like "  http://foo.com  \n"
  rest = rest.trim();

  if (!slashesDenoteHost && url.split('#').length === 1) {
    // Try fast path regexp
    var simplePath = simplePathPattern.exec(rest);
    if (simplePath) {
      this.path = rest;
      this.href = rest;
      this.pathname = simplePath[1];
      if (simplePath[2]) {
        this.search = simplePath[2];
        if (parseQueryString) {
          this.query = querystring.parse(this.search.substr(1));
        } else {
          this.query = this.search.substr(1);
        }
      } else if (parseQueryString) {
        this.search = '';
        this.query = {};
      }
      return this;
    }
  }

  var proto = protocolPattern.exec(rest);
  if (proto) {
    proto = proto[0];
    var lowerProto = proto.toLowerCase();
    this.protocol = lowerProto;
    rest = rest.substr(proto.length);
  }

  // figure out if it's got a host
  // user@server is *always* interpreted as a hostname, and url
  // resolution will treat //foo/bar as host=foo,path=bar because that's
  // how the browser resolves relative URLs.
  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
    var slashes = rest.substr(0, 2) === '//';
    if (slashes && !(proto && hostlessProtocol[proto])) {
      rest = rest.substr(2);
      this.slashes = true;
    }
  }

  if (!hostlessProtocol[proto] &&
      (slashes || (proto && !slashedProtocol[proto]))) {

    // there's a hostname.
    // the first instance of /, ?, ;, or # ends the host.
    //
    // If there is an @ in the hostname, then non-host chars *are* allowed
    // to the left of the last @ sign, unless some host-ending character
    // comes *before* the @-sign.
    // URLs are obnoxious.
    //
    // ex:
    // http://a@b@c/ => user:a@b host:c
    // http://a@b?@c => user:a host:c path:/?@c

    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
    // Review our test case against browsers more comprehensively.

    // find the first instance of any hostEndingChars
    var hostEnd = -1;
    for (var i = 0; i < hostEndingChars.length; i++) {
      var hec = rest.indexOf(hostEndingChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }

    // at this point, either we have an explicit point where the
    // auth portion cannot go past, or the last @ char is the decider.
    var auth, atSign;
    if (hostEnd === -1) {
      // atSign can be anywhere.
      atSign = rest.lastIndexOf('@');
    } else {
      // atSign must be in auth portion.
      // http://a@b/c@d => host:b auth:a path:/c@d
      atSign = rest.lastIndexOf('@', hostEnd);
    }

    // Now we have a portion which is definitely the auth.
    // Pull that off.
    if (atSign !== -1) {
      auth = rest.slice(0, atSign);
      rest = rest.slice(atSign + 1);
      this.auth = decodeURIComponent(auth);
    }

    // the host is the remaining to the left of the first non-host char
    hostEnd = -1;
    for (var i = 0; i < nonHostChars.length; i++) {
      var hec = rest.indexOf(nonHostChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }
    // if we still have not hit it, then the entire thing is a host.
    if (hostEnd === -1)
      hostEnd = rest.length;

    this.host = rest.slice(0, hostEnd);
    rest = rest.slice(hostEnd);

    // pull out port.
    this.parseHost();

    // we've indicated that there is a hostname,
    // so even if it's empty, it has to be present.
    this.hostname = this.hostname || '';

    // if hostname begins with [ and ends with ]
    // assume that it's an IPv6 address.
    var ipv6Hostname = this.hostname[0] === '[' &&
        this.hostname[this.hostname.length - 1] === ']';

    // validate a little.
    if (!ipv6Hostname) {
      var hostparts = this.hostname.split(/\./);
      for (var i = 0, l = hostparts.length; i < l; i++) {
        var part = hostparts[i];
        if (!part) continue;
        if (!part.match(hostnamePartPattern)) {
          var newpart = '';
          for (var j = 0, k = part.length; j < k; j++) {
            if (part.charCodeAt(j) > 127) {
              // we replace non-ASCII char with a temporary placeholder
              // we need this to make sure size of hostname is not
              // broken by replacing non-ASCII by nothing
              newpart += 'x';
            } else {
              newpart += part[j];
            }
          }
          // we test again with ASCII char only
          if (!newpart.match(hostnamePartPattern)) {
            var validParts = hostparts.slice(0, i);
            var notHost = hostparts.slice(i + 1);
            var bit = part.match(hostnamePartStart);
            if (bit) {
              validParts.push(bit[1]);
              notHost.unshift(bit[2]);
            }
            if (notHost.length) {
              rest = '/' + notHost.join('.') + rest;
            }
            this.hostname = validParts.join('.');
            break;
          }
        }
      }
    }

    if (this.hostname.length > hostnameMaxLen) {
      this.hostname = '';
    } else {
      // hostnames are always lower case.
      this.hostname = this.hostname.toLowerCase();
    }

    if (!ipv6Hostname) {
      // IDNA Support: Returns a punycoded representation of "domain".
      // It only converts parts of the domain name that
      // have non-ASCII characters, i.e. it doesn't matter if
      // you call it with a domain that already is ASCII-only.
      this.hostname = punycode.toASCII(this.hostname);
    }

    var p = this.port ? ':' + this.port : '';
    var h = this.hostname || '';
    this.host = h + p;
    this.href += this.host;

    // strip [ and ] from the hostname
    // the host field still retains them, though
    if (ipv6Hostname) {
      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
      if (rest[0] !== '/') {
        rest = '/' + rest;
      }
    }
  }

  // now rest is set to the post-host stuff.
  // chop off any delim chars.
  if (!unsafeProtocol[lowerProto]) {

    // First, make 100% sure that any "autoEscape" chars get
    // escaped, even if encodeURIComponent doesn't think they
    // need to be.
    for (var i = 0, l = autoEscape.length; i < l; i++) {
      var ae = autoEscape[i];
      if (rest.indexOf(ae) === -1)
        continue;
      var esc = encodeURIComponent(ae);
      if (esc === ae) {
        esc = escape(ae);
      }
      rest = rest.split(ae).join(esc);
    }
  }


  // chop off from the tail first.
  var hash = rest.indexOf('#');
  if (hash !== -1) {
    // got a fragment string.
    this.hash = rest.substr(hash);
    rest = rest.slice(0, hash);
  }
  var qm = rest.indexOf('?');
  if (qm !== -1) {
    this.search = rest.substr(qm);
    this.query = rest.substr(qm + 1);
    if (parseQueryString) {
      this.query = querystring.parse(this.query);
    }
    rest = rest.slice(0, qm);
  } else if (parseQueryString) {
    // no query string, but parseQueryString still requested
    this.search = '';
    this.query = {};
  }
  if (rest) this.pathname = rest;
  if (slashedProtocol[lowerProto] &&
      this.hostname && !this.pathname) {
    this.pathname = '/';
  }

  //to support http.request
  if (this.pathname || this.search) {
    var p = this.pathname || '';
    var s = this.search || '';
    this.path = p + s;
  }

  // finally, reconstruct the href based on what has been validated.
  this.href = this.format();
  return this;
};

// format a parsed object into a url string
function urlFormat(obj) {
  // ensure it's an object, and not a string url.
  // If it's an obj, this is a no-op.
  // this way, you can call url_format() on strings
  // to clean up potentially wonky urls.
  if (util.isString(obj)) obj = urlParse(obj);
  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
  return obj.format();
}

Url.prototype.format = function() {
  var auth = this.auth || '';
  if (auth) {
    auth = encodeURIComponent(auth);
    auth = auth.replace(/%3A/i, ':');
    auth += '@';
  }

  var protocol = this.protocol || '',
      pathname = this.pathname || '',
      hash = this.hash || '',
      host = false,
      query = '';

  if (this.host) {
    host = auth + this.host;
  } else if (this.hostname) {
    host = auth + (this.hostname.indexOf(':') === -1 ?
        this.hostname :
        '[' + this.hostname + ']');
    if (this.port) {
      host += ':' + this.port;
    }
  }

  if (this.query &&
      util.isObject(this.query) &&
      Object.keys(this.query).length) {
    query = querystring.stringify(this.query);
  }

  var search = this.search || (query && ('?' + query)) || '';

  if (protocol && protocol.substr(-1) !== ':') protocol += ':';

  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.
  // unless they had them to begin with.
  if (this.slashes ||
      (!protocol || slashedProtocol[protocol]) && host !== false) {
    host = '//' + (host || '');
    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
  } else if (!host) {
    host = '';
  }

  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
  if (search && search.charAt(0) !== '?') search = '?' + search;

  pathname = pathname.replace(/[?#]/g, function(match) {
    return encodeURIComponent(match);
  });
  search = search.replace('#', '%23');

  return protocol + host + pathname + search + hash;
};

function urlResolve(source, relative) {
  return urlParse(source, false, true).resolve(relative);
}

Url.prototype.resolve = function(relative) {
  return this.resolveObject(urlParse(relative, false, true)).format();
};

function urlResolveObject(source, relative) {
  if (!source) return relative;
  return urlParse(source, false, true).resolveObject(relative);
}

Url.prototype.resolveObject = function(relative) {
  if (util.isString(relative)) {
    var rel = new Url();
    rel.parse(relative, false, true);
    relative = rel;
  }

  var result = new Url();
  var tkeys = Object.keys(this);
  for (var tk = 0; tk < tkeys.length; tk++) {
    var tkey = tkeys[tk];
    result[tkey] = this[tkey];
  }

  // hash is always overridden, no matter what.
  // even href="" will remove it.
  result.hash = relative.hash;

  // if the relative url is empty, then there's nothing left to do here.
  if (relative.href === '') {
    result.href = result.format();
    return result;
  }

  // hrefs like //foo/bar always cut to the protocol.
  if (relative.slashes && !relative.protocol) {
    // take everything except the protocol from relative
    var rkeys = Object.keys(relative);
    for (var rk = 0; rk < rkeys.length; rk++) {
      var rkey = rkeys[rk];
      if (rkey !== 'protocol')
        result[rkey] = relative[rkey];
    }

    //urlParse appends trailing / to urls like http://www.example.com
    if (slashedProtocol[result.protocol] &&
        result.hostname && !result.pathname) {
      result.path = result.pathname = '/';
    }

    result.href = result.format();
    return result;
  }

  if (relative.protocol && relative.protocol !== result.protocol) {
    // if it's a known url protocol, then changing
    // the protocol does weird things
    // first, if it's not file:, then we MUST have a host,
    // and if there was a path
    // to begin with, then we MUST have a path.
    // if it is file:, then the host is dropped,
    // because that's known to be hostless.
    // anything else is assumed to be absolute.
    if (!slashedProtocol[relative.protocol]) {
      var keys = Object.keys(relative);
      for (var v = 0; v < keys.length; v++) {
        var k = keys[v];
        result[k] = relative[k];
      }
      result.href = result.format();
      return result;
    }

    result.protocol = relative.protocol;
    if (!relative.host && !hostlessProtocol[relative.protocol]) {
      var relPath = (relative.pathname || '').split('/');
      while (relPath.length && !(relative.host = relPath.shift()));
      if (!relative.host) relative.host = '';
      if (!relative.hostname) relative.hostname = '';
      if (relPath[0] !== '') relPath.unshift('');
      if (relPath.length < 2) relPath.unshift('');
      result.pathname = relPath.join('/');
    } else {
      result.pathname = relative.pathname;
    }
    result.search = relative.search;
    result.query = relative.query;
    result.host = relative.host || '';
    result.auth = relative.auth;
    result.hostname = relative.hostname || relative.host;
    result.port = relative.port;
    // to support http.request
    if (result.pathname || result.search) {
      var p = result.pathname || '';
      var s = result.search || '';
      result.path = p + s;
    }
    result.slashes = result.slashes || relative.slashes;
    result.href = result.format();
    return result;
  }

  var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
      isRelAbs = (
          relative.host ||
          relative.pathname && relative.pathname.charAt(0) === '/'
      ),
      mustEndAbs = (isRelAbs || isSourceAbs ||
                    (result.host && relative.pathname)),
      removeAllDots = mustEndAbs,
      srcPath = result.pathname && result.pathname.split('/') || [],
      relPath = relative.pathname && relative.pathname.split('/') || [],
      psychotic = result.protocol && !slashedProtocol[result.protocol];

  // if the url is a non-slashed url, then relative
  // links like ../.. should be able
  // to crawl up to the hostname, as well.  This is strange.
  // result.protocol has already been set by now.
  // Later on, put the first path part into the host field.
  if (psychotic) {
    result.hostname = '';
    result.port = null;
    if (result.host) {
      if (srcPath[0] === '') srcPath[0] = result.host;
      else srcPath.unshift(result.host);
    }
    result.host = '';
    if (relative.protocol) {
      relative.hostname = null;
      relative.port = null;
      if (relative.host) {
        if (relPath[0] === '') relPath[0] = relative.host;
        else relPath.unshift(relative.host);
      }
      relative.host = null;
    }
    mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
  }

  if (isRelAbs) {
    // it's absolute.
    result.host = (relative.host || relative.host === '') ?
                  relative.host : result.host;
    result.hostname = (relative.hostname || relative.hostname === '') ?
                      relative.hostname : result.hostname;
    result.search = relative.search;
    result.query = relative.query;
    srcPath = relPath;
    // fall through to the dot-handling below.
  } else if (relPath.length) {
    // it's relative
    // throw away the existing file, and take the new path instead.
    if (!srcPath) srcPath = [];
    srcPath.pop();
    srcPath = srcPath.concat(relPath);
    result.search = relative.search;
    result.query = relative.query;
  } else if (!util.isNullOrUndefined(relative.search)) {
    // just pull out the search.
    // like href='?foo'.
    // Put this after the other two cases because it simplifies the booleans
    if (psychotic) {
      result.hostname = result.host = srcPath.shift();
      //occationaly the auth can get stuck only in host
      //this especially happens in cases like
      //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
      var authInHost = result.host && result.host.indexOf('@') > 0 ?
                       result.host.split('@') : false;
      if (authInHost) {
        result.auth = authInHost.shift();
        result.host = result.hostname = authInHost.shift();
      }
    }
    result.search = relative.search;
    result.query = relative.query;
    //to support http.request
    if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
      result.path = (result.pathname ? result.pathname : '') +
                    (result.search ? result.search : '');
    }
    result.href = result.format();
    return result;
  }

  if (!srcPath.length) {
    // no path at all.  easy.
    // we've already handled the other stuff above.
    result.pathname = null;
    //to support http.request
    if (result.search) {
      result.path = '/' + result.search;
    } else {
      result.path = null;
    }
    result.href = result.format();
    return result;
  }

  // if a url ENDs in . or .., then it must get a trailing slash.
  // however, if it ends in anything else non-slashy,
  // then it must NOT get a trailing slash.
  var last = srcPath.slice(-1)[0];
  var hasTrailingSlash = (
      (result.host || relative.host || srcPath.length > 1) &&
      (last === '.' || last === '..') || last === '');

  // strip single dots, resolve double dots to parent dir
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = srcPath.length; i >= 0; i--) {
    last = srcPath[i];
    if (last === '.') {
      srcPath.splice(i, 1);
    } else if (last === '..') {
      srcPath.splice(i, 1);
      up++;
    } else if (up) {
      srcPath.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (!mustEndAbs && !removeAllDots) {
    for (; up--; up) {
      srcPath.unshift('..');
    }
  }

  if (mustEndAbs && srcPath[0] !== '' &&
      (!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
    srcPath.unshift('');
  }

  if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
    srcPath.push('');
  }

  var isAbsolute = srcPath[0] === '' ||
      (srcPath[0] && srcPath[0].charAt(0) === '/');

  // put the host back
  if (psychotic) {
    result.hostname = result.host = isAbsolute ? '' :
                                    srcPath.length ? srcPath.shift() : '';
    //occationaly the auth can get stuck only in host
    //this especially happens in cases like
    //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
    var authInHost = result.host && result.host.indexOf('@') > 0 ?
                     result.host.split('@') : false;
    if (authInHost) {
      result.auth = authInHost.shift();
      result.host = result.hostname = authInHost.shift();
    }
  }

  mustEndAbs = mustEndAbs || (result.host && srcPath.length);

  if (mustEndAbs && !isAbsolute) {
    srcPath.unshift('');
  }

  if (!srcPath.length) {
    result.pathname = null;
    result.path = null;
  } else {
    result.pathname = srcPath.join('/');
  }

  //to support request.http
  if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
    result.path = (result.pathname ? result.pathname : '') +
                  (result.search ? result.search : '');
  }
  result.auth = relative.auth || result.auth;
  result.slashes = result.slashes || relative.slashes;
  result.href = result.format();
  return result;
};

Url.prototype.parseHost = function() {
  var host = this.host;
  var port = portPattern.exec(host);
  if (port) {
    port = port[0];
    if (port !== ':') {
      this.port = port.substr(1);
    }
    host = host.substr(0, host.length - port.length);
  }
  if (host) this.hostname = host;
};

},{"./util":213,"punycode":33,"querystring":155}],213:[function(require,module,exports){
'use strict';

module.exports = {
  isString: function(arg) {
    return typeof(arg) === 'string';
  },
  isObject: function(arg) {
    return typeof(arg) === 'object' && arg !== null;
  },
  isNull: function(arg) {
    return arg === null;
  },
  isNullOrUndefined: function(arg) {
    return arg == null;
  }
};

},{}],214:[function(require,module,exports){
(function (global){(function (){

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],215:[function(require,module,exports){
arguments[4][18][0].apply(exports,arguments)
},{"dup":18}],216:[function(require,module,exports){
arguments[4][19][0].apply(exports,arguments)
},{"dup":19}],217:[function(require,module,exports){
arguments[4][20][0].apply(exports,arguments)
},{"./support/isBuffer":216,"_process":152,"dup":20,"inherits":215}],218:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _adapter_factory = require('./adapter_factory.js');

var adapter = (0, _adapter_factory.adapterFactory)({ window: typeof window === 'undefined' ? undefined : window });
exports.default = adapter;

},{"./adapter_factory.js":219}],219:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.adapterFactory = adapterFactory;

var _utils = require('./utils');

var utils = _interopRequireWildcard(_utils);

var _chrome_shim = require('./chrome/chrome_shim');

var chromeShim = _interopRequireWildcard(_chrome_shim);

var _edge_shim = require('./edge/edge_shim');

var edgeShim = _interopRequireWildcard(_edge_shim);

var _firefox_shim = require('./firefox/firefox_shim');

var firefoxShim = _interopRequireWildcard(_firefox_shim);

var _safari_shim = require('./safari/safari_shim');

var safariShim = _interopRequireWildcard(_safari_shim);

var _common_shim = require('./common_shim');

var commonShim = _interopRequireWildcard(_common_shim);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

// Shimming starts here.
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
function adapterFactory() {
  var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
      window = _ref.window;

  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
    shimChrome: true,
    shimFirefox: true,
    shimEdge: true,
    shimSafari: true
  };

  // Utils.
  var logging = utils.log;
  var browserDetails = utils.detectBrowser(window);

  var adapter = {
    browserDetails: browserDetails,
    commonShim: commonShim,
    extractVersion: utils.extractVersion,
    disableLog: utils.disableLog,
    disableWarnings: utils.disableWarnings
  };

  // Shim browser if found.
  switch (browserDetails.browser) {
    case 'chrome':
      if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) {
        logging('Chrome shim is not included in this adapter release.');
        return adapter;
      }
      if (browserDetails.version === null) {
        logging('Chrome shim can not determine version, not shimming.');
        return adapter;
      }
      logging('adapter.js shimming chrome.');
      // Export to the adapter global object visible in the browser.
      adapter.browserShim = chromeShim;

      // Must be called before shimPeerConnection.
      commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);

      chromeShim.shimGetUserMedia(window, browserDetails);
      chromeShim.shimMediaStream(window, browserDetails);
      chromeShim.shimPeerConnection(window, browserDetails);
      chromeShim.shimOnTrack(window, browserDetails);
      chromeShim.shimAddTrackRemoveTrack(window, browserDetails);
      chromeShim.shimGetSendersWithDtmf(window, browserDetails);
      chromeShim.shimGetStats(window, browserDetails);
      chromeShim.shimSenderReceiverGetStats(window, browserDetails);
      chromeShim.fixNegotiationNeeded(window, browserDetails);

      commonShim.shimRTCIceCandidate(window, browserDetails);
      commonShim.shimConnectionState(window, browserDetails);
      commonShim.shimMaxMessageSize(window, browserDetails);
      commonShim.shimSendThrowTypeError(window, browserDetails);
      commonShim.removeExtmapAllowMixed(window, browserDetails);
      break;
    case 'firefox':
      if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) {
        logging('Firefox shim is not included in this adapter release.');
        return adapter;
      }
      logging('adapter.js shimming firefox.');
      // Export to the adapter global object visible in the browser.
      adapter.browserShim = firefoxShim;

      // Must be called before shimPeerConnection.
      commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);

      firefoxShim.shimGetUserMedia(window, browserDetails);
      firefoxShim.shimPeerConnection(window, browserDetails);
      firefoxShim.shimOnTrack(window, browserDetails);
      firefoxShim.shimRemoveStream(window, browserDetails);
      firefoxShim.shimSenderGetStats(window, browserDetails);
      firefoxShim.shimReceiverGetStats(window, browserDetails);
      firefoxShim.shimRTCDataChannel(window, browserDetails);
      firefoxShim.shimAddTransceiver(window, browserDetails);
      firefoxShim.shimGetParameters(window, browserDetails);
      firefoxShim.shimCreateOffer(window, browserDetails);
      firefoxShim.shimCreateAnswer(window, browserDetails);

      commonShim.shimRTCIceCandidate(window, browserDetails);
      commonShim.shimConnectionState(window, browserDetails);
      commonShim.shimMaxMessageSize(window, browserDetails);
      commonShim.shimSendThrowTypeError(window, browserDetails);
      break;
    case 'edge':
      if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {
        logging('MS edge shim is not included in this adapter release.');
        return adapter;
      }
      logging('adapter.js shimming edge.');
      // Export to the adapter global object visible in the browser.
      adapter.browserShim = edgeShim;

      edgeShim.shimGetUserMedia(window, browserDetails);
      edgeShim.shimGetDisplayMedia(window, browserDetails);
      edgeShim.shimPeerConnection(window, browserDetails);
      edgeShim.shimReplaceTrack(window, browserDetails);

      // the edge shim implements the full RTCIceCandidate object.

      commonShim.shimMaxMessageSize(window, browserDetails);
      commonShim.shimSendThrowTypeError(window, browserDetails);
      break;
    case 'safari':
      if (!safariShim || !options.shimSafari) {
        logging('Safari shim is not included in this adapter release.');
        return adapter;
      }
      logging('adapter.js shimming safari.');
      // Export to the adapter global object visible in the browser.
      adapter.browserShim = safariShim;

      // Must be called before shimCallbackAPI.
      commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);

      safariShim.shimRTCIceServerUrls(window, browserDetails);
      safariShim.shimCreateOfferLegacy(window, browserDetails);
      safariShim.shimCallbacksAPI(window, browserDetails);
      safariShim.shimLocalStreamsAPI(window, browserDetails);
      safariShim.shimRemoteStreamsAPI(window, browserDetails);
      safariShim.shimTrackEventTransceiver(window, browserDetails);
      safariShim.shimGetUserMedia(window, browserDetails);
      safariShim.shimAudioContext(window, browserDetails);

      commonShim.shimRTCIceCandidate(window, browserDetails);
      commonShim.shimMaxMessageSize(window, browserDetails);
      commonShim.shimSendThrowTypeError(window, browserDetails);
      commonShim.removeExtmapAllowMixed(window, browserDetails);
      break;
    default:
      logging('Unsupported browser!');
      break;
  }

  return adapter;
}

// Browser shims.

},{"./chrome/chrome_shim":220,"./common_shim":223,"./edge/edge_shim":224,"./firefox/firefox_shim":228,"./safari/safari_shim":231,"./utils":232}],220:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _getusermedia = require('./getusermedia');

Object.defineProperty(exports, 'shimGetUserMedia', {
  enumerable: true,
  get: function get() {
    return _getusermedia.shimGetUserMedia;
  }
});

var _getdisplaymedia = require('./getdisplaymedia');

Object.defineProperty(exports, 'shimGetDisplayMedia', {
  enumerable: true,
  get: function get() {
    return _getdisplaymedia.shimGetDisplayMedia;
  }
});
exports.shimMediaStream = shimMediaStream;
exports.shimOnTrack = shimOnTrack;
exports.shimGetSendersWithDtmf = shimGetSendersWithDtmf;
exports.shimGetStats = shimGetStats;
exports.shimSenderReceiverGetStats = shimSenderReceiverGetStats;
exports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative;
exports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack;
exports.shimPeerConnection = shimPeerConnection;
exports.fixNegotiationNeeded = fixNegotiationNeeded;

var _utils = require('../utils.js');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function shimMediaStream(window) {
  window.MediaStream = window.MediaStream || window.webkitMediaStream;
}

function shimOnTrack(window) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) {
    Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
      get: function get() {
        return this._ontrack;
      },
      set: function set(f) {
        if (this._ontrack) {
          this.removeEventListener('track', this._ontrack);
        }
        this.addEventListener('track', this._ontrack = f);
      },

      enumerable: true,
      configurable: true
    });
    var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
    window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
      var _this = this;

      if (!this._ontrackpoly) {
        this._ontrackpoly = function (e) {
          // onaddstream does not fire when a track is added to an existing
          // stream. But stream.onaddtrack is implemented so we use that.
          e.stream.addEventListener('addtrack', function (te) {
            var receiver = void 0;
            if (window.RTCPeerConnection.prototype.getReceivers) {
              receiver = _this.getReceivers().find(function (r) {
                return r.track && r.track.id === te.track.id;
              });
            } else {
              receiver = { track: te.track };
            }

            var event = new Event('track');
            event.track = te.track;
            event.receiver = receiver;
            event.transceiver = { receiver: receiver };
            event.streams = [e.stream];
            _this.dispatchEvent(event);
          });
          e.stream.getTracks().forEach(function (track) {
            var receiver = void 0;
            if (window.RTCPeerConnection.prototype.getReceivers) {
              receiver = _this.getReceivers().find(function (r) {
                return r.track && r.track.id === track.id;
              });
            } else {
              receiver = { track: track };
            }
            var event = new Event('track');
            event.track = track;
            event.receiver = receiver;
            event.transceiver = { receiver: receiver };
            event.streams = [e.stream];
            _this.dispatchEvent(event);
          });
        };
        this.addEventListener('addstream', this._ontrackpoly);
      }
      return origSetRemoteDescription.apply(this, arguments);
    };
  } else {
    // even if RTCRtpTransceiver is in window, it is only used and
    // emitted in unified-plan. Unfortunately this means we need
    // to unconditionally wrap the event.
    utils.wrapPeerConnectionEvent(window, 'track', function (e) {
      if (!e.transceiver) {
        Object.defineProperty(e, 'transceiver', { value: { receiver: e.receiver } });
      }
      return e;
    });
  }
}

function shimGetSendersWithDtmf(window) {
  // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) {
    var shimSenderWithDtmf = function shimSenderWithDtmf(pc, track) {
      return {
        track: track,
        get dtmf() {
          if (this._dtmf === undefined) {
            if (track.kind === 'audio') {
              this._dtmf = pc.createDTMFSender(track);
            } else {
              this._dtmf = null;
            }
          }
          return this._dtmf;
        },
        _pc: pc
      };
    };

    // augment addTrack when getSenders is not available.
    if (!window.RTCPeerConnection.prototype.getSenders) {
      window.RTCPeerConnection.prototype.getSenders = function getSenders() {
        this._senders = this._senders || [];
        return this._senders.slice(); // return a copy of the internal state.
      };
      var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
      window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
        var sender = origAddTrack.apply(this, arguments);
        if (!sender) {
          sender = shimSenderWithDtmf(this, track);
          this._senders.push(sender);
        }
        return sender;
      };

      var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
      window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
        origRemoveTrack.apply(this, arguments);
        var idx = this._senders.indexOf(sender);
        if (idx !== -1) {
          this._senders.splice(idx, 1);
        }
      };
    }
    var origAddStream = window.RTCPeerConnection.prototype.addStream;
    window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
      var _this2 = this;

      this._senders = this._senders || [];
      origAddStream.apply(this, [stream]);
      stream.getTracks().forEach(function (track) {
        _this2._senders.push(shimSenderWithDtmf(_this2, track));
      });
    };

    var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
    window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
      var _this3 = this;

      this._senders = this._senders || [];
      origRemoveStream.apply(this, [stream]);

      stream.getTracks().forEach(function (track) {
        var sender = _this3._senders.find(function (s) {
          return s.track === track;
        });
        if (sender) {
          // remove sender
          _this3._senders.splice(_this3._senders.indexOf(sender), 1);
        }
      });
    };
  } else if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
    var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
    window.RTCPeerConnection.prototype.getSenders = function getSenders() {
      var _this4 = this;

      var senders = origGetSenders.apply(this, []);
      senders.forEach(function (sender) {
        return sender._pc = _this4;
      });
      return senders;
    };

    Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
      get: function get() {
        if (this._dtmf === undefined) {
          if (this.track.kind === 'audio') {
            this._dtmf = this._pc.createDTMFSender(this.track);
          } else {
            this._dtmf = null;
          }
        }
        return this._dtmf;
      }
    });
  }
}

function shimGetStats(window) {
  if (!window.RTCPeerConnection) {
    return;
  }

  var origGetStats = window.RTCPeerConnection.prototype.getStats;
  window.RTCPeerConnection.prototype.getStats = function getStats() {
    var _this5 = this;

    var _arguments = Array.prototype.slice.call(arguments),
        selector = _arguments[0],
        onSucc = _arguments[1],
        onErr = _arguments[2];

    // If selector is a function then we are in the old style stats so just
    // pass back the original getStats format to avoid breaking old users.


    if (arguments.length > 0 && typeof selector === 'function') {
      return origGetStats.apply(this, arguments);
    }

    // When spec-style getStats is supported, return those when called with
    // either no arguments or the selector argument is null.
    if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) {
      return origGetStats.apply(this, []);
    }

    var fixChromeStats_ = function fixChromeStats_(response) {
      var standardReport = {};
      var reports = response.result();
      reports.forEach(function (report) {
        var standardStats = {
          id: report.id,
          timestamp: report.timestamp,
          type: {
            localcandidate: 'local-candidate',
            remotecandidate: 'remote-candidate'
          }[report.type] || report.type
        };
        report.names().forEach(function (name) {
          standardStats[name] = report.stat(name);
        });
        standardReport[standardStats.id] = standardStats;
      });

      return standardReport;
    };

    // shim getStats with maplike support
    var makeMapStats = function makeMapStats(stats) {
      return new Map(Object.keys(stats).map(function (key) {
        return [key, stats[key]];
      }));
    };

    if (arguments.length >= 2) {
      var successCallbackWrapper_ = function successCallbackWrapper_(response) {
        onSucc(makeMapStats(fixChromeStats_(response)));
      };

      return origGetStats.apply(this, [successCallbackWrapper_, selector]);
    }

    // promise-support
    return new Promise(function (resolve, reject) {
      origGetStats.apply(_this5, [function (response) {
        resolve(makeMapStats(fixChromeStats_(response)));
      }, reject]);
    }).then(onSucc, onErr);
  };
}

function shimSenderReceiverGetStats(window) {
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) {
    return;
  }

  // shim sender stats.
  if (!('getStats' in window.RTCRtpSender.prototype)) {
    var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
    if (origGetSenders) {
      window.RTCPeerConnection.prototype.getSenders = function getSenders() {
        var _this6 = this;

        var senders = origGetSenders.apply(this, []);
        senders.forEach(function (sender) {
          return sender._pc = _this6;
        });
        return senders;
      };
    }

    var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
    if (origAddTrack) {
      window.RTCPeerConnection.prototype.addTrack = function addTrack() {
        var sender = origAddTrack.apply(this, arguments);
        sender._pc = this;
        return sender;
      };
    }
    window.RTCRtpSender.prototype.getStats = function getStats() {
      var sender = this;
      return this._pc.getStats().then(function (result) {
        return (
          /* Note: this will include stats of all senders that
           *   send a track with the same id as sender.track as
           *   it is not possible to identify the RTCRtpSender.
           */
          utils.filterStats(result, sender.track, true)
        );
      });
    };
  }

  // shim receiver stats.
  if (!('getStats' in window.RTCRtpReceiver.prototype)) {
    var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
    if (origGetReceivers) {
      window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
        var _this7 = this;

        var receivers = origGetReceivers.apply(this, []);
        receivers.forEach(function (receiver) {
          return receiver._pc = _this7;
        });
        return receivers;
      };
    }
    utils.wrapPeerConnectionEvent(window, 'track', function (e) {
      e.receiver._pc = e.srcElement;
      return e;
    });
    window.RTCRtpReceiver.prototype.getStats = function getStats() {
      var receiver = this;
      return this._pc.getStats().then(function (result) {
        return utils.filterStats(result, receiver.track, false);
      });
    };
  }

  if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) {
    return;
  }

  // shim RTCPeerConnection.getStats(track).
  var origGetStats = window.RTCPeerConnection.prototype.getStats;
  window.RTCPeerConnection.prototype.getStats = function getStats() {
    if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) {
      var track = arguments[0];
      var sender = void 0;
      var receiver = void 0;
      var err = void 0;
      this.getSenders().forEach(function (s) {
        if (s.track === track) {
          if (sender) {
            err = true;
          } else {
            sender = s;
          }
        }
      });
      this.getReceivers().forEach(function (r) {
        if (r.track === track) {
          if (receiver) {
            err = true;
          } else {
            receiver = r;
          }
        }
        return r.track === track;
      });
      if (err || sender && receiver) {
        return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError'));
      } else if (sender) {
        return sender.getStats();
      } else if (receiver) {
        return receiver.getStats();
      }
      return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError'));
    }
    return origGetStats.apply(this, arguments);
  };
}

function shimAddTrackRemoveTrackWithNative(window) {
  // shim addTrack/removeTrack with native variants in order to make
  // the interactions with legacy getLocalStreams behave as in other browsers.
  // Keeps a mapping stream.id => [stream, rtpsenders...]
  window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
    var _this8 = this;

    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
    return Object.keys(this._shimmedLocalStreams).map(function (streamId) {
      return _this8._shimmedLocalStreams[streamId][0];
    });
  };

  var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
  window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
    if (!stream) {
      return origAddTrack.apply(this, arguments);
    }
    this._shimmedLocalStreams = this._shimmedLocalStreams || {};

    var sender = origAddTrack.apply(this, arguments);
    if (!this._shimmedLocalStreams[stream.id]) {
      this._shimmedLocalStreams[stream.id] = [stream, sender];
    } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {
      this._shimmedLocalStreams[stream.id].push(sender);
    }
    return sender;
  };

  var origAddStream = window.RTCPeerConnection.prototype.addStream;
  window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
    var _this9 = this;

    this._shimmedLocalStreams = this._shimmedLocalStreams || {};

    stream.getTracks().forEach(function (track) {
      var alreadyExists = _this9.getSenders().find(function (s) {
        return s.track === track;
      });
      if (alreadyExists) {
        throw new DOMException('Track already exists.', 'InvalidAccessError');
      }
    });
    var existingSenders = this.getSenders();
    origAddStream.apply(this, arguments);
    var newSenders = this.getSenders().filter(function (newSender) {
      return existingSenders.indexOf(newSender) === -1;
    });
    this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);
  };

  var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
  window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
    delete this._shimmedLocalStreams[stream.id];
    return origRemoveStream.apply(this, arguments);
  };

  var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
  window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
    var _this10 = this;

    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
    if (sender) {
      Object.keys(this._shimmedLocalStreams).forEach(function (streamId) {
        var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender);
        if (idx !== -1) {
          _this10._shimmedLocalStreams[streamId].splice(idx, 1);
        }
        if (_this10._shimmedLocalStreams[streamId].length === 1) {
          delete _this10._shimmedLocalStreams[streamId];
        }
      });
    }
    return origRemoveTrack.apply(this, arguments);
  };
}

function shimAddTrackRemoveTrack(window, browserDetails) {
  if (!window.RTCPeerConnection) {
    return;
  }
  // shim addTrack and removeTrack.
  if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) {
    return shimAddTrackRemoveTrackWithNative(window);
  }

  // also shim pc.getLocalStreams when addTrack is shimmed
  // to return the original streams.
  var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams;
  window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
    var _this11 = this;

    var nativeStreams = origGetLocalStreams.apply(this);
    this._reverseStreams = this._reverseStreams || {};
    return nativeStreams.map(function (stream) {
      return _this11._reverseStreams[stream.id];
    });
  };

  var origAddStream = window.RTCPeerConnection.prototype.addStream;
  window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
    var _this12 = this;

    this._streams = this._streams || {};
    this._reverseStreams = this._reverseStreams || {};

    stream.getTracks().forEach(function (track) {
      var alreadyExists = _this12.getSenders().find(function (s) {
        return s.track === track;
      });
      if (alreadyExists) {
        throw new DOMException('Track already exists.', 'InvalidAccessError');
      }
    });
    // Add identity mapping for consistency with addTrack.
    // Unless this is being used with a stream from addTrack.
    if (!this._reverseStreams[stream.id]) {
      var newStream = new window.MediaStream(stream.getTracks());
      this._streams[stream.id] = newStream;
      this._reverseStreams[newStream.id] = stream;
      stream = newStream;
    }
    origAddStream.apply(this, [stream]);
  };

  var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
  window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
    this._streams = this._streams || {};
    this._reverseStreams = this._reverseStreams || {};

    origRemoveStream.apply(this, [this._streams[stream.id] || stream]);
    delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id];
    delete this._streams[stream.id];
  };

  window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
    var _this13 = this;

    if (this.signalingState === 'closed') {
      throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
    }
    var streams = [].slice.call(arguments, 1);
    if (streams.length !== 1 || !streams[0].getTracks().find(function (t) {
      return t === track;
    })) {
      // this is not fully correct but all we can manage without
      // [[associated MediaStreams]] internal slot.
      throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError');
    }

    var alreadyExists = this.getSenders().find(function (s) {
      return s.track === track;
    });
    if (alreadyExists) {
      throw new DOMException('Track already exists.', 'InvalidAccessError');
    }

    this._streams = this._streams || {};
    this._reverseStreams = this._reverseStreams || {};
    var oldStream = this._streams[stream.id];
    if (oldStream) {
      // this is using odd Chrome behaviour, use with caution:
      // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815
      // Note: we rely on the high-level addTrack/dtmf shim to
      // create the sender with a dtmf sender.
      oldStream.addTrack(track);

      // Trigger ONN async.
      Promise.resolve().then(function () {
        _this13.dispatchEvent(new Event('negotiationneeded'));
      });
    } else {
      var newStream = new window.MediaStream([track]);
      this._streams[stream.id] = newStream;
      this._reverseStreams[newStream.id] = stream;
      this.addStream(newStream);
    }
    return this.getSenders().find(function (s) {
      return s.track === track;
    });
  };

  // replace the internal stream id with the external one and
  // vice versa.
  function replaceInternalStreamId(pc, description) {
    var sdp = description.sdp;
    Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
      var externalStream = pc._reverseStreams[internalId];
      var internalStream = pc._streams[externalStream.id];
      sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id);
    });
    return new RTCSessionDescription({
      type: description.type,
      sdp: sdp
    });
  }
  function replaceExternalStreamId(pc, description) {
    var sdp = description.sdp;
    Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
      var externalStream = pc._reverseStreams[internalId];
      var internalStream = pc._streams[externalStream.id];
      sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id);
    });
    return new RTCSessionDescription({
      type: description.type,
      sdp: sdp
    });
  }
  ['createOffer', 'createAnswer'].forEach(function (method) {
    var nativeMethod = window.RTCPeerConnection.prototype[method];
    var methodObj = _defineProperty({}, method, function () {
      var _this14 = this;

      var args = arguments;
      var isLegacyCall = arguments.length && typeof arguments[0] === 'function';
      if (isLegacyCall) {
        return nativeMethod.apply(this, [function (description) {
          var desc = replaceInternalStreamId(_this14, description);
          args[0].apply(null, [desc]);
        }, function (err) {
          if (args[1]) {
            args[1].apply(null, err);
          }
        }, arguments[2]]);
      }
      return nativeMethod.apply(this, arguments).then(function (description) {
        return replaceInternalStreamId(_this14, description);
      });
    });
    window.RTCPeerConnection.prototype[method] = methodObj[method];
  });

  var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;
  window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {
    if (!arguments.length || !arguments[0].type) {
      return origSetLocalDescription.apply(this, arguments);
    }
    arguments[0] = replaceExternalStreamId(this, arguments[0]);
    return origSetLocalDescription.apply(this, arguments);
  };

  // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier

  var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription');
  Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', {
    get: function get() {
      var description = origLocalDescription.get.apply(this);
      if (description.type === '') {
        return description;
      }
      return replaceInternalStreamId(this, description);
    }
  });

  window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
    var _this15 = this;

    if (this.signalingState === 'closed') {
      throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
    }
    // We can not yet check for sender instanceof RTCRtpSender
    // since we shim RTPSender. So we check if sender._pc is set.
    if (!sender._pc) {
      throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError');
    }
    var isLocal = sender._pc === this;
    if (!isLocal) {
      throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError');
    }

    // Search for the native stream the senders track belongs to.
    this._streams = this._streams || {};
    var stream = void 0;
    Object.keys(this._streams).forEach(function (streamid) {
      var hasTrack = _this15._streams[streamid].getTracks().find(function (track) {
        return sender.track === track;
      });
      if (hasTrack) {
        stream = _this15._streams[streamid];
      }
    });

    if (stream) {
      if (stream.getTracks().length === 1) {
        // if this is the last track of the stream, remove the stream. This
        // takes care of any shimmed _senders.
        this.removeStream(this._reverseStreams[stream.id]);
      } else {
        // relying on the same odd chrome behaviour as above.
        stream.removeTrack(sender.track);
      }
      this.dispatchEvent(new Event('negotiationneeded'));
    }
  };
}

function shimPeerConnection(window, browserDetails) {
  if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {
    // very basic support for old versions.
    window.RTCPeerConnection = window.webkitRTCPeerConnection;
  }
  if (!window.RTCPeerConnection) {
    return;
  }

  // shim implicit creation of RTCSessionDescription/RTCIceCandidate
  if (browserDetails.version < 53) {
    ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
      var nativeMethod = window.RTCPeerConnection.prototype[method];
      var methodObj = _defineProperty({}, method, function () {
        arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
        return nativeMethod.apply(this, arguments);
      });
      window.RTCPeerConnection.prototype[method] = methodObj[method];
    });
  }
}

// Attempt to fix ONN in plan-b mode.
function fixNegotiationNeeded(window, browserDetails) {
  utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) {
    var pc = e.target;
    if (browserDetails.version < 72 || pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b') {
      if (pc.signalingState !== 'stable') {
        return;
      }
    }
    return e;
  });
}

},{"../utils.js":232,"./getdisplaymedia":221,"./getusermedia":222}],221:[function(require,module,exports){
/*
 *  Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetDisplayMedia = shimGetDisplayMedia;
function shimGetDisplayMedia(window, getSourceId) {
  if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
    return;
  }
  if (!window.navigator.mediaDevices) {
    return;
  }
  // getSourceId is a function that returns a promise resolving with
  // the sourceId of the screen/window/tab to be shared.
  if (typeof getSourceId !== 'function') {
    console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function');
    return;
  }
  window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
    return getSourceId(constraints).then(function (sourceId) {
      var widthSpecified = constraints.video && constraints.video.width;
      var heightSpecified = constraints.video && constraints.video.height;
      var frameRateSpecified = constraints.video && constraints.video.frameRate;
      constraints.video = {
        mandatory: {
          chromeMediaSource: 'desktop',
          chromeMediaSourceId: sourceId,
          maxFrameRate: frameRateSpecified || 3
        }
      };
      if (widthSpecified) {
        constraints.video.mandatory.maxWidth = widthSpecified;
      }
      if (heightSpecified) {
        constraints.video.mandatory.maxHeight = heightSpecified;
      }
      return window.navigator.mediaDevices.getUserMedia(constraints);
    });
  };
}

},{}],222:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.shimGetUserMedia = shimGetUserMedia;

var _utils = require('../utils.js');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

var logging = utils.log;

function shimGetUserMedia(window, browserDetails) {
  var navigator = window && window.navigator;

  if (!navigator.mediaDevices) {
    return;
  }

  var constraintsToChrome_ = function constraintsToChrome_(c) {
    if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) !== 'object' || c.mandatory || c.optional) {
      return c;
    }
    var cc = {};
    Object.keys(c).forEach(function (key) {
      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
        return;
      }
      var r = _typeof(c[key]) === 'object' ? c[key] : { ideal: c[key] };
      if (r.exact !== undefined && typeof r.exact === 'number') {
        r.min = r.max = r.exact;
      }
      var oldname_ = function oldname_(prefix, name) {
        if (prefix) {
          return prefix + name.charAt(0).toUpperCase() + name.slice(1);
        }
        return name === 'deviceId' ? 'sourceId' : name;
      };
      if (r.ideal !== undefined) {
        cc.optional = cc.optional || [];
        var oc = {};
        if (typeof r.ideal === 'number') {
          oc[oldname_('min', key)] = r.ideal;
          cc.optional.push(oc);
          oc = {};
          oc[oldname_('max', key)] = r.ideal;
          cc.optional.push(oc);
        } else {
          oc[oldname_('', key)] = r.ideal;
          cc.optional.push(oc);
        }
      }
      if (r.exact !== undefined && typeof r.exact !== 'number') {
        cc.mandatory = cc.mandatory || {};
        cc.mandatory[oldname_('', key)] = r.exact;
      } else {
        ['min', 'max'].forEach(function (mix) {
          if (r[mix] !== undefined) {
            cc.mandatory = cc.mandatory || {};
            cc.mandatory[oldname_(mix, key)] = r[mix];
          }
        });
      }
    });
    if (c.advanced) {
      cc.optional = (cc.optional || []).concat(c.advanced);
    }
    return cc;
  };

  var shimConstraints_ = function shimConstraints_(constraints, func) {
    if (browserDetails.version >= 61) {
      return func(constraints);
    }
    constraints = JSON.parse(JSON.stringify(constraints));
    if (constraints && _typeof(constraints.audio) === 'object') {
      var remap = function remap(obj, a, b) {
        if (a in obj && !(b in obj)) {
          obj[b] = obj[a];
          delete obj[a];
        }
      };
      constraints = JSON.parse(JSON.stringify(constraints));
      remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');
      remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');
      constraints.audio = constraintsToChrome_(constraints.audio);
    }
    if (constraints && _typeof(constraints.video) === 'object') {
      // Shim facingMode for mobile & surface pro.
      var face = constraints.video.facingMode;
      face = face && ((typeof face === 'undefined' ? 'undefined' : _typeof(face)) === 'object' ? face : { ideal: face });
      var getSupportedFacingModeLies = browserDetails.version < 66;

      if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) {
        delete constraints.video.facingMode;
        var matches = void 0;
        if (face.exact === 'environment' || face.ideal === 'environment') {
          matches = ['back', 'rear'];
        } else if (face.exact === 'user' || face.ideal === 'user') {
          matches = ['front'];
        }
        if (matches) {
          // Look for matches in label, or use last cam for back (typical).
          return navigator.mediaDevices.enumerateDevices().then(function (devices) {
            devices = devices.filter(function (d) {
              return d.kind === 'videoinput';
            });
            var dev = devices.find(function (d) {
              return matches.some(function (match) {
                return d.label.toLowerCase().includes(match);
              });
            });
            if (!dev && devices.length && matches.includes('back')) {
              dev = devices[devices.length - 1]; // more likely the back cam
            }
            if (dev) {
              constraints.video.deviceId = face.exact ? { exact: dev.deviceId } : { ideal: dev.deviceId };
            }
            constraints.video = constraintsToChrome_(constraints.video);
            logging('chrome: ' + JSON.stringify(constraints));
            return func(constraints);
          });
        }
      }
      constraints.video = constraintsToChrome_(constraints.video);
    }
    logging('chrome: ' + JSON.stringify(constraints));
    return func(constraints);
  };

  var shimError_ = function shimError_(e) {
    if (browserDetails.version >= 64) {
      return e;
    }
    return {
      name: {
        PermissionDeniedError: 'NotAllowedError',
        PermissionDismissedError: 'NotAllowedError',
        InvalidStateError: 'NotAllowedError',
        DevicesNotFoundError: 'NotFoundError',
        ConstraintNotSatisfiedError: 'OverconstrainedError',
        TrackStartError: 'NotReadableError',
        MediaDeviceFailedDueToShutdown: 'NotAllowedError',
        MediaDeviceKillSwitchOn: 'NotAllowedError',
        TabCaptureError: 'AbortError',
        ScreenCaptureError: 'AbortError',
        DeviceCaptureError: 'AbortError'
      }[e.name] || e.name,
      message: e.message,
      constraint: e.constraint || e.constraintName,
      toString: function toString() {
        return this.name + (this.message && ': ') + this.message;
      }
    };
  };

  var getUserMedia_ = function getUserMedia_(constraints, onSuccess, onError) {
    shimConstraints_(constraints, function (c) {
      navigator.webkitGetUserMedia(c, onSuccess, function (e) {
        if (onError) {
          onError(shimError_(e));
        }
      });
    });
  };
  navigator.getUserMedia = getUserMedia_.bind(navigator);

  // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia
  // function which returns a Promise, it does not accept spec-style
  // constraints.
  if (navigator.mediaDevices.getUserMedia) {
    var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
    navigator.mediaDevices.getUserMedia = function (cs) {
      return shimConstraints_(cs, function (c) {
        return origGetUserMedia(c).then(function (stream) {
          if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) {
            stream.getTracks().forEach(function (track) {
              track.stop();
            });
            throw new DOMException('', 'NotFoundError');
          }
          return stream;
        }, function (e) {
          return Promise.reject(shimError_(e));
        });
      });
    };
  }
}

},{"../utils.js":232}],223:[function(require,module,exports){
/*
 *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.shimRTCIceCandidate = shimRTCIceCandidate;
exports.shimMaxMessageSize = shimMaxMessageSize;
exports.shimSendThrowTypeError = shimSendThrowTypeError;
exports.shimConnectionState = shimConnectionState;
exports.removeExtmapAllowMixed = removeExtmapAllowMixed;
exports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty;

var _sdp = require('sdp');

var _sdp2 = _interopRequireDefault(_sdp);

var _utils = require('./utils');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function shimRTCIceCandidate(window) {
  // foundation is arbitrarily chosen as an indicator for full support for
  // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface
  if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) {
    return;
  }

  var NativeRTCIceCandidate = window.RTCIceCandidate;
  window.RTCIceCandidate = function RTCIceCandidate(args) {
    // Remove the a= which shouldn't be part of the candidate string.
    if ((typeof args === 'undefined' ? 'undefined' : _typeof(args)) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) {
      args = JSON.parse(JSON.stringify(args));
      args.candidate = args.candidate.substr(2);
    }

    if (args.candidate && args.candidate.length) {
      // Augment the native candidate with the parsed fields.
      var nativeCandidate = new NativeRTCIceCandidate(args);
      var parsedCandidate = _sdp2.default.parseCandidate(args.candidate);
      var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate);

      // Add a serializer that does not serialize the extra attributes.
      augmentedCandidate.toJSON = function toJSON() {
        return {
          candidate: augmentedCandidate.candidate,
          sdpMid: augmentedCandidate.sdpMid,
          sdpMLineIndex: augmentedCandidate.sdpMLineIndex,
          usernameFragment: augmentedCandidate.usernameFragment
        };
      };
      return augmentedCandidate;
    }
    return new NativeRTCIceCandidate(args);
  };
  window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;

  // Hook up the augmented candidate in onicecandidate and
  // addEventListener('icecandidate', ...)
  utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) {
    if (e.candidate) {
      Object.defineProperty(e, 'candidate', {
        value: new window.RTCIceCandidate(e.candidate),
        writable: 'false'
      });
    }
    return e;
  });
}

function shimMaxMessageSize(window, browserDetails) {
  if (!window.RTCPeerConnection) {
    return;
  }

  if (!('sctp' in window.RTCPeerConnection.prototype)) {
    Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {
      get: function get() {
        return typeof this._sctp === 'undefined' ? null : this._sctp;
      }
    });
  }

  var sctpInDescription = function sctpInDescription(description) {
    if (!description || !description.sdp) {
      return false;
    }
    var sections = _sdp2.default.splitSections(description.sdp);
    sections.shift();
    return sections.some(function (mediaSection) {
      var mLine = _sdp2.default.parseMLine(mediaSection);
      return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1;
    });
  };

  var getRemoteFirefoxVersion = function getRemoteFirefoxVersion(description) {
    // TODO: Is there a better solution for detecting Firefox?
    var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);
    if (match === null || match.length < 2) {
      return -1;
    }
    var version = parseInt(match[1], 10);
    // Test for NaN (yes, this is ugly)
    return version !== version ? -1 : version;
  };

  var getCanSendMaxMessageSize = function getCanSendMaxMessageSize(remoteIsFirefox) {
    // Every implementation we know can send at least 64 KiB.
    // Note: Although Chrome is technically able to send up to 256 KiB, the
    //       data does not reach the other peer reliably.
    //       See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419
    var canSendMaxMessageSize = 65536;
    if (browserDetails.browser === 'firefox') {
      if (browserDetails.version < 57) {
        if (remoteIsFirefox === -1) {
          // FF < 57 will send in 16 KiB chunks using the deprecated PPID
          // fragmentation.
          canSendMaxMessageSize = 16384;
        } else {
          // However, other FF (and RAWRTC) can reassemble PPID-fragmented
          // messages. Thus, supporting ~2 GiB when sending.
          canSendMaxMessageSize = 2147483637;
        }
      } else if (browserDetails.version < 60) {
        // Currently, all FF >= 57 will reset the remote maximum message size
        // to the default value when a data channel is created at a later
        // stage. :(
        // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
        canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536;
      } else {
        // FF >= 60 supports sending ~2 GiB
        canSendMaxMessageSize = 2147483637;
      }
    }
    return canSendMaxMessageSize;
  };

  var getMaxMessageSize = function getMaxMessageSize(description, remoteIsFirefox) {
    // Note: 65536 bytes is the default value from the SDP spec. Also,
    //       every implementation we know supports receiving 65536 bytes.
    var maxMessageSize = 65536;

    // FF 57 has a slightly incorrect default remote max message size, so
    // we need to adjust it here to avoid a failure when sending.
    // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697
    if (browserDetails.browser === 'firefox' && browserDetails.version === 57) {
      maxMessageSize = 65535;
    }

    var match = _sdp2.default.matchPrefix(description.sdp, 'a=max-message-size:');
    if (match.length > 0) {
      maxMessageSize = parseInt(match[0].substr(19), 10);
    } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) {
      // If the maximum message size is not present in the remote SDP and
      // both local and remote are Firefox, the remote peer can receive
      // ~2 GiB.
      maxMessageSize = 2147483637;
    }
    return maxMessageSize;
  };

  var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
  window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
    this._sctp = null;
    // Chrome decided to not expose .sctp in plan-b mode.
    // As usual, adapter.js has to do an 'ugly worakaround'
    // to cover up the mess.
    if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {
      var _getConfiguration = this.getConfiguration(),
          sdpSemantics = _getConfiguration.sdpSemantics;

      if (sdpSemantics === 'plan-b') {
        Object.defineProperty(this, 'sctp', {
          get: function get() {
            return typeof this._sctp === 'undefined' ? null : this._sctp;
          },

          enumerable: true,
          configurable: true
        });
      }
    }

    if (sctpInDescription(arguments[0])) {
      // Check if the remote is FF.
      var isFirefox = getRemoteFirefoxVersion(arguments[0]);

      // Get the maximum message size the local peer is capable of sending
      var canSendMMS = getCanSendMaxMessageSize(isFirefox);

      // Get the maximum message size of the remote peer.
      var remoteMMS = getMaxMessageSize(arguments[0], isFirefox);

      // Determine final maximum message size
      var maxMessageSize = void 0;
      if (canSendMMS === 0 && remoteMMS === 0) {
        maxMessageSize = Number.POSITIVE_INFINITY;
      } else if (canSendMMS === 0 || remoteMMS === 0) {
        maxMessageSize = Math.max(canSendMMS, remoteMMS);
      } else {
        maxMessageSize = Math.min(canSendMMS, remoteMMS);
      }

      // Create a dummy RTCSctpTransport object and the 'maxMessageSize'
      // attribute.
      var sctp = {};
      Object.defineProperty(sctp, 'maxMessageSize', {
        get: function get() {
          return maxMessageSize;
        }
      });
      this._sctp = sctp;
    }

    return origSetRemoteDescription.apply(this, arguments);
  };
}

function shimSendThrowTypeError(window) {
  if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) {
    return;
  }

  // Note: Although Firefox >= 57 has a native implementation, the maximum
  //       message size can be reset for all data channels at a later stage.
  //       See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831

  function wrapDcSend(dc, pc) {
    var origDataChannelSend = dc.send;
    dc.send = function send() {
      var data = arguments[0];
      var length = data.length || data.size || data.byteLength;
      if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) {
        throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)');
      }
      return origDataChannelSend.apply(dc, arguments);
    };
  }
  var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel;
  window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() {
    var dataChannel = origCreateDataChannel.apply(this, arguments);
    wrapDcSend(dataChannel, this);
    return dataChannel;
  };
  utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) {
    wrapDcSend(e.channel, e.target);
    return e;
  });
}

/* shims RTCConnectionState by pretending it is the same as iceConnectionState.
 * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12
 * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect
 * since DTLS failures would be hidden. See
 * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827
 * for the Firefox tracking bug.
 */
function shimConnectionState(window) {
  if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) {
    return;
  }
  var proto = window.RTCPeerConnection.prototype;
  Object.defineProperty(proto, 'connectionState', {
    get: function get() {
      return {
        completed: 'connected',
        checking: 'connecting'
      }[this.iceConnectionState] || this.iceConnectionState;
    },

    enumerable: true,
    configurable: true
  });
  Object.defineProperty(proto, 'onconnectionstatechange', {
    get: function get() {
      return this._onconnectionstatechange || null;
    },
    set: function set(cb) {
      if (this._onconnectionstatechange) {
        this.removeEventListener('connectionstatechange', this._onconnectionstatechange);
        delete this._onconnectionstatechange;
      }
      if (cb) {
        this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb);
      }
    },

    enumerable: true,
    configurable: true
  });

  ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) {
    var origMethod = proto[method];
    proto[method] = function () {
      if (!this._connectionstatechangepoly) {
        this._connectionstatechangepoly = function (e) {
          var pc = e.target;
          if (pc._lastConnectionState !== pc.connectionState) {
            pc._lastConnectionState = pc.connectionState;
            var newEvent = new Event('connectionstatechange', e);
            pc.dispatchEvent(newEvent);
          }
          return e;
        };
        this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly);
      }
      return origMethod.apply(this, arguments);
    };
  });
}

function removeExtmapAllowMixed(window, browserDetails) {
  /* remove a=extmap-allow-mixed for webrtc.org < M71 */
  if (!window.RTCPeerConnection) {
    return;
  }
  if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {
    return;
  }
  if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {
    return;
  }
  var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;
  window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) {
    if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) {
      var sdp = desc.sdp.split('\n').filter(function (line) {
        return line.trim() !== 'a=extmap-allow-mixed';
      }).join('\n');
      // Safari enforces read-only-ness of RTCSessionDescription fields.
      if (window.RTCSessionDescription && desc instanceof window.RTCSessionDescription) {
        arguments[0] = new window.RTCSessionDescription({
          type: desc.type,
          sdp: sdp
        });
      } else {
        desc.sdp = sdp;
      }
    }
    return nativeSRD.apply(this, arguments);
  };
}

function shimAddIceCandidateNullOrEmpty(window, browserDetails) {
  // Support for addIceCandidate(null or undefined)
  // as well as addIceCandidate({candidate: "", ...})
  // https://bugs.chromium.org/p/chromium/issues/detail?id=978582
  // Note: must be called before other polyfills which change the signature.
  if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {
    return;
  }
  var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;
  if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {
    return;
  }
  window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {
    if (!arguments[0]) {
      if (arguments[1]) {
        arguments[1].apply(null);
      }
      return Promise.resolve();
    }
    // Firefox 68+ emits and processes {candidate: "", ...}, ignore
    // in older versions.
    // Native support for ignoring exists for Chrome M77+.
    // Safari ignores as well, exact version unknown but works in the same
    // version that also ignores addIceCandidate(null).
    if ((browserDetails.browser === 'chrome' && browserDetails.version < 78 || browserDetails.browser === 'firefox' && browserDetails.version < 68 || browserDetails.browser === 'safari') && arguments[0] && arguments[0].candidate === '') {
      return Promise.resolve();
    }
    return nativeAddIceCandidate.apply(this, arguments);
  };
}

},{"./utils":232,"sdp":175}],224:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;

var _getusermedia = require('./getusermedia');

Object.defineProperty(exports, 'shimGetUserMedia', {
  enumerable: true,
  get: function get() {
    return _getusermedia.shimGetUserMedia;
  }
});

var _getdisplaymedia = require('./getdisplaymedia');

Object.defineProperty(exports, 'shimGetDisplayMedia', {
  enumerable: true,
  get: function get() {
    return _getdisplaymedia.shimGetDisplayMedia;
  }
});
exports.shimPeerConnection = shimPeerConnection;
exports.shimReplaceTrack = shimReplaceTrack;

var _utils = require('../utils');

var utils = _interopRequireWildcard(_utils);

var _filtericeservers = require('./filtericeservers');

var _rtcpeerconnectionShim = require('rtcpeerconnection-shim');

var _rtcpeerconnectionShim2 = _interopRequireDefault(_rtcpeerconnectionShim);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function shimPeerConnection(window, browserDetails) {
  if (window.RTCIceGatherer) {
    if (!window.RTCIceCandidate) {
      window.RTCIceCandidate = function RTCIceCandidate(args) {
        return args;
      };
    }
    if (!window.RTCSessionDescription) {
      window.RTCSessionDescription = function RTCSessionDescription(args) {
        return args;
      };
    }
    // this adds an additional event listener to MediaStrackTrack that signals
    // when a tracks enabled property was changed. Workaround for a bug in
    // addStream, see below. No longer required in 15025+
    if (browserDetails.version < 15025) {
      var origMSTEnabled = Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype, 'enabled');
      Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {
        set: function set(value) {
          origMSTEnabled.set.call(this, value);
          var ev = new Event('enabled');
          ev.enabled = value;
          this.dispatchEvent(ev);
        }
      });
    }
  }

  // ORTC defines the DTMF sender a bit different.
  // https://github.com/w3c/ortc/issues/714
  if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
    Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
      get: function get() {
        if (this._dtmf === undefined) {
          if (this.track.kind === 'audio') {
            this._dtmf = new window.RTCDtmfSender(this);
          } else if (this.track.kind === 'video') {
            this._dtmf = null;
          }
        }
        return this._dtmf;
      }
    });
  }
  // Edge currently only implements the RTCDtmfSender, not the
  // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*
  if (window.RTCDtmfSender && !window.RTCDTMFSender) {
    window.RTCDTMFSender = window.RTCDtmfSender;
  }

  var RTCPeerConnectionShim = (0, _rtcpeerconnectionShim2.default)(window, browserDetails.version);
  window.RTCPeerConnection = function RTCPeerConnection(config) {
    if (config && config.iceServers) {
      config.iceServers = (0, _filtericeservers.filterIceServers)(config.iceServers, browserDetails.version);
      utils.log('ICE servers after filtering:', config.iceServers);
    }
    return new RTCPeerConnectionShim(config);
  };
  window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype;
}

function shimReplaceTrack(window) {
  // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614
  if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) {
    window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack;
  }
}

},{"../utils":232,"./filtericeservers":225,"./getdisplaymedia":226,"./getusermedia":227,"rtcpeerconnection-shim":172}],225:[function(require,module,exports){
/*
 *  Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.filterIceServers = filterIceServers;

var _utils = require('../utils');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

// Edge does not like
// 1) stun: filtered after 14393 unless ?transport=udp is present
// 2) turn: that does not have all of turn:host:port?transport=udp
// 3) turn: with ipv6 addresses
// 4) turn: occurring muliple times
function filterIceServers(iceServers, edgeVersion) {
  var hasTurn = false;
  iceServers = JSON.parse(JSON.stringify(iceServers));
  return iceServers.filter(function (server) {
    if (server && (server.urls || server.url)) {
      var urls = server.urls || server.url;
      if (server.url && !server.urls) {
        utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
      }
      var isString = typeof urls === 'string';
      if (isString) {
        urls = [urls];
      }
      urls = urls.filter(function (url) {
        // filter STUN unconditionally.
        if (url.indexOf('stun:') === 0) {
          return false;
        }

        var validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp');
        if (validTurn && !hasTurn) {
          hasTurn = true;
          return true;
        }
        return validTurn && !hasTurn;
      });

      delete server.url;
      server.urls = isString ? urls[0] : urls;
      return !!urls.length;
    }
  });
}

},{"../utils":232}],226:[function(require,module,exports){
/*
 *  Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetDisplayMedia = shimGetDisplayMedia;
function shimGetDisplayMedia(window) {
  if (!('getDisplayMedia' in window.navigator)) {
    return;
  }
  if (!window.navigator.mediaDevices) {
    return;
  }
  if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
    return;
  }
  window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator);
}

},{}],227:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetUserMedia = shimGetUserMedia;
function shimGetUserMedia(window) {
  var navigator = window && window.navigator;

  var shimError_ = function shimError_(e) {
    return {
      name: { PermissionDeniedError: 'NotAllowedError' }[e.name] || e.name,
      message: e.message,
      constraint: e.constraint,
      toString: function toString() {
        return this.name;
      }
    };
  };

  // getUserMedia error shim.
  var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
  navigator.mediaDevices.getUserMedia = function (c) {
    return origGetUserMedia(c).catch(function (e) {
      return Promise.reject(shimError_(e));
    });
  };
}

},{}],228:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _getusermedia = require('./getusermedia');

Object.defineProperty(exports, 'shimGetUserMedia', {
  enumerable: true,
  get: function get() {
    return _getusermedia.shimGetUserMedia;
  }
});

var _getdisplaymedia = require('./getdisplaymedia');

Object.defineProperty(exports, 'shimGetDisplayMedia', {
  enumerable: true,
  get: function get() {
    return _getdisplaymedia.shimGetDisplayMedia;
  }
});
exports.shimOnTrack = shimOnTrack;
exports.shimPeerConnection = shimPeerConnection;
exports.shimSenderGetStats = shimSenderGetStats;
exports.shimReceiverGetStats = shimReceiverGetStats;
exports.shimRemoveStream = shimRemoveStream;
exports.shimRTCDataChannel = shimRTCDataChannel;
exports.shimAddTransceiver = shimAddTransceiver;
exports.shimGetParameters = shimGetParameters;
exports.shimCreateOffer = shimCreateOffer;
exports.shimCreateAnswer = shimCreateAnswer;

var _utils = require('../utils');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function shimOnTrack(window) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
    Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
      get: function get() {
        return { receiver: this.receiver };
      }
    });
  }
}

function shimPeerConnection(window, browserDetails) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {
    return; // probably media.peerconnection.enabled=false in about:config
  }
  if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {
    // very basic support for old versions.
    window.RTCPeerConnection = window.mozRTCPeerConnection;
  }

  if (browserDetails.version < 53) {
    // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.
    ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
      var nativeMethod = window.RTCPeerConnection.prototype[method];
      var methodObj = _defineProperty({}, method, function () {
        arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
        return nativeMethod.apply(this, arguments);
      });
      window.RTCPeerConnection.prototype[method] = methodObj[method];
    });
  }

  var modernStatsTypes = {
    inboundrtp: 'inbound-rtp',
    outboundrtp: 'outbound-rtp',
    candidatepair: 'candidate-pair',
    localcandidate: 'local-candidate',
    remotecandidate: 'remote-candidate'
  };

  var nativeGetStats = window.RTCPeerConnection.prototype.getStats;
  window.RTCPeerConnection.prototype.getStats = function getStats() {
    var _arguments = Array.prototype.slice.call(arguments),
        selector = _arguments[0],
        onSucc = _arguments[1],
        onErr = _arguments[2];

    return nativeGetStats.apply(this, [selector || null]).then(function (stats) {
      if (browserDetails.version < 53 && !onSucc) {
        // Shim only promise getStats with spec-hyphens in type names
        // Leave callback version alone; misc old uses of forEach before Map
        try {
          stats.forEach(function (stat) {
            stat.type = modernStatsTypes[stat.type] || stat.type;
          });
        } catch (e) {
          if (e.name !== 'TypeError') {
            throw e;
          }
          // Avoid TypeError: "type" is read-only, in old versions. 34-43ish
          stats.forEach(function (stat, i) {
            stats.set(i, Object.assign({}, stat, {
              type: modernStatsTypes[stat.type] || stat.type
            }));
          });
        }
      }
      return stats;
    }).then(onSucc, onErr);
  };
}

function shimSenderGetStats(window) {
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
    return;
  }
  if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {
    return;
  }
  var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
  if (origGetSenders) {
    window.RTCPeerConnection.prototype.getSenders = function getSenders() {
      var _this = this;

      var senders = origGetSenders.apply(this, []);
      senders.forEach(function (sender) {
        return sender._pc = _this;
      });
      return senders;
    };
  }

  var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
  if (origAddTrack) {
    window.RTCPeerConnection.prototype.addTrack = function addTrack() {
      var sender = origAddTrack.apply(this, arguments);
      sender._pc = this;
      return sender;
    };
  }
  window.RTCRtpSender.prototype.getStats = function getStats() {
    return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map());
  };
}

function shimReceiverGetStats(window) {
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
    return;
  }
  if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {
    return;
  }
  var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
  if (origGetReceivers) {
    window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
      var _this2 = this;

      var receivers = origGetReceivers.apply(this, []);
      receivers.forEach(function (receiver) {
        return receiver._pc = _this2;
      });
      return receivers;
    };
  }
  utils.wrapPeerConnectionEvent(window, 'track', function (e) {
    e.receiver._pc = e.srcElement;
    return e;
  });
  window.RTCRtpReceiver.prototype.getStats = function getStats() {
    return this._pc.getStats(this.track);
  };
}

function shimRemoveStream(window) {
  if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) {
    return;
  }
  window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
    var _this3 = this;

    utils.deprecated('removeStream', 'removeTrack');
    this.getSenders().forEach(function (sender) {
      if (sender.track && stream.getTracks().includes(sender.track)) {
        _this3.removeTrack(sender);
      }
    });
  };
}

function shimRTCDataChannel(window) {
  // rename DataChannel to RTCDataChannel (native fix in FF60):
  // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851
  if (window.DataChannel && !window.RTCDataChannel) {
    window.RTCDataChannel = window.DataChannel;
  }
}

function shimAddTransceiver(window) {
  // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
  // Firefox ignores the init sendEncodings options passed to addTransceiver
  // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {
    return;
  }
  var origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;
  if (origAddTransceiver) {
    window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() {
      this.setParametersPromises = [];
      var initParameters = arguments[1];
      var shouldPerformCheck = initParameters && 'sendEncodings' in initParameters;
      if (shouldPerformCheck) {
        // If sendEncodings params are provided, validate grammar
        initParameters.sendEncodings.forEach(function (encodingParam) {
          if ('rid' in encodingParam) {
            var ridRegex = /^[a-z0-9]{0,16}$/i;
            if (!ridRegex.test(encodingParam.rid)) {
              throw new TypeError('Invalid RID value provided.');
            }
          }
          if ('scaleResolutionDownBy' in encodingParam) {
            if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {
              throw new RangeError('scale_resolution_down_by must be >= 1.0');
            }
          }
          if ('maxFramerate' in encodingParam) {
            if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {
              throw new RangeError('max_framerate must be >= 0.0');
            }
          }
        });
      }
      var transceiver = origAddTransceiver.apply(this, arguments);
      if (shouldPerformCheck) {
        // Check if the init options were applied. If not we do this in an
        // asynchronous way and save the promise reference in a global object.
        // This is an ugly hack, but at the same time is way more robust than
        // checking the sender parameters before and after the createOffer
        // Also note that after the createoffer we are not 100% sure that
        // the params were asynchronously applied so we might miss the
        // opportunity to recreate offer.
        var sender = transceiver.sender;

        var params = sender.getParameters();
        if (!('encodings' in params) ||
        // Avoid being fooled by patched getParameters() below.
        params.encodings.length === 1 && Object.keys(params.encodings[0]).length === 0) {
          params.encodings = initParameters.sendEncodings;
          sender.sendEncodings = initParameters.sendEncodings;
          this.setParametersPromises.push(sender.setParameters(params).then(function () {
            delete sender.sendEncodings;
          }).catch(function () {
            delete sender.sendEncodings;
          }));
        }
      }
      return transceiver;
    };
  }
}

function shimGetParameters(window) {
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCRtpSender)) {
    return;
  }
  var origGetParameters = window.RTCRtpSender.prototype.getParameters;
  if (origGetParameters) {
    window.RTCRtpSender.prototype.getParameters = function getParameters() {
      var params = origGetParameters.apply(this, arguments);
      if (!('encodings' in params)) {
        params.encodings = [].concat(this.sendEncodings || [{}]);
      }
      return params;
    };
  }
}

function shimCreateOffer(window) {
  // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
  // Firefox ignores the init sendEncodings options passed to addTransceiver
  // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {
    return;
  }
  var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
  window.RTCPeerConnection.prototype.createOffer = function createOffer() {
    var _this4 = this,
        _arguments2 = arguments;

    if (this.setParametersPromises && this.setParametersPromises.length) {
      return Promise.all(this.setParametersPromises).then(function () {
        return origCreateOffer.apply(_this4, _arguments2);
      }).finally(function () {
        _this4.setParametersPromises = [];
      });
    }
    return origCreateOffer.apply(this, arguments);
  };
}

function shimCreateAnswer(window) {
  // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
  // Firefox ignores the init sendEncodings options passed to addTransceiver
  // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
  if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {
    return;
  }
  var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;
  window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {
    var _this5 = this,
        _arguments3 = arguments;

    if (this.setParametersPromises && this.setParametersPromises.length) {
      return Promise.all(this.setParametersPromises).then(function () {
        return origCreateAnswer.apply(_this5, _arguments3);
      }).finally(function () {
        _this5.setParametersPromises = [];
      });
    }
    return origCreateAnswer.apply(this, arguments);
  };
}

},{"../utils":232,"./getdisplaymedia":229,"./getusermedia":230}],229:[function(require,module,exports){
/*
 *  Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.shimGetDisplayMedia = shimGetDisplayMedia;
function shimGetDisplayMedia(window, preferredMediaSource) {
  if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
    return;
  }
  if (!window.navigator.mediaDevices) {
    return;
  }
  window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
    if (!(constraints && constraints.video)) {
      var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined');
      err.name = 'NotFoundError';
      // from https://heycam.github.io/webidl/#idl-DOMException-error-names
      err.code = 8;
      return Promise.reject(err);
    }
    if (constraints.video === true) {
      constraints.video = { mediaSource: preferredMediaSource };
    } else {
      constraints.video.mediaSource = preferredMediaSource;
    }
    return window.navigator.mediaDevices.getUserMedia(constraints);
  };
}

},{}],230:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.shimGetUserMedia = shimGetUserMedia;

var _utils = require('../utils');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function shimGetUserMedia(window, browserDetails) {
  var navigator = window && window.navigator;
  var MediaStreamTrack = window && window.MediaStreamTrack;

  navigator.getUserMedia = function (constraints, onSuccess, onError) {
    // Replace Firefox 44+'s deprecation warning with unprefixed version.
    utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia');
    navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
  };

  if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {
    var remap = function remap(obj, a, b) {
      if (a in obj && !(b in obj)) {
        obj[b] = obj[a];
        delete obj[a];
      }
    };

    var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
    navigator.mediaDevices.getUserMedia = function (c) {
      if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object' && _typeof(c.audio) === 'object') {
        c = JSON.parse(JSON.stringify(c));
        remap(c.audio, 'autoGainControl', 'mozAutoGainControl');
        remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');
      }
      return nativeGetUserMedia(c);
    };

    if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {
      var nativeGetSettings = MediaStreamTrack.prototype.getSettings;
      MediaStreamTrack.prototype.getSettings = function () {
        var obj = nativeGetSettings.apply(this, arguments);
        remap(obj, 'mozAutoGainControl', 'autoGainControl');
        remap(obj, 'mozNoiseSuppression', 'noiseSuppression');
        return obj;
      };
    }

    if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {
      var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;
      MediaStreamTrack.prototype.applyConstraints = function (c) {
        if (this.kind === 'audio' && (typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object') {
          c = JSON.parse(JSON.stringify(c));
          remap(c, 'autoGainControl', 'mozAutoGainControl');
          remap(c, 'noiseSuppression', 'mozNoiseSuppression');
        }
        return nativeApplyConstraints.apply(this, [c]);
      };
    }
  }
}

},{"../utils":232}],231:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.shimLocalStreamsAPI = shimLocalStreamsAPI;
exports.shimRemoteStreamsAPI = shimRemoteStreamsAPI;
exports.shimCallbacksAPI = shimCallbacksAPI;
exports.shimGetUserMedia = shimGetUserMedia;
exports.shimConstraints = shimConstraints;
exports.shimRTCIceServerUrls = shimRTCIceServerUrls;
exports.shimTrackEventTransceiver = shimTrackEventTransceiver;
exports.shimCreateOfferLegacy = shimCreateOfferLegacy;
exports.shimAudioContext = shimAudioContext;

var _utils = require('../utils');

var utils = _interopRequireWildcard(_utils);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function shimLocalStreamsAPI(window) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {
    return;
  }
  if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {
    window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
      if (!this._localStreams) {
        this._localStreams = [];
      }
      return this._localStreams;
    };
  }
  if (!('addStream' in window.RTCPeerConnection.prototype)) {
    var _addTrack = window.RTCPeerConnection.prototype.addTrack;
    window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
      var _this = this;

      if (!this._localStreams) {
        this._localStreams = [];
      }
      if (!this._localStreams.includes(stream)) {
        this._localStreams.push(stream);
      }
      // Try to emulate Chrome's behaviour of adding in audio-video order.
      // Safari orders by track id.
      stream.getAudioTracks().forEach(function (track) {
        return _addTrack.call(_this, track, stream);
      });
      stream.getVideoTracks().forEach(function (track) {
        return _addTrack.call(_this, track, stream);
      });
    };

    window.RTCPeerConnection.prototype.addTrack = function addTrack(track) {
      var _this2 = this;

      for (var _len = arguments.length, streams = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
        streams[_key - 1] = arguments[_key];
      }

      if (streams) {
        streams.forEach(function (stream) {
          if (!_this2._localStreams) {
            _this2._localStreams = [stream];
          } else if (!_this2._localStreams.includes(stream)) {
            _this2._localStreams.push(stream);
          }
        });
      }
      return _addTrack.apply(this, arguments);
    };
  }
  if (!('removeStream' in window.RTCPeerConnection.prototype)) {
    window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
      var _this3 = this;

      if (!this._localStreams) {
        this._localStreams = [];
      }
      var index = this._localStreams.indexOf(stream);
      if (index === -1) {
        return;
      }
      this._localStreams.splice(index, 1);
      var tracks = stream.getTracks();
      this.getSenders().forEach(function (sender) {
        if (tracks.includes(sender.track)) {
          _this3.removeTrack(sender);
        }
      });
    };
  }
}

function shimRemoteStreamsAPI(window) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {
    return;
  }
  if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {
    window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() {
      return this._remoteStreams ? this._remoteStreams : [];
    };
  }
  if (!('onaddstream' in window.RTCPeerConnection.prototype)) {
    Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {
      get: function get() {
        return this._onaddstream;
      },
      set: function set(f) {
        var _this4 = this;

        if (this._onaddstream) {
          this.removeEventListener('addstream', this._onaddstream);
          this.removeEventListener('track', this._onaddstreampoly);
        }
        this.addEventListener('addstream', this._onaddstream = f);
        this.addEventListener('track', this._onaddstreampoly = function (e) {
          e.streams.forEach(function (stream) {
            if (!_this4._remoteStreams) {
              _this4._remoteStreams = [];
            }
            if (_this4._remoteStreams.includes(stream)) {
              return;
            }
            _this4._remoteStreams.push(stream);
            var event = new Event('addstream');
            event.stream = stream;
            _this4.dispatchEvent(event);
          });
        });
      }
    });
    var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
    window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
      var pc = this;
      if (!this._onaddstreampoly) {
        this.addEventListener('track', this._onaddstreampoly = function (e) {
          e.streams.forEach(function (stream) {
            if (!pc._remoteStreams) {
              pc._remoteStreams = [];
            }
            if (pc._remoteStreams.indexOf(stream) >= 0) {
              return;
            }
            pc._remoteStreams.push(stream);
            var event = new Event('addstream');
            event.stream = stream;
            pc.dispatchEvent(event);
          });
        });
      }
      return origSetRemoteDescription.apply(pc, arguments);
    };
  }
}

function shimCallbacksAPI(window) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {
    return;
  }
  var prototype = window.RTCPeerConnection.prototype;
  var origCreateOffer = prototype.createOffer;
  var origCreateAnswer = prototype.createAnswer;
  var setLocalDescription = prototype.setLocalDescription;
  var setRemoteDescription = prototype.setRemoteDescription;
  var addIceCandidate = prototype.addIceCandidate;

  prototype.createOffer = function createOffer(successCallback, failureCallback) {
    var options = arguments.length >= 2 ? arguments[2] : arguments[0];
    var promise = origCreateOffer.apply(this, [options]);
    if (!failureCallback) {
      return promise;
    }
    promise.then(successCallback, failureCallback);
    return Promise.resolve();
  };

  prototype.createAnswer = function createAnswer(successCallback, failureCallback) {
    var options = arguments.length >= 2 ? arguments[2] : arguments[0];
    var promise = origCreateAnswer.apply(this, [options]);
    if (!failureCallback) {
      return promise;
    }
    promise.then(successCallback, failureCallback);
    return Promise.resolve();
  };

  var withCallback = function withCallback(description, successCallback, failureCallback) {
    var promise = setLocalDescription.apply(this, [description]);
    if (!failureCallback) {
      return promise;
    }
    promise.then(successCallback, failureCallback);
    return Promise.resolve();
  };
  prototype.setLocalDescription = withCallback;

  withCallback = function withCallback(description, successCallback, failureCallback) {
    var promise = setRemoteDescription.apply(this, [description]);
    if (!failureCallback) {
      return promise;
    }
    promise.then(successCallback, failureCallback);
    return Promise.resolve();
  };
  prototype.setRemoteDescription = withCallback;

  withCallback = function withCallback(candidate, successCallback, failureCallback) {
    var promise = addIceCandidate.apply(this, [candidate]);
    if (!failureCallback) {
      return promise;
    }
    promise.then(successCallback, failureCallback);
    return Promise.resolve();
  };
  prototype.addIceCandidate = withCallback;
}

function shimGetUserMedia(window) {
  var navigator = window && window.navigator;

  if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
    // shim not needed in Safari 12.1
    var mediaDevices = navigator.mediaDevices;
    var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);
    navigator.mediaDevices.getUserMedia = function (constraints) {
      return _getUserMedia(shimConstraints(constraints));
    };
  }

  if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
    navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {
      navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb);
    }.bind(navigator);
  }
}

function shimConstraints(constraints) {
  if (constraints && constraints.video !== undefined) {
    return Object.assign({}, constraints, { video: utils.compactObject(constraints.video) });
  }

  return constraints;
}

function shimRTCIceServerUrls(window) {
  if (!window.RTCPeerConnection) {
    return;
  }
  // migrate from non-spec RTCIceServer.url to RTCIceServer.urls
  var OrigPeerConnection = window.RTCPeerConnection;
  window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) {
    if (pcConfig && pcConfig.iceServers) {
      var newIceServers = [];
      for (var i = 0; i < pcConfig.iceServers.length; i++) {
        var server = pcConfig.iceServers[i];
        if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) {
          utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
          server = JSON.parse(JSON.stringify(server));
          server.urls = server.url;
          delete server.url;
          newIceServers.push(server);
        } else {
          newIceServers.push(pcConfig.iceServers[i]);
        }
      }
      pcConfig.iceServers = newIceServers;
    }
    return new OrigPeerConnection(pcConfig, pcConstraints);
  };
  window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;
  // wrap static methods. Currently just generateCertificate.
  if ('generateCertificate' in OrigPeerConnection) {
    Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
      get: function get() {
        return OrigPeerConnection.generateCertificate;
      }
    });
  }
}

function shimTrackEventTransceiver(window) {
  // Add event.transceiver member over deprecated event.receiver
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
    Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
      get: function get() {
        return { receiver: this.receiver };
      }
    });
  }
}

function shimCreateOfferLegacy(window) {
  var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
  window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) {
    if (offerOptions) {
      if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {
        // support bit values
        offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;
      }
      var audioTransceiver = this.getTransceivers().find(function (transceiver) {
        return transceiver.receiver.track.kind === 'audio';
      });
      if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {
        if (audioTransceiver.direction === 'sendrecv') {
          if (audioTransceiver.setDirection) {
            audioTransceiver.setDirection('sendonly');
          } else {
            audioTransceiver.direction = 'sendonly';
          }
        } else if (audioTransceiver.direction === 'recvonly') {
          if (audioTransceiver.setDirection) {
            audioTransceiver.setDirection('inactive');
          } else {
            audioTransceiver.direction = 'inactive';
          }
        }
      } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) {
        this.addTransceiver('audio');
      }

      if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {
        // support bit values
        offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;
      }
      var videoTransceiver = this.getTransceivers().find(function (transceiver) {
        return transceiver.receiver.track.kind === 'video';
      });
      if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {
        if (videoTransceiver.direction === 'sendrecv') {
          if (videoTransceiver.setDirection) {
            videoTransceiver.setDirection('sendonly');
          } else {
            videoTransceiver.direction = 'sendonly';
          }
        } else if (videoTransceiver.direction === 'recvonly') {
          if (videoTransceiver.setDirection) {
            videoTransceiver.setDirection('inactive');
          } else {
            videoTransceiver.direction = 'inactive';
          }
        }
      } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) {
        this.addTransceiver('video');
      }
    }
    return origCreateOffer.apply(this, arguments);
  };
}

function shimAudioContext(window) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || window.AudioContext) {
    return;
  }
  window.AudioContext = window.webkitAudioContext;
}

},{"../utils":232}],232:[function(require,module,exports){
/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
/* eslint-env node */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.extractVersion = extractVersion;
exports.wrapPeerConnectionEvent = wrapPeerConnectionEvent;
exports.disableLog = disableLog;
exports.disableWarnings = disableWarnings;
exports.log = log;
exports.deprecated = deprecated;
exports.detectBrowser = detectBrowser;
exports.compactObject = compactObject;
exports.walkStats = walkStats;
exports.filterStats = filterStats;

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var logDisabled_ = true;
var deprecationWarnings_ = true;

/**
 * Extract browser version out of the provided user agent string.
 *
 * @param {!string} uastring userAgent string.
 * @param {!string} expr Regular expression used as match criteria.
 * @param {!number} pos position in the version string to be returned.
 * @return {!number} browser version.
 */
function extractVersion(uastring, expr, pos) {
  var match = uastring.match(expr);
  return match && match.length >= pos && parseInt(match[pos], 10);
}

// Wraps the peerconnection event eventNameToWrap in a function
// which returns the modified event object (or false to prevent
// the event).
function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {
  if (!window.RTCPeerConnection) {
    return;
  }
  var proto = window.RTCPeerConnection.prototype;
  var nativeAddEventListener = proto.addEventListener;
  proto.addEventListener = function (nativeEventName, cb) {
    if (nativeEventName !== eventNameToWrap) {
      return nativeAddEventListener.apply(this, arguments);
    }
    var wrappedCallback = function wrappedCallback(e) {
      var modifiedEvent = wrapper(e);
      if (modifiedEvent) {
        if (cb.handleEvent) {
          cb.handleEvent(modifiedEvent);
        } else {
          cb(modifiedEvent);
        }
      }
    };
    this._eventMap = this._eventMap || {};
    if (!this._eventMap[eventNameToWrap]) {
      this._eventMap[eventNameToWrap] = new Map();
    }
    this._eventMap[eventNameToWrap].set(cb, wrappedCallback);
    return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]);
  };

  var nativeRemoveEventListener = proto.removeEventListener;
  proto.removeEventListener = function (nativeEventName, cb) {
    if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[eventNameToWrap]) {
      return nativeRemoveEventListener.apply(this, arguments);
    }
    if (!this._eventMap[eventNameToWrap].has(cb)) {
      return nativeRemoveEventListener.apply(this, arguments);
    }
    var unwrappedCb = this._eventMap[eventNameToWrap].get(cb);
    this._eventMap[eventNameToWrap].delete(cb);
    if (this._eventMap[eventNameToWrap].size === 0) {
      delete this._eventMap[eventNameToWrap];
    }
    if (Object.keys(this._eventMap).length === 0) {
      delete this._eventMap;
    }
    return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]);
  };

  Object.defineProperty(proto, 'on' + eventNameToWrap, {
    get: function get() {
      return this['_on' + eventNameToWrap];
    },
    set: function set(cb) {
      if (this['_on' + eventNameToWrap]) {
        this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]);
        delete this['_on' + eventNameToWrap];
      }
      if (cb) {
        this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb);
      }
    },

    enumerable: true,
    configurable: true
  });
}

function disableLog(bool) {
  if (typeof bool !== 'boolean') {
    return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');
  }
  logDisabled_ = bool;
  return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled';
}

/**
 * Disable or enable deprecation warnings
 * @param {!boolean} bool set to true to disable warnings.
 */
function disableWarnings(bool) {
  if (typeof bool !== 'boolean') {
    return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');
  }
  deprecationWarnings_ = !bool;
  return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');
}

function log() {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object') {
    if (logDisabled_) {
      return;
    }
    if (typeof console !== 'undefined' && typeof console.log === 'function') {
      console.log.apply(console, arguments);
    }
  }
}

/**
 * Shows a deprecation warning suggesting the modern and spec-compatible API.
 */
function deprecated(oldMethod, newMethod) {
  if (!deprecationWarnings_) {
    return;
  }
  console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.');
}

/**
 * Browser detector.
 *
 * @return {object} result containing browser and version
 *     properties.
 */
function detectBrowser(window) {
  // Returned result object.
  var result = { browser: null, version: null };

  // Fail early if it's not a browser
  if (typeof window === 'undefined' || !window.navigator) {
    result.browser = 'Not a browser.';
    return result;
  }

  var navigator = window.navigator;


  if (navigator.mozGetUserMedia) {
    // Firefox.
    result.browser = 'firefox';
    result.version = extractVersion(navigator.userAgent, /Firefox\/(\d+)\./, 1);
  } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) {
    // Chrome, Chromium, Webview, Opera.
    // Version matches Chrome/WebRTC version.
    // Chrome 74 removed webkitGetUserMedia on http as well so we need the
    // more complicated fallback to webkitRTCPeerConnection.
    result.browser = 'chrome';
    result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2);
  } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) {
    // Edge.
    result.browser = 'edge';
    result.version = extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2);
  } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) {
    // Safari.
    result.browser = 'safari';
    result.version = extractVersion(navigator.userAgent, /AppleWebKit\/(\d+)\./, 1);
    result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype;
  } else {
    // Default fallthrough: not supported.
    result.browser = 'Not a supported browser.';
    return result;
  }

  return result;
}

/**
 * Checks if something is an object.
 *
 * @param {*} val The something you want to check.
 * @return true if val is an object, false otherwise.
 */
function isObject(val) {
  return Object.prototype.toString.call(val) === '[object Object]';
}

/**
 * Remove all empty objects and undefined values
 * from a nested object -- an enhanced and vanilla version
 * of Lodash's `compact`.
 */
function compactObject(data) {
  if (!isObject(data)) {
    return data;
  }

  return Object.keys(data).reduce(function (accumulator, key) {
    var isObj = isObject(data[key]);
    var value = isObj ? compactObject(data[key]) : data[key];
    var isEmptyObject = isObj && !Object.keys(value).length;
    if (value === undefined || isEmptyObject) {
      return accumulator;
    }
    return Object.assign(accumulator, _defineProperty({}, key, value));
  }, {});
}

/* iterates the stats graph recursively. */
function walkStats(stats, base, resultSet) {
  if (!base || resultSet.has(base.id)) {
    return;
  }
  resultSet.set(base.id, base);
  Object.keys(base).forEach(function (name) {
    if (name.endsWith('Id')) {
      walkStats(stats, stats.get(base[name]), resultSet);
    } else if (name.endsWith('Ids')) {
      base[name].forEach(function (id) {
        walkStats(stats, stats.get(id), resultSet);
      });
    }
  });
}

/* filter getStats for a sender/receiver track. */
function filterStats(result, track, outbound) {
  var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';
  var filteredResult = new Map();
  if (track === null) {
    return filteredResult;
  }
  var trackStats = [];
  result.forEach(function (value) {
    if (value.type === 'track' && value.trackIdentifier === track.id) {
      trackStats.push(value);
    }
  });
  trackStats.forEach(function (trackStat) {
    result.forEach(function (stats) {
      if (stats.type === streamStatsType && stats.trackId === trackStat.id) {
        walkStats(result, stats, filteredResult);
      }
    });
  });
  return filteredResult;
}

},{}],233:[function(require,module,exports){
module.exports = extend

var hasOwnProperty = Object.prototype.hasOwnProperty;

function extend() {
    var target = {}

    for (var i = 0; i < arguments.length; i++) {
        var source = arguments[i]

        for (var key in source) {
            if (hasOwnProperty.call(source, key)) {
                target[key] = source[key]
            }
        }
    }

    return target
}

},{}],234:[function(require,module,exports){
'use strict';

/** JSHint inline rules */
/* globals Strophe, $pres, $msg, $iq */

var chatUtils = require('./qbChatHelpers'),
    config = require('../../qbConfig'),
    Utils = require('../../qbUtils'),
    StreamManagement = require('../../plugins/streamManagement');

var unsupportedError = 'This function isn\'t supported outside of the browser (...yet)';

var XMPP;

/** create StropheJS or NodeXMPP connection object */
if (Utils.getEnv().browser) {
    var Connection = require('../../qbStrophe');

    Strophe.addNamespace('CARBONS', chatUtils.MARKERS.CARBONS);
    Strophe.addNamespace('CHAT_MARKERS', chatUtils.MARKERS.CHAT);
    Strophe.addNamespace('PRIVACY_LIST', chatUtils.MARKERS.PRIVACY);
    Strophe.addNamespace('CHAT_STATES', chatUtils.MARKERS.STATES);
} else if (Utils.getEnv().nativescript) {
    XMPP = require('nativescript-xmpp-client');
} else if (Utils.getEnv().node) {
    XMPP = require('node-xmpp-client');
}


function ChatProxy(service) {
    var self = this;
    var originSendFunction;

    self.webrtcSignalingProcessor = null;

    /**
     * Browser env.
     * Uses by Strophe
     */
    if (Utils.getEnv().browser) {
        // strophe js
        self.connection = Connection();

        /** Add extension methods to track handlers for removal on reconnect */
        self.connection.XHandlerReferences = [];
        self.connection.XAddTrackedHandler = function (handler, ns, name, type, id, from, options) {
            self.connection.XHandlerReferences.push(self.connection.addHandler(handler, ns, name, type, id, from, options));
        };
        self.connection.XDeleteHandlers = function () {
            while (self.connection.XHandlerReferences.length) {
                self.connection.deleteHandler(self.connection.XHandlerReferences.pop());
            }
        };

        originSendFunction = self.connection.send;
        self.connection.send = function (stanza) {
            if (!self.connection.connected) {
                throw new chatUtils.ChatNotConnectedError('Chat is not connected');
            }
            originSendFunction.call(self.connection, stanza);
        };
    } else {
        // nativescript-xmpp-client
        if (Utils.getEnv().nativescript) {
            self.Client = new XMPP.Client({
                'websocket': {
                    'url': config.chatProtocol.websocket
                },
                'autostart': false
            });
            // node-xmpp-client
        } else if (Utils.getEnv().node) {
            self.Client = new XMPP({
                'autostart': false
            });
        }

        // override 'send' function to add some logs
        originSendFunction = self.Client.send;

        self.Client.send = function (stanza) {
            Utils.QBLog('[QBChat]', 'SENT:', stanza.toString());
            originSendFunction.call(self.Client, stanza);
        };

        self.nodeStanzasCallbacks = {};
    }

    this.service = service;

    // Check the chat connection (return true/false)
    this.isConnected = false;
    // Check the chat connecting state (return true/false)
    this._isConnecting = false;
    this._isLogout = false;

    this._checkConnectionTimer = undefined;
    this._checkConnectionPingTimer = undefined;
    this._chatPingFailedCounter = 0;
    this._onlineStatus = true;
    this._checkExpiredSessionTimer = undefined;
    this._sessionHasExpired = false;
    this._pings = {};
    //
    this.helpers = new Helpers();
    //
    var options = {
        service: service,
        helpers: self.helpers,
        stropheClient: self.connection,
        xmppClient: self.Client,
        nodeStanzasCallbacks: self.nodeStanzasCallbacks
    };

    this.roster = new RosterProxy(options);
    this.privacylist = new PrivacyListProxy(options);
    this.muc = new MucProxy(options);
    //
    this.chatUtils = chatUtils;

    if (config.streamManagement.enable) {
        if (config.chatProtocol.active === 2) {
            this.streamManagement = new StreamManagement(config.streamManagement);
            self._sentMessageCallback = function (messageLost, messageSent) {
                if (typeof self.onSentMessageCallback === 'function') {
                    if (messageSent) {
                        self.onSentMessageCallback(null, messageSent);
                    } else {
                        self.onSentMessageCallback(messageLost);
                    }
                }
            };
        } else {
            Utils.QBLog('[QBChat] StreamManagement:', 'BOSH protocol doesn\'t support stream management. Set WebSocket as the "chatProtocol" parameter to use this functionality. https://quickblox.com/developers/Javascript#Configuration');
        }
    }

    /**
     * User's callbacks (listener-functions):
     * - onMessageListener (userId, message)
     * - onMessageErrorListener (messageId, error)
     * - onSentMessageCallback (messageLost, messageSent)
     * - onMessageTypingListener (isTyping, userId, dialogId)
     * - onDeliveredStatusListener (messageId, dialogId, userId);
     * - onReadStatusListener (messageId, dialogId, userId);
     * - onSystemMessageListener (message)
     * - onKickOccupant(dialogId, initiatorUserId)
     * - onJoinOccupant(dialogId, userId)
     * - onLeaveOccupant(dialogId, userId)
     * - onContactListListener (userId, type)
     * - onSubscribeListener (userId)
     * - onConfirmSubscribeListener (userId)
     * - onRejectSubscribeListener (userId)
     * - onLastUserActivityListener (userId, seconds)
     * - onDisconnectedListener
     * - onReconnectListener
     * - onSessionExpiredListener
     */

    /**
     * You need to set onMessageListener function, to get messages. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Create_new_dialog More info.}
     * @function onMessageListener
     * @memberOf QB.chat
     * @param {Number} userId - Sender id
     * @param {Object} message - The message model object
     **/

    /**
     * Blocked entities receive an error when try to chat with a user in a 1-1 chat and receivie nothing in a group chat. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Blocked_user_attempts_to_communicate_with_user More info.}
     * @function onMessageErrorListener
     * @memberOf QB.chat
     * @param {Number} messageId - The message id
     * @param {Object} error - The error object
     **/

    /**
     * This feature defines an approach for ensuring is the message delivered to the server. This feature is unabled by default. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Sent_message More info.}
     * @function onSentMessageCallback
     * @memberOf QB.chat
     * @param {Object} messageLost - The lost message model object (Fail)
     * @param {Object} messageSent - The sent message model object (Success)
     **/

    /**
     * Show typing status in chat or groupchat. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Typing_status More info.}
     * @function onMessageTypingListener
     * @memberOf QB.chat
     * @param {Boolean} isTyping - Typing Status (true - typing, false - stop typing)
     * @param {Number} userId - Typing user id
     * @param {String} dialogId - The dialog id
     **/

    /**
     * Receive delivery confirmations {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Delivered_status More info.}
     * @function onDeliveredStatusListener
     * @memberOf QB.chat
     * @param {String} messageId - Delivered message id
     * @param {String} dialogId - The dialog id
     * @param {Number} userId - User id
     **/

    /**
     * You can manage 'read' notifications in chat. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Read_status More info.}
     * @function onReadStatusListener
     * @memberOf QB.chat
     * @param {String} messageId - Read message id
     * @param {String} dialogId - The dialog id
     * @param {Number} userId - User Id
     **/

    /**
     * These messages work over separated channel and won't be mixed with the regular chat messages. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#System_notifications More info.}
     * @function onSystemMessageListener
     * @memberOf QB.chat
     * @param {Object} message - The system message model object. Always have type: 'headline'
     **/

    /**
     * You will receive this callback when you are in group chat dialog(joined) and other user (chat dialog's creator) removed you from occupants.
     * @function onKickOccupant
     * @memberOf QB.chat
     * @param {String} dialogId - An id of chat dialog where you was kicked from.
     * @param {Number} initiatorUserId - An id of user who has kicked you.
     **/

    /**
     * You will receive this callback when some user joined group chat dialog you are in.
     * @function onJoinOccupant
     * @memberOf QB.chat
     * @param {String} dialogId - An id of chat dialog that user joined.
     * @param {Number} userId - An id of user who joined chat dialog.
     **/

    /**
     * You will receive this callback when some user left group chat dialog you are in.
     * @function onLeaveOccupant
     * @memberOf QB.chat
     * @param {String} dialogId - An id of chat dialog that user left.
     * @param {Number} userId - An id of user who left chat dialog.
     **/

    /**
     * Receive user status (online / offline). {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Roster_callbacks More info.}
     * @function onContactListListener
     * @memberOf QB.chat
     * @param {Number} userId - The sender ID
     * @param {String} type - If user leave the chat, type will be 'unavailable'
     **/

    /**
     * Receive subscription request. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Roster_callbacks More info.}
     * @function onSubscribeListener
     * @memberOf QB.chat
     * @param {Number} userId - The sender ID
     **/

    /**
     * Receive confirm request. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Roster_callbacks More info.}
     * @function onConfirmSubscribeListener
     * @memberOf QB.chat
     * @param {Number} userId - The sender ID
     **/

    /**
     * Receive reject request. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Roster_callbacks More info.}
     * @function onRejectSubscribeListener
     * @memberOf QB.chat
     * @param {Number} userId - The sender ID
     **/

    /**
     * Receive user's last activity (time ago). {@link https://xmpp.org/extensions/xep-0012.html More info.}
     * @function onLastUserActivityListener
     * @memberOf QB.chat
     * @param {Number} userId - The user's ID which last activity time we receive
     * @param {Number} seconds - Time ago (last activity in seconds or 0 if user online or undefined if user never registered in chat)
     */

    /**
     * Run after disconnect from chat. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Logout_from_Chat More info.}
     * @function onDisconnectedListener
     * @memberOf QB.chat
     **/

    /**
     * By default Javascript SDK reconnects automatically when connection to server is lost. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Reconnection More info.}
     * @function onReconnectListener
     * @memberOf QB.chat
     **/


    this._onMessage = function (stanza) {
        var from = chatUtils.getAttr(stanza, 'from'),
            to = chatUtils.getAttr(stanza, 'to'),
            type = chatUtils.getAttr(stanza, 'type'),
            messageId = chatUtils.getAttr(stanza, 'id'),
            markable = chatUtils.getElement(stanza, 'markable'),
            delivered = chatUtils.getElement(stanza, 'received'),
            read = chatUtils.getElement(stanza, 'displayed'),
            composing = chatUtils.getElement(stanza, 'composing'),
            paused = chatUtils.getElement(stanza, 'paused'),
            invite = chatUtils.getElement(stanza, 'invite'),
            delay = chatUtils.getElement(stanza, 'delay'),
            extraParams = chatUtils.getElement(stanza, 'extraParams'),
            bodyContent = chatUtils.getElementText(stanza, 'body'),
            forwarded = chatUtils.getElement(stanza, 'forwarded'),
            extraParamsParsed,
            recipientId,
            recipient,
            jid;

        if (Utils.getEnv().browser) {
            recipient = stanza.querySelector('forwarded') ? stanza.querySelector('forwarded').querySelector('message').getAttribute('to') : null;

            jid = self.connection.jid;
        } else {
            var forwardedMessage = forwarded ? chatUtils.getElement(forwarded, 'message') : null;
            recipient = forwardedMessage ? chatUtils.getAttr(forwardedMessage, 'to') : null;

            jid = self.Client.options.jid.user;
        }

        recipientId = recipient ? self.helpers.getIdFromNode(recipient) : null;

        var dialogId = type === 'groupchat' ? self.helpers.getDialogIdFromNode(from) : null,
            userId = type === 'groupchat' ? self.helpers.getIdFromResource(from) : self.helpers.getIdFromNode(from),
            marker = delivered || read || null;

        // ignore invite messages from MUC
        if (invite) return true;

        if (extraParams) {
            extraParamsParsed = chatUtils.parseExtraParams(extraParams);

            if (extraParamsParsed.dialogId) {
                dialogId = extraParamsParsed.dialogId;
            }
        }

        if (composing || paused) {
            if (typeof self.onMessageTypingListener === 'function' && (type === 'chat' || type === 'groupchat' || !delay)) {
                Utils.safeCallbackCall(self.onMessageTypingListener, !!composing, userId, dialogId);
            }

            return true;
        }

        if (marker) {
            if (delivered) {
                if (typeof self.onDeliveredStatusListener === 'function' && type === 'chat') {
                    Utils.safeCallbackCall(self.onDeliveredStatusListener, chatUtils.getAttr(delivered, 'id'), dialogId, userId);
                }
            } else {
                if (typeof self.onReadStatusListener === 'function' && type === 'chat') {
                    Utils.safeCallbackCall(self.onReadStatusListener, chatUtils.getAttr(read, 'id'), dialogId, userId);
                }
            }

            return true;
        }

        // autosend 'received' status (ignore messages from yourself)
        if (markable && userId != self.helpers.getIdFromNode(jid)) {
            var autoSendReceiveStatusParams = {
                messageId: messageId,
                userId: userId,
                dialogId: dialogId
            };

            self.sendDeliveredStatus(autoSendReceiveStatusParams);
        }

        var message = {
            id: messageId,
            dialog_id: dialogId,
            recipient_id: recipientId,
            type: type,
            body: bodyContent,
            extension: extraParamsParsed ? extraParamsParsed.extension : null,
            delay: delay
        };

        if (markable) {
            message.markable = 1;
        }

        if (typeof self.onMessageListener === 'function' && (type === 'chat' || type === 'groupchat')) {
            Utils.safeCallbackCall(self.onMessageListener, userId, message);
        }

        // we must return true to keep the handler alive
        // returning false would remove it after it finishes
        return true;
    };

    this._onPresence = function (stanza) {
        var from = chatUtils.getAttr(stanza, 'from'),
            to = chatUtils.getAttr(stanza, 'to'),
            id = chatUtils.getAttr(stanza, 'id'),
            type = chatUtils.getAttr(stanza, 'type'),
            currentUserId = self.helpers.getIdFromNode(self.helpers.userCurrentJid(Utils.getEnv().browser ? self.connection : self.Client)),
            x = chatUtils.getElement(stanza, 'x'),
            xXMLNS, status, statusCode, dialogId, userId;

        if (x) {
            xXMLNS = chatUtils.getAttr(x, 'xmlns');
            status = chatUtils.getElement(x, 'status');
            if (status) {
                statusCode = chatUtils.getAttr(status, 'code');
            }
        }

        // MUC presences go here
        if (xXMLNS && xXMLNS == "http://jabber.org/protocol/muc#user") {
            dialogId = self.helpers.getDialogIdFromNode(from);
            userId = self.helpers.getUserIdFromRoomJid(from);

            // KICK from dialog event
            if (status && statusCode == "301") {
                if (typeof self.onKickOccupant === 'function') {
                    var actorElement = chatUtils.getElement(chatUtils.getElement(x, 'item'), 'actor');
                    var initiatorUserJid = chatUtils.getAttr(actorElement, 'jid');
                    Utils.safeCallbackCall(self.onKickOccupant,
                        dialogId,
                        self.helpers.getIdFromNode(initiatorUserJid));
                }

                delete self.muc.joinedRooms[self.helpers.getRoomJidFromRoomFullJid(from)];

                return true;

                // Occupants JOIN/LEAVE events
            } else if (!status) {
                if (userId != currentUserId) {
                    // Leave
                    if (type && type === 'unavailable') {
                        if (typeof self.onLeaveOccupant === 'function') {
                            Utils.safeCallbackCall(self.onLeaveOccupant, dialogId, parseInt(userId));
                        }
                        return true;
                        // Join
                    } else {
                        if (typeof self.onJoinOccupant === 'function') {
                            Utils.safeCallbackCall(self.onJoinOccupant, dialogId, parseInt(userId));
                        }
                        return true;
                    }

                }
            }
        }

        if (!Utils.getEnv().browser) {
            /** MUC */
            if (xXMLNS) {
                if (xXMLNS == "http://jabber.org/protocol/muc#user") {
                    /**
                     * if you make 'leave' from dialog
                     * stanza will be contains type="unavailable"
                     */
                    if (type && type === 'unavailable') {
                        /** LEAVE from dialog */
                        if (status && statusCode == "110") {
                            if (typeof self.nodeStanzasCallbacks['muc:leave'] === 'function') {
                                Utils.safeCallbackCall(self.nodeStanzasCallbacks['muc:leave'], null);
                            }
                        }

                        return true;
                    }

                    /** JOIN to dialog success */
                    if (id.endsWith(":join") && status && statusCode == "110") {
                        if (typeof self.nodeStanzasCallbacks[id] === 'function') {
                            self.nodeStanzasCallbacks[id](stanza);
                        }

                        return true;
                    }

                    // an error
                } else if (type && type === 'error' && xXMLNS == "http://jabber.org/protocol/muc") {
                    /** JOIN to dialog error */
                    if (id.endsWith(":join")) {
                        if (typeof self.nodeStanzasCallbacks[id] === 'function') {
                            self.nodeStanzasCallbacks[id](stanza);
                        }
                    }

                    return true;
                }
            }
        }


        // ROSTER presences go here

        userId = self.helpers.getIdFromNode(from);

        if (!type) {
            if (typeof self.onContactListListener === 'function' && self.roster.contacts[userId] && self.roster.contacts[userId].subscription !== 'none') {
                Utils.safeCallbackCall(self.onContactListListener, userId);
            }
        } else {
            switch (type) {
                case 'subscribe':
                    if (self.roster.contacts[userId] && self.roster.contacts[userId].subscription === 'to') {
                        self.roster.contacts[userId] = {
                            subscription: 'both',
                            ask: null
                        };

                        self.roster._sendSubscriptionPresence({
                            jid: from,
                            type: 'subscribed'
                        });
                    } else {
                        if (typeof self.onSubscribeListener === 'function') {
                            Utils.safeCallbackCall(self.onSubscribeListener, userId);
                        }
                    }
                    break;
                case 'subscribed':
                    if (self.roster.contacts[userId] && self.roster.contacts[userId].subscription === 'from') {
                        self.roster.contacts[userId] = {
                            subscription: 'both',
                            ask: null
                        };
                    } else {
                        self.roster.contacts[userId] = {
                            subscription: 'to',
                            ask: null
                        };

                        if (typeof self.onConfirmSubscribeListener === 'function') {
                            Utils.safeCallbackCall(self.onConfirmSubscribeListener, userId);
                        }
                    }
                    break;
                case 'unsubscribed':
                    self.roster.contacts[userId] = {
                        subscription: 'none',
                        ask: null
                    };

                    if (typeof self.onRejectSubscribeListener === 'function') {
                        Utils.safeCallbackCall(self.onRejectSubscribeListener, userId);
                    }

                    break;
                case 'unsubscribe':
                    self.roster.contacts[userId] = {
                        subscription: 'to',
                        ask: null
                    };

                    break;
                case 'unavailable':
                    if (typeof self.onContactListListener === 'function' && self.roster.contacts[userId] && self.roster.contacts[userId].subscription !== 'none') {
                        Utils.safeCallbackCall(self.onContactListListener, userId, type);
                    }

                    // send initial presence if one of client (instance) goes offline
                    if (userId === currentUserId) {
                        if (Utils.getEnv().browser) {
                            self.connection.send($pres());
                        } else {
                            self.Client.send(chatUtils.createStanza(XMPP.Stanza, null, 'presence'));
                        }
                    }

                    break;
            }
        }

        // we must return true to keep the handler alive
        // returning false would remove it after it finishes
        return true;
    };

    this._onIQ = function (stanza) {
        var stanzaId = chatUtils.getAttr(stanza, 'id');
        var isLastActivity = stanzaId.indexOf('lastActivity') > -1;
        var isPong = stanzaId.indexOf('ping') > -1;
        var ping = chatUtils.getElement(stanza, 'ping');
        var type = chatUtils.getAttr(stanza, 'type');
        var from = chatUtils.getAttr(stanza, 'from');
        var userId = from ?
            self.helpers.getIdFromNode(from) :
            null;

        if (typeof self.onLastUserActivityListener === 'function' && isLastActivity) {
            var query = chatUtils.getElement(stanza, 'query'),
                error = chatUtils.getElement(stanza, 'error'),
                seconds = error ? undefined : +chatUtils.getAttr(query, 'seconds');

            Utils.safeCallbackCall(self.onLastUserActivityListener, userId, seconds);
        }
        if ((ping || isPong) && type) {
            if (type === 'get' && ping && self.isConnected) {
                // pong
                var builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;
                var pongParams = {
                    from: self.helpers.getUserCurrentJid(),
                    id: stanzaId,
                    to: from,
                    type: 'result'
                };
                var pongStanza = chatUtils.createStanza(builder, pongParams, 'iq');
                if (Utils.getEnv().browser) {
                    self.connection.send(pongStanza);
                } else {
                    self.Client.send(pongStanza);
                }
            } else {
                var pingRequest = self._pings[stanzaId];
                if (pingRequest) {
                    if (pingRequest.callback) {
                        pingRequest.callback(null);
                    }
                    if (pingRequest.interval) {
                        clearInterval(pingRequest.interval);
                    }
                    self._pings[stanzaId] = undefined;
                    delete self._pings[stanzaId];
                }
            }
        }

        if (!Utils.getEnv().browser) {
            if (self.nodeStanzasCallbacks[stanzaId]) {
                Utils.safeCallbackCall(self.nodeStanzasCallbacks[stanzaId], stanza);
                delete self.nodeStanzasCallbacks[stanzaId];
            }
        }

        return true;
    };

    this._onSystemMessageListener = function (stanza) {
        var from = chatUtils.getAttr(stanza, 'from'),
            to = chatUtils.getAttr(stanza, 'to'),
            messageId = chatUtils.getAttr(stanza, 'id'),
            extraParams = chatUtils.getElement(stanza, 'extraParams'),
            userId = self.helpers.getIdFromNode(from),
            delay = chatUtils.getElement(stanza, 'delay'),
            moduleIdentifier = chatUtils.getElementText(extraParams, 'moduleIdentifier'),
            bodyContent = chatUtils.getElementText(stanza, 'body'),
            extraParamsParsed = chatUtils.parseExtraParams(extraParams),
            message;

        if (moduleIdentifier === 'SystemNotifications' && typeof self.onSystemMessageListener === 'function') {
            message = {
                id: messageId,
                userId: userId,
                body: bodyContent,
                extension: extraParamsParsed.extension
            };

            Utils.safeCallbackCall(self.onSystemMessageListener, message);
        } else if (self.webrtcSignalingProcessor && !delay && moduleIdentifier === 'WebRTCVideoChat') {
            self.webrtcSignalingProcessor._onMessage(from, extraParams, delay, userId, extraParamsParsed.extension);
        }

        /**
         * we must return true to keep the handler alive
         * returning false would remove it after it finishes
         */
        return true;
    };

    this._onMessageErrorListener = function (stanza) {
        // <error code="503" type="cancel">
        //   <service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
        //   <text xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" xml:lang="en">Service not available.</text>
        // </error>

        var messageId = chatUtils.getAttr(stanza, 'id');
        var error = chatUtils.getErrorFromXMLNode(stanza);

        // fire 'onMessageErrorListener'
        //
        if (typeof self.onMessageErrorListener === 'function') {
            Utils.safeCallbackCall(self.onMessageErrorListener, messageId, error);
        }

        // we must return true to keep the handler alive
        // returning false would remove it after it finishes
        return true;
    };
}

/* Chat module: Core
 ----------------------------------------------------------------------------- */
ChatProxy.prototype = {

    /**
     * self.connection to the chat. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Login_to_Chat More info.}
     * @memberof QB.chat
     * @param {Object} params - Connect to the chat parameters
     * @param {Number} params.userId - Connect to the chat by user id (use instead params.email and params.jid)
     * @param {String} params.jid - Connect to the chat by user jid (use instead params.userId and params.email)
     * @param {String} params.email - Connect to the chat by user's email (use instead params.userId and params.jid)
     * @param {String} params.password - The user's password or session token
     * @param {chatConnectCallback} callback - The chatConnectCallback callback
     * */
    connect: function (params, callback) {
        /**
         * This callback Returns error or contact list.
         * @callback chatConnectCallback
         * @param {Object} error - The error object
         * @param {(Object|Boolean)} response - Object of subscribed users (roster) or empty body.
         * */
        Utils.QBLog('[QBChat]', 'Connect with parameters ' + JSON.stringify(params));

        var self = this,
            userJid = chatUtils.buildUserJid(params),
            isInitialConnect = typeof callback === 'function',
            err;

        if (self._isConnecting) {
            err = Utils.getError(422, 'Status.REJECT - The connection is still in the Status.CONNECTING state', 'QBChat');

            if (isInitialConnect) {
                callback(err, null);
            }

            return;
        }

        if (self.isConnected) {
            Utils.QBLog('[QBChat]', 'Status.CONNECTED - You are already connected');

            if (isInitialConnect) {
                callback(null, self.roster.contacts);
            }

            return;
        }

        self._isConnecting = true;
        self._isLogout = false;

        /** Connect for browser env. */
        if (Utils.getEnv().browser) {
            Utils.QBLog('[QBChat]', '!!---Browser env - connected--!!');

            self.connection.connect(userJid, params.password, function (status) {
                Utils.QBLog('[QBChat]', 'self.connection.connect called with status ' + status);
                switch (status) {
                    case Strophe.Status.ERROR:
                        self.isConnected = false;
                        self._isConnecting = false;

                        err = Utils.getError(422, 'Status.ERROR - An error has occurred', 'QBChat');

                        if (isInitialConnect) {
                            callback(err, null);
                        }

                        break;
                    case Strophe.Status.CONNFAIL:
                        self.isConnected = false;
                        self._isConnecting = false;

                        err = Utils.getError(422, 'Status.CONNFAIL - The connection attempt failed', 'QBChat');

                        if (isInitialConnect) {
                            callback(err, null);
                        }

                        break;
                    case Strophe.Status.AUTHENTICATING:
                        Utils.QBLog('[QBChat]', 'Status.AUTHENTICATING');

                        break;
                    case Strophe.Status.AUTHFAIL:
                        self.isConnected = false;
                        self._isConnecting = false;

                        err = Utils.getError(401, 'Status.AUTHFAIL - The authentication attempt failed', 'QBChat');

                        if (isInitialConnect) {
                            callback(err, null);
                        }

                        if (!self.isConnected && typeof self.onReconnectFailedListener === 'function') {
                            Utils.safeCallbackCall(self.onReconnectFailedListener, err);
                        }

                        break;
                    case Strophe.Status.CONNECTING:
                        Utils.QBLog('[QBChat]', 'Status.CONNECTING', '(Chat Protocol - ' + (config.chatProtocol.active === 1 ? 'BOSH' : 'WebSocket' + ')'));

                        break;
                    case Strophe.Status.CONNECTED:
                        // Remove any handlers that might exist from a previous connection via
                        // extension method added to the connection on initialization in qbMain.
                        // NOTE: streamManagement also adds handlers, so do this first.
                        self.connection.XDeleteHandlers();

                        self.connection.XAddTrackedHandler(self._onMessage, null, 'message', 'chat');
                        self.connection.XAddTrackedHandler(self._onMessage, null, 'message', 'groupchat');
                        self.connection.XAddTrackedHandler(self._onPresence, null, 'presence');
                        self.connection.XAddTrackedHandler(self._onIQ, null, 'iq');
                        self.connection.XAddTrackedHandler(self._onSystemMessageListener, null, 'message', 'headline');
                        self.connection.XAddTrackedHandler(self._onMessageErrorListener, null, 'message', 'error');

                        var noTimerId = typeof self._checkConnectionPingTimer === 'undefined';
                        noTimerId = config.pingLocalhostTimeInterval === 0 ? false : noTimerId;

                        if (noTimerId) {
                            Utils.QBLog('[QBChat]', 'Init ping to chat at ', Utils.getCurrentTime());
                            self._checkConnectionPingTimer = setInterval(function () {
                                try {
                                    self.pingchat(function (error) {
                                        if (error) {
                                            Utils.QBLog('[QBChat]',
                                                'Chat Ping: ',
                                                'failed, at ', Utils.getCurrentTime(),
                                                '_chatPingFailedCounter: ', self._chatPingFailedCounter,
                                                ' error: ', error);
                                            self._chatPingFailedCounter += 1;
                                            if (self._chatPingFailedCounter > 6) {
                                                self.isConnected = false;
                                                self._isConnecting = false;
                                                self._chatPingFailedCounter = 0;
                                                self._establishConnection(params);
                                            }
                                        } else {
                                            Utils.QBLog('[QBChat]',
                                                'Chat Ping: ',
                                                'ok, at ', Utils.getCurrentTime(),
                                                '_chatPingFailedCounter: ', self._chatPingFailedCounter);
                                            self._chatPingFailedCounter = 0;
                                        }
                                    });
                                } catch (err) {
                                    Utils.QBLog('[QBChat]',
                                        'Chat Ping: ',
                                        'Exception, at ', Utils.getCurrentTime(),
                                        ', detail info: ', err);
                                }
                            }, config.pingLocalhostTimeInterval * 1000);
                        }

                        if (typeof self.onSessionExpiredListener === 'function') {
                            var noExpiredSessionTimerId = typeof self._checkExpiredSessionTimer === 'undefined';
                            if (noExpiredSessionTimerId) {
                                Utils.QBLog('[QBChat]', 'Init timer for check session expired at ', ((new Date()).toTimeString().split(' ')[0]));
                                self._checkExpiredSessionTimer = setInterval(function () {
                                    var timeNow = new Date();
                                    if (typeof config.qbTokenExpirationDate !== 'undefined') {
                                        var timeLag = Math.round((timeNow.getTime() - config.qbTokenExpirationDate.getTime()) / (1000 * 60));
                                        if (timeLag >= 0) {
                                            self._sessionHasExpired = true;
                                            Utils.safeCallbackCall(self.onSessionExpiredListener, null);
                                        }
                                    }
                                    // TODO: in task [CROS-823], may by need to change 5 * 1000 to config.liveSessionInterval * 1000
                                }, 5 * 1000);

                            }
                        }

                        self._postConnectActions(function (roster) {
                            callback(null, roster);
                        }, isInitialConnect);

                        break;
                    case Strophe.Status.DISCONNECTING:
                        Utils.QBLog('[QBChat]', 'Status.DISCONNECTING');
                        break;
                    case Strophe.Status.DISCONNECTED:
                        Utils.QBLog('[QBChat]', 'Status.DISCONNECTED at ' + chatUtils.getLocalTime());

                        // fire 'onDisconnectedListener' only once
                        if (self.isConnected && typeof self.onDisconnectedListener === 'function') {
                            Utils.safeCallbackCall(self.onDisconnectedListener);
                        }

                        self.isConnected = false;
                        self._isConnecting = false;
                        self.connection.reset();

                        // reconnect to chat and enable check connection
                        self._establishConnection(params);

                        break;
                    case Strophe.Status.ATTACHED:
                        Utils.QBLog('[QBChat]', 'Status.ATTACHED');
                        break;
                }
            });
        }

        /** connect for node */
        if (!Utils.getEnv().browser) {
            Utils.QBLog('[QBChat]', '!!--call branch code connect for node--!!');
            // Remove all connection handlers exist from a previous connection
            self.Client.removeAllListeners();

            self.Client.on('connect', function () {
                Utils.QBLog('[QBChat]', 'Status.CONNECTING', '(Chat Protocol - ' + (config.chatProtocol.active === 1 ? 'BOSH' : 'WebSocket' + ')'));
            });

            self.Client.on('auth', function () {
                Utils.QBLog('[QBChat]', 'Status.AUTHENTICATING');
            });

            self.Client.on('online', function () {
                self._postConnectActions(function (roster) {
                    callback(null, roster);
                }, isInitialConnect);
            });

            self.Client.on('stanza', function (stanza) {
                Utils.QBLog('[QBChat] RECV:', stanza.toString());
                /**
                 * Detect typeof incoming stanza
                 * and fire the Listener
                 */
                if (stanza.is('presence')) {
                    self._onPresence(stanza);
                } else if (stanza.is('iq')) {
                    self._onIQ(stanza);
                } else if (stanza.is('message')) {
                    if (stanza.attrs.type === 'headline') {
                        self._onSystemMessageListener(stanza);
                    } else if (stanza.attrs.type === 'error') {
                        self._onMessageErrorListener(stanza);
                    } else {
                        self._onMessage(stanza);
                    }
                }
            });

            self.Client.on('disconnect', function () {
                Utils.QBLog('[QBChat]', 'Status.DISCONNECTED - ' + chatUtils.getLocalTime());

                if (typeof self.onDisconnectedListener === 'function') {
                    Utils.safeCallbackCall(self.onDisconnectedListener);
                }

                self.isConnected = false;
                self._isConnecting = false;

                // reconnect to chat and enable check connection
                self._establishConnection(params);
            });

            self.Client.on('error', function () {
                Utils.QBLog('[QBChat]', 'Status.ERROR - ' + chatUtils.getLocalTime());
                err = Utils.getError(422, 'Status.ERROR - An error has occurred', 'QBChat');

                if (isInitialConnect) {
                    callback(err, null);
                }

                self.isConnected = false;
                self._isConnecting = false;
            });

            self.Client.on('end', function () {
                self.Client.removeAllListeners();
            });

            self.Client.options.jid = userJid;
            self.Client.options.password = params.password;
            self.Client.connect();
        }
    },

    /**
     * Actions after the connection is established
     *
     * - enable stream management (the configuration setting);
     * - save user's JID;
     * - enable carbons;
     * - get and storage the user's roster (if the initial connect);
     * - recover the joined rooms and fire 'onReconnectListener' (if the reconnect);
     * - send initial presence to the chat server.
     */
    _postConnectActions: function (callback, isInitialConnect) {
        Utils.QBLog('[QBChat]', 'Status.CONNECTED at ' + chatUtils.getLocalTime());

        var self = this;
        var isBrowser = Utils.getEnv().browser;
        var xmppClient = isBrowser ? self.connection : self.Client;
        var presence = isBrowser ?
            $pres() :
            chatUtils.createStanza(XMPP.Stanza, null, 'presence');

        if (config.streamManagement.enable && config.chatProtocol.active === 2) {
            self.streamManagement.enable(self.connection, null);
            self.streamManagement.sentMessageCallback = self._sentMessageCallback;
        }

        self.helpers.setUserCurrentJid(self.helpers.userCurrentJid(xmppClient));

        self.isConnected = true;
        self._isConnecting = false;
        self._sessionHasExpired = false;

        self._enableCarbons();

        if (isInitialConnect) {
            self.roster.get(function (contacts) {
                xmppClient.send(presence);

                self.roster.contacts = contacts;
                callback(self.roster.contacts);
            });
        } else {
            var rooms = Object.keys(self.muc.joinedRooms);

            xmppClient.send(presence);

            Utils.QBLog('[QBChat]', 'Re-joining ' + rooms.length + " rooms...");

            for (var i = 0, len = rooms.length; i < len; i++) {
                self.muc.join(rooms[i]);
            }

            if (typeof self.onReconnectListener === 'function') {
                Utils.safeCallbackCall(self.onReconnectListener);
            }
        }
    },

    _establishConnection: function (params) {
        var self = this;
        Utils.QBLog('[QBChat]', '_establishConnection called');
        if (self._isLogout || self._checkConnectionTimer) {
            Utils.QBLog('[QBChat]', '_establishConnection return');
            return;
        }

        var _connect = function () {
            Utils.QBLog('[QBChat]', 'call _connect() in _establishConnection ');
            if (!self.isConnected && !self._isConnecting && !self._sessionHasExpired) {
                Utils.QBLog('[QBChat]', 'call connect() again in _establishConnection ');
                self.connect(params);
            } else {
                Utils.QBLog('[QBChat]', 'stop timer in _establishConnection ');
                clearInterval(self._checkConnectionTimer);
                self._checkConnectionTimer = undefined;
            }
        };

        _connect();

        self._checkConnectionTimer = setInterval(function () {
            Utils.QBLog('[QBChat]', 'self._checkConnectionTimer called with config.chatReconnectionTimeInterval = ' + config.chatReconnectionTimeInterval);
            _connect();
        }, config.chatReconnectionTimeInterval * 1000);
    },

    reconnect: function () {
        Utils.QBLog('[QBChat]', 'Call reconnect ');
        clearInterval(this._checkConnectionTimer);
        this._checkConnectionTimer = undefined;
        this.muc.joinedRooms = {};
        this.helpers.setUserCurrentJid('');

        if (Utils.getEnv().browser) {
            this.connection.flush();
            this.connection.disconnect();
        } else {
            this.Client.end();
        }
    },

    /**
     * Send message to 1 to 1 or group dialog. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Chat_in_dialog More info.}
     * @memberof QB.chat
     * @param {String | Number} jid_or_user_id - Use opponent id or jid for 1 to 1 chat, and room jid for group chat.
     * @param {Object} message - The message object.
     * @returns {String} messageId - The current message id (was generated by SDK)
     * */
    send: function (jid_or_user_id, message) {
        Utils.QBLog('[QBChat]', 'Call send ' + JSON.stringify(message));
        var self = this,
            builder = Utils.getEnv().browser ? $msg : XMPP.Stanza;

        var paramsCreateMsg = {
            from: self.helpers.getUserCurrentJid(),
            to: this.helpers.jidOrUserId(jid_or_user_id),
            type: message.type ? message.type : 'chat',
            id: message.id ? message.id : Utils.getBsonObjectId()
        };

        var stanza = chatUtils.createStanza(builder, paramsCreateMsg);

        if (message.body) {
            stanza.c('body', {
                xmlns: chatUtils.MARKERS.CLIENT,
            }).t(message.body).up();
        }

        if (message.markable) {
            stanza.c('markable', {
                xmlns: chatUtils.MARKERS.CHAT
            }).up();
        }

        if (message.extension) {
            stanza.c('extraParams', {
                xmlns: chatUtils.MARKERS.CLIENT
            });

            stanza = chatUtils.filledExtraParams(stanza, message.extension);
        }

        if (Utils.getEnv().browser) {
            if (config.streamManagement.enable) {
                message.id = paramsCreateMsg.id;
                message.jid_or_user_id = jid_or_user_id;
                self.connection.send(stanza, message);
            } else {
                self.connection.send(stanza);
            }
        } else {
            if (config.streamManagement.enable) {
                message.id = paramsCreateMsg.id;
                message.jid_or_user_id = jid_or_user_id;
                self.Client.send(stanza, message);
            } else {
                self.Client.send(stanza);
            }

        }

        return paramsCreateMsg.id;
    },

    /**
     * Send system message (system notification) to 1 to 1 or group dialog. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#System_notifications More info.}
     * @memberof QB.chat
     * @param {String | Number} jid_or_user_id - Use opponent id or jid for 1 to 1 chat, and room jid for group chat.
     * @param {Object} message - The message object.
     * @returns {String} messageId - The current message id (was generated by SDK)
     * */
    sendSystemMessage: function (jid_or_user_id, message) {
        Utils.QBLog('[QBChat]', 'Call sendSystemMessage ' + JSON.stringify(message));
        var self = this,
            builder = Utils.getEnv().browser ? $msg : XMPP.Stanza,
            paramsCreateMsg = {
                type: 'headline',
                id: message.id ? message.id : Utils.getBsonObjectId(),
                to: this.helpers.jidOrUserId(jid_or_user_id)
            };

        var stanza = chatUtils.createStanza(builder, paramsCreateMsg);

        if (message.body) {
            stanza.c('body', {
                xmlns: chatUtils.MARKERS.CLIENT,
            }).t(message.body).up();
        }

        if (Utils.getEnv().browser) {
            // custom parameters
            if (message.extension) {
                stanza.c('extraParams', {
                    xmlns: chatUtils.MARKERS.CLIENT
                }).c('moduleIdentifier').t('SystemNotifications').up();

                stanza = chatUtils.filledExtraParams(stanza, message.extension);
            }

            self.connection.send(stanza);
        } else {
            if (message.extension) {
                stanza.c('extraParams', {
                    xmlns: chatUtils.MARKERS.CLIENT
                }).c('moduleIdentifier').t('SystemNotifications');

                stanza = chatUtils.filledExtraParams(stanza, message.extension);
            }

            self.Client.send(stanza);
        }

        return paramsCreateMsg.id;
    },

    /**
     * Send is typing status. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Typing_status More info.}
     * @memberof QB.chat
     * @param {String | Number} jid_or_user_id - Use opponent id or jid for 1 to 1 chat, and room jid for group chat.
     * */
    sendIsTypingStatus: function (jid_or_user_id) {
        Utils.QBLog('[QBChat]', 'Call sendIsTypingStatus ');
        var self = this,
            stanzaParams = {
                from: self.helpers.getUserCurrentJid(),
                to: this.helpers.jidOrUserId(jid_or_user_id),
                type: this.helpers.typeChat(jid_or_user_id)
            },
            builder = Utils.getEnv().browser ? $msg : XMPP.Stanza;

        var stanza = chatUtils.createStanza(builder, stanzaParams);

        stanza.c('composing', {
            xmlns: chatUtils.MARKERS.STATES
        });

        if (Utils.getEnv().browser) {
            self.connection.send(stanza);
        } else {
            self.Client.send(stanza);
        }
    },

    /**
     * Send is stop typing status. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Typing_status More info.}
     * @memberof QB.chat
     * @param {String | Number} jid_or_user_id - Use opponent id or jid for 1 to 1 chat, and room jid for group chat.
     * */
    sendIsStopTypingStatus: function (jid_or_user_id) {
        Utils.QBLog('[QBChat]', 'Call sendIsStopTypingStatus ');
        var self = this,
            stanzaParams = {
                from: self.helpers.getUserCurrentJid(),
                to: this.helpers.jidOrUserId(jid_or_user_id),
                type: this.helpers.typeChat(jid_or_user_id)
            },
            builder = Utils.getEnv().browser ? $msg : XMPP.Stanza;

        var stanza = chatUtils.createStanza(builder, stanzaParams);

        stanza.c('paused', {
            xmlns: chatUtils.MARKERS.STATES
        });

        if (Utils.getEnv().browser) {
            self.connection.send(stanza);
        } else {
            self.Client.send(stanza);
        }
    },

    /**
     * Send is delivered status. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Delivered_status More info.}
     * @memberof QB.chats
     * @param {Object} params - Object of parameters
     * @param {Number} params.userId - The receiver id
     * @param {Number} params.messageId - The delivered message id
     * @param {Number} params.dialogId - The dialog id
     * */
    sendDeliveredStatus: function (params) {
        Utils.QBLog('[QBChat]', 'Call sendDeliveredStatus ');
        var self = this,
            stanzaParams = {
                type: 'chat',
                from: self.helpers.getUserCurrentJid(),
                id: Utils.getBsonObjectId(),
                to: this.helpers.jidOrUserId(params.userId)
            },
            builder = Utils.getEnv().browser ? $msg : XMPP.Stanza;

        var stanza = chatUtils.createStanza(builder, stanzaParams);

        stanza.c('received', {
            xmlns: chatUtils.MARKERS.MARKERS,
            id: params.messageId
        }).up();

        stanza.c('extraParams', {
            xmlns: chatUtils.MARKERS.CLIENT
        }).c('dialog_id').t(params.dialogId);

        if (Utils.getEnv().browser) {
            self.connection.send(stanza);
        } else {
            self.Client.send(stanza);
        }
    },

    /**
     * Send is read status. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Read_status More info.}
     * @memberof QB.chat
     * @param {Object} params - Object of parameters
     * @param {Number} params.userId - The receiver id
     * @param {Number} params.messageId - The delivered message id
     * @param {Number} params.dialogId - The dialog id
     * */
    sendReadStatus: function (params) {
        Utils.QBLog('[QBChat]', 'Call sendReadStatus ' + JSON.stringify(params));
        var self = this,
            stanzaParams = {
                type: 'chat',
                from: self.helpers.getUserCurrentJid(),
                to: this.helpers.jidOrUserId(params.userId),
                id: Utils.getBsonObjectId()
            },
            builder = Utils.getEnv().browser ? $msg : XMPP.Stanza;

        var stanza = chatUtils.createStanza(builder, stanzaParams);

        stanza.c('displayed', {
            xmlns: chatUtils.MARKERS.MARKERS,
            id: params.messageId
        }).up();

        stanza.c('extraParams', {
            xmlns: chatUtils.MARKERS.CLIENT
        }).c('dialog_id').t(params.dialogId);

        if (Utils.getEnv().browser) {
            self.connection.send(stanza);
        } else {
            self.Client.send(stanza);
        }
    },

    /**
     * Send query to get last user activity by QB.chat.onLastUserActivityListener(userId, seconds). {@link https://xmpp.org/extensions/xep-0012.html More info.}
     * @memberof QB.chat
     * @param {(Number|String)} jid_or_user_id - The user id or jid, that the last activity we want to know
     * */
    getLastUserActivity: function (jid_or_user_id) {
        Utils.QBLog('[QBChat]', 'Call getLastUserActivity ');
        var iqParams,
            builder,
            iq;

        iqParams = {
            'from': this.helpers.getUserCurrentJid(),
            'id': this.helpers.getUniqueId('lastActivity'),
            'to': this.helpers.jidOrUserId(jid_or_user_id),
            'type': 'get'
        };

        builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;

        iq = chatUtils.createStanza(builder, iqParams, 'iq');

        iq.c('query', {
            'xmlns': chatUtils.MARKERS.LAST
        });

        if (Utils.getEnv().browser) {
            this.connection.sendIQ(iq);
        } else {
            this.Client.send(iq);
        }
    },

    pingchat: function (callback) {
        Utils.QBLog('[QBChat]', 'ping chat');
        var self = this;
        var id = this.helpers.getUniqueId('ping');
        var builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;
        var to;
        var _callback;
        var stanza;

        //to = config.endpoints.chat;
        //to = 'http://localhost';
        to = config.endpoints.chat? config.endpoints.chat : 'chat.quickblox.com';
        _callback = callback;

        var iqParams = {
            from: this.helpers.getUserCurrentJid(),
            id: id,
            to: to,
            type: 'get'
        };
        stanza = chatUtils.createStanza(builder, iqParams, 'iq');
        stanza.c('ping', {xmlns: "urn:xmpp:ping"});

        var noAnswer = function () {
            _callback('Chat ping No answer');
            self._pings[id] = undefined;
            delete self._pings[id];
        };
        if (Utils.getEnv().browser) {
            this.connection.send(stanza);
        } else {
            this.Client.send(stanza);
        }
        this._pings[id] = {
            callback: _callback,
            interval: setTimeout(noAnswer, config.pingTimeout * 1000)
        };
        return id;
    },

    ping: function (jid_or_user_id, callback) {
        Utils.QBLog('[QBChat]', 'Call ping ');
        var self = this;
        var id = this.helpers.getUniqueId('ping');
        var builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;
        var to;
        var _callback;
        var stanza;
        if ((typeof jid_or_user_id === 'string' ||
                typeof jid_or_user_id === 'number') &&
            typeof callback === 'function') {
            to = this.helpers.jidOrUserId(jid_or_user_id);
            _callback = callback;
        } else {
            if (typeof jid_or_user_id === 'function' && !callback) {
                to = config.endpoints.chat;
                _callback = jid_or_user_id;
            } else {
                throw new Error('Invalid arguments provided. Either userId/jid (number/string) and callback or only callback should be provided.');
            }
        }

        var iqParams = {
            from: this.helpers.getUserCurrentJid(),
            id: id,
            to: to,
            type: 'get'
        };
        stanza = chatUtils.createStanza(builder, iqParams, 'iq');
        stanza.c('ping', {xmlns: "urn:xmpp:ping"});

        var noAnswer = function () {
            _callback('No answer');
            self._pings[id] = undefined;
            delete self._pings[id];
        };
        if (Utils.getEnv().browser) {
            this.connection.send(stanza);
        } else {
            this.Client.send(stanza);
        }
        this._pings[id] = {
            callback: _callback,
            interval: setTimeout(noAnswer, config.pingTimeout * 1000)
        };
        return id;
    },

    /**
     * Logout from the Chat. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Logout_from_Chat More info.}
     * @memberof QB.chat
     * */
    disconnect: function () {
        Utils.QBLog('[QBChat]', 'Call disconnect ');
        clearInterval(this._checkConnectionTimer);
        clearInterval(this._checkExpiredSessionTimer);
        this._checkConnectionTimer = undefined;
        this._checkExpiredSessionTimer = undefined;
        this.muc.joinedRooms = {};
        this._isLogout = true;
        this.helpers.setUserCurrentJid('');

        if (Utils.getEnv().browser) {
            this.connection.flush();
            this.connection.disconnect();
            if (this._checkConnectionPingTimer !== undefined) {
                Utils.QBLog('[QBChat]', 'Stop ping');
                clearInterval(this._checkConnectionPingTimer);
                this._checkConnectionPingTimer = undefined;
            }
        } else {
            this.Client.end();
        }
    },

    addListener: function (params, callback) {
        Utils.QBLog('[Deprecated!]', 'Avoid using it, this feature will be removed in future version.');

        if (!Utils.getEnv().browser) {
            throw new Error(unsupportedError);
        }

        return this.connection.XAddTrackedHandler(handler, null, params.name || null, params.type || null, params.id || null, params.from || null);

        function handler() {
            callback();
            // if 'false' - a handler will be performed only once
            return params.live !== false;
        }
    },

    deleteListener: function (ref) {
        Utils.QBLog('[Deprecated!]', 'Avoid using it, this feature will be removed in future version.');

        if (!Utils.getEnv().browser) {
            throw new Error(unsupportedError);
        }

        this.connection.deleteHandler(ref);
    },

    /**
     * Carbons XEP [http://xmpp.org/extensions/xep-0280.html]
     */
    _enableCarbons: function (cb) {
        var self = this,
            carbonParams = {
                type: 'set',
                from: self.helpers.getUserCurrentJid(),
                id: chatUtils.getUniqueId('enableCarbons')
            },
            builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;

        var iq = chatUtils.createStanza(builder, carbonParams, 'iq');

        iq.c('enable', {
            xmlns: chatUtils.MARKERS.CARBONS
        });

        if (Utils.getEnv().browser) {
            self.connection.sendIQ(iq);
        } else {
            self.Client.send(iq);
        }
    }
};

/* Chat module: Roster
 *
 * Integration of Roster Items and Presence Subscriptions
 * http://xmpp.org/rfcs/rfc3921.html#int
 * default - Mutual Subscription
 *
 ----------------------------------------------------------------------------- */
/**
 * @namespace QB.chat.roster
 **/
function RosterProxy(options) {
    this.service = options.service;
    this.helpers = options.helpers;
    this.connection = options.stropheClient;
    this.Client = options.xmppClient;
    this.nodeStanzasCallbacks = options.nodeStanzasCallbacks;
    //
    this.contacts = {};
}

RosterProxy.prototype = {

    /**
     * Receive contact list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Contact_List More info.}
     * @memberof QB.chat.roster
     * @param {getRosterCallback} callback - The callback function.
     * */
    get: function (callback) {
        /**
         * This callback Return contact list.
         * @callback getRosterCallback
         * @param {Object} roster - Object of subscribed users.
         * */

        var self = this,
            items, userId, contacts = {},
            iqParams = {
                'type': 'get',
                'from': self.helpers.getUserCurrentJid(),
                'id': chatUtils.getUniqueId('getRoster')
            },
            builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;

        var iq = chatUtils.createStanza(builder, iqParams, 'iq');

        function _getItems(stanza) {
            if (Utils.getEnv().browser) {
                return stanza.getElementsByTagName('item');
            } else {
                return stanza.getChild('query').children;
            }
        }

        function _callbackWrap(stanza) {
            var items = _getItems(stanza);
            for (var i = 0, len = items.length; i < len; i++) {
                var userId = self.helpers.getIdFromNode(chatUtils.getAttr(items[i], 'jid')),
                    ask = chatUtils.getAttr(items[i], 'ask'),
                    subscription = chatUtils.getAttr(items[i], 'subscription');

                contacts[userId] = {
                    subscription: subscription,
                    ask: ask || null
                };
            }

            callback(contacts);
        }

        iq.c('query', {
            xmlns: chatUtils.MARKERS.ROSTER
        });

        if (Utils.getEnv().browser) {
            self.connection.sendIQ(iq, _callbackWrap);
        } else {
            self.nodeStanzasCallbacks[iqParams.id] = _callbackWrap;
            self.Client.send(iq);
        }
    },

    /**
     * Add users to contact list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Add_users More info.}
     * @memberof QB.chat.roster
     * @param {String | Number} jidOrUserId - Use opponent id for 1 to 1 chat, and jid for group chat.
     * @param {addRosterCallback} callback - The callback function.
     * */
    add: function (jidOrUserId, callback) {

        /**
         * Callback for QB.chat.roster.add(). Run without parameters.
         * @callback addRosterCallback
         * */
        var self = this;
        var userJid = this.helpers.jidOrUserId(jidOrUserId);
        var userId = this.helpers.getIdFromNode(userJid).toString();

        self.contacts[userId] = {
            subscription: 'none',
            ask: 'subscribe'
        };

        self._sendSubscriptionPresence({
            jid: userJid,
            type: 'subscribe'
        });

        if (typeof callback === 'function') {
            callback();
        }
    },

    /**
     * Confirm subscription with some user. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Confirm_subscription_request More info.}
     * @memberof QB.chat.roster
     * @param {String | Number} jidOrUserId - Use opponent id for 1 to 1 chat, and jid for group chat.
     * @param {confirmRosterCallback} callback - The callback function.
     * */
    confirm: function (jidOrUserId, callback) {

        /**
         * Callback for QB.chat.roster.confirm(). Run without parameters.
         * @callback confirmRosterCallback
         * */
        var self = this;
        var userJid = this.helpers.jidOrUserId(jidOrUserId);
        var userId = this.helpers.getIdFromNode(userJid).toString();

        self.contacts[userId] = {
            subscription: 'from',
            ask: 'subscribe'
        };

        self._sendSubscriptionPresence({
            jid: userJid,
            type: 'subscribed'
        });

        self._sendSubscriptionPresence({
            jid: userJid,
            type: 'subscribe'
        });


        if (typeof callback === 'function') {
            callback();
        }
    },

    /**
     * Reject subscription with some user. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Reject_subscription_request More info.}
     * @memberof QB.chat.roster
     * @param {String | Number} jidOrUserId - Use opponent id for 1 to 1 chat, and jid for group chat.
     * @param {rejectRosterCallback} callback - The callback function.
     * */
    reject: function (jidOrUserId, callback) {

        /**
         * Callback for QB.chat.roster.reject(). Run without parameters.
         * @callback rejectRosterCallback
         * */
        var self = this;
        var userJid = this.helpers.jidOrUserId(jidOrUserId);
        var userId = this.helpers.getIdFromNode(userJid).toString();

        self.contacts[userId] = {
            subscription: 'none',
            ask: null
        };

        self._sendSubscriptionPresence({
            jid: userJid,
            type: 'unsubscribed'
        });

        if (typeof callback === 'function') {
            callback();
        }
    },


    /**
     * Remove subscription with some user from your contact list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Remove_users More info.}
     * @memberof QB.chat.roster
     * @param {String | Number} jidOrUserId - Use opponent id for 1 to 1 chat, and jid for group chat.
     * @param {removeRosterCallback} callback - The callback function.
     * */
    remove: function (jidOrUserId, callback) {

        /**
         * Callback for QB.chat.roster.remove(). Run without parameters.
         * @callback removeRosterCallback
         * */
        var self = this,
            userJid = this.helpers.jidOrUserId(jidOrUserId),
            userId = this.helpers.getIdFromNode(userJid);

        var iqParams = {
            'type': 'set',
            'from': self.connection ? self.connection.jid : self.Client.jid.user,
            'id': chatUtils.getUniqueId('getRoster')
        };

        var builder = Utils.getEnv().browser ? $iq : XMPP.Stanza,
            iq = chatUtils.createStanza(builder, iqParams, 'iq');

        function _callbackWrap() {
            delete self.contacts[userId];

            if (typeof callback === 'function') {
                callback();
            }
        }

        iq.c('query', {
            xmlns: chatUtils.MARKERS.ROSTER
        }).c('item', {
            jid: userJid,
            subscription: 'remove'
        });

        if (Utils.getEnv().browser) {
            self.connection.sendIQ(iq, _callbackWrap);
        } else {
            self.nodeStanzasCallbacks[iqParams.id] = _callbackWrap;
            self.Client.send(iq);
        }
    },

    _sendSubscriptionPresence: function (params) {
        var builder = Utils.getEnv().browser ? $pres : XMPP.Stanza,
            presParams = {
                to: params.jid,
                type: params.type
            };

        var pres = chatUtils.createStanza(builder, presParams, 'presence');

        if (Utils.getEnv().browser) {
            this.connection.send(pres);
        } else {
            this.Client.send(pres);
        }
    }
};

/* Chat module: Group Chat (Dialog)
 *
 * Multi-User Chat
 * http://xmpp.org/extensions/xep-0045.html
 *
 ----------------------------------------------------------------------------- */

/**
 * @namespace QB.chat.muc
 * */
function MucProxy(options) {
    this.service = options.service;
    this.helpers = options.helpers;
    this.connection = options.stropheClient;
    this.Client = options.xmppClient;
    this.nodeStanzasCallbacks = options.nodeStanzasCallbacks;
    //
    this.joinedRooms = {};
}

MucProxy.prototype = {

    /**
     * Join to the group dialog. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Chat_in_group_dialog More info.}
     * @memberof QB.chat.muc
     * @param {String} dialogIdOrJid - Use dialog jid or dialog id to join to this dialog.
     * @param {joinMacCallback} callback - The callback function.
     * */
    join: function (dialogIdOrJid, callback) {
        /**
         * Callback for QB.chat.muc.join().
         * @param {Object} error - Returns error object or null
         * @param {Object} responce - Returns responce
         * @callback joinMacCallback
         * */
        var self = this,
            id = chatUtils.getUniqueId('join');

        var dialogJid = this.helpers.getDialogJid(dialogIdOrJid);

        var presParams = {
                id: id,
                from: self.helpers.getUserCurrentJid(),
                to: self.helpers.getRoomJid(dialogJid)
            },
            builder = Utils.getEnv().browser ? $pres : XMPP.Stanza;

        var pres = chatUtils.createStanza(builder, presParams, 'presence');

        pres.c('x', {
            xmlns: chatUtils.MARKERS.MUC
        }).c('history', {maxstanzas: 0});

        this.joinedRooms[dialogJid] = true;

        function handleJoinAnswer(stanza) {
            var id = chatUtils.getAttr(stanza, 'id');
            var from = chatUtils.getAttr(stanza, 'from');
            var dialogId = self.helpers.getDialogIdFromNode(from);

            var x = chatUtils.getElement(stanza, 'x');
            var xXMLNS = chatUtils.getAttr(x, 'xmlns');
            var status = chatUtils.getElement(x, 'status');
            var statusCode = chatUtils.getAttr(status, 'code');

            if (callback.length == 1) {
                Utils.safeCallbackCall(callback, stanza);
                return true;
            }

            if (status && statusCode == '110') {
                Utils.safeCallbackCall(callback, null, {
                    dialogId: dialogId
                });
            } else {
                var type = chatUtils.getAttr(stanza, 'type');

                if (type && type === 'error' && xXMLNS == 'http://jabber.org/protocol/muc' && id.endsWith(':join')) {
                    var errorEl = chatUtils.getElement(stanza, 'error');
                    var code = chatUtils.getAttr(errorEl, 'code');
                    var errorMessage = chatUtils.getElementText(errorEl, 'text');

                    Utils.safeCallbackCall(callback, {
                        code: code || 500,
                        message: errorMessage || 'Unknown issue'
                    }, {
                        dialogId: dialogId
                    });
                }
            }
        }

        if (Utils.getEnv().browser) {
            if (typeof callback === 'function') {
                self.connection.XAddTrackedHandler(handleJoinAnswer, null, 'presence', null, id);
            }

            self.connection.send(pres);
        } else {
            if (typeof callback === 'function') {
                self.nodeStanzasCallbacks[id] = handleJoinAnswer;
            }

            self.Client.send(pres);
        }
    },

    /**
     * Leave group chat dialog. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Chat_in_group_dialog More info.}
     * @memberof QB.chat.muc
     * @param {String} dialogJid - Use dialog jid to join to this dialog.
     * @param {leaveMacCallback} callback - The callback function.
     * */
    leave: function (jid, callback) {
        /**
         * Callback for QB.chat.muc.leave().
         * run without parameters;
         * @callback leaveMacCallback
         * */

        var self = this,
            presParams = {
                type: 'unavailable',
                from: self.helpers.getUserCurrentJid(),
                to: self.helpers.getRoomJid(jid)
            },
            builder = Utils.getEnv().browser ? $pres : XMPP.Stanza;

        var pres = chatUtils.createStanza(builder, presParams, 'presence');

        delete this.joinedRooms[jid];

        function handleLeaveAnswer(stanza) {
            var id = chatUtils.getAttr(stanza, 'id');
            var from = chatUtils.getAttr(stanza, 'from');
            var dialogId = self.helpers.getDialogIdFromNode(from);

            var x = chatUtils.getElement(stanza, 'x');
            var xXMLNS = chatUtils.getAttr(x, 'xmlns');
            var status = chatUtils.getElement(x, 'status');
            var statusCode = chatUtils.getAttr(status, 'code');

            if (status && statusCode == '110') {
                Utils.safeCallbackCall(callback, null, {
                    dialogId: dialogId
                });
            } else {
                var type = chatUtils.getAttr(stanza, 'type');

                if (type && type === 'error' && xXMLNS == 'http://jabber.org/protocol/muc' && id.endsWith(':join')) {
                    var errorEl = chatUtils.getElement(stanza, 'error');
                    var code = chatUtils.getAttr(errorEl, 'code');
                    var errorMessage = chatUtils.getElementText(errorEl, 'text');

                    Utils.safeCallbackCall(callback, {
                        code: code || 500,
                        message: errorMessage || 'Unknown issue'
                    }, {
                        dialogId: dialogId
                    });
                }
            }
        }

        if (Utils.getEnv().browser) {
            var roomJid = self.helpers.getRoomJid(jid);

            if (typeof callback === 'function') {
                self.connection.XAddTrackedHandler(handleLeaveAnswer, null, 'presence', presParams.type, null, roomJid);

            }

            self.connection.send(pres);
        } else {
            /** The answer don't contain id */
            if (typeof callback === 'function') {
                self.nodeStanzasCallbacks['muc:leave'] = handleLeaveAnswer;
            }

            self.Client.send(pres);
        }
    },

    /**
     * Leave group chat dialog. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Chat_in_group_dialog More info.}
     * @memberof QB.chat.muc
     * @param {String} dialogJid - Use dialog jid to join to this dialog.
     * @param {listOnlineUsersMacCallback} callback - The callback function.
     * */
    listOnlineUsers: function (dialogJID, callback) {
        /**
         * Callback for QB.chat.muc.leave().
         * @param {Object} Users - list of online users
         * @callback listOnlineUsersMacCallback
         * */

        var self = this,
            onlineUsers = [];

        var iqParams = {
                type: 'get',
                to: dialogJID,
                from: self.helpers.getUserCurrentJid(),
                id: chatUtils.getUniqueId('muc_disco_items'),
            },
            builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;
        var iq = chatUtils.createStanza(builder, iqParams, 'iq');
        iq.c('query', {
            xmlns: 'http://jabber.org/protocol/disco#items'
        });

        function _getUsers(stanza) {
            var stanzaId = stanza.attrs.id;

            if (self.nodeStanzasCallbacks[stanzaId]) {
                var users = [],
                    items = stanza.getChild('query').getChildElements('item'),
                    userId;

                for (var i = 0, len = items.length; i < len; i++) {
                    userId = self.helpers.getUserIdFromRoomJid(items[i].attrs.jid);
                    users.push(parseInt(userId));
                }

                callback(users);
            }
        }

        if (Utils.getEnv().browser) {
            self.connection.sendIQ(iq, function (stanza) {
                var items = stanza.getElementsByTagName('item'),
                    userId;

                for (var i = 0, len = items.length; i < len; i++) {
                    userId = self.helpers.getUserIdFromRoomJid(items[i].getAttribute('jid'));
                    onlineUsers.push(parseInt(userId));
                }

                callback(onlineUsers);
            });
        } else {
            self.Client.send(iq);

            self.nodeStanzasCallbacks[iqParams.id] = _getUsers;
        }
    }
};

/* Chat module: Privacy list
 *
 * Privacy list
 * http://xmpp.org/extensions/xep-0016.html
 * by default 'mutualBlock' is work in one side
----------------------------------------------------------------------------- */
function PrivacyListProxy(options) {
    this.service = options.service;
    this.helpers = options.helpers;
    this.connection = options.stropheClient;
    this.Client = options.xmppClient;
    this.nodeStanzasCallbacks = options.nodeStanzasCallbacks;
}

/**
 * @namespace QB.chat.privacylist
 **/
PrivacyListProxy.prototype = {
    /**
     * Create a privacy list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Create_a_privacy_list_or_edit_existing_list More info.}
     * @memberof QB.chat.privacylist
     * @param {Object} list - privacy list object.
     * @param {createPrivacylistCallback} callback - The callback function.
     * */
    create: function (list, callback) {
        /**
         * Callback for QB.chat.privacylist.create().
         * @param {Object} error - The error object
         * @callback createPrivacylistCallback
         * */
        var self = this,
            userId, userJid, userMuc,
            userAction,
            mutualBlock,
            listPrivacy = {},
            listUserId = [];

        /** Filled listPrivacys */
        for (var i = list.items.length - 1; i >= 0; i--) {
            var user = list.items[i];

            listPrivacy[user.user_id] = {
                action: user.action,
                mutualBlock: user.mutualBlock === true ? true : false
            };
        }

        /** Filled listUserId */
        listUserId = Object.keys(listPrivacy);

        var iqParams = {
                type: 'set',
                from: self.helpers.getUserCurrentJid(),
                id: chatUtils.getUniqueId('edit')
            },
            builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;

        var iq = chatUtils.createStanza(builder, iqParams, 'iq');

        iq.c('query', {
            xmlns: chatUtils.MARKERS.PRIVACY
        }).c('list', {
            name: list.name
        });

        function createPrivacyItem(iq, params) {
            if (Utils.getEnv().browser) {
                iq.c('item', {
                    type: 'jid',
                    value: params.jidOrMuc,
                    action: params.userAction,
                    order: params.order
                }).c('message', {})
                    .up().c('presence-in', {})
                    .up().c('presence-out', {})
                    .up().c('iq', {})
                    .up().up();
            } else {
                var list = iq.getChild('query').getChild('list');

                list.c('item', {
                    type: 'jid',
                    value: params.jidOrMuc,
                    action: params.userAction,
                    order: params.order
                }).c('message', {})
                    .up().c('presence-in', {})
                    .up().c('presence-out', {})
                    .up().c('iq', {})
                    .up().up();
            }

            return iq;
        }

        function createPrivacyItemMutal(iq, params) {
            if (Utils.getEnv().browser) {
                iq.c('item', {
                    type: 'jid',
                    value: params.jidOrMuc,
                    action: params.userAction,
                    order: params.order
                }).up();
            } else {
                var list = iq.getChild('query').getChild('list');

                list.c('item', {
                    type: 'jid',
                    value: params.jidOrMuc,
                    action: params.userAction,
                    order: params.order
                }).up();
            }

            return iq;
        }

        for (var index = 0, j = 0, len = listUserId.length; index < len; index++, j = j + 2) {
            userId = listUserId[index];
            mutualBlock = listPrivacy[userId].mutualBlock;

            userAction = listPrivacy[userId].action;
            userJid = self.helpers.jidOrUserId(parseInt(userId, 10));
            userMuc = self.helpers.getUserNickWithMucDomain(userId);

            if (mutualBlock && userAction === 'deny') {
                iq = createPrivacyItemMutal(iq, {
                    order: j + 1,
                    jidOrMuc: userJid,
                    userAction: userAction
                });
                iq = createPrivacyItemMutal(iq, {
                    order: j + 2,
                    jidOrMuc: userMuc,
                    userAction: userAction
                }).up().up();
            } else {
                iq = createPrivacyItem(iq, {
                    order: j + 1,
                    jidOrMuc: userJid,
                    userAction: userAction
                });
                iq = createPrivacyItem(iq, {
                    order: j + 2,
                    jidOrMuc: userMuc,
                    userAction: userAction
                });
            }
        }

        if (Utils.getEnv().browser) {
            self.connection.sendIQ(iq, function (stanzaResult) {
                callback(null);
            }, function (stanzaError) {
                if (stanzaError) {
                    var errorObject = chatUtils.getErrorFromXMLNode(stanzaError);
                    callback(errorObject);
                } else {
                    callback(Utils.getError(408));
                }
            });
        } else {
            self.Client.send(iq);

            self.nodeStanzasCallbacks[iqParams.id] = function (stanza) {
                if (!stanza.getChildElements('error').length) {
                    callback(null);
                } else {
                    callback(Utils.getError(408));
                }
            };
        }
    },

    /**
     * Get the privacy list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Retrieve_a_privacy_list More info.}
     * @memberof QB.chat.privacylist
     * @param {String} name - The name of the list.
     * @param {getListPrivacylistCallback} callback - The callback function.
     * */
    getList: function (name, callback) {
        /**
         * Callback for QB.chat.privacylist.getList().
         * @param {Object} error - The error object
         * @param {Object} response - The privacy list object
         * @callback getListPrivacylistCallback
         * */

        var self = this,
            items, userJid, userId,
            usersList = [], list = {};

        var iqParams = {
                type: 'get',
                from: self.helpers.getUserCurrentJid(),
                id: chatUtils.getUniqueId('getlist')
            },
            builder = Utils.getEnv().browser ? $iq : XMPP.Stanza;

        var iq = chatUtils.createStanza(builder, iqParams, 'iq');

        iq.c('query', {
            xmlns: chatUtils.MARKERS.PRIVACY
        }).c('list', {
            name: name
        });

        if (Utils.getEnv().browser) {
            self.connection.sendIQ(iq, function (stanzaResult) {
                items = stanzaResult.getElementsByTagName('item');

                for (var i = 0, len = items.length; i < len; i = i + 2) {
                    userJid = items[i].getAttribute('value');
                    userId = self.helpers.getIdFromNode(userJid);
                    usersList.push({
                        user_id: userId,
                        action: items[i].getAttribute('action')
                    });
                }
                list = {
                    name: name,
                    items: usersList
                };
                callback(null, list);
            }, function (stanzaError) {
                if (stanzaError) {
                    var errorObject = chatUtils.getErrorFromXMLNode(stanzaError);
                    callback(errorObject, null);
                } else {
                    callback(Utils.getError(408), null);
                }
            });
        } else {
            self.nodeStanzasCallbacks[iqParams.id] = function (stanza) {
                var stanzaQuery = stanza.getChild('query'),
                    list = stanzaQuery ? stanzaQuery.getChild('list') : null,
                    items = list ? list.getChildElements('item') : null,
                    userJid, userId, usersList = [];

                for (var i = 0, len = items.length; i < len; i = i + 2) {
                    userJid = items[i].attrs.value;
                    userId = self.helpers.getIdFromNode(userJid);
                    usersList.push({
                        user_id: userId,
                        action: items[i].attrs.action
                    });
                }

                list = {
                    name: list.attrs.name,
                    items: usersList
                };

                callback(null, list);
                delete self.nodeStanzasCallbacks[iqParams.id];
            };

            self.Client.send(iq);
        }
    },

    /**
     * Update the privacy list.
     * @memberof QB.chat.privacylist
     * @param {String} name - The name of the list.
     * @param {updatePrivacylistCallback} callback - The callback function.
     * */
    update: function (listWithUpdates, callback) {
        /**
         * Callback for QB.chat.privacylist.update().
         * @param {Object} error - The error object
         * @param {Object} response - The privacy list object
         * @callback updatePrivacylistCallback
         * */

        var self = this;

        self.getList(listWithUpdates.name, function (error, existentList) {
            if (error) {
                callback(error, null);
            } else {
                var updatedList = {};
                updatedList.items = Utils.MergeArrayOfObjects(existentList.items, listWithUpdates.items);
                updatedList.name = listWithUpdates.name;

                self.create(updatedList, function (err, result) {
                    if (error) {
                        callback(err, null);
                    } else {
                        callback(null, result);
                    }
                });
            }
        });
    },

    /**
     * Get names of privacy lists. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Retrieve_privacy_lists_names More info.}
     * Run without parameters
     * @memberof QB.chat.privacylist
     * @param {getNamesPrivacylistCallback} callback - The callback function.
     * */
    getNames: function (callback) {
        /**
         * Callback for QB.chat.privacylist.getNames().
         * @param {Object} error - The error object
         * @param {Object} response - The privacy list object (var names = response.names;)
         * @callback getNamesPrivacylistCallback
         * */

        var self = this,
            iq,
            stanzaParams = {
                'type': 'get',
                'from': self.helpers.getUserCurrentJid(),
                'id': chatUtils.getUniqueId('getNames')
            };

        if (Utils.getEnv().browser) {
            iq = $iq(stanzaParams).c('query', {
                xmlns: Strophe.NS.PRIVACY_LIST
            });

            self.connection.sendIQ(iq, function (stanzaResult) {
                var allNames = [], namesList = {},
                    defaultList = stanzaResult.getElementsByTagName('default'),
                    activeList = stanzaResult.getElementsByTagName('active'),
                    allLists = stanzaResult.getElementsByTagName('list');

                var defaultName = defaultList && defaultList.length > 0 ? defaultList[0].getAttribute('name') : null;
                var activeName = activeList && activeList.length > 0 ? activeList[0].getAttribute('name') : null;

                for (var i = 0, len = allLists.length; i < len; i++) {
                    allNames.push(allLists[i].getAttribute('name'));
                }

                namesList = {
                    'default': defaultName,
                    'active': activeName,
                    'names': allNames
                };

                callback(null, namesList);
            }, function (stanzaError) {
                if (stanzaError) {
                    var errorObject = chatUtils.getErrorFromXMLNode(stanzaError);
                    callback(errorObject, null);
                } else {
                    callback(Utils.getError(408), null);
                }
            });
        } else {
            iq = new XMPP.Stanza('iq', stanzaParams);

            iq.c('query', {
                xmlns: chatUtils.MARKERS.PRIVACY
            });

            self.nodeStanzasCallbacks[iq.attrs.id] = function (stanza) {
                if (stanza.attrs.type !== 'error') {

                    var allNames = [], namesList = {},
                        query = stanza.getChild('query'),
                        defaultList = query.getChild('default'),
                        activeList = query.getChild('active'),
                        allLists = query.getChildElements('list');

                    var defaultName = defaultList ? defaultList.attrs.name : null,
                        activeName = activeList ? activeList.attrs.name : null;

                    for (var i = 0, len = allLists.length; i < len; i++) {
                        allNames.push(allLists[i].attrs.name);
                    }

                    namesList = {
                        'default': defaultName,
                        'active': activeName,
                        'names': allNames
                    };

                    callback(null, namesList);
                } else {
                    callback(Utils.getError(408));
                }
            };

            self.Client.send(iq);
        }
    },

    /**
     * Delete privacy list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Delete_existing_privacy_list More info.}
     * @param {String} name - The name of privacy list.
     * @memberof QB.chat.privacylist
     * @param {deletePrivacylistCallback} callback - The callback function.
     * */
    delete: function (name, callback) {
        /**
         * Callback for QB.chat.privacylist.delete().
         * @param {Object} error - The error object
         * @callback deletePrivacylistCallback
         * */

        var iq,
            stanzaParams = {
                'from': this.connection ? this.connection.jid : this.Client.jid.user,
                'type': 'set',
                'id': chatUtils.getUniqueId('remove')
            };

        if (Utils.getEnv().browser) {
            iq = $iq(stanzaParams).c('query', {
                xmlns: Strophe.NS.PRIVACY_LIST
            }).c('list', {
                name: name ? name : ''
            });

            this.connection.sendIQ(iq, function (stanzaResult) {
                callback(null);
            }, function (stanzaError) {
                if (stanzaError) {
                    var errorObject = chatUtils.getErrorFromXMLNode(stanzaError);
                    callback(errorObject);
                } else {
                    callback(Utils.getError(408));
                }
            });

        } else {
            iq = new XMPP.Stanza('iq', stanzaParams);

            iq.c('query', {
                xmlns: chatUtils.MARKERS.PRIVACY
            }).c('list', {
                name: name ? name : ''
            });

            this.nodeStanzasCallbacks[stanzaParams.id] = function (stanza) {
                if (!stanza.getChildElements('error').length) {
                    callback(null);
                } else {
                    callback(Utils.getError(408));
                }
            };

            this.Client.send(iq);
        }

    },

    /**
     * Set as default privacy list. {@link https://quickblox.com/developers/Web_XMPP_Chat_Sample#Activate_a_privacy_list More info.}
     * @param {String} name - The name of privacy list.
     * @memberof QB.chat.privacylist
     * @param {setAsDefaultPrivacylistCallback} callback - The callback function.
     * */
    setAsDefault: function (name, callback) {
        /**
         * Callback for QB.chat.privacylist.setAsDefault().
         * @param {Object} error - The error object
         * @callback setAsDefaultPrivacylistCallback
         * */

        var self = this,
            iq,
            stanzaParams = {
                'from': this.connection ? this.connection.jid : this.Client.jid.user,
                'type': 'set',
                'id': chatUtils.getUniqueId('default')
            };

        if (Utils.getEnv().browser) {
            iq = $iq(stanzaParams).c('query', {
                xmlns: Strophe.NS.PRIVACY_LIST
            }).c('default', name && name.length > 0 ? {name: name} : {});

            this.connection.sendIQ(iq, function (stanzaResult) {
                setAsActive(self); //Activate list after setting it as default.
            }, function (stanzaError) {
                if (stanzaError) {
                    var errorObject = chatUtils.getErrorFromXMLNode(stanzaError);
                    callback(errorObject);
                } else {
                    callback(Utils.getError(408));
                }
            });
        } else {
            iq = new XMPP.Stanza('iq', stanzaParams);

            iq.c('query', {
                xmlns: chatUtils.MARKERS.PRIVACY
            }).c('default', name && name.length > 0 ? {name: name} : {});

            this.nodeStanzasCallbacks[stanzaParams.id] = function (stanza) {
                if (!stanza.getChildElements('error').length) {
                    setAsActive(self); //Activate list after setting it as default.
                } else {
                    callback(Utils.getError(408));
                }
            };
            this.Client.send(iq);
        }

        /**
         * Set as active privacy list after setting as default.
         * @param {PrivacyListProxy Object} self - The name of privacy list.
         * */
        function setAsActive(self) {
            var setAsActiveIq,
                setAsActiveStanzaParams = {
                    'from': self.connection ? self.connection.jid : self.Client.jid.user,
                    'type': 'set',
                    'id': chatUtils.getUniqueId('active1')
                };
            if (Utils.getEnv().browser) {
                setAsActiveIq = $iq(setAsActiveStanzaParams).c('query', {
                    xmlns: Strophe.NS.PRIVACY_LIST
                }).c('active', name && name.length > 0 ? {name: name} : {});
                self.connection.sendIQ(setAsActiveIq, function (setAsActiveStanzaResult) {
                    callback(null);
                }, function (setAsActiveStanzaError) {
                    if (setAsActiveStanzaError) {
                        var setAsActiveErrorObject = chatUtils.getErrorFromXMLNode(setAsActiveStanzaError);
                        callback(setAsActiveErrorObject);
                    } else {
                        callback(Utils.getError(408));
                    }
                });
            } else {
                setAsActiveIq = new XMPP.Stanza('iq', setAsActiveStanzaParams);
                setAsActiveIq.c('query', {
                    xmlns: chatUtils.MARKERS.PRIVACY
                }).c('active', name && name.length > 0 ? {name: name} : {});
                self.nodeStanzasCallbacks[setAsActiveStanzaParams.id] = function (setAsActistanza) {
                    if (!setAsActistanza.getChildElements('error').length) {
                        callback(null);
                    } else {
                        callback(Utils.getError(408));
                    }
                };
                self.Client.send(setAsActiveIq);
            }
        }
    }

};

/* Helpers
 ----------------------------------------------------------------------------- */
function Helpers() {
    this._userCurrentJid = '';
}

/**
 * @namespace QB.chat.helpers
 * */
Helpers.prototype = {

    /**
     * Get unique id.
     * @memberof QB.chat.helpers
     * @param {String | Number} suffix - not required parameter.
     * @returns {String} - UniqueId.
     * */
    getUniqueId: chatUtils.getUniqueId,

    /**
     * Get unique id.
     * @memberof QB.chat.helpers
     * @param {String | Number} jid_or_user_id - Jid or user id.
     * @returns {String} - jid.
     * */
    jidOrUserId: function (jid_or_user_id) {
        var jid;
        if (typeof jid_or_user_id === 'string') {
            jid = jid_or_user_id;
        } else if (typeof jid_or_user_id === 'number') {
            jid = jid_or_user_id + '-' + config.creds.appId + '@' + config.endpoints.chat;
        } else {
            throw new Error('The method "jidOrUserId" may take jid or id');
        }
        return jid;
    },

    /**
     * Get the chat type.
     * @memberof QB.chat.helpers
     * @param {String | Number} jid_or_user_id - Jid or user id.
     * @returns {String} - jid.
     * */
    typeChat: function (jid_or_user_id) {
        var chatType;
        if (typeof jid_or_user_id === 'string') {
            chatType = jid_or_user_id.indexOf("muc") > -1 ? 'groupchat' : 'chat';
        } else if (typeof jid_or_user_id === 'number') {
            chatType = 'chat';
        } else {
            throw new Error(unsupportedError);
        }
        return chatType;
    },

    /**
     * Get the recipint id.
     * @memberof QB.chat.helpers
     * @param {Array} occupantsIds - Array of user ids.
     * @param {Number} UserId - Jid or user id.
     * @returns {Number} recipient - recipient id.
     * */
    getRecipientId: function (occupantsIds, UserId) {
        var recipient = null;
        occupantsIds.forEach(function (item) {
            if (item != UserId) {
                recipient = item;
            }
        });
        return recipient;
    },

    /**
     * Get the User jid id.
     * @memberof QB.chat.helpers
     * @param {Number} UserId - The user id.
     * @param {Number} appId - The application id.
     * @returns {String} jid - The user jid.
     * */
    getUserJid: function (userId, appId) {
        if (!appId) {
            return userId + '-' + config.creds.appId + '@' + config.endpoints.chat;
        }
        return userId + '-' + appId + '@' + config.endpoints.chat;
    },

    /**
     * Get the User nick with the muc domain.
     * @memberof QB.chat.helpers
     * @param {Number} UserId - The user id.
     * @returns {String} mucDomainWithNick - The mac domain with he nick.
     * */
    getUserNickWithMucDomain: function (userId) {
        return config.endpoints.muc + '/' + userId;
    },

    /**
     * Get the User id from jid.
     * @memberof QB.chat.helpers
     * @param {String} jid - The user jid.
     * @returns {Number} id - The user id.
     * */
    getIdFromNode: function (jid) {
        return (jid.indexOf('@') < 0) ? null : parseInt(jid.split('@')[0].split('-')[0]);
    },

    /**
     * Get the dialog id from jid.
     * @memberof QB.chat.helpers
     * @param {String} jid - The dialog jid.
     * @returns {String} dialogId - The dialog id.
     * */
    getDialogIdFromNode: function (jid) {
        if (jid.indexOf('@') < 0) return null;
        return jid.split('@')[0].split('_')[1];
    },

    /**
     * Get the room jid from dialog id.
     * @memberof QB.chat.helpers
     * @param {String} dialogId - The dialog id.
     * @returns {String} jid - The dialog jid.
     * */
    getRoomJidFromDialogId: function (dialogId) {
        return config.creds.appId + '_' + dialogId + '@' + config.endpoints.muc;
    },

    /**
     * Get the full room jid from room bare jid & user jid.
     * @memberof QB.chat.helpers
     * @param {String} jid - dialog's bare jid.
     * @param {String} userJid - user's jid.
     * @returns {String} jid - dialog's full jid.
     * */
    getRoomJid: function (jid) {
        return jid + '/' + this.getIdFromNode(this._userCurrentJid);
    },

    /**
     * Get user id from dialog's full jid.
     * @memberof QB.chat.helpers
     * @param {String} jid - dialog's full jid.
     * @returns {String} user_id - User Id.
     * */
    getIdFromResource: function (jid) {
        var s = jid.split('/');
        if (s.length < 2) return null;
        s.splice(0, 1);
        return parseInt(s.join('/'));
    },

    /**
     * Get bare dialog's jid from dialog's full jid.
     * @memberof QB.chat.helpers
     * @param {String} jid - dialog's full jid.
     * @returns {String} room_jid - dialog's bare jid.
     * */
    getRoomJidFromRoomFullJid: function (jid) {
        var s = jid.split('/');
        if (s.length < 2) return null;
        return s[0];
    },

    /**
     * Generate BSON ObjectId.
     * @memberof QB.chat.helpers
     * @returns {String} BsonObjectId - The bson object id.
     **/
    getBsonObjectId: function () {
        return Utils.getBsonObjectId();
    },

    /**
     * Get the user id from the room jid.
     * @memberof QB.chat.helpers
     * @param {String} jid - resourse jid.
     * @returns {String} userId - The user id.
     * */
    getUserIdFromRoomJid: function (jid) {
        var arrayElements = jid.toString().split('/');
        if (arrayElements.length === 0) {
            return null;
        }
        return arrayElements[arrayElements.length - 1];
    },

    userCurrentJid: function (client) {
        try {
            if (client instanceof Strophe.Connection) {
                return client.jid;
            } else {
                return client.jid.user + '@' + client.jid._domain + '/' + client.jid._resource;
            }
        } catch (e) { // ReferenceError: Strophe is not defined
            return client.jid.user + '@' + client.jid._domain + '/' + client.jid._resource;
        }
    },

    getUserCurrentJid: function () {
        return this._userCurrentJid;
    },

    setUserCurrentJid: function (jid) {
        this._userCurrentJid = jid;
    },

    getDialogJid: function (identifier) {
        return identifier.indexOf('@') > 0 ? identifier : this.getRoomJidFromDialogId(identifier);
    }
};
/**
 * @namespace QB.chat
 * */
module.exports = ChatProxy;

},{"../../plugins/streamManagement":251,"../../qbConfig":252,"../../qbStrophe":255,"../../qbUtils":256,"./qbChatHelpers":235,"nativescript-xmpp-client":undefined,"node-xmpp-client":111}],235:[function(require,module,exports){
'use strict';

var utils = require('../../qbUtils');
var config = require('../../qbConfig');

var ERR_UNKNOWN_INTERFACE = 'Unknown interface. SDK support browser / node env.';

var MARKERS = {
    CLIENT: 'jabber:client',
    CHAT: 'urn:xmpp:chat-markers:0',
    STATES: 'http://jabber.org/protocol/chatstates',
    MARKERS: 'urn:xmpp:chat-markers:0',
    CARBONS: 'urn:xmpp:carbons:2',
    ROSTER: 'jabber:iq:roster',
    MUC: 'http://jabber.org/protocol/muc',
    PRIVACY: 'jabber:iq:privacy',
    LAST: 'jabber:iq:last'
};

function ChatNotConnectedError(message, fileName, lineNumber) {
    var instance = new Error(message, fileName, lineNumber);
    instance.name = 'ChatNotConnectedError';
    Object.setPrototypeOf(instance, Object.getPrototypeOf(this));
    if (Error.captureStackTrace) {
        Error.captureStackTrace(instance, ChatNotConnectedError);
    }
    return instance;
}

ChatNotConnectedError.prototype = Object.create(Error.prototype, {
    constructor: {
        value: Error,
        enumerable: false,
        writable: true,
        configurable: true
    }
});

if (Object.setPrototypeOf) {
    Object.setPrototypeOf(ChatNotConnectedError, Error);
} else {
    ChatNotConnectedError.__proto__ = Error; // jshint ignore:line
}

var qbChatHelpers = {
    MARKERS: MARKERS,
    ChatNotConnectedError: ChatNotConnectedError,
    /**
     * @param {params} this object may contains Jid or Id property
     * @return {string} jid of user
     */
    buildUserJid: function(params) {
        var jid;

        if ('userId' in params) {
            jid = params.userId + '-' + config.creds.appId + '@' + config.endpoints.chat;

            if ('resource' in params) {
                jid = jid + '/' + params.resource;
            }
        } else if ('jid' in params) {
            jid = params.jid;
        }

        return jid;
    },
    createStanza: function(builder, params, type) {
        var stanza;

        if(utils.getEnv().browser) {
            stanza = builder(params);
        } else {
            stanza = new builder(type ? type : 'message', params);
        }

        return stanza;
    },
    getAttr: function(el, attrName) {
        var attr;

        if(!el) {
            return null;
        }

        if(typeof el.getAttribute === 'function') {
            attr = el.getAttribute(attrName);
        } else if(el.attrs) {
            attr = el.attrs[attrName];
        }

        return attr ? attr : null;
    },
    getElement: function(stanza, elName) {
        var el;

        if(typeof stanza.querySelector === 'function') {
            el = stanza.querySelector(elName);
        } else if(typeof stanza.getChild === 'function'){
            el = stanza.getChild(elName) || stanza.children.find(child => typeof child.getChild === 'function' && this.getElement(child, elName));
        } else {
            throw ERR_UNKNOWN_INTERFACE;
        }

        return el ? el : null;
    },
    getAllElements: function(stanza, elName) {
        var el;

        if(typeof stanza.querySelectorAll === 'function') {
            el = stanza.querySelectorAll(elName);
        } else if(typeof stanza.getChild === 'function'){
            el = stanza.getChild(elName);
        } else {
            throw ERR_UNKNOWN_INTERFACE;
        }

        return el ? el : null;
    },
    getElementText: function(stanza, elName) {
        var el,
            txt;

        if(typeof stanza.querySelector === 'function') {
            el = stanza.querySelector(elName);
            txt = el ? el.textContent : null;
        } else if(typeof stanza.getChildText === 'function') {
            txt = stanza.getChildText(elName) || stanza.children.find(child => typeof child.getChildText === 'function' && this.getElementText(child, elName));
        } else {
            throw ERR_UNKNOWN_INTERFACE;
        }

        return txt ? txt : null;
    },
    _JStoXML: function(title, obj, msg) {
        var self = this;

        msg.c(title);

        Object.keys(obj).forEach(function(field) {
            if (typeof obj[field] === 'object') {
                self._JStoXML(field, obj[field], msg);
            } else {
                msg.c(field).t(obj[field]).up();
            }
        });

        msg.up();
    },
    _XMLtoJS: function(extension, title, obj) {
        var self = this;

        extension[title] = {};

        for (var i = 0, len = obj.childNodes.length; i < len; i++) {
            if (obj.childNodes[i].childNodes.length > 1) {
                extension[title] = self._XMLtoJS(extension[title], obj.childNodes[i].tagName, obj.childNodes[i]);
            } else {
                extension[title][obj.childNodes[i].tagName] = obj.childNodes[i].textContent;
            }
        }
        return extension;
    },
    filledExtraParams: function(stanza, extension) {
        var helper = this;

        Object.keys(extension).forEach(function(field) {
            if (field === 'attachments') {
                extension[field].forEach(function(attach) {
                    if (utils.getEnv().browser) {
                        stanza.c('attachment', attach).up();
                    } else {
                        stanza.getChild('extraParams')
                            .c('attachment', attach).up();
                    }
                });
            } else if (typeof extension[field] === 'object') {
                helper._JStoXML(field, extension[field], stanza);
            } else {
                if (utils.getEnv().browser) {
                    stanza.c(field).t(extension[field]).up();
                } else {
                    stanza.getChild('extraParams')
                        .c(field).t(extension[field]).up();
                }
            }
        });

        stanza.up();

        return stanza;
    },
    parseExtraParams: function(extraParams) {
        var self = this;

        if (!extraParams) {
            return null;
        }

        var extension = {};

        var dialogId,
            attach,
            attributes;

        var attachments = [];

        if (utils.getEnv().browser) {
            for (var i = 0, len = extraParams.childNodes.length; i < len; i++) {
                // parse attachments
                if (extraParams.childNodes[i].tagName === 'attachment') {
                    attach = {};
                    attributes = extraParams.childNodes[i].attributes;

                    for (var j = 0, len2 = attributes.length; j < len2; j++) {
                        if (attributes[j].name === 'size') {
                            attach[attributes[j].name] = parseInt(attributes[j].value);
                        } else {
                            attach[attributes[j].name] = attributes[j].value;
                        }
                    }

                    attachments.push(attach);

                    // parse 'dialog_id'
                } else if (extraParams.childNodes[i].tagName === 'dialog_id') {
                    dialogId = extraParams.childNodes[i].textContent;
                    extension.dialog_id = dialogId;

                    // parse other user's custom parameters
                } else {
                    if (extraParams.childNodes[i].childNodes.length > 1) {
                        // Firefox issue with 4K XML node limit:
                        // http://www.coderholic.com/firefox-4k-xml-node-limit/
                        var nodeTextContentSize = extraParams.childNodes[i].textContent.length;

                        if (nodeTextContentSize > 4096) {
                            var wholeNodeContent = "";
                            for (var k=0; k<extraParams.childNodes[i].childNodes.length; ++k) {
                                wholeNodeContent += extraParams.childNodes[i].childNodes[k].textContent;
                            }
                            extension[extraParams.childNodes[i].tagName] = wholeNodeContent;
                        } else {
                            extension = self._XMLtoJS(extension, extraParams.childNodes[i].tagName, extraParams.childNodes[i]);
                        }
                    } else {
                        extension[extraParams.childNodes[i].tagName] = extraParams.childNodes[i].textContent;
                    }
                }
            }

        } else {
            for (var c = 0, lenght = extraParams.children.length; c < lenght; c++) {
                if (extraParams.children[c].name === 'attachment') {
                    attach = {};
                    attributes = extraParams.children[c].attrs;

                    var attrKeys = Object.keys(attributes);

                    for (var l = 0; l < attrKeys.length; l++) {
                        if(attrKeys[l] === 'size'){
                            attach.size = parseInt(attributes.size);
                        } else {
                            attach[attrKeys[l]] = attributes[attrKeys[l]];
                        }
                    }

                    attachments.push(attach);

                } else if (extraParams.children[c].name === 'dialog_id') {
                    dialogId = extraParams.getChildText('dialog_id');
                    extension.dialog_id = dialogId;
                }

                if (extraParams.children[c].children.length === 1) {
                    var child = extraParams.children[c];

                    extension[child.name] = child.children[0];
                }
            }
        }

        if (attachments.length > 0) {
            extension.attachments = attachments;
        }

        if (extension.moduleIdentifier) {
            delete extension.moduleIdentifier;
        }

        return {
            extension: extension,
            dialogId: dialogId
        };
    },
    getUniqueId: function(suffix) {
        var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
            var r = Math.random() * 16 | 0,
                v = c == 'x' ? r : r & 0x3 | 0x8;
            return v.toString(16);
        });
        if (typeof(suffix) == 'string' || typeof(suffix) == 'number') {
            return uuid + ':' + suffix;
        } else {
            return uuid + '';
        }
    },
    getErrorFromXMLNode: function(stanzaError) {
        var errorElement = this.getElement(stanzaError, 'error');
        var errorCode = parseInt(this.getAttr(errorElement, 'code'));
        var errorText = this.getElementText(errorElement, 'text');

        return utils.getError(errorCode, errorText);
    },
    getLocalTime: function() {
        return (new Date()).toTimeString().split(' ')[0];
    }
};

module.exports = qbChatHelpers;

},{"../../qbConfig":252,"../../qbUtils":256}],236:[function(require,module,exports){
'use strict';

var config = require('../../qbConfig'),
    Utils = require('../../qbUtils');

var DIALOGS_API_URL = config.urls.chat + '/Dialog';

function DialogProxy(service) {
    this.service = service;
}

/**
 * @namespace QB.chat.dialog
 **/
DialogProxy.prototype = {
    /**
     * Retrieve list of dialogs({@link https://docs.quickblox.com/docs/js-chat-dialogs#retrieve-list-of-dialogs read more}).
     * @memberof QB.chat.dialog
     * @param {Object} params - Some filters to get only chat dialogs you need.
     * @param {listDialogCallback} callback - The callback function.
     * */
    list: function(params, callback) {
        /**
         * Callback for QB.chat.dialog.list().
         * @param {Object} error - The error object.
         * @param {Object} resDialogs - the dialog list.
         * @callback listDialogCallback
         * */

        if (typeof params === 'function' && typeof callback === 'undefined') {
            callback = params;
            params = {};
        }

        this.service.ajax({
            url: Utils.getUrl(DIALOGS_API_URL),
            data: params
        }, callback);
    },

    /**
     * Create new dialog({@link https://docs.quickblox.com/docs/js-chat-dialogs#create-dialog read more}).
     * @memberof QB.chat.dialog
     * @param {Object} params - Object of parameters.
     * @param {createDialogCallback} callback - The callback function.
     * */
    create: function(params, callback) {
        /**
         * Callback for QB.chat.dialog.create().
         * @param {Object} error - The error object.
         * @param {Object} createdDialog - the dialog object.
         * @callback createDialogCallback
         * */

        if (params && params.occupants_ids && Utils.isArray(params.occupants_ids)) {
            params.occupants_ids = params.occupants_ids.join(', ');
        }

        this.service.ajax({
            url: Utils.getUrl(DIALOGS_API_URL),
            type: 'POST',
            data: params
        }, callback);
    },

    /**
     * Update group dialog({@link https://docs.quickblox.com/docs/js-chat-dialogs#update-dialog read more}).
     * @memberof QB.chat.dialog
     * @param {String} id - The dialog ID.
     * @param {Object} params - Object of parameters.
     * @param {updateDialogCallback} callback - The callback function.
     * */
    update: function(id, params, callback) {
        /**
         * Callback for QB.chat.dialog.update()
         * @param {Object} error - The error object.
         * @param {Object} res - the dialog object.
         * @callback updateDialogCallback
         * */

        this.service.ajax({
            'url': Utils.getUrl(DIALOGS_API_URL, id),
            'type': 'PUT',
            'contentType': 'application/json; charset=utf-8',
            'isNeedStringify': true,
            'data': params
        }, callback);
    },

    /**
     * Delete a dialog or dialogs({@link https://docs.quickblox.com/docs/js-chat-dialogs#delete-dialog read more}).
     * @memberof QB.chat.dialog
     * @param {Array} id - The dialog IDs array.
     * @param {Object | function} params_or_callback - Object of parameters or callback function.
     * @param {deleteDialogCallback} callback - The callback function.
     * */
    delete: function(id, params_or_callback, callback) {
        /**
         * Callback for QB.chat.dialog.delete().
         * @param {Object} error - The error object.
         * @callback deleteDialogCallback
         * */

        var ajaxParams = {
            url: Utils.getUrl(DIALOGS_API_URL, id),
            type: 'DELETE',
            dataType: 'text'
        };

        if (arguments.length === 2) {
            this.service.ajax(ajaxParams, params_or_callback);
        } else if (arguments.length === 3) {
            ajaxParams.data = params_or_callback;

            this.service.ajax(ajaxParams, callback);
        }
    }
};

module.exports = DialogProxy;

},{"../../qbConfig":252,"../../qbUtils":256}],237:[function(require,module,exports){
'use strict';

var config = require('../../qbConfig'),
    Utils = require('../../qbUtils');

var MESSAGES_API_URL = config.urls.chat + '/Message';

function MessageProxy(service) {
    this.service = service;
}

/**
 * @namespace QB.chat.message
 **/
MessageProxy.prototype = {
    /**
     * Get a chat history({@link https://docs.quickblox.com/docs/js-chat-messaging#retrieve-chat-history read more}).
     * @memberof QB.chat.message
     * @param {Object} params - Object of parameters.
     * @param {listMessageCallback} callback - The callback function.
     * */
    list: function(params, callback) {
        /**
         * Callback for QB.chat.message.list().
         * @param {Object} error - The error object.
         * @param {Object} messages - The messages object.
         * @callback listMessageCallback
         * */

        this.service.ajax({
            url: Utils.getUrl(MESSAGES_API_URL),
            data: params
        }, callback);
    },

    /**
     * Create message.
     * @memberof QB.chat.message
     * @param {Object} params - Object of parameters.
     * @param {createMessageCallback} callback - The callback function.
     * */
    create: function(params, callback) {
        /**
         * Callback for QB.chat.message.create().
         * @param {Object} error - The error object.
         * @param {Object} messages - The message object.
         * @callback createMessageCallback
         * */

        this.service.ajax({
            url: Utils.getUrl(MESSAGES_API_URL),
            type: 'POST',
            data: params
        }, callback);
    },

    /**
     * Update message({@link https://docs.quickblox.com/docs/js-chat-messaging#update-message read more}).
     * @memberof QB.chat.message
     * @param {String} id - The message id.
     * @param {Object} params - Object of parameters.
     * @param {Number} [params.read] - Mark message as read (read=1).
     * @param {Number} [params.delivered] - Mark message as delivered (delivered=1).
     * @param {String} [params.message] - The message's text.
     * @param {updateMessageCallback} callback - The callback function.
     * */
    update: function(id, params, callback) {
        /**
         * Callback for QB.chat.message.update().
         * @param {Object} error - The error object.
         * @param {Object} response - Empty body.
         * @callback updateMessageCallback
         * */

        var attrAjax = {
            'type': 'PUT',
            'dataType': 'text',
            'url': Utils.getUrl(MESSAGES_API_URL, id),
            'data': params
        };

        this.service.ajax(attrAjax, callback);
    },

    /**
     * Delete message({@link https://docs.quickblox.com/docs/js-chat-messaging#delete-message read more}).
     * @memberof QB.chat.message
     * @param {String} id - The message id.
     * @param {Object} params - Object of parameters.
     * @param {deleteMessageCallback} callback - The callback function.
     * */
    delete: function(id, params_or_callback, callback) {
        /**
         * Callback for QB.chat.message.delete().
         * @param {Object} error - The error object.
         * @param {String} res - Empty string.
         * @callback deleteMessageCallback
         * */

        var ajaxParams = {
            url: Utils.getUrl(MESSAGES_API_URL, id),
            type: 'DELETE',
            dataType: 'text'
        };

        if (arguments.length === 2) {
            this.service.ajax(ajaxParams, params_or_callback);
        } else if (arguments.length === 3) {
            ajaxParams.data = params_or_callback;

            this.service.ajax(ajaxParams, callback);
        }
    },

    /**
     * Get unread messages counter for one or group of dialogs({@link https://docs.quickblox.com/docs/js-chat-dialogs#get-number-of-unread-messages read more}).
     * @memberof QB.chat.message
     * @param {Object} params - Object of parameters.
     * @param {unreadCountMessageCallback} callback - The callback function.
     * */
    unreadCount: function(params, callback) {
        /**
         * Callback for QB.chat.message.unreadCount().
         * @param {Object} error - The error object.
         * @param {Object} res - The requested dialogs Object.
         * @callback unreadCountMessageCallback
         * */

        if (params && params.chat_dialog_ids && Utils.isArray(params.chat_dialog_ids)) {
            params.chat_dialog_ids = params.chat_dialog_ids.join();
        }

        this.service.ajax({
            url: Utils.getUrl(MESSAGES_API_URL + '/unread'),
            data: params
        }, callback);
    }
};

module.exports = MessageProxy;

},{"../../qbConfig":252,"../../qbUtils":256}],238:[function(require,module,exports){
'use strict';

var Utils = require('../qbUtils');
var config = require('../qbConfig');

/**
 * Address Book
 * @namespace QB.addressbook
 */
function AddressBook(service) {
  this.service = service;
}

AddressBook.prototype = {
  /**
   * The method is used to create, update and delete contacts in address book.<br />
   * If contact doesn't exist in address book then it will be created. If contacts exists then it will be updated.
   * If pass 'destroy: 1' then the contact will be removed.<br />
   * {@link https://docs.quickblox.com/docs/js-address-book#upload-address-book Found more here}. <br />
   * The method accepts 2 or 3 parameters.
   * @memberof QB.addressbook
   * @param {Object[]} list - A list of contacts to create / update / delete.
   * @param {Object} [options]
   * @param {string} [options.udid] - User's device identifier. If specified all operations will be in this context. Max length 64 symbols.
   * If not - it means a user has one global address book across all his devices.
   * @param {number} [options.force] - Defines force rewrite mode.
   * If set 1 then all previous contacts for device context will be replaced by new ones.
   * @param {Function} callback - The savedAddressBookCallback function.
   *
   * @example
   *  var people = [{
   *    'name':'Frederic Cartwright',
   *    'phone': '8879108395'
   *  },
   *  {
   *    'phone': '8759108396',
   *    'destroy': 1
   *  }];
   *
   *  var options = {
   *    force: 1,
   *    udid: 'A337E8A4-80AD-8ABA-9F5D-579EFF6BACAB'
   *  };
   *
   *  function addressBookSaved(err, response) {
   *    if(err) {
   *
   *    } else {
   *      console.log('All constacts saved');
   *    }
   *  }
   *
   *  QB.addressbook.uploadAddressBook(addressBookList, savedAddressBookCallback);
   *  // or second parameters can be options
   *  QB.addressbook.uploadAddressBook(addressBookList, options, savedAddressBookCallback);
   *
   */
  uploadAddressBook: function(list, optionsOrcallback, callback) {
    if (!Array.isArray(list)) {
      new Error('First parameter must be an Array.');
      return;
    }

    var opts, cb;

    if(isFunction(optionsOrcallback)) {
      cb = optionsOrcallback;
    } else {
      opts = optionsOrcallback;
      cb = callback;
    }

    var data = { contacts: list };

    if(opts) {
      if(opts.force) {
        data.force = opts.force;
      }

      if(opts.udid) {
        data.udid = opts.udid;
      }
    }

    this.service.ajax({
      'type': 'POST',
      'url': Utils.getUrl(config.urls.addressbook),
      'data': data,
      'contentType': 'application/json; charset=utf-8',
      'isNeedStringify': true
    },function(err, res) {
      if (err) {
        cb(err, null);
      } else {
        cb(null, res);
      }
    });
  },

  _isFakeErrorEmptyAddressBook: function(err) {
    var errDetails = err.detail ? err.detail : err.message.errors;
    return err.code === 404 && errDetails[0] === 'Empty address book';
  },

  /**
   * Retrive all contacts from address book({@link https://docs.quickblox.com/docs/js-address-book#retrieve-address-book read more}).
   * The method accepts 1 or 2 parameters.
   * @memberof QB.addressbook
   * @param {string|function} udidOrCallback - You could pass udid of address book or
   * callback function if you want to get contacts from global address book.
   * @param {function} [callback] - Callback function is used as 2nd parameter if you pass udid as 1st parameters.
   * This callback takes 2 arguments: an error and a response.
   *
   * @example
   * var UDID = 'D337E8A4-80AD-8ABA-9F5D-579EFF6BACAB';
   *
   * function gotContacts(err, contacts) {
   *  contacts.forEach( (contact) => { alert(contact); })
   * }
   *
   * QB.addressbook.get(gotContacts);
   * // or you could specify what address book you need by udid
   * QB.addressbook.get(UDID, gotContacts);
   */
  get: function(udidOrCallback, callback) {
    var self = this;
    var udid, cb;

    if(isFunction(udidOrCallback)) {
      cb = udidOrCallback;
    } else {
      udid = udidOrCallback;
      cb = callback;
    }

    if(!isFunction(cb)) {
      throw new Error('The QB.addressbook.get accept callback function is required.');
    }

    var ajaxParams = {
      'type': 'GET',
      'url': Utils.getUrl(config.urls.addressbook),
      'contentType': 'application/json; charset=utf-8',
      'isNeedStringify': true
    };

    if(udid) {
      ajaxParams.data = {'udid': udid};
    }

    this.service.ajax(ajaxParams, function(err, res) {
      if (err) {
        // Don't ask me why.
        // Thanks to backend developers for this
        var isFakeErrorEmptyAddressBook = self._isFakeErrorEmptyAddressBook(err);

        if(isFakeErrorEmptyAddressBook) {
          cb(null, []);
        } else {
          cb(err, null);
        }
      } else {
        cb(null, res);
      }
    });
  },

  /**
   * Retrieve QuickBlox users that have phone numbers from your address book({@link https://docs.quickblox.com/docs/js-address-book#retrieve-registered-users read more}).
   * The methods accepts 1 or 2 parameters.
   * @memberof QB.addressbook
   * @param {boolean|function} udidOrCallback - You can pass isCompact parameter or callback object. If isCompact is passed then only user's id and phone fields will be returned from server. Otherwise - all standard user's fields will be returned.
   * @param {function} [callback] - Callback function is useв as 2nd parameter if you pass `isCompact` as 1st parameter.
   * This callback takes 2 arguments: an error and a response.
   */
  getRegisteredUsers: function(isCompactOrCallback, callback) {
    var self = this;
    var isCompact, cb;

    if(isFunction(isCompactOrCallback)) {
      cb = isCompactOrCallback;
    } else {
      isCompact = isCompactOrCallback;
      cb = callback;
    }

    if(!isFunction(cb)) {
      throw new Error('The QB.addressbook.get accept callback function is required.');
    }

    var ajaxParams = {
      'type': 'GET',
      'url': Utils.getUrl(config.urls.addressbookRegistered),
      'contentType': 'application/json; charset=utf-8'
    };

    if(isCompact) {
      ajaxParams.data = {'compact': 1};
    }

    this.service.ajax(ajaxParams, function(err, res) {
      if (err) {
        // Don't ask me why.
        // Thanks to backend developers for this
        var isFakeErrorEmptyAddressBook = self._isFakeErrorEmptyAddressBook(err);

        if(isFakeErrorEmptyAddressBook) {
          cb(null, []);
        } else {
          cb(err, null);
        }
      } else {
        cb(null, res);
      }
    });
  }
};

module.exports = AddressBook;

function isFunction(func) {
  return !!(func && func.constructor && func.call && func.apply);
}

},{"../qbConfig":252,"../qbUtils":256}],239:[function(require,module,exports){
'use strict';

var config = require('../qbConfig'),
    Utils = require('../qbUtils'),
    sha1 = require('crypto-js/hmac-sha1'),
    sha256 = require('crypto-js/hmac-sha256');

function AuthProxy(service) {
    this.service = service;
}

AuthProxy.prototype = {

    getSession: function(callback) {
        this.service.ajax({url: Utils.getUrl(config.urls.session)}, function(err,res){
            if (err) {
                callback(err, null);
            } else {
                callback (err, res);
            }
        });
    },

    createSession: function(params, callback) {
        if (config.creds.appId === '' ||
            config.creds.authKey === '' ||
            config.creds.authSecret === '') {
            throw new Error('Cannot create a new session without app credentials (app ID, auth key and auth secret)');
        }

        var _this = this,
            message;

        if (typeof params === 'function' && typeof callback === 'undefined') {
            callback = params;
            params = {};
        }

        // Signature of message with SHA-1 using secret key
        message = generateAuthMsg(params);
        message.signature = signMessage(message, config.creds.authSecret);

        this.service.ajax({url: Utils.getUrl(config.urls.session), type: 'POST', data: message},
            function(err, res) {
                if (err) {
                    callback(err, null);
                } else {
                    _this.service.setSession(res.session);
                    callback(null, res.session);
                }
            });
    },

    destroySession: function(callback) {
        var _this = this;

        this.service.ajax({url: Utils.getUrl(config.urls.session), type: 'DELETE', dataType: 'text'},
            function(err, res) {
                if (err) {
                    callback(err, null);
                } else {
                    _this.service.setSession(null);
                    callback(null, res);
                }
            });
    },

    login: function(params, callback) {
        var ajaxParams = {
            type: 'POST',
            url: Utils.getUrl(config.urls.login),
            data: params
        };

        function handleResponce(err, res) {
            if (err) {
              callback(err, null);
            } else {
              callback(null, res.user);
            }
        }

        this.service.ajax(ajaxParams,handleResponce);
    },

    logout: function(callback) {
        this.service.ajax({url: Utils.getUrl(config.urls.login), type: 'DELETE', dataType:'text'}, callback);
    }

};

module.exports = AuthProxy;

/* Private
---------------------------------------------------------------------- */
function generateAuthMsg(params) {
    var message = {
        application_id: config.creds.appId,
        auth_key: config.creds.authKey,
        nonce: Utils.randomNonce(),
        timestamp: Utils.unixTime()
    };

    // With user authorization
    if (params.login && params.password) {
        message.user = {login: params.login, password: params.password};
    } else if (params.email && params.password) {
        message.user = {email: params.email, password: params.password};
    } else if (params.provider) {
        // Via social networking provider (e.g. facebook, twitter etc.)
        message.provider = params.provider;
        if (params.scope) {
            message.scope = params.scope;
        }
        if (params.keys && params.keys.token) {
            message.keys = {token: params.keys.token};
        }
        if (params.keys && params.keys.secret) {
            message.keys.secret = params.keys.secret;
        }
    }

    return message;
}

function signMessage(message, secret) {
    var sessionMsg = Object.keys(message).map(function(val) {
        if (typeof message[val] === 'object') {
            return Object.keys(message[val]).map(function(val1) {
                return val + '[' + val1 + ']=' + message[val][val1];
            }).sort().join('&');
        } else {
            return val + '=' + message[val];
        }
    }).sort().join('&');


    var cryptoSessionMsg;
    
    if(config.hash === 'sha1') {
        cryptoSessionMsg = sha1(sessionMsg, secret).toString();
    } else if(config.hash === 'sha256') {
        cryptoSessionMsg = sha256(sessionMsg, secret).toString();
    } else {
        throw new Error('Quickblox SDK: unknown crypto standards, available sha1 or sha256');
    }

    return cryptoSessionMsg;
}

},{"../qbConfig":252,"../qbUtils":256,"crypto-js/hmac-sha1":51,"crypto-js/hmac-sha256":52}],240:[function(require,module,exports){
'use strict';

/*
 * QuickBlox JavaScript SDK
 *
 * Content module
 *
 * For an overview of this module and what it can be used for
 * see http://quickblox.com/modules/content
 *
 * The API itself is described at http://quickblox.com/developers/Content
 *
 */

var config = require('../qbConfig'),
    Utils = require('../qbUtils');

// For server-side applications through using npm package 'quickblox' you should include the following lines
var isBrowser = typeof window !== 'undefined';

/**
 * Content
 * @namespace QB.content
 **/
function ContentProxy(service) {
    this.service = service;
}

ContentProxy.prototype = {
    /**
     * Get a list of files for current user({@link https://docs.quickblox.com/docs/js-content#retrieve-files read more}).
     * @memberof QB.content
     * @param {object} params - Object of parameters.
     * @param {number} [params.page=1] - Used to paginate the results when more than one page of files retrieved.
     * @param {number} [params.per_page=10] - The maximum number of files to return per page, if not specified then the default is 10.
     * @param {listOfFilesCallback} callback - The listOfFilesCallback function.
     */
    list: function(params, callback) {
        /**
         * Callback for QB.content.list(params, callback).
         * @callback listOfFilesCallback
         * @param {object} error - The error object.
         * @param {object} response - Object with Array of files.
         */
        if (typeof params === 'function' && typeof callback === 'undefined') {
            callback = params;
            params = null;
        }

        this.service.ajax({url: Utils.getUrl(config.urls.blobs), data: params, type: 'GET'}, function(err,result){
            if (err) {
                callback(err, null);
            } else {
                callback (err, result);
            }
        });
    },

    /**
     * Create new file object.
     * @private
     * @memberof QB.content
     * @param {object} params - Object of parameters.
     * @param {string} params.content_type - The file's mime({@link https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Complete_list_of_MIME_types content type}).
     * @param {string} params.name - The file's name.
     * @param {boolean} [params.public=false] - The file's visibility. public means it will be possible to access this file without QuickBlox session token provided. Default is 'false'.
     * @param {createFileCallback} callback - The createFileCallback function.
     */
    create: function(params, callback) {
        /**
         * Callback for QB.content.create(params, callback).
         * @callback createFileCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object (blob-object-access).
         */
        this.service.ajax({
            type: 'POST',
            data: {blob: params},
            url: Utils.getUrl(config.urls.blobs)
        }, function(err, result) {
            if (err) {
                callback(err, null);
            } else {
                callback(err, result.blob);
            }
        });
    },

    /**
     * Delete file by id({@link https://docs.quickblox.com/docs/js-content#delete-file read more}).
     * @memberof QB.content
     * @param {Number} id - blob_id.
     * @param {deleteFileCallback} callback - The deleteFileCallback function.
     */
    delete: function(id, callback) {
        /**
         * Callback for QB.content.delete(id, callback).
         * @callback deleteFileCallback
         * @param {object} error - The error object.
         * @param {object} response - Boolean.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.blobs, id), type: 'DELETE', dataType: 'text'}, function(err, result) {
            if (err) {
                callback(err, null);
            } else {
                callback(null, true);
            }
        });
    },

    /**
     * Create file > upload file > mark file as uploaded > return result({@link https://docs.quickblox.com/docs/js-content#upload-file read more}).
     * @memberof QB.content
     * @param {object} params - Object of parameters.
     * @param {object} params.file - File object.
     * @param {string} params.name - The file's name.
     * @param {string} params.type - The file's mime ({@link https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Complete_list_of_MIME_types content type}).
     * @param {number} params.size - Size of file, in bytes.
     * @param {boolean} [params.public=false] - The file's visibility. public means it will be possible to access this file without QuickBlox session token provided. Default is 'false'.
     * @param {createAndUploadFileCallback} callback - The createAndUploadFileCallback function.
     */
    createAndUpload: function(params, callback) {
        /**
         * Callback for QB.content.createAndUpload(params, callback).
         * @callback createAndUploadFileCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object (blob-object-access).
         */
        var _this = this,
            createParams= {},
            file,
            name,
            type,
            size,
            fileId;

        var clonedParams = JSON.parse(JSON.stringify(params));

        clonedParams.file.data = "...";

        file = params.file;
        name = params.name || file.name;
        type = params.type || file.type;
        size = params.size || file.size;

        createParams.name = name;
        createParams.content_type = type;

        if (params.public) {
            createParams.public = params.public;
        }

        if (params.tag_list) {
            createParams.tag_list = params.tag_list;
        }

        // Create a file object
        this.create(createParams, function(err, createResult){
            if (err) {
                callback(err, null);
            } else {
                var uri = parseUri(createResult.blob_object_access.params),
                    uploadUrl = uri.protocol + "://" + uri.authority + uri.path,
                    uploadParams = {url: uploadUrl},
                    data = {};

                fileId = createResult.id;
                createResult.size = size;

                Object.keys(uri.queryKey).forEach(function(val) {
                    data[val] = decodeURIComponent(uri.queryKey[val]);
                });

                data.file = file;
                uploadParams.data = data;

                // Upload the file to Amazon S3
                _this.upload(uploadParams, function(err, result) {
                    if (err) {
                        callback(err, null);
                    } else {
                        // Mark file as uploaded
                        _this.markUploaded({
                            id: fileId,
                            size: size
                        }, function(err, result){
                            if (err) {
                                callback(err, null);
                            } else {
                                callback(null, createResult);
                            }
                        });
                    }
                });
            }
        });
    },

    /**
     * Upload a file to cloud storage.
     * @private
     * @memberof QB.content
     * @param {Object} params - Object of parameters (see into source code of QB.content.createAndUpload(params, callback) to know how to prepare the params object).
     * @param {string} params.url - File url.
     * @param {object} params.data - Formed data with file.
     * @param {uploadFileCallback} callback - The uploadFileCallback function.
     */
    upload: function(params, callback) {
        /**
         * Callback for QB.content.upload(params, callback).
         * @callback uploadFileCallback
         * @param {object} error - The error object.
         * @param {object} response - The empty object.
         */
        var uploadParams = {
            type: 'POST',
            dataType: 'text',
            contentType: false,
            url: params.url,
            data: params.data
        };

        this.service.ajax(uploadParams, function(err, xmlDoc) {
            if (err) {
                callback (err, null);
            } else {
                callback (null, {});
            }
        });
    },

    /**
     * Declare file uploaded. The file's 'status' field will be set to 'complete'.
     * @private
     * @memberof QB.content
     * @param {object} params - Object of parameters.
     * @param {number} params.blob_id - The id of file to declare as uploaded.
     * @param {number} params.size - Size of file, in bytes.
     * @param {markUploadedFileCallback} callback - The markUploadedFileCallback function.
     */
    markUploaded: function (params, callback) {
        /**
         * Callback for QB.content.markUploaded(params, callback).
         * @callback markUploadedFileCallback
         * @param {object} error - The error object.
         * @param {object} response - The empty body.
         */
        this.service.ajax({
            url: Utils.getUrl(config.urls.blobs, params.id + '/complete'),
            type: 'PUT',
            data: {
                size: params.size
            },
            dataType: 'text'
        }, function(err, res){
            if (err) {
                callback (err, null);
            } else {
                callback (null, res);
            }
        });
    },

    /**
     * Retrieve file object info by id({@link https://docs.quickblox.com/docs/js-content#get-file-info read more}).
     * @memberof QB.content
     * @param {number} id - File object id.
     * @param {getFileInfoByIdCallback} callback - The getFileInfoByIdCallback function return file's object.
     */
    getInfo: function (id, callback) {
        /**
         * Callback for QB.content.getInfo(id, callback).
         * @callback getFileInfoByIdCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object (blob-object-access).
         */
        this.service.ajax({url: Utils.getUrl(config.urls.blobs, id)}, function (err, res) {
            if (err) {
                callback (err, null);
            } else {
                callback (null, res);
            }
        });
    },

    /**
     * Download file by UID. If the file is public then it's possible to download it without a session token({@link https://docs.quickblox.com/docs/js-content#download-file-by-uid read more}).
     * @memberof QB.content
     * @param {String} uid - File object uid.
     * @param {downloadFileByUIDCallback} callback - The downloadFileByUIDCallback function.
     */
    getFile: function (uid, callback) {
        /**
         * Callback for QB.content.getFile(uid, callback).
         * @callback downloadFileByUIDCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.blobs, uid)}, function (err, res) {
            if (err) {
                callback (err, null);
            } else {
                callback (null, res);
            }
        });
    },

    /**
     * Edit a file by ID({@link https://docs.quickblox.com/docs/js-content#update-file read more}).
     * @memberof QB.content
     * @param {object} params - Object of parameters.
     * @param {number} params.id - File object id.
     * @param {string} [params.name] - New file name.
     * @param {updateFileCallback} callback - The updateFileCallback function.
     */
    update: function (params, callback) {
        /**
         * Callback for QB.content.update(uid, callback).
         * @callback updateFileCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object (blob-object-access).
         */
        var data = {};

        data.blob = {};

        if (typeof params.name !== 'undefined') {
            data.blob.name = params.name;
        }

        this.service.ajax({url: Utils.getUrl(config.urls.blobs, params.id), data: data}, function(err, res) {
            if (err) {
                callback (err, null);
            } else {
                callback (null, res);
            }
        });
    },

    /**
     * Get private URL for file download by file_uid (blob_uid) ({@link https://docs.quickblox.com/docs/js-content#get-private-url read more}).
     * @memberof QB.content
     * @param {String} fileUID - File object id.
     */
    privateUrl: function (fileUID) {
        return "https://" + config.endpoints.api + "/blobs/" + fileUID + "?token=" + this.service.getSession().token;
    },

    /**
     * Get public URL for file download by file_uid (blob_uid) ({@link https://docs.quickblox.com/docs/js-content#get-public-url read more}).
     * @memberof QB.content
     * @param {String} fileUID - File object id.
     */
    publicUrl: function (fileUID) {
        return "https://" + config.endpoints.api + "/blobs/" + fileUID;
    }

};

module.exports = ContentProxy;

// parseUri 1.2.2
// (c) Steven Levithan <stevenlevithan.com>
// MIT License
// http://blog.stevenlevithan.com/archives/parseuri
function parseUri (str) {
    var o   = parseUri.options,
        m   = o.parser[o.strictMode ? "strict" : "loose"].exec(str),
        uri = {},
        i   = 14;

    while (i--) {uri[o.key[i]] = m[i] || "";}

    uri[o.q.name] = {};
    uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {
        if ($1) {uri[o.q.name][$1] = $2;}
    });

    return uri;
}

parseUri.options = {
    strictMode: false,
    key: ["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],
    q: {
        name: "queryKey",
        parser: /(?:^|&)([^&=]*)=?([^&]*)/g
    },
    parser: {
        strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
        loose:  /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
    }
};

},{"../qbConfig":252,"../qbUtils":256}],241:[function(require,module,exports){
'use strict';

var config = require('../qbConfig');
var Utils = require('../qbUtils');

/**
 * Custom Objects Module
 * @namespace QB.data
 **/
function DataProxy(service){
    this.service = service;
}

DataProxy.prototype = {
    /**
     * Create new custom object({@link https://docs.quickblox.com/docs/js-custom-objects#create-records read more}).
     * 
     * @memberof QB.data
     * 
     * @param {string} className - A class name to which a new object belongs.
     * @param {object} data - Object of parameters (custom fields' names and their values).
     * @param {createDataCallback} callback - The createDataCallback function.
     * 
     * @example
     * var data = {
     *     'name': 'John',
     *     'age':'20',
     *     'family': [
     *         'Stark',
     *         'Targaryen'
     *     ]
     * };
     * 
     * function createdDataCallback(error, response) {
     *     if (error) {
     *         console.log(error);
     *     } else {
     *         console.log(response);
     *     }
     * }
     * 
     * QB.data.create('GameOfThrones', data, createdDataCallback);
     */
    create: function(className, data, callback) {
        /**
         * Callback for QB.data.create(className, data, callback).
         * @callback createDataCallback
         * @param {object} error - The error object.
         * @param {object} response - An object.
         */
        var ajaxParams = {
            'type': 'POST',
            'data': data,
            'isNeedStringify': true,
            'contentType': 'application/json; charset=utf-8',
            'url': Utils.getUrl(config.urls.data, className)
        };

        this.service.ajax(ajaxParams, function(err,res) {
            if (err) {
                callback(err, null);
            } else {
                callback (err, res);
            }
        });
    },

    /**
     * Search for records of particular class({@link https://docs.quickblox.com/docs/js-custom-objects#retrieve-records read more}).
     * 
     * @memberof QB.data
     * 
     * @param {string} className - A class name to which a new record belongs.
     * @param {(object|string[])} filters - Search records with field which contains exactly specified value or by array of records' ids to retrieve.
     * @param {number} [filters.skip=0] - Skip N records in search results. Useful for pagination. Default (if not specified) - 0.
     * @param {number} [filters.limit=100] - Limit search results to N records. Useful for pagination. Default and max values - 100. If limit is equal to -1 only last record will be returned.
     * @param {string} [filters.*] - {@link https://docs.quickblox.com/docs/js-custom-objects#search-operators See more filters' parameters}.
     * @param {listOfDataCallback} callback - The listOfDataCallback function.
     * @example
     * var filter = {
     *     'skip': 0,
     *     'limit': 100,
     *     'sort_desc': 'updated_at',
     *     'family': {
     *         'in': 'Stark,Targaryen'
     *     }
     * };
     *
     * var ids = ['53aaa06f535c12cea9007496', '53aaa06f535c12cea9007495'];
     *
     * // use filter or ids to get records:
     * QB.data.list('GameOfThrones', filter, function(error, response) {
     *     if (error) {
     *         console.log(error);
     *     } else {
     *         console.log(response);
     *     }
     * });
     */
    list: function(className, filters, callback) {
        /**
         * Callback for QB.data.list(className, filters, callback).
         * @callback listOfDataCallback
         * @param {object} error - The error object.
         * @param {object} response - Object with Array of files.
         */

        // make filters an optional parameter
        if (typeof callback === 'undefined' && typeof filters === 'function') {
            callback = filters;
            filters = null;
        }
        this.service.ajax({url: Utils.getUrl(config.urls.data, className), data: filters}, function(err,result){
            if (err) {
                callback(err, null);
            } else {
                callback (err, result);
            }
        });
    },

    /**
     * Update record by ID of particular class({@link https://docs.quickblox.com/docs/js-custom-objects#update-records Read more}).
     * @memberof QB.data
     * @param {string} className - A class name of record.
     * @param {object} data - Object of parameters.
     * @param {string} data._id - An ID of record to update.
     * @param {updateDataCallback} callback - The updateDataCallback function.
     * @example
     * QB.data.update('GameOfThrones', {
     *     '_id': '53aaa06f535c12cea9007496',
     *     'pull': {
     *         'family':'Stark'
     *     }
     * }, function(error, response) {
     *     if (error) {
     *         console.log(error);
     *     } else {
     *         console.log(response);
     *     }
     * });
     */
    update: function(className, data, callback) {
        /**
         * Callback for QB.data.update(className, data, callback).
         * @callback updateDataCallback
         * @param {object} error - The error object.
         * @param {object} response - An object.
         */
        this.service.ajax({
            'url': Utils.getUrl(config.urls.data, className + '/' + data._id),
            'type': 'PUT',
            'contentType': 'application/json; charset=utf-8',
            'isNeedStringify': true,
            'data': data
        }, function(err,result){
            if (err) {
                callback(err, null);
            } else {
                callback (err, result);
            }
        });
    },

    /**
     * Delete record/records by ID, IDs or criteria (filters) of particular class({@link https://docs.quickblox.com/docs/js-custom-objects#delete-records read more}).
     * 
     * @memberof QB.data
     * 
     * @param {string} className - A class name of record.
     * @param {(string|array|object)} requestedData - An ID of record or an array of record's ids or object of criteria rules to delete.
     * @param {deletedDataCallback} callback - The deletedDataCallback function.
     * 
     * @example
     * var className = 'Movie';
     * 
     * function deletedMovie(error, responce) {
     *   if(error) {
     *     throw new Error(error.toString());
     *   } else {
     *     console.log(`Deleted movies with ids: ${responce.deleted.toString()}`);
     *   }
     * }
     * 
     * // By ID, must be string
     * var id = '502f7c4036c9ae2163000002';
     * QB.data.delete(className, id, deletedMovie);
     * 
     * // By IDs, must be array
     * var ids = ['502f7c4036c9ae2163000002', '502f7c4036c9ae2163000003'];
     * QB.data.delete(className, ids, deletedMovie);
     * 
     * var criteria = { 'price': { 'gt': 100 };
     * function deletedMoviesByCriteria(error, responce) {
     *   if(error) {
     *      throw new Error(error.toString());
     *   } else {
     *      // Note! Deleted by creteria doesn't return ids of deleted objects
     *      console.log(`Deleted ${responce.deletedCount} movies`);
     *   }
     * }
     * QB.data.delete(className, criteria, deletedMoviesByCriteria);
     * 
     * 
     */
    delete: function(className, requestedData, callback) {
        /**
         * Callback for QB.data.delete(className, requestedData, callback).
         * @callback deletedDataCallback
         * @param {object} error - The error object.
         * @param {object|null} response
         * @param {array} response.deleted - Array of ids of deleted records. If you delete BY CRITERIA this property will be null.
         * @param {number} response.deletedCount - Count of deleted records.
         */
        var typesData = {
            id: 1,
            ids: 2,
            criteria: 3
        };

        var requestedTypeOf;

        var responceNormalized = {
            deleted: [],
            deletedCount: 0
        };

        var ajaxParams = {
            type: 'DELETE',
            dataType: 'text'
        };

        /** Define what type of data passed by client */
        if(typeof requestedData === 'string') {
            requestedTypeOf = typesData.id;
        } else if(Utils.isArray(requestedData)) {
            requestedTypeOf = typesData.ids;
        } else if(Utils.isObject(requestedData)) {
            requestedTypeOf = typesData.criteria;
        }

        if(requestedTypeOf === typesData.id) {
            ajaxParams.url = Utils.getUrl(config.urls.data, className + '/' + requestedData);
        } else if(requestedTypeOf === typesData.ids) {
            ajaxParams.url = Utils.getUrl(config.urls.data, className + '/' + requestedData.toString());
        } else if(requestedTypeOf === typesData.criteria) {
            ajaxParams.url = Utils.getUrl(config.urls.data, className + '/by_criteria');
            ajaxParams.data = requestedData;
        }

        function handleDeleteCO(error, result) {
            if (error) {
                callback(error, null);
            } else {
                var response;

                if(requestedTypeOf === typesData.id) {
                    responceNormalized.deleted.push(requestedData);
                    responceNormalized.deletedCount = responceNormalized.deleted.length;
                } else if(requestedTypeOf === typesData.ids) {
                    response = JSON.parse(result);
                    responceNormalized.deleted = response.SuccessfullyDeleted.ids.slice(0);
                    responceNormalized.deletedCount = responceNormalized.deleted.length;
                } else if(requestedTypeOf === typesData.criteria) {
                    response = JSON.parse(result);
                    responceNormalized.deleted = null;
                    responceNormalized.deletedCount = response.total_deleted;
                }

                callback (error, responceNormalized);
            }
        }

        this.service.ajax(ajaxParams, handleDeleteCO);
    },

    /**
     * Upload file to file field({@link https://docs.quickblox.com/docs/js-custom-objects#files read more}).
     * @memberof QB.data
     * @param {string} className - A class name to which a new object belongs.
     * @param {object} params - Object of parameters.
     * @param {string} [params.field_name] - The file's field name.
     * @param {string} [params.name] - The file's name.
     * @param {object} [params.file] - File object.
     * @param {uploadFileToDataCallback} callback - The uploadFileToDataCallback function.
     */
    uploadFile: function(className, params, callback) {
        /**
         * Callback for QB.data.uploadFile(className, params, callback).
         * @callback uploadFileToDataCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object.
         */
        var data = {
                field_name: params.field_name,
                file: {
                    data: params.file,
                    name: params.name
                }
            };

        this.service.ajax({
            'url': Utils.getUrl(config.urls.data, className + '/' + params.id + '/file'),
            'type': 'POST',
            'fileToCustomObject': true,
            'contentType': false,
            'data': data,
        }, function(err, result){
            if (err) {
                callback(err, null);
            } else {
                callback (err, result);
            }
        });
    },

    /**
     * Download file from file field by ID({@link https://docs.quickblox.com/docs/js-custom-objects#download-file read more}).
     * @memberof QB.data
     * @param {string} className - A class name of record.
     * @param {object} params - Object of parameters.
     * @param {string} params.field_name - The file's field name.
     * @param {string} params.id - The record's ID.
     * @param {downloadFileFromDataCallback} callback - The downloadFileFromDataCallback function.
     */
    downloadFile: function(className, params, callback) {
        /**
         * Callback for QB.data.downloadFile(className, params, callback).
         * @callback downloadFileFromDataCallback
         * @param {object} error - The error object.
         * @param {object} response - The file object.
         */
        var result = Utils.getUrl(config.urls.data, className + '/' + params.id + '/file');
        result += '?field_name=' + params.field_name + '&token=' + this.service.getSession().token;
        callback(null, result);
    },

    /**
     * Return file's URL from file field by ID.
     * @memberof QB.data
     * @param {string} className - A class name of record.
     * @param {object} params - Object of parameters.
     * @param {string} params.field_name - The file's field name.
     * @param {string} params.id - The record's ID.
     */
    fileUrl: function(className, params) {
        var result = Utils.getUrl(config.urls.data, className + '/' + params.id + '/file');
        result += '?field_name=' + params.field_name + '&token=' + this.service.getSession().token;
        return result;
    },

    /**
     * Delete file from file field by ID({@link https://docs.quickblox.com/docs/js-custom-objects#delete-file read more}).
     * @memberof QB.data
     * @param {string} className - A class name of record.
     * @param {object} params - Object of parameters.
     * @param {string} params.field_name - The file's field name.
     * @param {string} params.id - The record's ID.
     * @param {deleteFileFromDataCallback} callback - The deleteFileFromDataCallback function.
     */
    deleteFile: function(className, params, callback) {
        /**
         * Callback for QB.data.deleteFile(className, params, callback).
         * @callback deleteFileFromDataCallback
         * @param {object} error - The error object.
         * @param {object} response - Empty body.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.data, className + '/' + params.id + '/file'), data: {field_name: params.field_name},
            dataType: 'text', type: 'DELETE'}, function(err, result) {
            if (err) {
                callback(err, null);
            } else {
                callback (err, true);
            }
        });
    }

};

module.exports = DataProxy;

},{"../qbConfig":252,"../qbUtils":256}],242:[function(require,module,exports){
(function (Buffer){(function (){
'use strict';

/*
 * QuickBlox JavaScript SDK
 *
 * Push Notifications Module
 *
 */

var config = require('../qbConfig'),
    Utils = require('../qbUtils');

var isBrowser = typeof window !== "undefined";

function PushNotificationsProxy(service) {
    this.service = service;
    this.subscriptions = new SubscriptionsProxy(service);
    this.events = new EventsProxy(service);

    this.base64Encode = function(str) {
        if (isBrowser) {
            return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function(match, p1) {
                return String.fromCharCode('0x' + p1);
            }));
        } else {
            return new Buffer(str).toString('base64');
        }
    };
}

/**
 * Push Notifications Subscriptions
 * @namespace QB.pushnotifications.subscriptions
 **/
function SubscriptionsProxy(service){
    this.service = service;
}

SubscriptionsProxy.prototype = {

    /**
     * Create device based subscription.
     * @memberof QB.pushnotifications.subscriptions
     * @param {object} params - Object of parameters.
     * @param {string} params.notification_channel - Declare which notification channels could be used to notify user about events. Allowed values: apns, apns_voip, gcm, mpns, bbps and email.
     * @param {object} params.push_token - Object of parameters.
     * @param {string} params.push_token.environment - Determine application mode. It allows conveniently separate development and production modes. Allowed values: evelopment or production.
     * @param {string} [params.push_token.bundle_identifier] - A unique identifier for client's application. In iOS, this is the Bundle Identifier. In Android - package id.
     * @param {string} params.push_token.client_identification_sequence - Identifies client device in 3-rd party service like APNS, GCM/FCM, BBPS or MPNS. Initially retrieved from 3-rd service and should be send to QuickBlox to let it send push notifications to the client.
     * @param {object} params.device - Object of parameters.
     * @param {string} params.device.platform - Platform of device, which is the source of application running. Allowed values: ios, android, windows_phone, blackberry.
     * @param {string} params.device.udid - UDID (Unique Device identifier) of device, which is the source of application running. This must be anything sequence which uniquely identify particular device. This is needed to support schema: 1 User - Multiple devices.
     * @param {createPushSubscriptionCallback} callback - The createPushSubscriptionCallback function.
     */
    create: function(params, callback) {
        /**
         * Callback for QB.pushnotifications.subscriptions.create(params, callback).
         * @callback createPushSubscriptionCallback
         * @param {object} error - The error object.
         * @param {object} response - Array of all existent user's subscriptions.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.subscriptions), type: 'POST', data: params}, callback);
    },

    /**
     * Retrieve subscriptions for the user which is specified in the session token.
     * @memberof QB.pushnotifications.subscriptions
     * @param {listPushSubscriptionCallback} callback - The listPushSubscriptionCallback function.
     */
    list: function(callback) {
        /**
         * Callback for QB.pushnotifications.subscriptions.list(callback).
         * @callback listPushSubscriptionCallback
         * @param {object} error - The error object.
         * @param {object} response - Array of all existent user's subscriptions.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.subscriptions)}, callback);
    },

    /**
     * Remove a subscription by its identifier.
     * @memberof QB.pushnotifications.subscriptions
     * @param {number} id - An id of subscription to remove.
     * @param {deletePushSubscriptionCallback} callback - The deletePushSubscriptionCallback function.
     */
    delete: function(id, callback) {
        /**
         * Callback for QB.pushnotifications.subscriptions.delete(id, callback).
         * @callback deletePushSubscriptionCallback
         * @param {object} error - The error object.
         * @param {object} response - Empty body.
         */
        var attrAjax = {
            'type': 'DELETE',
            'dataType': 'text',
            'url': Utils.getUrl(config.urls.subscriptions, id)
        };

        this.service.ajax(attrAjax, function(err, res){
            if (err) {
                callback(err, null);
            } else {
                callback(null, true);
            }
        });
    }
};

/**
 * Push Notifications Events
 * @namespace QB.pushnotifications.events
 **/
function EventsProxy(service){
    this.service = service;
}

EventsProxy.prototype = {
    /**
     * Create notification event. This request will immediately produce notification delivery (push notification or email) ({@link https://docs.quickblox.com/docs/js-push-notifications#send-push-notifications read more}).
     * @memberof QB.pushnotifications.events
     *
     * @param {object} params - Object of parameters.
     * @param {string} params.notification_type - Type of notification. Allowed values: push or email.
     * @param {string} params.environment - An environment of the notification. Allowed values: development or production.
     * @param {string} params.message - A payload of event. For push notifications: if event[push_type] not present - should be Base64 encoded text.
     *
     * @param {string} [params.push_type] - Push Notification type. Used only if event[notification_type] = push, ignored in other cases. If not present - Notification will be delivered to all possible devices for specified users. Each platform has their own standard format. If specified - Notification will be delivered to the specified platform only. Allowed values: apns, apns_voip, gcm, mpns or bbps.
     * @param {string} [params.event_type] - Allowed values: one_shot, fixed_date or period_date. one_shot - a one-time event, which causes by an external object (the value is only valid if the 'date' is not specified). fixed_date - a one-time event, which occurs at a specified 'date' (the value is valid only if the 'date' is given). period_date - reusable event that occurs within a given 'period' from the initial 'date' (the value is only valid if the 'period' specified). By default: fixed_date, if 'date' is specified. period_date, if 'period' is specified. one_shot, if 'date' is not specified.
     * @param {string} [params.name] - The name of the event. Service information. Only for your own usage.
     * @param {number} [params.period] - The period of the event in seconds. Required if the event[event_type] = period_date. Possible values: 86400 (1 day). 604800 (1 week). 2592000 (1 month). 31557600 (1 year).
     * @param {number} [params.date] - The date of the event to send on. Required if event[event_type] = fixed_date or period_date. If event[event_type] = fixed_date, the date can not be in the pas.
     *
     * @param {object} [params.user] - User's object of parameters.
     * @param {number[]} [params.user.ids] - Notification's recipients - should contain a string of users' ids divided by commas.
     * @param {object} [params.user.tags] - User's object of tags.
     * @param {string[]} [params.user.tags.any] - Notification's recipients - should contain a string of tags divided by commas. Recipients (users) must have at least one tag that specified in the list.
     * @param {string[]} [params.user.tags.all] - Notification's recipients - should contain a string of tags divided by commas. Recipients (users) must exactly have only all tags that specified in list.
     * @param {string[]} [params.user.tags.exclude] - Notification's recipients - should contain a string of tags divided by commas. Recipients (users) mustn't have tags that specified in list.
     *
     * @param {object} [params.external_user] - External user's object of parameters.
     * @param {number[]} [params.external_user.ids] - Notification's recipients - should contain a string of tags divided by commas. Recipients (users) mustn't have tags that specified in list.
     *
     * @param {createPushEventCallback} callback - The createPushEventCallback function.
     */
    create: function(params, callback) {
        /**
         * Callback for QB.pushnotifications.events.create(params, callback).
         * @callback createPushEventCallback
         * @param {object} error - The error object.
         * @param {object} response - An event object.
         */
        this.service.ajax({
            'url': Utils.getUrl(config.urls.events),
            'type': 'POST',
            'contentType': 'application/json; charset=utf-8',
            'isNeedStringify': true,
            'data': {
                'event': params
            }
        }, callback);
    },

    /** 
     * Get list of events which were created by current user.
     * @memberof QB.pushnotifications.events
     * @param {object} params - Object of parameters.
     * @param {number} [params.page=1] - Used to paginate the results when more than one page of events retrieved.
     * @param {number} [params.per_page=10] - The maximum number of events to return per page, if not specified then the default is 10.
     * @param {listPushEventsCallback} callback - The listOfFilesCallback function.
     */
    list: function(params, callback) {
        /**
         * Callback for QB.pushnotifications.events.list(params, callback).
         * @callback listPushEventsCallback
         * @param {object} error - The error object.
         * @param {object} response - An array of events' objects.
         */
        if (typeof params === 'function' && typeof callback ==='undefined') {
            callback = params;
            params = null;
        }

        this.service.ajax({url: Utils.getUrl(config.urls.events), data: params}, callback);
    },

    /** 
     * Retrieve an event by ID.
     * @memberof QB.pushnotifications.events
     * @param {number} id - An id of event to retrieve.
     * @param {getPushEventByIdCallback} callback - The getPushEventByIdCallback function.
     */
    get: function(id, callback) {
        /**
         * Callback for QB.pushnotifications.events.get(id, callback).
         * @callback getPushEventByIdCallback
         * @param {object} error - The error object.
         * @param {object} response - An array of events' objects.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.events, id)}, callback);
    },

    /** 
     * Delete an event by ID.
     * @memberof QB.pushnotifications.events
     * @param {number} id - An id of event to delete.
     * @param {deletePushEventByIdCallback} callback - The deletePushEventByIdCallback function.
     */
    delete: function(id, callback) {
        /**
         * Callback for QB.pushnotifications.events.delete(id, callback).
         * @callback deletePushEventByIdCallback
         * @param {object} error - The error object.
         * @param {object} response - Empty body.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.events, id), dataType: 'text', type: 'DELETE'}, callback);
    },

    /** 
     * Retrieve an event's status by ID
     * @memberof QB.pushnotifications.events
     * @param {number} id - An id of event to retrieve its status.
     * @param {getPushEventStatusByIdCallback} callback - The getPushEventStatusByIdCallback function.
     */
    status: function(id, callback) {
        /**
         * Callback for QB.pushnotifications.events.status(id, callback).
         * @callback getPushEventStatusByIdCallback
         * @param {object} error - The error object.
         * @param {object} response - An array of events' objects.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.events, id + '/status')}, callback);
    }
};

module.exports = PushNotificationsProxy;

}).call(this)}).call(this,require("buffer").Buffer)
},{"../qbConfig":252,"../qbUtils":256,"buffer":47}],243:[function(require,module,exports){
'use strict';

/*
 * QuickBlox JavaScript SDK
 *
 * Users Module
 *
 */

var config = require('../qbConfig'),
    Utils = require('../qbUtils');

var DATE_FIELDS = ['created_at', 'updated_at', 'last_request_at'];
var NUMBER_FIELDS = ['id', 'external_user_id'];

var resetPasswordUrl = config.urls.users + '/password/reset';

/**
 * @namespace QB.users
 **/
function UsersProxy(service) {
    this.service = service;
}

UsersProxy.prototype = {

    /**
     * Call this API to get a list of current users of you app. By default it returns upto 10 users, but you can change this by adding pagination parameters. You can filter the list of users by supplying a filter string. You can sort results by ask/desc({@link https://docs.quickblox.com/docs/js-users#retrieve-users read more}).
     * @memberof QB.users
     * @param {object} params - Object of parameters.
     * @param {number} [params.page=1] - Used to paginate the results when more than one page of users retrieved.
     * @param {number} [params.per_page=10] - The maximum number of users to return per page, if not specified then the default is 10.
     * @param {string} [params.filter] - You can filter the list of users by supplying a {@link https://docs.quickblox.com/docs/js-users#search-operators filter string}. Possible operators: gt, lt, ge, le, eq, ne, between, in. Allowed fields' types: string,number,date. Allowed fields: id, full_name, email, login, phone, website, created_at, updated_at, last_request_at, external_user_id, twitter_id, twitter_digits_id, facebook_id (example: 'field_type+field_name+operator+value').
     * @param {string} [params.order] - Parameter to sort results. Possible values: asc and desc. Allowed fields' types: string,number,date. Allowed fields: id, full_name, email, login, phone, website, created_at, updated_at, last_request_at, external_user_id, twitter_id, twitter_digits_id, facebook_id ('asc+date+created_at' (format is 'sort_type+field_type+field_name')).
     * @param {listUsersCallback} callback - The listUsersCallback function.
     */
    listUsers: function(params, callback) {
        /**
         * Callback for QB.users.listUsers(params, callback).
         * @callback listUsersCallback
         * @param {object} error - The error object.
         * @param {object} response - Object with Array of users.
         */
        var message = {}, filters = [], item;

        if (typeof params === 'function' && typeof callback === 'undefined') {
            callback = params;
            params = {};
        }

        if (params && params.filter) {
            if (Utils.isArray(params.filter)) {
                params.filter.forEach(function(el) {
                    item = generateFilter(el);
                    filters.push(item);
                });
            } else {
                item = generateFilter(params.filter);
                filters.push(item);
            }
            message.filter = filters;
        }

        if (params.order) {
            message.order = generateOrder(params.order);
        }

        if (params.page) {
            message.page = params.page;
        }

        if (params.per_page) {
            message.per_page = params.per_page;
        }

        this.service.ajax({
            url: Utils.getUrl(config.urls.users), data: message}, callback);
    },

    /**
     * Retrieve a specific user or users.
     * @memberof QB.users
     * @param {(number|object)} params - User ID (number) or object of parameters (object with one of next required properties).
     * @param {string} params.login - The login of the user to be retrieved({@link https://docs.quickblox.com/docs/js-users#retrieve-user-by-login read more}).
     * @param {string} params.full_name - The full name of users to be retrieved({@link https://docs.quickblox.com/docs/js-users#retrieve-users-by-full-name read more}).
     * @param {string} params.facebook_id - The user's facebook uid.
     * @param {string} params.twitter_id - The user's twitter uid.
     * @param {string} params.phone - The user's phone number({@link https://docs.quickblox.com/docs/js-users#retrieve-users-by-phone-number read more}).
     * @param {string} params.email - The user's email address({@link https://docs.quickblox.com/docs/js-users#retrieve-user-by-email read more}).
     * @param {(string|string[])} params.tags - A comma separated list of tags associated with users({@link https://docs.quickblox.com/docs/js-users#retrieve-users-by-tags read more}).
     * @param {(number|string)} params.external - An uid that represents the user in an external user registry({@link https://docs.quickblox.com/docs/js-users#retrieve-user-by-external-user-id read more}).
     * @param {string} [params.page=1] - Used to paginate the results when more than one page of users retrieved (can be used with get by 'full_name' or 'tags').
     * @param {string} [params.per_page=10] - The maximum number of users to return per page, if not specified then the default is 10 (can be used with get by 'full_name' or 'tags').
     * @param {getUsersCallback} callback - The getUsersCallback function.
     * @example
     * var params = {'email': 'example-email@gmail.com'};
     *
     * // for search by 'full_name' or 'tags':
     * // var params = {
     * //     'full_name': 'test_user',
     * //     'page': 2,
     * //     'per_page': 25
     * // };
     *
     * // for search by user's ID:
     * // var id = 53454;
     *
     * // use params or id to get records:
     * QB.users.get(params, function(error, response) {
     *     if (error) {
     *         console.log(error);
     *     } else {
     *         console.log(response);
     *     }
     * });
     */
    get: function(params, callback) {
        /**
         * Callback for QB.users.get(params, callback).
         * @callback getUsersCallback
         * @param {object} error - The error object.
         * @param {object} response - The user object or object with Array of users.
         */
        var url;

        if (typeof params === 'number') {
            url = params;
            params = {};
        } else {
            if (params.login) {
                url = 'by_login';
            } else if (params.full_name) {
                url = 'by_full_name';
            } else if (params.facebook_id) {
                url = 'by_facebook_id';
            } else if (params.twitter_id) {
                url = 'by_twitter_id';
            } else if (params.phone) {
                url = 'phone';
            } else if (params.email) {
                url = 'by_email';
            } else if (params.tags) {
                url = 'by_tags';
            } else if (params.external) {
                url = 'external/' + params.external;
                params = {};
            }
        }

        this.service.ajax({url: Utils.getUrl(config.urls.users, url), data: params},
            function(err, res) {
                if (err) {
                    callback(err, null);
                } else {
                    callback(null, res.user || res);
                }
            });
    },

    /**
     * Registers a new app user. Call this API to register a user for the app. You must provide either a user login or email address along with their password, passing both email address and login is permitted but not required({@link https://docs.quickblox.com/docs/js-users#create-user read more}).
     * @memberof QB.users
     * @param {object} params - Object of user's parameters.
     * @param {string} params.login - The user's login name.
     * @param {string} params.password - The user's password for this app.
     * @param {string} params.email - The user's email address.
     * @param {string} [params.full_name] - The user's full name.
     * @param {string} [params.phone] - The user's phone number.
     * @param {string} [params.website] - The user's web address, or other url.
     * @param {string} [params.facebook_id] - The user's facebook uid.
     * @param {string} [params.twitter_id] - The user's twitter uid.
     * @param {number} [params.blob_id] - The id of an associated blob for this user, for example their photo.
     * @param {(number|string)} [params.external_user_id] - An uid that represents the user in an external user registry.
     * @param {(string|string[])} [params.tag_list] - A comma separated list of tags associated with the user. Set up user tags and address them separately in your app.
     * @param {string} [params.custom_data] - The user's additional info.
     * @param {createUserCallback} callback - The createUserCallback function.
     */
    create: function(params, callback) {
        /**
         * Callback for QB.users.create(params, callback).
         * @callback createUserCallback
         * @param {object} error - The error object.
         * @param {object} response - The user object.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.users), type: 'POST', data: {user: params}},
            function(err, res) {
                if (err) {
                    callback(err, null);
                } else {
                    callback(null, res.user);
                }
            });
    },

    /**
     * Update current user. In normal usage, nobody except the user is allowed to modify their own data. Any fields you don’t specify will remain unchanged, so you can update just a subset of the user’s data. login/email and password may be changed, but the new login/email must not already be in use({@link https://docs.quickblox.com/docs/js-users#update-user read more}).
     * @memberof QB.users
     * @param {number} id - The id of user to update.
     * @param {object} params - object of user's parameters.
     * @param {string} [params.login] - The user's login name.
     * @param {string} [params.old_password] - The user's old password for this app.
     * @param {string} [params.password] - The user's new password for this app.
     * @param {string} [params.email] - The user's email address.
     * @param {string} [params.full_name] - The user's full name.
     * @param {string} [params.phone] - The user's phone number.
     * @param {string} [params.website] - The user's web address, or other url.
     * @param {string} [params.facebook_id] - The user's facebook uid.
     * @param {string} [params.twitter_id] - The user's twitter uid.
     * @param {number} [params.blob_id] - The id of an associated blob for this user, for example their photo.
     * @param {(number|string)} [params.external_user_id] - An uid that represents the user in an external user registry.
     * @param {(string|string[])} [params.tag_list] - A comma separated list of tags associated with the user. Set up user tags and address them separately in your app.
     * @param {string} [params.custom_data] - The user's additional info.
     * @param {updateUserCallback} callback - The updateUserCallback function.
     */
    update: function(id, params, callback) {
        /**
         * Callback for QB.users.update(id, params, callback).
         * @callback updateUserCallback
         * @param {object} error - The error object.
         * @param {object} response - The user object.
         */
        this.service.ajax({url: Utils.getUrl(config.urls.users, id), type: 'PUT', data: {user: params}},
            function(err, res) {
                if (err) {
                    callback(err, null);
                } else {
                    callback(null, res.user);
                }
            });
    },

    /**
     * Remove a user from the app, {@linkhttps://docs.quickblox.com/docs/js-users#delete-user by user's id} or uid that represents the user in an external user registry.
     * @memberof QB.users
     * @param {(number|object)} params - An id of user to remove or object with external user id.
     * @param {(number|string)} params.external - An id of user to remove or object with external user id.
     * @param {deleteUserCallback} callback - An uid that represents the user in an external user registry.
     * @example
     * // parameter as user id:
     * var params = 567831;
     *
     * // parameter as external user id:
     * // var params = {'external': 'ebdf831abd12da4bcf12f22d'};
     *
     * QB.users.delete(params, function(error, response) {
     *     if (error) {
     *         console.log(error);
     *     } else {
     *         console.log(response);
     *     }
     * });
     */
    delete: function(params, callback) {
        /**
         * Callback for QB.users.delete(params, callback).
         * @callback deleteUserCallback
         * @param {object} error - The error object.
         * @param {object} response - Empty body.
         */
        var url;

        if (typeof params === 'number') {
            url = params;
        } else {
            if (params.external) {
                url = 'external/' + params.external;
            }
        }

        this.service.ajax({url: Utils.getUrl(config.urls.users, url), type: 'DELETE', dataType: 'text'}, callback);
    },

    /**
     * You can initiate password resets for users who have emails associated with their account. Password reset instruction will be sent to this email address({@link https://docs.quickblox.com/docs/js-users#reset-user-password read more}).
     * @memberof QB.users
     * @param {string} email - The user's email to send reset password instruction.
     * @param {resetPasswordByEmailCallback} callback - The resetPasswordByEmailCallback function.
     */
    resetPassword: function(email, callback) {
        /**
         * Callback for QB.users.resetPassword(email, callback).
         * @callback resetPasswordByEmailCallback
         * @param {object} error - The error object.
         * @param {object} response - Empty body.
         */
        this.service.ajax({url: Utils.getUrl(resetPasswordUrl), data: {email: email}, dataType: 'text'}, callback);
    }

};

module.exports = UsersProxy;

/* Private
---------------------------------------------------------------------- */
function generateFilter(obj) {
    var type = obj.field in DATE_FIELDS ? 'date' : typeof obj.value;

    if (Utils.isArray(obj.value)) {
        if (type === 'object') {
            type = typeof obj.value[0];
        }
        obj.value = obj.value.toString();
    }

    return [type, obj.field, obj.param, obj.value].join(' ');
}

function generateOrder(obj) {
    var type = obj.field in DATE_FIELDS ? 'date' : obj.field in NUMBER_FIELDS ? 'number' : 'string';
    return [obj.sort, type, obj.field].join(' ');
}

},{"../qbConfig":252,"../qbUtils":256}],244:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC peer connection model)
 */

/** Modules */
var config = require('../../qbConfig');
var Helpers = require('./qbWebRTCHelpers');

/**
 * @namespace QB.webrtc.RTCPeerConnection
 */

/**
 * @function qbRTCPeerConnection
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {RTCConfiguration} [config]
 */
var qbRTCPeerConnection = function qbRTCPeerConnection(config) {
    this._pc = new window.RTCPeerConnection(config);
    this.remoteStream = undefined;
    this.preferredCodec = 'VP8';
};

qbRTCPeerConnection.State = {
    NEW: 1,
    CONNECTING: 2,
    CHECKING: 3,
    CONNECTED: 4,
    DISCONNECTED: 5,
    FAILED: 6,
    CLOSED: 7,
    COMPLETED: 8
};

qbRTCPeerConnection.prototype._init = function (delegate, userID, sessionID, polite) {
    Helpers.trace('RTCPeerConnection init.',
        'userID: ', userID,
        ', sessionID: ', sessionID,
        ', polite: ', polite
    );

    this.delegate = delegate;
    this.localIceCandidates = [];
    this.remoteIceCandidates = [];
    /** @type {RTCSessionDescriptionInit|undefined} */
    this.remoteSDP = undefined;
    this.sessionID = sessionID;
    this.polite = polite;
    this.userID = userID;
    this._reconnecting = false;

    this.state = qbRTCPeerConnection.State.NEW;

    this._pc.onicecandidate = this.onIceCandidateCallback.bind(this);
    this._pc.onsignalingstatechange = this.onSignalingStateCallback.bind(this);
    this._pc.oniceconnectionstatechange = this.onIceConnectionStateCallback.bind(this);
    this._pc.ontrack = this.onTrackCallback.bind(this);

    /**
     * We use this timer to dial a user -
     * produce the call requests each N seconds.
     */
    this.dialingTimer = null;
    /** We use this timer to wait for answer from callee */
    this.answerTimeInterval = 0;
    this.statsReportTimer = null;

};

qbRTCPeerConnection.prototype.release = function () {
    this._clearDialingTimer();
    this._clearStatsReportTimer();

    this._pc.close();
    this.state = qbRTCPeerConnection.State.CLOSED;

    this._pc.onicecandidate = null;
    this._pc.onsignalingstatechange = null;
    this._pc.oniceconnectionstatechange = null;
    this._pc.ontrack = null;
    if (navigator.userAgent.includes("Edge")) {
        this.connectionState = 'closed';
        this.iceConnectionState = 'closed';
    }
};

qbRTCPeerConnection.prototype.negotiate = function () {
    var self = this;
    return this.setLocalSessionDescription({
        type: 'offer',
        options: { iceRestart: true }
    }, function (error) {
        if (error) {
            return Helpers.traceError("Error in 'negotiate': " + error);
        }
        var description = self._pc.localDescription.toJSON();
        self.delegate.update({
            reason: 'reconnect',
            sessionDescription: {
                offerId: self.offerId,
                sdp: description.sdp,
                type: description.type
            }
        }, self.userID);
    });
};

/**
 * Save remote SDP for future use.
 * @function setRemoteSDP
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {RTCSessionDescriptionInit} newSDP 
 */
qbRTCPeerConnection.prototype.setRemoteSDP = function (newSDP) {
    if (!newSDP) {
        throw new Error("sdp string can't be empty.");
    } else {
        this.remoteSDP = newSDP;
    }
};

/**
 * Returns SDP if it was set previously.
 * @function getRemoteSDP
 * @memberOf QB.webrtc.RTCPeerConnection
 * @returns {RTCSessionDescriptionInit|undefined}
 */
qbRTCPeerConnection.prototype.getRemoteSDP = function () {
    return this.remoteSDP;
};

/**
 * Create offer or answer SDP and set as local description.
 * @function setLocalSessionDescription
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {Object} params
 * @param {'answer'|'offer'} params.type 
 * @param {RTCOfferOptions} [params.options] 
 * @param {Function} callback 
 */
qbRTCPeerConnection.prototype.setLocalSessionDescription = function (params, callback) {
    var self = this;

    self.state = qbRTCPeerConnection.State.CONNECTING;

    var supportsSetCodecPreferences = window.RTCRtpTransceiver &&
      'setCodecPreferences' in window.RTCRtpTransceiver.prototype &&
      Boolean(Helpers.getVersionSafari());

    if (supportsSetCodecPreferences) {
        self._pc.getTransceivers().forEach(function (transceiver) {
            var kind = transceiver.sender.track.kind;
            var sendCodecs = window.RTCRtpSender.getCapabilities(kind).codecs;
            var recvCodecs = window.RTCRtpReceiver.getCapabilities(kind).codecs;
            if (kind === 'video') {
                var preferredCodecSendIndex = sendCodecs.findIndex(function(codec) {
                    return codec
                        .mimeType
                        .toLowerCase()
                        .includes(self.preferredCodec.toLowerCase());
                    });
                if (preferredCodecSendIndex !== -1) {
                    var arrayWithPreferredSendCodec = sendCodecs.splice(
                        preferredCodecSendIndex,
                        1
                    );
                    sendCodecs.unshift(arrayWithPreferredSendCodec[0]);
                }
                var preferredCodecRecvIndex = recvCodecs.findIndex(function(codec) {
                    return codec
                        .mimeType
                        .toLowerCase()
                        .includes(self.preferredCodec.toLowerCase());
                    });
                if (preferredCodecRecvIndex !== -1) {
                    var arrayWithPreferredRecvCodec = recvCodecs.splice(
                        preferredCodecRecvIndex,
                        1
                    );
                    recvCodecs.unshift(arrayWithPreferredRecvCodec[0]);
                }
                transceiver.setCodecPreferences(sendCodecs.concat(recvCodecs));
            }
        });
    }

    /** 
     * @param {RTCSessionDescriptionInit} description 
     */
    function successCallback(description) {
        var modifiedDescription = _removeExtmapMixedFromSDP(description);
        modifiedDescription.sdp = setPreferredCodec(
            modifiedDescription.sdp,
            'video',
            self.preferredCodec
        );
        if (self.delegate.bandwidth) {
            modifiedDescription.sdp = setMediaBitrate(
                modifiedDescription.sdp,
                'video',
                self.delegate.bandwidth
            );
        }
        self._pc.setLocalDescription(modifiedDescription)
            .then(function () {
                callback(null);
            }).
            catch(function (error) {
                Helpers.traceError(
                    "Error in 'setLocalSessionDescription': " + error
                );
                callback(error);
            });
    }

    if (params.type === 'answer') {
        this._pc.createAnswer(params.options)
            .then(successCallback)
            .catch(callback);
    } else {
        this._pc.createOffer(params.options)
            .then(successCallback)
            .catch(callback);
    }
};

/**
 * Set remote session description.
 * @function setRemoteSessionDescription
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {RTCSessionDescriptionInit} description 
 * @param {Function} callback 
 * @returns {void}
 */
qbRTCPeerConnection.prototype.setRemoteSessionDescription = function (
    description,
    callback
) {
    var modifiedSDP = this.delegate.bandwidth ? {
        type: description.type,
        sdp: setMediaBitrate(description.sdp, 'video', this.delegate.bandwidth)
    } : description;

    this._pc.setRemoteDescription(modifiedSDP)
        .then(function () { callback(); })
        .catch(function (error) {
            Helpers.traceError(
                "Error in 'setRemoteSessionDescription': " + error
            );
            callback(error);
        });
};

/**
 * Add local stream.
 * @function addLocalStream
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {MediaStream} stream
 */
qbRTCPeerConnection.prototype.addLocalStream = function (stream) {
    if (!stream) {
        throw new Error("'qbRTCPeerConnection.addLocalStream' error: stream is not defined");
    }
    var self = this;
    stream.getTracks().forEach(function (track) {
        self._pc.addTrack(track, stream);
    });
};

/**
 * Add ice candidate.
 * @function _addIceCandidate
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {RTCIceCandidateInit} iceCandidate 
 * @returns {Promise<void>}
 */
qbRTCPeerConnection.prototype._addIceCandidate = function (iceCandidate) {
    return this._pc.addIceCandidate(iceCandidate).catch(function (error) {
        Helpers.traceError("Error on 'addIceCandidate': " + error);
    });
};

/**
 * Add ice candidates.
 * @function addCandidates
 * @memberOf QB.webrtc.RTCPeerConnection
 * @param {Array<RTCIceCandidateInit>} iceCandidates 
 */
qbRTCPeerConnection.prototype.addCandidates = function (iceCandidates) {
    var self = this;

    iceCandidates.forEach(function (candidate) {
        self.remoteIceCandidates.push(candidate);
    });

    if (this._pc.remoteDescription) {
        self.remoteIceCandidates.forEach(function (candidate) {
            self._addIceCandidate(candidate);
        });
    }
};

qbRTCPeerConnection.prototype.toString = function sessionToString() {
    return (
        'sessionID: ' + this.sessionID +
        ', userID:  ' + this.userID +
        ', state: ' + this.state
    );
};

/**
 * CALLBACKS
 */
qbRTCPeerConnection.prototype.onSignalingStateCallback = function () {
    if (this._pc.signalingState === 'stable' && this.localIceCandidates.length > 0) {
        this.delegate.processIceCandidates(this, this.localIceCandidates);
        while (this.localIceCandidates.length) {
            this.localIceCandidates.pop();
        }
    }
};

/**
 * @param {RTCPeerConnectionIceEvent} event 
 */
qbRTCPeerConnection.prototype.onIceCandidateCallback = function (event) {
    if (event.candidate) {
        var candidate = {
            candidate: event.candidate.candidate,
            sdpMid: event.candidate.sdpMid,
            sdpMLineIndex: event.candidate.sdpMLineIndex
        };
        if (this._pc.signalingState === 'stable') {
            this.delegate.processIceCandidates(this, [candidate]);
        } else {
            // collecting internally the ice candidates
            // will send a bit later
            this.localIceCandidates.push(candidate);
        }
    }
};

/**
 * Handler of remote media track event
 * @param {RTCTrackEvent} event
 */
qbRTCPeerConnection.prototype.onTrackCallback = function (event) {
    this.remoteStream = event.streams[0];
    if (typeof this.delegate._onRemoteStreamListener === 'function' &&
        ['connected', 'completed'].includes(this._pc.iceConnectionState)) {
        this.delegate._onRemoteStreamListener(this.userID, this.remoteStream);
    }
    this._getStatsWrap();
};

qbRTCPeerConnection.prototype.onIceConnectionStateCallback = function () {
    Helpers.trace("onIceConnectionStateCallback: " + this._pc.iceConnectionState);
    var connectionState = null;

    switch (this._pc.iceConnectionState) {
        case 'checking':
            this.state = qbRTCPeerConnection.State.CHECKING;
            connectionState = Helpers.SessionConnectionState.CONNECTING;
            break;

        case 'connected':
            if (this._reconnecting) {
                this.delegate._stopReconnectTimer(this.userID);
            }
            this.state = qbRTCPeerConnection.State.CONNECTED;
            connectionState = Helpers.SessionConnectionState.CONNECTED;
            break;

        case 'completed':
            if (this._reconnecting) {
                this.delegate._stopReconnectTimer(this.userID);
            }
            this.state = qbRTCPeerConnection.State.COMPLETED;
            connectionState = Helpers.SessionConnectionState.COMPLETED;
            break;

        case 'failed':
            this.delegate._startReconnectTimer(this.userID);
            this.state = qbRTCPeerConnection.State.FAILED;
            connectionState = Helpers.SessionConnectionState.FAILED;
            break;

        case 'disconnected':
            this.delegate._startReconnectTimer(this.userID);
            this.state = qbRTCPeerConnection.State.DISCONNECTED;
            connectionState = Helpers.SessionConnectionState.DISCONNECTED;
            break;

        // TODO: this state doesn't fires on Safari 11
        case 'closed':
            this.delegate._stopReconnectTimer(this.userID);
            this.state = qbRTCPeerConnection.State.CLOSED;
            connectionState = Helpers.SessionConnectionState.CLOSED;
            break;

        default:
            break;
    }

    if (typeof this.delegate
        ._onSessionConnectionStateChangedListener === 'function' &&
        connectionState) {
        this.delegate._onSessionConnectionStateChangedListener(
            this.userID,
            connectionState
        );
    }

    if (this._pc.iceConnectionState === 'connected' &&
        typeof this.delegate._onRemoteStreamListener === 'function') {
        this.delegate._onRemoteStreamListener(this.userID, this.remoteStream);
    }
};

/**
 * PRIVATE
 */
qbRTCPeerConnection.prototype._clearStatsReportTimer = function () {
    if (this.statsReportTimer) {
        clearInterval(this.statsReportTimer);
        this.statsReportTimer = null;
    }
};

qbRTCPeerConnection.prototype._getStatsWrap = function () {
    var self = this,
        statsReportInterval,
        lastResult;

    if (config.webrtc && config.webrtc.statsReportTimeInterval && !self.statsReportTimer) {
        if (isNaN(+config.webrtc.statsReportTimeInterval)) {
            Helpers.traceError('statsReportTimeInterval (' + config.webrtc.statsReportTimeInterval + ') must be integer.');
            return;
        }
        statsReportInterval = config.webrtc.statsReportTimeInterval * 1000;

        var _statsReportCallback = function () {
            _getStats(self._pc, lastResult, function (results, lastResults) {
                lastResult = lastResults;
                self.delegate._onCallStatsReport(self.userID, results, null);
            }, function errorLog(err) {
                Helpers.traceError('_getStats error. ' + err.name + ': ' + err.message);
                self.delegate._onCallStatsReport(self.userID, null, err);
            });
        };

        Helpers.trace('Stats tracker has been started.');
        self.statsReportTimer = setInterval(_statsReportCallback, statsReportInterval);
    }
};

qbRTCPeerConnection.prototype._clearDialingTimer = function () {
    if (this.dialingTimer) {
        Helpers.trace('_clearDialingTimer');

        clearInterval(this.dialingTimer);
        this.dialingTimer = null;
        this.answerTimeInterval = 0;
    }
};

qbRTCPeerConnection.prototype._startDialingTimer = function (extension) {
    var self = this;
    var dialingTimeInterval = config.webrtc.dialingTimeInterval * 1000;

    Helpers.trace('_startDialingTimer, dialingTimeInterval: ' + dialingTimeInterval);

    var _dialingCallback = function (extension, skipIncrement) {
        if (!skipIncrement) {
            self.answerTimeInterval += dialingTimeInterval;
        }

        Helpers.trace('_dialingCallback, answerTimeInterval: ' + self.answerTimeInterval);

        if (self.answerTimeInterval >= config.webrtc.answerTimeInterval * 1000) {
            self._clearDialingTimer();
            self.delegate.processOnNotAnswer(self);
        } else {
            self.delegate.processCall(self, extension);
        }
    };

    self.dialingTimer = setInterval(
        _dialingCallback,
        dialingTimeInterval,
        extension,
        false
    );

    // call for the 1st time
    _dialingCallback(extension, true);
};

/**
 * PRIVATE
 */
function _getStats(peer, lastResults, successCallback, errorCallback) {
    var statistic = {
        'local': {
            'audio': {},
            'video': {},
            'candidate': {}
        },
        'remote': {
            'audio': {},
            'video': {},
            'candidate': {}
        }
    };

    if (Helpers.getVersionFirefox()) {
        var localStream = peer.getLocalStreams().length ? peer.getLocalStreams()[0] : peer.delegate.localStream,
            localVideoSettings = localStream.getVideoTracks().length ? localStream.getVideoTracks()[0].getSettings() : null;

        statistic.local.video.frameHeight = localVideoSettings && localVideoSettings.height;
        statistic.local.video.frameWidth = localVideoSettings && localVideoSettings.width;
    }

    peer.getStats(null).then(function (results) {
        results.forEach(function (result) {
            var item;

            if (result.bytesReceived && result.type === 'inbound-rtp') {
                item = statistic.remote[result.mediaType];
                item.bitrate = _getBitratePerSecond(result, lastResults, false);
                item.bytesReceived = result.bytesReceived;
                item.packetsReceived = result.packetsReceived;
                item.timestamp = result.timestamp;
                if (result.mediaType === 'video' && result.framerateMean) {
                    item.framesPerSecond = Math.round(result.framerateMean * 10) / 10;
                }
            } else if (result.bytesSent && result.type === 'outbound-rtp') {
                item = statistic.local[result.mediaType];
                item.bitrate = _getBitratePerSecond(result, lastResults, true);
                item.bytesSent = result.bytesSent;
                item.packetsSent = result.packetsSent;
                item.timestamp = result.timestamp;
                if (result.mediaType === 'video' && result.framerateMean) {
                    item.framesPerSecond = Math.round(result.framerateMean * 10) / 10;
                }
            } else if (result.type === 'local-candidate') {
                item = statistic.local.candidate;
                if (result.candidateType === 'host' && result.mozLocalTransport === 'udp' && result.transport === 'udp') {
                    item.protocol = result.transport;
                    item.ip = result.ipAddress;
                    item.port = result.portNumber;
                } else if (!Helpers.getVersionFirefox()) {
                    item.protocol = result.protocol;
                    item.ip = result.ip;
                    item.port = result.port;
                }
            } else if (result.type === 'remote-candidate') {
                item = statistic.remote.candidate;
                item.protocol = result.protocol || result.transport;
                item.ip = result.ip || result.ipAddress;
                item.port = result.port || result.portNumber;
            } else if (result.type === 'track' && result.kind === 'video' && !Helpers.getVersionFirefox()) {
                if (result.remoteSource) {
                    item = statistic.remote.video;
                    item.frameHeight = result.frameHeight;
                    item.frameWidth = result.frameWidth;
                    item.framesPerSecond = _getFramesPerSecond(result, lastResults, false);
                } else {
                    item = statistic.local.video;
                    item.frameHeight = result.frameHeight;
                    item.frameWidth = result.frameWidth;
                    item.framesPerSecond = _getFramesPerSecond(result, lastResults, true);
                }
            }
        });
        successCallback(statistic, results);
    }, errorCallback);

    function _getBitratePerSecond(result, lastResults, isLocal) {
        var lastResult = lastResults && lastResults.get(result.id),
            seconds = lastResult ? ((result.timestamp - lastResult.timestamp) / 1000) : 5,
            kilo = 1024,
            bit = 8,
            bitrate;

        if (!lastResult) {
            bitrate = 0;
        } else if (isLocal) {
            bitrate = bit * (result.bytesSent - lastResult.bytesSent) / (kilo * seconds);
        } else {
            bitrate = bit * (result.bytesReceived - lastResult.bytesReceived) / (kilo * seconds);
        }

        return Math.round(bitrate);
    }

    function _getFramesPerSecond(result, lastResults, isLocal) {
        var lastResult = lastResults && lastResults.get(result.id),
            seconds = lastResult ? ((result.timestamp - lastResult.timestamp) / 1000) : 5,
            framesPerSecond;

        if (!lastResult) {
            framesPerSecond = 0;
        } else if (isLocal) {
            framesPerSecond = (result.framesSent - lastResult.framesSent) / seconds;
        } else {
            framesPerSecond = (result.framesReceived - lastResult.framesReceived) / seconds;
        }

        return Math.round(framesPerSecond * 10) / 10;
    }
}

// Find the line in sdpLines[startLine...endLine - 1] that starts with |prefix|
// and, if specified, contains |substr| (case-insensitive search).
function findLineInRange(
  sdpLines,
  startLine,
  endLine,
  prefix,
  substr,
  direction
) {
  if (direction === undefined) {
    direction = 'asc';
  }

  direction = direction || 'asc';

  if (direction === 'asc') {
    // Search beginning to end
    var realEndLine = endLine !== -1 ? endLine : sdpLines.length;
    for (var i = startLine; i < realEndLine; ++i) {
      if (sdpLines[i].indexOf(prefix) === 0) {
        if (!substr ||
            sdpLines[i].toLowerCase().indexOf(substr.toLowerCase()) !== -1) {
          return i;
        }
      }
    }
  } else {
    // Search end to beginning
    var realStartLine = startLine !== -1 ? startLine : sdpLines.length-1;
    for (var j = realStartLine; j >= 0; --j) {
      if (sdpLines[j].indexOf(prefix) === 0) {
        if (!substr ||
            sdpLines[j].toLowerCase().indexOf(substr.toLowerCase()) !== -1) {
          return j;
        }
      }
    }
  }
  return null;
}

/**
 * Gets the codec payload type from an a=rtpmap:X line.
 * @param {string} sdpLine
 * @returns {string|null}
 */
function getCodecPayloadTypeFromLine(sdpLine) {
  var pattern = new RegExp('a=rtpmap:(\\d+) [a-zA-Z0-9-]+\\/\\d+');
  var result = sdpLine.match(pattern);
  return (result && result.length === 2) ? result[1] : null;
}

/**
 * Returns a new m= line with the specified codec as the first one.
 * @param {string} mLine
 * @param {string} payload
 * @returns {string}
 */
function setDefaultCodec(mLine, payload) {
  var elements = mLine.split(' ');

  // Just copy the first three parameters; codec order starts on fourth.
  var newLine = elements.slice(0, 3);

  // Put target payload first and copy in the rest.
  newLine.push(payload);
  for (var i = 3; i < elements.length; i++) {
    if (elements[i] !== payload) {
      newLine.push(elements[i]);
    }
  }
  return newLine.join(' ');
}

/**
 * Mangles SDP to put preferred codec at the beginning
 * @param {string} sdp
 * @param {'audio'|'video'} type
 * @param {string} codec VP9, VP8, H264, opus etc.
 * @returns {string}
 */
function setPreferredCodec(sdp, type, codec) {
    if (!codec) {
      return sdp;
    }

    var sdpLines = sdp.split('\r\n');

    // Search for m line.
    var mLineIndex = findLineInRange(sdpLines, 0, -1, 'm=', type);
    if (mLineIndex === null) {
      return sdp;
    }
  
    // If the codec is available, set it as the default in m line.
    var payload = null;
    // Iterate through rtpmap enumerations to find all matching codec entries
    for (var i = sdpLines.length-1; i >= 0 ; --i) {
      // Finds first match in rtpmap
      var index = findLineInRange(sdpLines, i, 0, 'a=rtpmap', codec, 'desc');
      if (index !== null) {
        // Skip all of the entries between i and index match
        i = index;
        payload = getCodecPayloadTypeFromLine(sdpLines[index]);
        if (payload) {
          // Move codec to top
          sdpLines[mLineIndex] = setDefaultCodec(sdpLines[mLineIndex], payload);
        }
      } else {
        // No match means we can break the loop
        break;
      }
    }

    sdp = sdpLines.join('\r\n');
    return sdp;
}

/**
 * This is to fix error on legacy WebRTC implementations
 * @param {RTCSessionDescriptionInit} description
 */
function _removeExtmapMixedFromSDP(description) {
    if (description &&
        description.sdp &&
        description.sdp.indexOf('\na=extmap-allow-mixed') !== -1) {
        description.sdp = description.sdp
            .split('\n')
            .filter(function (line) {
                return line.trim() !== 'a=extmap-allow-mixed';
            })
            .join('\n');
    }
    return description;
}

/**
 * @param {string} sdp 
 * @param {'audio'|'video'} media 
 * @param {number} [bitrate] 
 * @returns {string}
 */
function setMediaBitrate(sdp, media, bitrate) {
    if (!bitrate) {
        return sdp
            .replace(/b=AS:.*\r\n/, '')
            .replace(/b=TIAS:.*\r\n/, '');
    }

    var lines = sdp.split('\n'),
        line = -1,
        modifier = Helpers.getVersionFirefox() ? 'TIAS' : 'AS',
        amount = Helpers.getVersionFirefox() ? bitrate * 1024 : bitrate;

    for (var i = 0; i < lines.length; i++) {
        if (lines[i].indexOf("m=" + media) === 0) {
            line = i;
            break;
        }
    }

    if (line === -1) {
        return sdp;
    }

    line++;

    while (lines[line].indexOf('i=') === 0 || lines[line].indexOf('c=') === 0) {
        line++;
    }

    if (lines[line].indexOf('b') === 0) {
        lines[line] = 'b=' + modifier + ':' + amount;
        return lines.join('\n');
    }

    var newLines = lines.slice(0, line);
    newLines.push('b=' + modifier + ':' + amount);
    newLines = newLines.concat(lines.slice(line, lines.length));

    return newLines.join('\n');
}

module.exports = qbRTCPeerConnection;

},{"../../qbConfig":252,"./qbWebRTCHelpers":246}],245:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC client)
 */

/**
 * @namespace QB.webrtc
 */

/*
 * User's callbacks (listener-functions):
 * - onCallListener(session, extension)
 * - onAcceptCallListener(session, userID, extension)
 * - onRejectCallListener(session, userID, extension)
 * - onStopCallListener(session, userID, extension)
 * - onUpdateCallListener(session, userID, extension)
 * - onInvalidEventsListener (state, session, userID, extension)
 * - onDevicesChangeListener()
 */

var WebRTCSession = require('./qbWebRTCSession');
var WebRTCSignalingProcessor = require('./qbWebRTCSignalingProcessor');
var WebRTCSignalingProvider = require('./qbWebRTCSignalingProvider');
var Helpers = require('./qbWebRTCHelpers');
var RTCPeerConnection = require('./qbRTCPeerConnection');
var SignalingConstants = require('./qbWebRTCSignalingConstants');
var Utils = require('../../qbUtils');
var config = require('../../qbConfig');

var LiveSessionStates = [
    WebRTCSession.State.NEW,
    WebRTCSession.State.CONNECTING,
    WebRTCSession.State.ACTIVE
];

function WebRTCClient(service, chat) {

    this.chat = chat;
    this.signalingProcessor = new WebRTCSignalingProcessor(service, this);
    this.signalingProvider = new WebRTCSignalingProvider(service, chat);
    chat.webrtcSignalingProcessor = this.signalingProcessor;

    this.SessionConnectionState = Helpers.SessionConnectionState;
    this.CallType = Helpers.CallType;
    this.PeerConnectionState = RTCPeerConnection.State;

    this.sessions = {};

    if (navigator.mediaDevices && 'ondevicechange' in navigator.mediaDevices) {
        navigator.mediaDevices.ondevicechange = this._onDevicesChangeListener.bind(this);
    }

}

/**
 * Return data or all active devices.
 * @function getMediaDevices
 * @memberof QB.webrtc
 * @param  {String} spec - Specify what type of devices you wnat to get.
 *                         Possible values: audioinput, audiooutput, videoinput.
 * @returns {Array} Array of devices.
 */
WebRTCClient.prototype.getMediaDevices = function(spec) {
    var specDevices = [],
        errMsg = 'Browser does not support output device selection.';

    return new Promise(function(resolve, reject) {
        if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
            reject(errMsg);
            Helpers.traceWarning(errMsg);
        } else {
            navigator.mediaDevices.enumerateDevices().then(function(devices) {
                if(spec) {
                    devices.forEach(function(device, i) {
                        if(device.kind === spec) {
                            specDevices.push(device);
                        }
                    });

                    resolve(specDevices);
                } else {
                    resolve(devices);
                }
            });
        }
    });
};

/**
 * A map with all sessions the user had/have.
 * @member {Object.<string, Object>} sessions
 * @memberof QB.webrtc
 */
WebRTCClient.prototype.sessions = {};

/**
 * Creates the new session({@link https://docs.quickblox.com/docs/js-video-calling#create-session read more}).
 * @function createNewSession
 * @memberof QB.webrtc
 * @param  {Array<number>} opponentsIDs - Opponents IDs.
 * @param  {1|2} ct - Call type.
 * @param  {number} [cID=yourUserId] - Initiator ID.
 * @param  {object} [opts]
 * @param  {number} [opts.bandwidth=0] - Bandwidth limit (kbps).
 * 
 * @returns {WebRTCSession} 
 */
WebRTCClient.prototype.createNewSession = function(opponentsIDs, ct, cID, opts) {
    var opponentsIdNASessions = getOpponentsIdNASessions(this.sessions),
        callerID = cID || Helpers.getIdFromNode(this.chat.connection.jid),
        bandwidth = opts && opts.bandwidth && (!isNaN(opts.bandwidth)) ? +opts.bandwidth : 0,
        isIdentifyOpponents = false,
        callType = ct || 2;

    if (!opponentsIDs) {
        throw new Error('Can\'t create a session without the opponentsIDs.');
    }
    if (!Array.isArray(opponentsIDs)) {
        throw new Error('"opponentsIDs" should be Array of numbers');
    }
    opponentsIDs.forEach(function (id) {
        var value = parseInt(id);
        if (isNaN(value)) {
            throw new Error('"opponentsIDs" should be Array of numbers');
        }
        id = value;
    });

    isIdentifyOpponents = isOpponentsEqual(opponentsIdNASessions, opponentsIDs);

    if (!isIdentifyOpponents) {
        return this._createAndStoreSession(null, callerID, opponentsIDs, callType, bandwidth);
    } else {
        throw new Error('Can\'t create a session with the same opponentsIDs. There is a session already in NEW or ACTIVE state.');
    }
};

WebRTCClient.prototype._createAndStoreSession = function(sessionID, callerID, opponentsIDs, callType, bandwidth) {
    var newSession = new WebRTCSession({
        sessionID: sessionID,
        initiatorID: callerID,
        opIDs: opponentsIDs,
        callType: callType,
        signalingProvider: this.signalingProvider,
        currentUserID: Helpers.getIdFromNode(this.chat.connection.jid),
        bandwidth: bandwidth
    });

    /** set callbacks */
    newSession.onUserNotAnswerListener = this.onUserNotAnswerListener;
    newSession.onReconnectListener = this.onReconnectListener;
    newSession.onRemoteStreamListener = this.onRemoteStreamListener;
    newSession.onSessionConnectionStateChangedListener = this.onSessionConnectionStateChangedListener;
    newSession.onSessionCloseListener = this.onSessionCloseListener;
    newSession.onCallStatsReport = this.onCallStatsReport;

    this.sessions[newSession.ID] = newSession;
    return newSession;
};

/**
 * Deletes a session.
 * @function clearSession
 * @memberof QB.webrtc
 * @param {string} sessionId - Session id.
 *
 */
WebRTCClient.prototype.clearSession = function(sessionId) {
    delete WebRTCClient.sessions[sessionId];
};

/**
 * Check all session and find session with status 'NEW' or 'ACTIVE' which ID != provided.
 * @param {string} sessionID - Session id.
 * @returns {boolean} True if active or new session exist.
 */
WebRTCClient.prototype.isExistLiveSessionExceptSessionID = function(sessionID) {
    var exist = false;
    var sessions = this.sessions;

    if (Object.keys(sessions).length > 0) {
        exist = Object.keys(sessions).some(function (key) {
            var session = sessions[key];
            var sessionActive = LiveSessionStates.includes(session.state);
            return sessionActive && session.ID !== sessionID;
        });
    }

    return exist;
};

WebRTCClient.prototype.getNewSessionsCount = function (exceptId) {
    var sessions = this.sessions;
    return Object.keys(sessions).reduce(function (count, sessionId) {
        var session = sessions[sessionId];
        if (session.ID === exceptId) {
            return count;
        }
        var sessionActive = (
            session.state === WebRTCSession.State.NEW
        );
        return sessionActive ? count + 1 : count;
    }, 0);
};

/**
 * DELEGATE (signaling)
 */
WebRTCClient.prototype._onCallListener = function(userID, sessionID, extension) {
    var userInfo = extension.userInfo || {};

    var currentUserID = Helpers.getIdFromNode(this.chat.connection.jid);
    if (userID === currentUserID && !extension.opponentsIDs.includes(currentUserID)) {
        Helpers.trace(
            'Ignore "onCall" signal from current user.' +
            ' userID:' + userID + ', sessionID: ' + sessionID
        );
        return;
    }
    Helpers.trace("onCall. UserID:" + userID + ". SessionID: " + sessionID);

    var otherActiveSessions = this.isExistLiveSessionExceptSessionID(sessionID);
    var newSessionsCount = this.getNewSessionsCount(sessionID);
    if (otherActiveSessions && !this.sessions[sessionID]) {
        newSessionsCount++;
    }

    var reject = (
        otherActiveSessions &&
        (config.webrtc.autoReject || newSessionsCount > config.webrtc.incomingLimit)
    );

    if (reject) {
        Helpers.trace('User with id ' + userID + ' is busy at the moment.');

        delete extension.sessionDescription;
        delete extension.platform;
        extension.sessionID = sessionID;

        this.signalingProvider.sendMessage(userID, extension, SignalingConstants.SignalingType.REJECT);

        if (typeof this.onInvalidEventsListener  === 'function'){
            Utils.safeCallbackCall(this.onInvalidEventsListener, 'onCall', sessionID, userID, userInfo);
        }
    } else {
        var session = this.sessions[sessionID],
            bandwidth = +userInfo.bandwidth || 0;

        if (!session) {
            session = this._createAndStoreSession(
                sessionID,
                extension.callerID,
                extension.opponentsIDs,
                extension.callType,
                bandwidth
            );
            if (typeof this.onCallListener === 'function') {
                Utils.safeCallbackCall(this.onCallListener, session, userInfo);
            }
        }

        session.processOnCall(userID, extension);
    }
};

WebRTCClient.prototype._onAcceptListener = function(userID, sessionID, extension) {
    var session = this.sessions[sessionID],
        userInfo = extension.userInfo || {};

    Helpers.trace("onAccept. UserID:" + userID + ". SessionID: " + sessionID);

    if (session) {
        if (session.state === WebRTCSession.State.CONNECTING ||
            session.state === WebRTCSession.State.ACTIVE) {
            if (typeof this.onAcceptCallListener === 'function') {
                Utils.safeCallbackCall(this.onAcceptCallListener, session, userID, userInfo);
            }

            session.processOnAccept(userID, extension);
        } else {
            if (typeof this.onInvalidEventsListener === 'function'){
                Utils.safeCallbackCall(this.onInvalidEventsListener, 'onAccept', session, userID, userInfo);
            }

            Helpers.traceWarning("Ignore 'onAccept', the session( " + sessionID + " ) has invalid state.");
        }
    } else {
        Helpers.traceError("Ignore 'onAccept', there is no information about session " + sessionID + " by some reason.");
    }
};

WebRTCClient.prototype._onRejectListener = function(userID, sessionID, extension) {
    var that = this,
        session = that.sessions[sessionID];

    Helpers.trace("onReject. UserID:" + userID + ". SessionID: " + sessionID);

    if (session) {
        var userInfo = extension.userInfo || {};

        if (typeof this.onRejectCallListener === 'function') {
            Utils.safeCallbackCall(that.onRejectCallListener, session, userID, userInfo);
        }

        session.processOnReject(userID, extension);
    } else {
        Helpers.traceError("Ignore 'onReject', there is no information about session " + sessionID + " by some reason.");
    }
};

WebRTCClient.prototype._onStopListener = function(userID, sessionID, extension) {
    Helpers.trace("onStop. UserID:" + userID + ". SessionID: " + sessionID);

    var session = this.sessions[sessionID],
        userInfo = extension.userInfo || {};

    if (session && LiveSessionStates.includes(session.state)) {
        if (typeof this.onStopCallListener === 'function') {
            Utils.safeCallbackCall(this.onStopCallListener, session, userID, userInfo);
        }

        // Need to make this asynchronously, to keep the strophe handler alive
        setTimeout(session.processOnStop.bind(session), 10, userID, extension);
    } else {
        if (typeof this.onInvalidEventsListener === 'function'){
            Utils.safeCallbackCall(this.onInvalidEventsListener, 'onStop', session, userID, userInfo);
        }

        Helpers.traceError("Ignore 'onStop', there is no information about session " + sessionID + " by some reason.");
    }
};

WebRTCClient.prototype._onIceCandidatesListener = function(userID, sessionID, extension) {
    var session = this.sessions[sessionID];

    Helpers.trace("onIceCandidates. UserID:" + userID + ". SessionID: " + sessionID + ". ICE candidates count: " + extension.iceCandidates.length);

    if (session) {
        if (session.state === WebRTCSession.State.CONNECTING ||
            session.state === WebRTCSession.State.ACTIVE) {
            session.processOnIceCandidates(userID, extension);
        } else {
            Helpers.traceWarning('Ignore \'OnIceCandidates\', the session ( ' + sessionID + ' ) has invalid state.');
        }
    } else {
        Helpers.traceError("Ignore 'OnIceCandidates', there is no information about session " + sessionID + " by some reason.");
    }
};

WebRTCClient.prototype._onUpdateListener = function(userID, sessionID, extension) {
    var session = this.sessions[sessionID],
        userInfo = extension.userInfo || {};

    Helpers.trace("onUpdate. UserID:" + userID + ". SessionID: " + sessionID + ". Extension: " + JSON.stringify(userInfo));

    if (session) {
        if (extension.reason) {
            session.processOnUpdate(userID, extension);
        }
        if (typeof this.onUpdateCallListener === 'function') {
            Utils.safeCallbackCall(this.onUpdateCallListener, session, userID, userInfo);
        }
    }
};

WebRTCClient.prototype._onDevicesChangeListener = function() {
    if (typeof this.onDevicesChangeListener === 'function') {
        Utils.safeCallbackCall(this.onDevicesChangeListener);
    }
};

module.exports = WebRTCClient;

/**
 * PRIVATE FUNCTIONS
 */
function isOpponentsEqual(exOpponents, currentOpponents) {
    var ans = false,
        cOpponents = currentOpponents.sort();

    if (exOpponents.length) {
        exOpponents.forEach(function(i) {
            var array = i.sort();

            ans = (array.length == cOpponents.length) && array.every(function(el, index) {
                return el === cOpponents[index];
            });
        });
    }

    return ans;
}

function getOpponentsIdNASessions(sessions) {
    var opponents = [];

    if (Object.keys(sessions).length > 0) {
        Object.keys(sessions).forEach(function(key, i, arr) {
            var session = sessions[key];
            if (session.state === WebRTCSession.State.NEW || session.state === WebRTCSession.State.ACTIVE) {
                opponents.push(session.opponentsIDs);
            }
        });
    }

    return opponents;
}

},{"../../qbConfig":252,"../../qbUtils":256,"./qbRTCPeerConnection":244,"./qbWebRTCHelpers":246,"./qbWebRTCSession":247,"./qbWebRTCSignalingConstants":248,"./qbWebRTCSignalingProcessor":249,"./qbWebRTCSignalingProvider":250}],246:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC helpers)
 */

var config = require('../../qbConfig');

var WebRTCHelpers = {
    getUserJid: function(id, appId) {
        return id + '-' + appId + '@' + config.endpoints.chat;
    },

    getIdFromNode: function(jid) {
        if (jid.indexOf('@') < 0) return null;
        return parseInt(jid.split('@')[0].split('-')[0]);
    },

    trace: function(text) {
        if (config.debug) {
            console.log('[QBWebRTC]:', text);
        }
    },

    traceWarning: function(text) {
        if (config.debug) {
            console.warn('[QBWebRTC]:', text);
        }
    },

    traceError: function(text) {
        if (config.debug) {
            console.error('[QBWebRTC]:', text);
        }
    },

    getLocalTime: function() {
        var arr = new Date().toString().split(' ');
        return arr.slice(1,5).join('-');
    },

    isIOS: function() {
        if (!window || !window.navigator || !window.navigator.userAgent) {
            return false;
        }
        var ua = window.navigator.userAgent;
        return Boolean(ua.match(/iP(ad|hone)/i));
    },

    isIOSSafari: function() {
        if (!window || !window.navigator || !window.navigator.userAgent) {
            return false;
        }
        var ua = window.navigator.userAgent;
        var iOS = Boolean(ua.match(/iP(ad|hone)/i));
        var isWebkit = Boolean(ua.match(/WebKit/i));
        var isChrome = Boolean(ua.match(/CriOS/i));
        return iOS && isWebkit && !isChrome;
    },

    isIOSChrome: function() {
        if (!window || !window.navigator || !window.navigator.userAgent) {
            return false;
        }
        var ua = window.navigator.userAgent;
        var iOS = Boolean(ua.match(/iP(ad|hone)/i));
        var isWebkit = Boolean(ua.match(/WebKit/i));
        var isChrome = Boolean(ua.match(/CriOS/i));
        return iOS && !isWebkit && isChrome;
    },

    getVersionFirefox: function() {
        var ua = navigator ? navigator.userAgent : false;
        var version;

        if (ua) {
            var ffInfo = ua.match(/(?:firefox)[ \/](\d+)/i) || [];
            version = ffInfo[1] ? + ffInfo[1] : null;
        }

        return version;
    },

    getVersionSafari: function() {
        var ua = navigator ? navigator.userAgent : false;
        var version;

        if (ua) {
            var sInfo = ua.match(/(?:safari)[ \/](\d+)/i) || [];

            if (sInfo.length) {
                var sVer = ua.match(/(?:version)[ \/](\d+)/i) || [];

                if (sVer) {
                    version = sVer[1] ? + sVer[1] : null;
                } else {
                    version = null;
                }
            } else {
                version = null;
            }
        }

        return version;
    },

    /**
     * Return a Promise that  resolves after `timeout` milliseconds.
     * @param {number} [timeout=0]
     * @returns {Promise<void>}
     */
    delay: function(timeout) {
        timeout = typeof timeout === 'number' && timeout > 0 ? timeout : 0;
        return new Promise(function (resolve) {
            setTimeout(resolve, timeout);
        });
    },

    /**
     * [SessionConnectionState]
     * @enum {number}
     */
    SessionConnectionState: {
        UNDEFINED: 0,
        CONNECTING: 1,
        CONNECTED: 2,
        FAILED: 3,
        DISCONNECTED: 4,
        CLOSED: 5,
        COMPLETED: 6
    },

    /**
     * [CallType]
     * @enum {number}
     */
    CallType: {
        VIDEO: 1,
        AUDIO: 2
    },
};

module.exports = WebRTCHelpers;

},{"../../qbConfig":252}],247:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC session model)
 */

/**
 * User's callbacks (listener-functions):
 * - onUserNotAnswerListener(session, userID)
 * - onRemoteStreamListener(session, userID, stream)
 * - onSessionConnectionStateChangedListener(session, userID, connectionState)
 * - onSessionCloseListener(session)
 * - onCallStatsReport(session, userId, stats, error)
 * - onReconnectListener(session, userId, state)
 */

/**
 * @namespace QB.webrtc.WebRTCSession
 */

/**
 * @typedef {Object} MediaParams
 * @property {boolean | MediaTrackConstraints} [params.audio]
 * @property {boolean | MediaTrackConstraints} [params.video]
 * @property {string} [params.elemId] - Id of HTMLVideoElement.
 * @property {Object} [params.options]
 * @property {boolean} [params.options.muted]
 * @property {boolean} [params.options.mirror]
 */

var config = require('../../qbConfig');
var qbRTCPeerConnection = require('./qbRTCPeerConnection');
var Utils = require('../../qbUtils');
var Helpers = require('./qbWebRTCHelpers');
var SignalingConstants = require('./qbWebRTCSignalingConstants');

var ICE_TIMEOUT = 5000; // 5 seconds

/**
 * State of a session
 */
WebRTCSession.State = {
    NEW: 1,
    ACTIVE: 2,
    HUNGUP: 3,
    REJECTED: 4,
    CLOSED: 5
};

var ReconnectionState = {
    RECONNECTING: 'reconnecting',
    RECONNECTED: 'reconnected',
    FAILED: 'failed'
};


/**
 * QuickBlox WebRTC session.
 * @param {Object} params
 * @param {1|2} params.callType - Type of a call 
 * 1 - VIDEO  
 * 2 - AUDIO  
 * @param {Array<number>} params.opIDs - An array with opponents.
 * @param {number} params.currentUserID - Current user ID.
 * @param {number} params.initiatorID - Call initiator ID.
 * @param {string} [params.sessionID] - Session identifier (optional).
 * @param {number} [params.bandwidth] - Bandwidth limit.
 */
function WebRTCSession(params) {
    this.ID = params.sessionID ? params.sessionID : generateUUID();
    this.state = WebRTCSession.State.NEW;

    this.initiatorID = parseInt(params.initiatorID);
    this.opponentsIDs = params.opIDs;
    this.callType = parseInt(params.callType);
    /*** @type {{[userId: number]: qbRTCPeerConnection}} */
    this.peerConnections = {};
    /*** @type {MediaParams} */
    this.mediaParams = null;
    /*** @type {{[userID: number]: number | undefined}} */
    this.iceConnectTimers = {};
    /*** @type {{[userID: number]: number | undefined}} */
    this.reconnectTimers = {};

    this.signalingProvider = params.signalingProvider;

    this.currentUserID = params.currentUserID;

    this.bandwidth = params.bandwidth;

    /***
     * We use this timeout to fix next issue:
     * "From Android/iOS make a call to Web and kill the Android/iOS app instantly. Web accept/reject popup will be still visible.
     * We need a way to hide it if sach situation happened."
     */
    this.answerTimer = null;

    this.startCallTime = 0;
    this.acceptCallTime = 0;
    /*** @type {MediaStream | undefined} */
    this.localStream = undefined;
}

/**
 * Get the user media stream({@link https://docs.quickblox.com/docs/js-video-calling#access-local-media-stream read more}).
 * @function getUserMedia
 * @memberof QB.webrtc.WebRTCSession
 * @param {MediaParams} params - Media stream constraints and additional options.
 * @param {Function} callback - Callback to get a result of the function.
 */
WebRTCSession.prototype.getUserMedia = function (params, callback) {
    if (!navigator.mediaDevices.getUserMedia) {
        throw new Error('getUserMedia() is not supported in your browser');
    }

    var self = this;
    var mediaConstraints = {
        audio: params.audio || false,
        video: params.video || false
    };

    function successCallback(stream) {
        self.localStream = stream;
        self.mediaParams = Object.assign({}, params);

        if (params.elemId) {
            self.attachMediaStream(params.elemId, stream, params.options);
        }

        if (callback && typeof callback === 'function') {
            callback(undefined, stream);
        }
    }

    navigator
        .mediaDevices
        .getUserMedia(mediaConstraints)
        .then(successCallback)
        .catch(callback);
};

/**
 * Get the state of connection.
 * @function connectionStateForUser
 * @memberof QB.webrtc.WebRTCSession
 * @param {number} userID
 */
WebRTCSession.prototype.connectionStateForUser = function (userID) {
    var peerConnection = this.peerConnections[userID];
    return peerConnection ? peerConnection.state : undefined;
};

/**
 * Attach media stream to audio/video element({@link https://docs.quickblox.com/docs/js-video-calling#attach-local-media-stream read more}).
 * @function attachMediaStream
 * @memberof QB.webrtc.WebRTCSession
 * @param {string} elementId - The Id of an ellement to attach a stream.
 * @param {MediaStream} stream - The stream to attach.
 * @param {Object} [options] - The additional options.
 * @param {boolean} [options.muted] - Whether video element should be muted.
 * @param {boolean} [options.mirror] - Whether video should be "mirrored".
 */
WebRTCSession.prototype.attachMediaStream = function (elementId, stream, options) {
    var elem = document.getElementById(elementId);

    if (elem) {
        if (elem instanceof HTMLMediaElement) {
            if ('srcObject' in elem) {
                elem.srcObject = stream;
            } else {
                elem.src = window.URL.createObjectURL(stream);
            }

            if (options && options.muted) {
                elem.muted = true;
            }

            if (options && options.mirror) {
                elem.style.transform = 'scaleX(-1)';
            }

            if (!elem.autoplay) {
                elem.onloadedmetadata = function () {
                    elem.play();
                };
            }
        } else {
            throw new Error('Cannot attach media stream to element with id "' + elementId + '" because it is not of type HTMLMediaElement');
        }
    } else {
        throw new Error('Unable to attach media stream, cannot find element by Id "' + elementId + '"');
    }
};

/**
 * Detach media stream from audio/video element.
 * @function detachMediaStream
 * @memberof QB.webrtc.WebRTCSession
 * @param {string} elementId - The Id of an element to detach a stream.
 */
WebRTCSession.prototype.detachMediaStream = function (elementId) {
    var elem = document.getElementById(elementId);

    if (elem && elem instanceof HTMLMediaElement) {
        elem.pause();

        if (elem.srcObject && typeof elem.srcObject === 'object') {
            elem.srcObject.getTracks().forEach(function (track) {
                track.stop();
                track.enabled = false;
            });
            elem.srcObject = null;
        } else {
            elem.src = '';
        }

        elem.removeAttribute("src");
        elem.removeAttribute("srcObject");
    }
};

/**
 * Switch media tracks in audio/video HTML's element and replace its in peers({@link https://docs.quickblox.com/docs/js-video-calling-advanced#switch-camera read more}).
 * @function switchMediaTracks
 * @memberof QB.webrtc.WebRTCSession
 * @param {Object} deviceIds - An object with deviceIds of plugged devices.
 * @param {string} [deviceIds.audio] - The deviceId, it can be gotten from QB.webrtc.getMediaDevices('audioinput').
 * @param {string} [deviceIds.video] - The deviceId, it can be gotten from QB.webrtc.getMediaDevices('videoinput').
 * @param {Function} callback - The callback to get a result of the function.
 */
WebRTCSession.prototype.switchMediaTracks = function (deviceIds, callback) {
    if (!navigator.mediaDevices.getUserMedia) {
        throw new Error('getUserMedia() is not supported in your browser');
    }

    var self = this;

    if (deviceIds && deviceIds.audio) {
        this.mediaParams.audio.deviceId = deviceIds.audio;
    }

    if (deviceIds && deviceIds.video) {
        this.mediaParams.video.deviceId = deviceIds.video;
    }

    this.localStream.getTracks().forEach(function (track) {
        track.stop();
    });

    navigator.mediaDevices.getUserMedia({
        audio: self.mediaParams.audio || false,
        video: self.mediaParams.video || false
    }).then(function (stream) {
        self._replaceTracks(stream);
        callback(null, stream);
    }).catch(function (error) {
        callback(error, null);
    });
};

WebRTCSession.prototype._replaceTracks = function (stream) {
    var localStream = this.localStream;
    var elemId = this.mediaParams.elemId;
    var ops = this.mediaParams.options;
    var currentStreamTracks = localStream.getTracks();
    var newStreamTracks = stream.getTracks();

    this.detachMediaStream(elemId);

    newStreamTracks.forEach(function (newTrack) {
        const currentTrack = currentStreamTracks.find(function (track) {
            return track.kind === newTrack.kind;
        });
        if (currentTrack) {
            currentTrack.stop();
            localStream.removeTrack(currentTrack);
            localStream.addTrack(newTrack);
        }
    });

    if (elemId) {
        this.attachMediaStream(elemId, stream, ops);
    }

    /*** @param {RTCPeerConnection} peer */
    function _replaceTracksForPeer(peer) {
        return Promise.all(peer.getSenders().map(function (sender) {
            return sender.replaceTrack(newStreamTracks.find(function (track) {
                return track.kind === sender.track.kind;
            }));
        }));
    }

    return Promise.all(Object
        .values(this.peerConnections)
        .map(function (peerConnection) { return peerConnection._pc; })
        .map(_replaceTracksForPeer)
    );
};

/**
 * Initiate a call({@link https://docs.quickblox.com/docs/js-video-calling#make-a-call read more}).
 * @function call
 * @memberof QB.webrtc.WebRTCSession
 * @param {Object} [extension] - A map with a custom parametrs .
 * @param {Function} [callback]
 */
WebRTCSession.prototype.call = function (extension, callback) {
    var self = this,
        ext = _prepareExtension(extension);

    Helpers.trace('Call, extension: ' + JSON.stringify(ext.userInfo));

    self.state = WebRTCSession.State.ACTIVE;

    // First this check if we connected to the signalling channel
    // to make sure that opponents will receive `call` signal
    self._reconnectToChat(function () {
        if (self.state === WebRTCSession.State.ACTIVE) {
            // create a peer connection for each opponent
            self.opponentsIDs.forEach(function (userID) {
                self._callInternal(userID, ext);
            });
        }
    });

    if (typeof callback === 'function') {
        callback(null);
    }
};

WebRTCSession.prototype._callInternal = function (userID, extension) {
    var self = this;
    var peer = this._createPeer(userID, this.currentUserID < userID);
    this.peerConnections[userID] = peer;
    peer.addLocalStream(self.localStream);
    peer.setLocalSessionDescription({ type: 'offer' }, function (error) {
        if (error) {
            Helpers.trace("setLocalSessionDescription error: " + error);
        } else {
            Helpers.trace("setLocalSessionDescription success");
            /** let's send call requests to user */
            peer._startDialingTimer(extension);
        }
    });
};

/**
 * Accept a call({@link https://docs.quickblox.com/docs/js-video-calling#accept-a-call read more}).
 * @function accept
 * @memberof QB.webrtc.WebRTCSession
 * @param {Object} extension - A map with custom parameters.
 */
WebRTCSession.prototype.accept = function (extension) {
    var self = this,
        ext = _prepareExtension(extension);

    Helpers.trace('Accept, extension: ' + JSON.stringify(ext.userInfo));

    if (self.state === WebRTCSession.State.ACTIVE) {
        Helpers.traceError("Can't accept, the session is already active, return.");
        return;
    }

    if (self.state === WebRTCSession.State.CLOSED) {
        Helpers.traceError("Can't accept, the session is already closed, return.");
        self.stop({});
        return;
    }

    self.state = WebRTCSession.State.ACTIVE;

    self.acceptCallTime = new Date();

    self._clearAnswerTimer();

    self._acceptInternal(self.initiatorID, ext);

    /** The group call logic starts here */
    var oppIDs = self._uniqueOpponentsIDsWithoutInitiator();

    /** in a case of group video chat */
    if (oppIDs.length > 0) {
        var offerTime = (self.acceptCallTime - self.startCallTime) / 1000;
        self._startWaitingOfferOrAnswerTimer(offerTime);

        /**
         * here we have to decide to which users the user should call.
         * We have a rule: If a userID1 > userID2 then a userID1 should call to userID2.
         */
        oppIDs.forEach(function (opID, i, arr) {
            if (self.currentUserID > opID) {
                /** call to the user */
                self._callInternal(opID, {}, true);
            }
        });
    }
};

WebRTCSession.prototype._acceptInternal = function (userID, extension) {
    var self = this;

    /** create a peer connection */
    var peerConnection = this.peerConnections[userID];

    if (peerConnection) {
        var remoteSDP = peerConnection.getRemoteSDP();
        peerConnection.addLocalStream(self.localStream);
        peerConnection.setRemoteSessionDescription(remoteSDP, function (error) {
            if (error) {
                Helpers.traceError("'setRemoteSessionDescription' error: " + error);
            } else {
                Helpers.trace("'setRemoteSessionDescription' success");
                peerConnection.setLocalSessionDescription({ type: 'answer' }, function (err) {
                    if (err) {
                        Helpers.trace("setLocalSessionDescription error: " + err);
                    } else {
                        Helpers.trace("'setLocalSessionDescription' success");
                        extension.sessionID = self.ID;
                        extension.callType = self.callType;
                        extension.callerID = self.initiatorID;
                        extension.opponentsIDs = self.opponentsIDs;
                        if (peerConnection._pc.localDescription) {
                            extension.sdp = peerConnection
                                ._pc
                                .localDescription
                                .toJSON()
                                .sdp;
                        }

                        self.signalingProvider.sendMessage(
                            userID,
                            extension,
                            SignalingConstants.SignalingType.ACCEPT
                        );
                    }
                });
            }
        });
    } else {
        Helpers.traceError(
            "Can't accept the call, peer connection for userID " +
            userID + " was not found"
        );
    }
};

/**
 * Reject a call({@link https://docs.quickblox.com/docs/js-video-calling#reject-a-call read more}).
 * @function reject
 * @memberof QB.webrtc.WebRTCSession
 * @param {Object} extension - A map with custom parameters.
 */
WebRTCSession.prototype.reject = function (extension) {
    var self = this,
        ext = _prepareExtension(extension);

    Helpers.trace('Reject, extension: ' + JSON.stringify(ext.userInfo));

    self.state = WebRTCSession.State.REJECTED;

    self._clearAnswerTimer();

    ext.sessionID = self.ID;
    ext.callType = self.callType;
    ext.callerID = self.initiatorID;
    ext.opponentsIDs = self.opponentsIDs;

    Object.keys(self.peerConnections).forEach(function (key) {
        var peerConnection = self.peerConnections[key];
        self.signalingProvider.sendMessage(
            peerConnection.userID,
            ext,
            SignalingConstants.SignalingType.REJECT
        );
    });

    self._close();
};

/**
 * Stop a call({@link https://docs.quickblox.com/docs/js-video-calling#end-a-call read more}).
 * @function stop
 * @memberof QB.webrtc.WebRTCSession
 * @param {Object} extension - A map with custom parameters.
 */
WebRTCSession.prototype.stop = function (extension) {
    var self = this,
        ext = _prepareExtension(extension);

    Helpers.trace('Stop, extension: ' + JSON.stringify(ext.userInfo));

    self.state = WebRTCSession.State.HUNGUP;

    if (self.answerTimer) {
        self._clearAnswerTimer();
    }

    ext.sessionID = self.ID;
    ext.callType = self.callType;
    ext.callerID = self.initiatorID;
    ext.opponentsIDs = self.opponentsIDs;

    Object.keys(self.peerConnections).forEach(function (key) {
        var peerConnection = self.peerConnections[key];
        self.signalingProvider.sendMessage(
            peerConnection.userID,
            ext,
            SignalingConstants.SignalingType.STOP
        );
    });

    self._close();
};

/**
 * Close connection with a user.
 * @function closeConnection
 * @memberof QB.webrtc.WebRTCSession
 * @param  {Number} userId - Id of a user.
 */
WebRTCSession.prototype.closeConnection = function (userId) {
    var self = this,
        peer = this.peerConnections[userId];

    if (!peer) {
        Helpers.traceWarn('Not found connection with user (' + userId + ')');
        return false;
    }

    try {
        peer.release();
    } catch (e) {
        Helpers.traceError(e);
    } finally {
        self._closeSessionIfAllConnectionsClosed();
    }
};


/**
 * Update a call.
 * @function update
 * @memberof QB.webrtc.WebRTCSession
 * @param {Object} extension - A map with custom parameters.
 * @param {number} [userID]
 */
WebRTCSession.prototype.update = function (extension, userID) {
    var self = this,
        ext = typeof extension === 'object' ? extension : {};

    Helpers.trace('Update, extension: ' + JSON.stringify(extension));

    if (extension === null) {
        Helpers.trace("extension is null, no parameters to update");
        return;
    }

    ext.sessionID = this.ID;
    ext.callType = this.callType;
    ext.callerID = this.initiatorID;
    ext.opponentsIDs = this.opponentsIDs;

    if (userID) {
        self.signalingProvider.sendMessage(
            userID,
            ext,
            SignalingConstants.SignalingType.PARAMETERS_CHANGED
        );
    } else {
        for (var key in self.peerConnections) {
            var peer = self.peerConnections[key];
            self.signalingProvider.sendMessage(
                peer.userID,
                ext,
                SignalingConstants.SignalingType.PARAMETERS_CHANGED
            );
        }
    }
};

/**
 * Mutes the stream({@link https://docs.quickblox.com/docs/js-video-calling-advanced#mute-audio read more}).
 * @function mute
 * @memberof QB.webrtc.WebRTCSession
 * @param {string} type - 'audio' or 'video'
 */
WebRTCSession.prototype.mute = function (type) {
    this._muteStream(0, type);
};

/**
 * Unmutes the stream({@link https://docs.quickblox.com/docs/js-video-calling-advanced#mute-audio read more}).
 * @function unmute
 * @memberof QB.webrtc.WebRTCSession
 * @param {string} type - 'audio' or 'video'
 */
WebRTCSession.prototype.unmute = function (type) {
    this._muteStream(1, type);
};

/**
 * DELEGATES (rtc client)
 */
WebRTCSession.prototype.processOnCall = function (callerID, extension) {
    var self = this,
        opponentsIds = self._uniqueOpponentsIDs();

    opponentsIds.forEach(function (opponentID) {
        var peer = self.peerConnections[opponentID];

        if (!peer) {
            /** create peer connections for each opponent */
            peer = self._createPeer(
                opponentID,
                self.currentUserID < opponentID
            );
            self.peerConnections[opponentID] = peer;
            if (opponentID == callerID) {
                self._startAnswerTimer();
            }
        }
        if (opponentID == callerID) {
            peer.setRemoteSDP(new window.RTCSessionDescription({
                sdp: extension.sdp,
                type: 'offer'
            }));

            /** The group call logic starts here */
            if (callerID != self.initiatorID &&
                self.state === WebRTCSession.State.ACTIVE) {
                self._acceptInternal(callerID, {});
            }
        }
    });
};

WebRTCSession.prototype.processOnAccept = function (userID, extension) {
    var self = this;
    var peerConnection = this.peerConnections[userID];

    if (peerConnection) {
        peerConnection._clearDialingTimer();
        if (peerConnection._pc.signalingState !== 'stable') {
            var remoteSessionDescription = new window.RTCSessionDescription({
                sdp: extension.sdp,
                type: 'answer'
            });
            peerConnection.setRemoteSDP(remoteSessionDescription);
            peerConnection.setRemoteSessionDescription(remoteSessionDescription, function (error) {
                if (error) {
                    Helpers.traceError("'setRemoteSessionDescription' error: " + error);
                } else {
                    Helpers.trace("'setRemoteSessionDescription' success");
                    if (self.state !== WebRTCSession.State.ACTIVE) {
                        self.state = WebRTCSession.State.ACTIVE;
                    }
                }
            });
        } else {
            Helpers.traceError("Ignore 'onAccept', PeerConnection is already in 'stable' state");
        }
    } else {
        Helpers.traceError(
            "Ignore 'OnAccept': peer connection for user with Id " +
            userID + " was not found"
        );
    }
};

WebRTCSession.prototype.processOnReject = function (userID, extension) {
    var peerConnection = this.peerConnections[userID];

    this._clearWaitingOfferOrAnswerTimer();

    if (peerConnection) {
        peerConnection.release();
    } else {
        Helpers.traceError("Ignore 'OnReject', there is no information about peer connection by some reason.");
    }

    this._closeSessionIfAllConnectionsClosed();
};

WebRTCSession.prototype.processOnStop = function (userID, extension) {
    var self = this;

    this._clearAnswerTimer();

    var peerConnection = self.peerConnections[userID];
    if (peerConnection) {
        peerConnection.release();
        if (peerConnection._reconnecting) {
            peerConnection._reconnecting = false;
        }
        this._stopReconnectTimer(userID);
    } else {
        Helpers.traceError("Ignore 'OnStop', there is no information about peer connection by some reason.");
    }

    this._closeSessionIfAllConnectionsClosed();
};

WebRTCSession.prototype.processOnIceCandidates = function (userID, extension) {
    var peerConnection = this.peerConnections[userID];

    if (peerConnection) {
        peerConnection.addCandidates(extension.iceCandidates);
    } else {
        Helpers.traceError("Ignore 'OnIceCandidates', there is no information about peer connection by some reason.");
    }
};

WebRTCSession.prototype.processOnUpdate = function (userID, extension) {
    var SRD = extension.sessionDescription;
    var reason = extension.reason;
    var sessionIsActive = this.state === WebRTCSession.State.ACTIVE;
    if (sessionIsActive && reason && reason === 'reconnect') {
        var peer = this.peerConnections[userID];
        if (peer) {
            if (SRD) {
                if (SRD.type === 'offer') {
                    this._processReconnectOffer(userID, SRD);
                } else {
                    this._processReconnectAnswer(userID, SRD);
                }
            }
        } else {
            Helpers.traceError(
                "Ignore 'OnUpdate': peer connection for user with Id " +
                userID + " was not found"
            );
        }
    }
};

/**
 * @param {number} userID 
 * @param {RTCSessionDescriptionInit} SRD 
 */
WebRTCSession.prototype._processReconnectOffer = function (userID, SRD) {
    var self = this;
    if (this.peerConnections[userID].polite) {
        this._reconnect(this.peerConnections[userID]);
        var peer = this.peerConnections[userID];
        var offerId = SRD.offerId;
        var remoteDescription = new window.RTCSessionDescription({
            sdp: SRD.sdp,
            type: SRD.type
        });

        peer.setRemoteSDP(remoteDescription);
        peer.setRemoteSessionDescription(remoteDescription, function (e) {
            if (e) {
                Helpers.traceError('"setRemoteSessionDescription" error:' + e.message);
            } else {
                peer.setLocalSessionDescription({ type: 'answer' }, function () {
                    var description = peer._pc.localDescription.toJSON();
                    var ext = {
                        reason: 'reconnect',
                        sessionDescription: {
                            offerId: offerId,
                            sdp: description.sdp,
                            type: description.type
                        }
                    };
                    self.update(ext, userID);
                });
            }
        });
    } else {
        this._reconnect(this.peerConnections[userID], true);
    }
};

/**
 * @param {number} userID
 * @param {RTCSessionDescriptionInit} SRD
 */
WebRTCSession.prototype._processReconnectAnswer = function (userID, SRD) {
    var peer = this.peerConnections[userID];
    var offerId = SRD.offerId;
    if (peer && peer.offerId && offerId && peer.offerId === offerId) {
        var remoteDescription = new window.RTCSessionDescription({
            sdp: SRD.sdp,
            type: SRD.type
        });
        peer.setRemoteSDP(remoteDescription);
        peer.setRemoteSessionDescription(remoteDescription, function (e) {
            if (e) {
                Helpers.traceError('"setRemoteSessionDescription" error:' + e.message);
            }
        });
    }
};

/**
 * Send "call" signal to the opponent
 * @param {qbRTCPeerConnection} peerConnection
 * @param {Object} ext
 */
WebRTCSession.prototype.processCall = function (peerConnection, ext) {
    var extension = ext || {};
    if (!peerConnection._pc.localDescription) return;
    extension.sessionID = this.ID;
    extension.callType = this.callType;
    extension.callerID = this.initiatorID;
    extension.opponentsIDs = this.opponentsIDs;
    extension.sdp = peerConnection._pc.localDescription.sdp;

    //TODO: set bandwidth to the userInfo object
    extension.userInfo = ext && ext.userInfo ? ext.userInfo : {};
    extension.userInfo.bandwidth = this.bandwidth;

    this.signalingProvider.sendMessage(
        peerConnection.userID,
        extension,
        SignalingConstants.SignalingType.CALL
    );
};

WebRTCSession.prototype.processIceCandidates = function (peerConnection, iceCandidates) {
    var extension = {};

    extension.sessionID = this.ID;
    extension.callType = this.callType;
    extension.callerID = this.initiatorID;
    extension.opponentsIDs = this.opponentsIDs;

    this.signalingProvider.sendCandidate(peerConnection.userID, iceCandidates, extension);
};

WebRTCSession.prototype.processOnNotAnswer = function (peerConnection) {
    Helpers.trace("Answer timeout callback for session " + this.ID + " for user " + peerConnection.userID);

    this._clearWaitingOfferOrAnswerTimer();

    peerConnection.release();

    if (typeof this.onUserNotAnswerListener === 'function') {
        Utils.safeCallbackCall(this.onUserNotAnswerListener, this, peerConnection.userID);
    }

    this._closeSessionIfAllConnectionsClosed();
};

/**
 * DELEGATES (peer connection)
 */
WebRTCSession.prototype._onRemoteStreamListener = function (userID, stream) {
    if (typeof this.onRemoteStreamListener === 'function') {
        Utils.safeCallbackCall(this.onRemoteStreamListener, this, userID, stream);
    }
};

/**
 * [_onCallStatsReport return statistics about the peer]
 * @param  {number} userId [id of user (callee)]
 * @param  {array} stats  [array of statistics]
 *
 * Fire onCallStatsReport callbacks with parameters(userId, stats, error).
 * If stats will be invalid callback return null and error
 */
WebRTCSession.prototype._onCallStatsReport = function (userId, stats, error) {
    if (typeof this.onCallStatsReport === 'function') {
        Utils.safeCallbackCall(this.onCallStatsReport, this, userId, stats, error);
    }
};

WebRTCSession.prototype._onSessionConnectionStateChangedListener = function (userID, connectionState) {
    var StateClosed = Helpers.SessionConnectionState.CLOSED;
    var peer = this.peerConnections[userID];
    if (typeof this.onSessionConnectionStateChangedListener === 'function') {
        Utils.safeCallbackCall(
            this.onSessionConnectionStateChangedListener,
            this,
            userID,
            connectionState
        );
    }
    if (connectionState === StateClosed && peer) {
        peer._pc.onicecandidate = null;
        peer._pc.onsignalingstatechange = null;
        peer._pc.ontrack = null;
        peer._pc.oniceconnectionstatechange = null;
        delete this.peerConnections[userID];
    }
};

/**
 * Private
 * @param {number} userId
 * @param {boolean} polite
 * @returns {qbRTCPeerConnection}
 */
WebRTCSession.prototype._createPeer = function (userId, polite) {
    if (!window.RTCPeerConnection) {
        throw new Error('_createPeer error: RTCPeerConnection is not supported in your browser');
    }

    this.startCallTime = new Date();

    var pcConfig = {
        iceServers: config.webrtc.iceServers,
    };

    Helpers.trace("_createPeer configuration: " + JSON.stringify(pcConfig));

    var peer = new qbRTCPeerConnection(pcConfig);
    peer._init(this, userId, this.ID, polite);

    return peer;
};

WebRTCSession.prototype._startReconnectTimer = function (userID) {
    var self = this;
    var delay = config.webrtc.disconnectTimeInterval * 1000;
    var peer = this.peerConnections[userID];

    peer._reconnecting = true;

    var reconnectTimeoutCallback = function () {
        Helpers.trace('disconnectTimeInterval reached for userID ' + userID);

        self._stopReconnectTimer(userID);

        self.peerConnections[userID].release();
        self._onSessionConnectionStateChangedListener(
            userID,
            Helpers.SessionConnectionState.CLOSED
        );

        self._closeSessionIfAllConnectionsClosed();
    };

    if (typeof this.onReconnectListener === 'function') {
        Utils.safeCallbackCall(
            this.onReconnectListener,
            this,
            userID,
            ReconnectionState.RECONNECTING
        );
    }

    Helpers.trace(
        '_startReconnectTimer for userID:' + userID + ', timeout: ' + delay
    );

    var iceConnectTimeoutCallback = function () {
        Helpers.trace('iceConnectTimeout reached for user ' + userID);
        if (self.iceConnectTimers[userID]) {
            clearTimeout(self.iceConnectTimers[userID]);
            self.iceConnectTimers[userID] = undefined;
            if (!self.reconnectTimers[userID]) {
                /** If connection won't be recovered - close session */
                self.reconnectTimers[userID] = setTimeout(
                    reconnectTimeoutCallback,
                    delay - ICE_TIMEOUT
                );
                self._reconnectToChat(function () {
                    if (self.state === WebRTCSession.State.ACTIVE &&
                        self.reconnectTimers[userID]) {
                        // only if session is active
                        self._reconnect(peer, true);
                    }
                });
            }
        }
    };

    if (!this.iceConnectTimers[userID]) {
        /**
         * Wait a bit before reconnecting. If network has not been changed -
         * ICE candidates are still valid and connection may recover shortly
         */
        this.iceConnectTimers[userID] = setTimeout(
            iceConnectTimeoutCallback,
            ICE_TIMEOUT
        );
    }
};


WebRTCSession.prototype._stopReconnectTimer = function (userID) {
    var peer = this.peerConnections[userID];
    if (this.iceConnectTimers[userID]) {
        clearTimeout(this.iceConnectTimers[userID]);
        this.iceConnectTimers[userID] = undefined;
    }
    if (this.reconnectTimers[userID]) {
        Helpers.trace('_stopReconnectTimer for userID: ' + userID);
        clearTimeout(this.reconnectTimers[userID]);
        this.reconnectTimers[userID] = undefined;
    }
    if (peer && peer._reconnecting) {
        peer._reconnecting = false;
        if (typeof this.onReconnectListener === 'function') {
            var state = peer._pc.iceConnectionState;
            Utils.safeCallbackCall(
                this.onReconnectListener,
                this,
                userID,
                state === 'connected' ?
                    ReconnectionState.RECONNECTED :
                    ReconnectionState.FAILED
            );
        }
    }
};

/**
 * Ping server until pong received, then call the `callback`
 * @param {Function} callback
 */
WebRTCSession.prototype._reconnectToChat = function (callback) {
    var self = this;
    var signalingProvider = this.signalingProvider;
    var reconnectToChat = function () {
        var _onReconnectListener = signalingProvider.chat.onReconnectListener;
        signalingProvider.chat.onReconnectListener = function () {
            if (typeof _onReconnectListener === 'function') {
                _onReconnectListener();
            }
            signalingProvider.chat.onReconnectListener = _onReconnectListener;
            callback();
        };
        signalingProvider.chat.reconnect();
    };
    if (signalingProvider && signalingProvider.chat) {
        try {
            /**
             * Ping chat server to make sure that chat connection
             * has been established
             */
            signalingProvider.chat.ping(function (e) {
                if (self.state !== WebRTCSession.State.CLOSED) {
                    if (e) {
                        // If not - reconnect to chat
                        reconnectToChat();
                    } else {
                        // If chat connected - call `callback`
                        callback();
                    }
                }
            });
        } catch (e) {
            if (self.state !== WebRTCSession.State.CLOSED) {
                /** Catch `ChatNotConnected` error and reconnect to chat */
                reconnectToChat();
            }
        }
    }
};

/**
 * @param {qbRTCPeerConnection} peerConnection
 * @param {boolean} [negotiate]
 * @returns {void}
 */
WebRTCSession.prototype._reconnect = function (peerConnection, negotiate) {
    if (!peerConnection || !peerConnection.userID) {
        return;
    }
    var userId = peerConnection.userID;
    var polite = peerConnection.polite;
    var _reconnecting = peerConnection._reconnecting;

    peerConnection.release();

    var pcConfig = {
        iceServers: config.webrtc.iceServers,
    };

    Helpers.trace("_reconnect peer configuration: " + JSON.stringify(pcConfig));

    var peer = new qbRTCPeerConnection(pcConfig);
    this.peerConnections[userId] = peer;
    peer._init(this, userId, this.ID, polite);
    peer._reconnecting = _reconnecting;
    peer.addLocalStream(this.localStream);
    if (negotiate) {
        peer.offerId = generateUUID();
        peer.negotiate();
    }
};

/** close peer connection and local stream */
WebRTCSession.prototype._close = function () {
    Helpers.trace('_close');

    for (var key in this.peerConnections) {
        var peer = this.peerConnections[key];
        this._stopReconnectTimer(peer.userID);

        try {
            peer.release();
        } catch (e) {
            console.warn('Peer close error:', e);
        }
    }

    this._closeLocalMediaStream();
    if (typeof this._detectSilentAudioTaskCleanup === 'function') {
        this._detectSilentAudioTaskCleanup();
        this._detectSilentAudioTaskCleanup = undefined;
    }
    if (typeof this._detectSilentVideoTaskCleanup === 'function') {
        this._detectSilentVideoTaskCleanup();
        this._detectSilentVideoTaskCleanup = undefined;
    }

    this.state = WebRTCSession.State.CLOSED;

    if (typeof this.onSessionCloseListener === 'function') {
        Utils.safeCallbackCall(this.onSessionCloseListener, this);
    }
};

WebRTCSession.prototype._closeSessionIfAllConnectionsClosed = function () {
    var isAllConnectionsClosed = Object
        .values(this.peerConnections)
        .every(function (peer) {
            return peer.state === qbRTCPeerConnection.State.CLOSED;
        });

    Helpers.trace("All peer connections closed: " + isAllConnectionsClosed);

    if (isAllConnectionsClosed) {
        this._closeLocalMediaStream();

        if (typeof this.onSessionCloseListener === 'function') {
            this.onSessionCloseListener(this);
        }

        this.state = WebRTCSession.State.CLOSED;
    }
};

WebRTCSession.prototype._closeLocalMediaStream = function () {
    if (this.localStream) {
        this.localStream.getTracks().forEach(function (track) {
            track.stop();
            track.enabled = false;
        });
        this.localStream = null;
    }
};

WebRTCSession.prototype._muteStream = function (bool, type) {
    if (type === 'audio' && this.localStream.getAudioTracks().length > 0) {
        this.localStream.getAudioTracks().forEach(function (track) {
            track.enabled = !!bool;
        });
        return;
    }

    if (type === 'video' && this.localStream.getVideoTracks().length > 0) {
        this.localStream.getVideoTracks().forEach(function (track) {
            track.enabled = !!bool;
        });
        return;
    }
};

WebRTCSession.prototype._clearAnswerTimer = function () {
    if (this.answerTimer) {
        Helpers.trace("_clearAnswerTimer");
        clearTimeout(this.answerTimer);
        this.answerTimer = null;
    }
};

WebRTCSession.prototype._startAnswerTimer = function () {
    Helpers.trace("_startAnswerTimer");

    var self = this;
    var answerTimeoutCallback = function () {
        Helpers.trace("_answerTimeoutCallback");

        if (typeof self.onSessionCloseListener === 'function') {
            self._close();
        }

        self.answerTimer = null;
    };

    var answerTimeInterval = config.webrtc.answerTimeInterval * 1000;
    this.answerTimer = setTimeout(answerTimeoutCallback, answerTimeInterval);
};

WebRTCSession.prototype._clearWaitingOfferOrAnswerTimer = function () {
    if (this.waitingOfferOrAnswerTimer) {
        Helpers.trace("_clearWaitingOfferOrAnswerTimer");
        clearTimeout(this.waitingOfferOrAnswerTimer);
        this.waitingOfferOrAnswerTimer = null;
    }
};

WebRTCSession.prototype._startWaitingOfferOrAnswerTimer = function (time) {
    var self = this,
        timeout = (config.webrtc.answerTimeInterval - time) < 0 ? 1 : config.webrtc.answerTimeInterval - time,
        waitingOfferOrAnswerTimeoutCallback = function () {
            Helpers.trace("waitingOfferOrAnswerTimeoutCallback");

            if (Object.keys(self.peerConnections).length > 0) {
                Object.keys(self.peerConnections).forEach(function (key) {
                    var peerConnection = self.peerConnections[key];
                    if (peerConnection.state === qbRTCPeerConnection.State.CONNECTING || peerConnection.state === qbRTCPeerConnection.State.NEW) {
                        self.processOnNotAnswer(peerConnection);
                    }
                });
            }

            self.waitingOfferOrAnswerTimer = null;
        };

    Helpers.trace("_startWaitingOfferOrAnswerTimer, timeout: " + timeout);

    this.waitingOfferOrAnswerTimer = setTimeout(waitingOfferOrAnswerTimeoutCallback, timeout * 1000);
};

WebRTCSession.prototype._uniqueOpponentsIDs = function () {
    var self = this;
    var opponents = [];

    if (this.initiatorID !== this.currentUserID) {
        opponents.push(this.initiatorID);
    }

    this.opponentsIDs.forEach(function (userID, i, arr) {
        if (userID != self.currentUserID) {
            opponents.push(parseInt(userID));
        }
    });

    return opponents;
};

WebRTCSession.prototype._uniqueOpponentsIDsWithoutInitiator = function () {
    var self = this;
    var opponents = [];

    this.opponentsIDs.forEach(function (userID, i, arr) {
        if (userID != self.currentUserID) {
            opponents.push(parseInt(userID));
        }
    });

    return opponents;
};

WebRTCSession.prototype.toString = function sessionToString() {
    return 'ID: ' + this.ID + ', initiatorID:  ' + this.initiatorID + ', opponentsIDs: ' + this.opponentsIDs + ', state: ' + this.state + ', callType: ' + this.callType;
};

function generateUUID() {
    var d = new Date().getTime();
    var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
        var r = (d + Math.random() * 16) % 16 | 0;
        d = Math.floor(d / 16);
        return (c == 'x' ? r : (r & 0x3 | 0x8)).toString(16);
    });
    return uuid;
}

/**
 * private _prepareExtension - replace property null to empty string
 * return object with property or empty if extension didn't set
 */
function _prepareExtension(extension) {
    var ext = {};

    try {
        if (({}).toString.call(extension) === '[object Object]') {
            ext.userInfo = extension;
            ext = JSON.parse(JSON.stringify(ext).replace(/null/g, "\"\""));
        } else {
            throw new Error('Invalid type of "extension" object.');
        }
    } catch (err) {
        Helpers.traceWarning(err.message);
    }

    return ext;
}

module.exports = WebRTCSession;

},{"../../qbConfig":252,"../../qbUtils":256,"./qbRTCPeerConnection":244,"./qbWebRTCHelpers":246,"./qbWebRTCSignalingConstants":248}],248:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC signaling constants)
 */

function WebRTCSignalingConstants() {}

WebRTCSignalingConstants.MODULE_ID = "WebRTCVideoChat";

WebRTCSignalingConstants.SignalingType = {
    CALL: 'call',
    ACCEPT: 'accept',
    REJECT: 'reject',
    STOP: 'hangUp',
    CANDIDATE: 'iceCandidates',
    PARAMETERS_CHANGED: 'update'
};

module.exports = WebRTCSignalingConstants;

},{}],249:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC signaling provider)
 */

require('strophe.js');

var SignalingConstants = require('./qbWebRTCSignalingConstants');

function WebRTCSignalingProcessor(service, delegate) {
    var self = this;

    self.service = service;
    self.delegate = delegate;

    this._onMessage = function(from, extraParams, delay, userId) {

        var extension = self._getExtension(extraParams),
            sessionId = extension.sessionID,
            signalType = extension.signalType;

        /** cleanup */
        delete extension.moduleIdentifier;
        delete extension.sessionID;
        delete extension.signalType;

        switch (signalType) {
            case SignalingConstants.SignalingType.CALL:
                if (typeof self.delegate._onCallListener === 'function'){
                    self.delegate._onCallListener(userId, sessionId, extension);
                }
                break;

            case SignalingConstants.SignalingType.ACCEPT:
                if (typeof self.delegate._onAcceptListener === 'function'){
                    self.delegate._onAcceptListener(userId, sessionId, extension);
                }
                break;

            case SignalingConstants.SignalingType.REJECT:
                if (typeof self.delegate._onRejectListener === 'function'){
                    self.delegate._onRejectListener(userId, sessionId, extension);
                }
                break;

            case SignalingConstants.SignalingType.STOP:
                if (typeof self.delegate._onStopListener === 'function'){
                    self.delegate._onStopListener(userId, sessionId, extension);
                }
                break;

            case SignalingConstants.SignalingType.CANDIDATE:
                if (typeof self.delegate._onIceCandidatesListener === 'function'){
                    self.delegate._onIceCandidatesListener(userId, sessionId, extension);
                }
                break;

            case SignalingConstants.SignalingType.PARAMETERS_CHANGED:
                if (typeof self.delegate._onUpdateListener === 'function'){
                    self.delegate._onUpdateListener(userId, sessionId, extension);
                }
                break;
        }
    };

    /**
     * Convert XML into JS object
     * @param {Element} extraParams 
     * @returns {Object}
     */
    this._getExtension = function(extraParams) {
        if (!extraParams) {
            return {};
        }

        var extension = {},
            iceCandidates = [],
            opponents = [];

        extraParams.childNodes.forEach(function (childNode) {
            if (childNode.nodeName === 'iceCandidates') {
                /** iceCandidates */
                childNode.childNodes.forEach(function (candidateNode) {
                    var candidate = {};
                    candidateNode.childNodes.forEach(function (node) {
                        candidate[node.nodeName] = node.textContent;
                    });
                    iceCandidates.push(candidate);
                });

            } else if (childNode.nodeName === 'opponentsIDs') {
                /** opponentsIDs */
                childNode.childNodes.forEach(function (opponentNode) {
                    var opponentId = opponentNode.textContent;
                    opponents.push(parseInt(opponentId));
                });
            } else {
                if (childNode.childNodes.length > 1) {
                    extension = self._XMLtoJS(
                        extension,
                        childNode.nodeName,
                        childNode
                    );
                } else {
                    if (childNode.nodeName === 'userInfo') {
                        extension = self._XMLtoJS(
                            extension,
                            childNode.nodeName,
                            childNode
                        );
                    } else {
                        extension[childNode.nodeName] = childNode.textContent;
                    }
                }
            }
        });

        if (iceCandidates.length > 0) {
            extension.iceCandidates = iceCandidates;
        }
        if (opponents.length > 0) {
            extension.opponentsIDs = opponents;
        }

        return extension;
    };

    /**
     * 
     * @param {Object} extension 
     * @param {string} title 
     * @param {Element} element 
     * @returns {Object}
     */
    this._XMLtoJS = function(extension, title, element) {
        var self = this;
        extension[title] = {};

        element.childNodes.forEach(function (childNode) {
            if (childNode.childNodes.length > 1) {
                extension[title] = self._XMLtoJS(
                    extension[title],
                    childNode.nodeName,
                    childNode
                );
            } else {
                extension[title][childNode.nodeName] = childNode.textContent;
            }
        });
        return extension;
    };
}

module.exports = WebRTCSignalingProcessor;

},{"./qbWebRTCSignalingConstants":248,"strophe.js":208}],250:[function(require,module,exports){
'use strict';

/** JSHint inline rules */
/* globals Strophe, $msg */

/**
 * QuickBlox JavaScript SDK
 * WebRTC Module (WebRTC signaling processor)
 */

require('strophe.js');

var Helpers = require('./qbWebRTCHelpers');
var SignalingConstants = require('./qbWebRTCSignalingConstants');
var Utils = require('../../qbUtils');
var config = require('../../qbConfig');

function WebRTCSignalingProvider(service, chat) {
    this.service = service;
    this.chat = chat;
}

WebRTCSignalingProvider.prototype.sendCandidate = function (userId, iceCandidates, ext) {
    var extension = ext || {};
    extension.iceCandidates = iceCandidates;

    this.sendMessage(userId, extension, SignalingConstants.SignalingType.CANDIDATE);
};

WebRTCSignalingProvider.prototype.sendMessage = function (userId, ext, signalingType) {
    var extension = ext || {},
        self = this;

    /** basic parameters */
    extension.moduleIdentifier = SignalingConstants.MODULE_ID;
    extension.signalType = signalingType;
    /** extension.sessionID */
    /** extension.callType */
    extension.platform = 'web';
    /** extension.callerID */
    /** extension.opponentsIDs */
    /** extension.sdp */

    if (extension.userInfo && !Object.keys(extension.userInfo).length) {
        delete extension.userInfo;
    }

    var params = {
        to: Helpers.getUserJid(userId, config.creds.appId),
        type: 'headline',
        id: Utils.getBsonObjectId()
    };

    var msg = $msg(params).c('extraParams', {
        xmlns: Strophe.NS.CLIENT
    });

    Object.keys(extension).forEach(function (field) {
        if (field === 'iceCandidates') {
            /** iceCandidates */
            msg.c('iceCandidates');
            extension[field].forEach(function (candidate) {
                msg.c('iceCandidate');
                Object.keys(candidate).forEach(function (key) {
                    msg.c(key).t(candidate[key]).up();
                });
                msg.up();
            });
            msg.up();
        } else if (field === 'opponentsIDs') {
            /** opponentsIDs */
            msg.c('opponentsIDs');
            extension[field].forEach(function (opponentId) {
                msg.c('opponentID').t(opponentId).up();
            });
            msg.up();
        } else if (typeof extension[field] === 'object') {
            self._JStoXML(field, extension[field], msg);
        } else {
            msg.c(field).t(extension[field]).up();
        }
    });

    this.chat.connection.send(msg);
};

/**
 * 
 * @param {string} title 
 * @param {Object} obj 
 * @param {Strophe.Builder} msg 
 */
WebRTCSignalingProvider.prototype._JStoXML = function (title, obj, msg) {
    var self = this;
    msg.c(title);
    Object.keys(obj).forEach(function (field) {
        if (typeof obj[field] === 'object')
            self._JStoXML(field, obj[field], msg);
        else
            msg.c(field).t(obj[field]).up();
    });
    msg.up();
};

module.exports = WebRTCSignalingProvider;

},{"../../qbConfig":252,"../../qbUtils":256,"./qbWebRTCHelpers":246,"./qbWebRTCSignalingConstants":248,"strophe.js":208}],251:[function(require,module,exports){
'use strict';

/**
 * QuickBlox JavaScript SDK
 * Chat Stream Management plugin
 * doc: http://xmpp.org/extensions/xep-0198.html
 *
 * To enable this features add to config
 * ```javascript
 * streamManagement: {
 -    enable: true
 - }
 * ```
 *
 * Uses listener by QB.chat.onSentMessageCallback
 *
 * ```javascript
 * QB.chat.onSentMessageCallback = function (messageLost, messageSent) {
 *     if (messageLost) {
 *         console.error('sendErrorCallback', messageLost);
 *     } else {
 *         console.info('sendMessageSuccessCallback', messageSent);
 *     }
 * };
 * ```
 */

/** JSHint inline rules */
/* globals $build */

var Utils = require('../qbUtils'),
    chatUtils = require('../modules/chat/qbChatHelpers');

function StreamManagement(options) {

    this._NS = 'urn:xmpp:sm:3';

    this._isStreamManagementEnabled = false;

    // Counter of the incoming stanzas
    this._clientProcessedStanzasCounter = null;

    // The client send stanza counter.
    this._clientSentStanzasCounter = null;

    this._intervalId = null;
    
    this._timeInterval = Utils.getTimeIntervalForCallBackMessage();

    this.sentMessageCallback = null;

    if(Utils.getEnv().browser){
        this._parser = new DOMParser();
    }

    // connection
    this._c = null;

    this._nodeBuilder = null;
    // Original connection.send method
    this._originalSend = null;

    // In progress stanzas queue
    this._stanzasQueue = [];
}


StreamManagement.prototype.enable = function (connection, client) {
    var self = this,
        stanza,
        enableParams = {
            xmlns: self._NS
        };

    if(!self._isStreamManagementEnabled){
        self._c = connection;
        self._originalSend = this._c.send;
        self._c.send = this.send.bind(self);
    }

    if(Utils.getEnv().browser){
        this._clientProcessedStanzasCounter = null;
        this._clientSentStanzasCounter = null;
        self._addEnableHandlers();
        stanza = $build('enable', enableParams);
    } else {
        self._nodeBuilder =  client.Stanza;
        self._addEnableHandlers();
        stanza = chatUtils.createStanza(self._nodeBuilder, enableParams, 'enable');
    }

    self._c.send(stanza);
};

StreamManagement.prototype._timeoutCallback = function () {
    var self = this,
        now = Date.now(),
        updatedStanzasQueue = [];

    if(self._stanzasQueue.length){
        for(var i = 0; i < self._stanzasQueue.length; i++){
            if(self._stanzasQueue[i] && self._stanzasQueue[i].time < now){
                self.sentMessageCallback(self._stanzasQueue[i].message);
            } else {
                updatedStanzasQueue.push(self._stanzasQueue[i]);
            }
        }

        self._stanzasQueue = updatedStanzasQueue;
    }
};

StreamManagement.prototype._addEnableHandlers = function () {
    var self = this;

    if (Utils.getEnv().browser) {
        self._c.XAddTrackedHandler(_incomingStanzaHandler.bind(self));
    } else {
        self._c.on('stanza', _incomingStanzaHandler.bind(self));
    }

    function _incomingStanzaHandler (stanza){
        /*
        * Getting incoming stanza tagName
        * */

        var tagName = stanza.name || stanza.tagName || stanza.nodeTree.tagName;

        if(tagName === 'enabled'){
            self._isStreamManagementEnabled = true;

            return true;
        }

        if (self._isStreamManagementEnabled && tagName === 'message') {
            clearInterval(self._intervalId);
            self._intervalId = setInterval(self._timeoutCallback.bind(self), self._timeInterval);

            return true;
        }

        if(chatUtils.getAttr(stanza, 'xmlns') !== self._NS){
            self._increaseReceivedStanzasCounter();
        }

        if(tagName === 'r'){
            var params = {
                    xmlns: self._NS,
                    h: self._clientProcessedStanzasCounter
                },
                answerStanza = Utils.getEnv().browser ? $build('a', params) :
                    chatUtils.createStanza(self._nodeBuilder, params, 'a');

            self._originalSend.call(self._c, answerStanza);

            return true;
        }

        if(tagName === 'a'){
            var h = parseInt(chatUtils.getAttr(stanza, 'h'));

            self._checkCounterOnIncomeStanza(h);
        }

        return true;
    }
};

StreamManagement.prototype.send = function (stanza, message) {
    var self = this,
        stanzaXML = stanza.nodeTree ? this._parser.parseFromString(stanza.nodeTree.outerHTML, "application/xml").childNodes[0] : stanza,
        tagName = stanzaXML.name || stanzaXML.tagName || stanzaXML.nodeTree.tagName,
        type = chatUtils.getAttr(stanzaXML, 'type'),
        bodyContent = chatUtils.getElementText(stanzaXML, 'body') || '',
        attachments = chatUtils.getAllElements(stanzaXML, 'attachment') || '';

    try {
        self._originalSend.call(self._c, stanza);
    } catch (e) {
        Utils.QBLog('[QBChat]', e.message);
    } finally {
        if (tagName === 'message' && (type === 'chat' || type === 'groupchat') && (bodyContent || attachments.length)) {
            self._sendStanzasRequest({
                message: message,
                time: Date.now() + self._timeInterval,
                expect: self._clientSentStanzasCounter
            });
        }
    
        self._clientSentStanzasCounter++;
    }

};

StreamManagement.prototype._sendStanzasRequest = function (data) {
    var self = this;

    if(self._isStreamManagementEnabled){
        self._stanzasQueue.push(data);

        var stanza = Utils.getEnv().browser ? $build('r', { xmlns: self._NS }) :
            chatUtils.createStanza(self._nodeBuilder, { xmlns: self._NS }, 'r');

        if (self._c.connected) {
            self._originalSend.call(self._c, stanza);
        } else {
            self._checkCounterOnIncomeStanza();
        }
    }
};

StreamManagement.prototype.getClientSentStanzasCounter = function(){
    return this._clientSentStanzasCounter;
};

StreamManagement.prototype._checkCounterOnIncomeStanza = function (count){
    var updatedStanzasQueue = [];

    if(this._stanzasQueue.length){
        for(var i = 0; i < this._stanzasQueue.length; i++){
            if(this._stanzasQueue[i].expect == count){
                this.sentMessageCallback(null, this._stanzasQueue[i].message);
            } else {
                updatedStanzasQueue.push(this._stanzasQueue[i]);
            }
        }
        this._stanzasQueue = updatedStanzasQueue;
    }
};

StreamManagement.prototype._increaseReceivedStanzasCounter = function(){
    this._clientProcessedStanzasCounter++;
};

module.exports = StreamManagement;

},{"../modules/chat/qbChatHelpers":235,"../qbUtils":256}],252:[function(require,module,exports){
'use strict';

/*
 * QuickBlox JavaScript SDK
 *
 * Configuration Module
 *
 * NOTE:
 *  - config.webrtc.statsReportTimeInterval [integer, sec]:
 *  could add listener onCallStatsReport(session, userId, bytesReceived) if
 *  want to get stats (bytesReceived) about peer every X sec;
 */

var config = {
  version: '2.16.4',
  buildNumber: '1159',
  creds: {
    'appId': 0,
    'authKey': '',
    'authSecret': '',
    'accountKey': ''
  },
  endpoints: {
    api: 'api.quickblox.com',
    chat: 'chat.quickblox.com',
    muc: 'muc.chat.quickblox.com'
  },
  hash: 'sha1',
  streamManagement: {
    enable: false
  },
  chatProtocol: {
    bosh: 'https://chat.quickblox.com:5281',
    websocket: 'wss://chat.quickblox.com:5291',
    active: 2
  },
  pingTimeout: 1,
  pingLocalhostTimeInterval: 5,
  chatReconnectionTimeInterval: 3,
  webrtc: {
    answerTimeInterval: 60,
    autoReject: true,
    incomingLimit: 1,
    dialingTimeInterval: 5,
    disconnectTimeInterval: 30,
    statsReportTimeInterval: false,
    iceServers: [
      {
        urls: ['turn:turn.quickblox.com', 'stun:turn.quickblox.com'],
        username: 'quickblox',
        credential: 'baccb97ba2d92d71e26eb9886da5f1e0'
      }
    ]
  },
  urls: {
    account: 'account_settings',
    session: 'session',
    login: 'login',
    users: 'users',
    chat: 'chat',
    blobs: 'blobs',
    geodata: 'geodata',
    pushtokens: 'push_tokens',
    subscriptions: 'subscriptions',
    events: 'events',
    data: 'data',
    addressbook: 'address_book',
    addressbookRegistered: 'address_book/registered_users',
    type: '.json'
  },
  on: {
    sessionExpired: null
  },
  timeout: null,
  debug: {
    mode: 0,
    file: null
  },
  addISOTime: false,
  qbTokenExpirationDate: null,
  liveSessionInterval: 120,
  callBackInterval: 30,
};

config.set = function(options) {
  if (typeof options.endpoints === 'object' && options.endpoints.chat) {
    config.endpoints.muc = 'muc.'+options.endpoints.chat;
    config.chatProtocol.bosh = 'https://'+options.endpoints.chat+':5281';
    config.chatProtocol.websocket = 'wss://'+options.endpoints.chat+':5291';
  }

  Object.keys(options).forEach(function(key) {
    if(key !== 'set' && config.hasOwnProperty(key)) {
      if(typeof options[key] !== 'object') {
        config[key] = options[key];
      } else {
        Object.keys(options[key]).forEach(function(nextkey) {
          if(config[key].hasOwnProperty(nextkey)){
            config[key][nextkey] = options[key][nextkey];
          }
        });
      }
    }

    // backward compatibility: for config.iceServers
    if(key === 'iceServers') {
      config.webrtc.iceServers = options[key];
    }
  });
};

config.updateSessionExpirationDate = function (tokenExpirationDate, headerHasToken = false) {
  var connectionTimeLag = 1; // minute
  var newDate;
  if (headerHasToken) {
    var d = tokenExpirationDate.replaceAll('-','/');
    newDate = new Date(d);
    newDate.setMinutes ( newDate.getMinutes() - connectionTimeLag);
  }
  else {
    newDate = new Date(tokenExpirationDate);
    newDate.setMinutes ( newDate.getMinutes() - connectionTimeLag);
    newDate.setMinutes ( newDate.getMinutes() + config.liveSessionInterval );
  }
  config.qbTokenExpirationDate = newDate;
};


module.exports = config;

},{}],253:[function(require,module,exports){
'use strict';

/*
 * QuickBlox JavaScript SDK
 *
 * Main SDK Module
 *
 */
var config = require('./qbConfig');
var Utils = require('./qbUtils');

// Actual QuickBlox API starts here
function QuickBlox() {}

QuickBlox.prototype = {
    /**
     * Return current version of QuickBlox JavaScript SDK
     * @memberof QB
     * */
    version: config.version,

    /**
     * Return current build number of QuickBlox JavaScript SDK
     * @memberof QB
     * */
    buildNumber: config.buildNumber,

    _getOS: Utils.getOS.bind(Utils),

    /**
     * @memberof QB
     * Initialize QuickBlox SDK({@link https://docs.quickblox.com/docs/js-setup#initialize-quickblox-sdk read more})
     * @param {Number | String} appIdOrToken - Application ID (from your admin panel) or Session Token.
     * @param {String | Number} authKeyOrAppId - Authorization key or Application ID. You need to set up Application ID if you use session token as appIdOrToken parameter.
     * @param {String} authSecret - Authorization secret key (from your admin panel).
     * @param {Object} configMap - Settings object for QuickBlox SDK.
     */
    init: function(appIdOrToken, authKeyOrAppId, authSecret, accountKey, configMap) {
        console.log('current platform: ', Utils.getEnv());
        if (typeof accountKey === 'string' && accountKey.length) {
            if (configMap && typeof configMap === 'object') {
                config.set(configMap);
            }
            config.creds.accountKey = accountKey;
        } else {
            console.warn('Parameter "accountKey" is missing. This will lead to error in next major release');
            console.warn('NOTE: Account migration will not work without "accountKey"');
            if (typeof accountKey === 'object') {
                config.set(accountKey);
            }
        }

        var SHARED_API_ENDPOINT = "api.quickblox.com";
        var SHARED_CHAT_ENDPOINT = "chat.quickblox.com";

        /** include dependencies */
        var Proxy = require('./qbProxy'),
            Auth = require('./modules/qbAuth'),
            Users = require('./modules/qbUsers'),
            Content = require('./modules/qbContent'),
            PushNotifications = require('./modules/qbPushNotifications'),
            Data = require('./modules/qbData'),
            AddressBook = require('./modules/qbAddressBook'),
            Chat = require('./modules/chat/qbChat'),
            DialogProxy = require('./modules/chat/qbDialog'),
            MessageProxy = require('./modules/chat/qbMessage');

        this.service = new Proxy();
        this.auth = new Auth(this.service);
        this.users = new Users(this.service);
        this.content = new Content(this.service);
        this.pushnotifications = new PushNotifications(this.service);
        this.data = new Data(this.service);
        this.addressbook = new AddressBook(this.service);
        this.chat = new Chat(this.service);
        this.chat.dialog = new DialogProxy(this.service);
        this.chat.message = new MessageProxy(this.service);

        if (Utils.getEnv().browser) {
            /** add adapter.js*/
            require('webrtc-adapter');

            /** add WebRTC API if API is avaible */
            if( Utils.isWebRTCAvailble() ) {
                var WebRTCClient = require('./modules/webrtc/qbWebRTCClient');
                this.webrtc = new WebRTCClient(this.service, this.chat);
            } else {
                this.webrtc = false;
            }
        } else {
            this.webrtc = false;
        }

        // Initialization by outside token
        if (typeof appIdOrToken === 'string' && (!authKeyOrAppId || typeof authKeyOrAppId === 'number') && !authSecret) {

            if(typeof authKeyOrAppId === 'number'){
                config.creds.appId = authKeyOrAppId;
            }

            this.service.setSession({ token: appIdOrToken });
        } else {
            config.creds.appId = appIdOrToken;
            config.creds.authKey = authKeyOrAppId;
            config.creds.authSecret = authSecret;
        }

        var shouldGetSettings = config.creds.accountKey && (
            !config.endpoints.api ||
            config.endpoints.api === SHARED_API_ENDPOINT ||
            !config.endpoints.chat ||
            config.endpoints.chat === SHARED_CHAT_ENDPOINT
        );
        if (shouldGetSettings) {
            var accountSettingsUrl = [
                'https://', SHARED_API_ENDPOINT, '/',
                config.urls.account,
                config.urls.type
            ].join('');
            // account settings
            this.service.ajax({
                url: accountSettingsUrl
            }, function (err, response) {
                if (!err && typeof response === 'object') {
                    var update = {
                        endpoints: {
                            api: response.api_endpoint.replace(/^https?:\/\//, ''),
                            chat: response.chat_endpoint
                        }
                    };
                    config.set(update);
                }
            });
        }
    },

    /**
     * Init QuickBlox SDK with User Account data to start session with token({@link https://docs.quickblox.com/docs/js-setup#initialize-quickblox-sdk-without-authorization-key-and-secret read more}).
     * @memberof QB
     * @param {Number} appId - Application ID (from your admin panel).
     * @param {String | Number} accountKey - Account key (from your admin panel).
     * @param {Object} configMap - Settings object for QuickBlox SDK.
     */
    initWithAppId: function(appId, accountKey, configMap) {
        //добавить проверку типа параметров
        if (typeof appId !== 'number') {
            throw new Error('Type of appId must be a number');
        }
        if (appId === '' || appId === undefined || appId === null ||
            accountKey === '' || accountKey === undefined || accountKey === null) {
            throw new Error('Cannot init QuickBlox without app credentials (app ID, auth key)');
        } else {
            this.init('', appId, null, accountKey, configMap);
        }
    },

    /**
     * Return current session({@link https://docs.quickblox.com/docs/js-authentication#get-session read more}).
     * @memberof QB
     * @param {getSessionCallback} callback - The getSessionCallback function.
     * */
    getSession: function(callback) {
        /**
         * This callback return session object..
         * @callback getSessionCallback
         * @param {Object} error - The error object.
         * @param {Object} session - Contains of session object.
         * */
        this.auth.getSession(callback);
    },

    /**
     * Set up user session token to current session and return it({@link https://docs.quickblox.com/docs/js-authentication#set-existing-session read more}).
     * @memberof QB
     * @param {String} token - A User Session Token.
     * @param {getSessionCallback} callback - The getSessionCallback function.
     * @callback getSessionCallback
     * @param {Object} error - The error object.
     * @param {Object} session - Contains of session object.
     * */
    startSessionWithToken: function(token, callback) {
        if (token === undefined) throw new Error('Cannot start session with undefined token');
        else if (token === '') throw new Error('Cannot start session with empty string token');
        else if (token === null) throw new Error('Cannot start session with null value token');
        else if (typeof callback !== 'function') throw new Error('Cannot start session without callback function');
        else {
            try {
                this.service.setSession({token: token});
            } catch (err) {
                callback(err, null);
            }
            if (typeof callback === 'function') {
                try{
                    this.auth.getSession(callback);
                    // TODO: pay attention on it, if we decide to remove application_id from QB.init:
                    // artan 06-09-2022
                    // should set  value application_id from session model into config.creds.appId
                }
                catch(er){
                    callback(er, null);
                }
            }
        }
    },

    /**
     * Create new session({@link https://docs.quickblox.com/docs/js-authentication#create-session read more}).
     * @memberof QB
     * @param {String} appIdOrToken Should be applecationID or QBtoken.
     * @param {createSessionCallback} callback
     * */
    createSession: function(params, callback) {
        /**
         * This callback return session object.
         * @callback createSession
         * @param {Object} error - The error object.
         * @param {Object} session - Contains of session object.
         * */
        this.auth.createSession(params, callback);
    },

    /**
     * Destroy current session({@link https://docs.quickblox.com/docs/js-authentication#destroy-session-token read more}).
     * @memberof QB
     * @param {destroySessionCallback} callback - The destroySessionCallback function.
     * */
    destroySession: function(callback) {
        /**
         * This callback returns error or empty string.
         * @callback destroySessionCallback
         * @param {Object | Null} error - The error object if got en error and null if success.
         * @param {Null | String} result - String (" ") if session was removed successfully.
         * */
        this.auth.destroySession(callback);
    },

    /**
     * Login to QuickBlox application({@link https://docs.quickblox.com/docs/js-authentication#log-in-user read more}).
     * @memberof QB
     * @param {Object} params - Params object for login into the session.
     * @param {loginCallback} callback - The loginCallback function.
     * */
    login: function(params, callback) {
        /**
         * This callback return error or user Object.
         * @callback loginCallback
         * @param {Object | Null} error - The error object if got en error and null if success.
         * @param {Null | Object} result - User data object if everything goes well and null on error.
         * */
        this.auth.login(params, callback);
    },

    /**
     * Remove user from current session, but doesn't destroy it({@link https://docs.quickblox.com/docs/js-authentication#log-out-user read more}).
     * @memberof QB
     * @param {logoutCallback} callback - The logoutCallback function.
     * */
    logout: function(callback) {
        /**
         * This callback return error or user Object.
         * @callback logoutCallback
         * @param {Object | Null} error - The error object if got en error and null if success.
         * @param {Null | String} result - String (" ") if session was removed successfully.
         * */
        this.auth.logout(callback);
    }

};

/**
 * @namespace
 */
var QB = new QuickBlox();

QB.QuickBlox = QuickBlox;

module.exports = QB;

},{"./modules/chat/qbChat":234,"./modules/chat/qbDialog":236,"./modules/chat/qbMessage":237,"./modules/qbAddressBook":238,"./modules/qbAuth":239,"./modules/qbContent":240,"./modules/qbData":241,"./modules/qbPushNotifications":242,"./modules/qbUsers":243,"./modules/webrtc/qbWebRTCClient":245,"./qbConfig":252,"./qbProxy":254,"./qbUtils":256,"webrtc-adapter":218}],254:[function(require,module,exports){
'use strict';

var config = require('./qbConfig');
var Utils = require('./qbUtils');

/**
 * For server-side applications through using npm package 'quickblox'
 * you should include the following lines
 */
var qbFetch, qbFormData;

if (Utils.getEnv().node) {
    qbFetch = require('node-fetch');
    qbFormData = require('form-data');
} else {
    qbFetch = fetch;
    qbFormData = FormData;
}

function ServiceProxy() {
    this.qbInst = {
        config: config,
        session: null
    };

    this.reqCount = 0;
}

ServiceProxy.prototype = {

    _fetchingSettings: false,
    _queue: [],

    setSession: function(session) {
        this.qbInst.session = session;
    },

    getSession: function() {
        return this.qbInst.session;
    },

    handleResponse: function(error, response, next, retry) {
        // can add middleware here...
        if (error) {
            const errorMsg = JSON.stringify(error.message).toLowerCase();
            if (typeof config.on.sessionExpired === 'function' &&
                error.code === 401 &&
                errorMsg.indexOf('session does not exist') > -1) {
                config.on.sessionExpired(function() {
                    next(error, response);
                }, retry);
            } else {
                next(error, null);
            }
        } else {
            if (config.addISOTime) {
                response = Utils.injectISOTimes(response);
            }
            next(null, response);
        }
    },

    startLogger: function(params) {
        var clonedData;

        ++this.reqCount;

        if (params.data && params.data.file) {
            clonedData = JSON.parse(JSON.stringify(params.data));
            clonedData.file = "...";
        } else if (Utils.getEnv().nativescript) {
            clonedData = JSON.stringify(params.data);
        } else {
            clonedData = params.data;
        }

        Utils.QBLog('[Request][' + this.reqCount + ']', (params.type || 'GET') + ' ' + params.url, clonedData ? clonedData : "");
    },

    ajax: function(params, callback) {

        if (this._fetchingSettings) {
            this._queue.push([params, callback]);
            return;
        }

        this.startLogger(params);

        var self = this,
            isGetOrHeadType = !params.type || params.type === 'GET' || params.type === 'HEAD',
            qbSessionToken = self.qbInst && self.qbInst.session && self.qbInst.session.token,
            isQBRequest = params.url.indexOf('s3.amazonaws.com') === -1,
            isMultipartFormData = params.contentType === false,
            qbDataType = params.dataType || 'json',
            qbUrl = params.url,
            qbRequest = {},
            qbRequestBody,
            qbResponse;

        qbRequest.method = params.type || 'GET';

        if (params.data) {
            qbRequestBody = _getBodyRequest();
            
            if (isGetOrHeadType) {
                qbUrl += '?' + qbRequestBody;
            } else {
                qbRequest.body = qbRequestBody;
            }
        }

        if (!isMultipartFormData) {
            qbRequest.headers = {
                'Content-Type': params.contentType || 'application/x-www-form-urlencoded; charset=UTF-8'
            };
        }

        if (isQBRequest) {
            if (!qbRequest.headers) {
                qbRequest.headers = {};
            }

            qbRequest.headers['QB-OS'] = Utils.getOS();
            qbRequest.headers['QB-SDK'] = 'JS ' + config.version + ' - Client';

            if(qbSessionToken) {
                qbRequest.headers['QB-Token'] = qbSessionToken;
            }
            if (params.url.indexOf(config.urls.account) > -1) {
                qbRequest.headers['QB-Account-Key'] = config.creds.accountKey;
                this._fetchingSettings = true;
            }
        }

        if (config.timeout) {
            qbRequest.timeout = config.timeout;
        }

        qbFetch(qbUrl, qbRequest)
            .then(function(response) {
                qbResponse = response;
                if (qbRequest.method === 'GET' || qbRequest.method === 'POST'){
                    var qbTokenExpirationDate = qbResponse.headers.get('qb-token-expirationdate');
                    var headerHasToken  = !(qbTokenExpirationDate === null ||
                        typeof qbTokenExpirationDate === 'undefined');
                    qbTokenExpirationDate  = (headerHasToken) ? qbTokenExpirationDate : new Date();
                    self.qbInst.config.updateSessionExpirationDate(qbTokenExpirationDate, headerHasToken);
                    Utils.QBLog('[Request][ajax]','header has token:',headerHasToken );
                    Utils.QBLog('[Request][ajax]','updateSessionExpirationDate ... Set value: ', self.qbInst.config.qbTokenExpirationDate );
                }

                if (qbDataType === 'text') {
                    return response.text();
                } else {
                    return response.json();
                }
            }, function() {
                // Need to research this issue, response doesn't exist if server will return empty body (status 200)
                qbResponse = {
                    status: 200
                };

                return ' ';
            }).then(function(body) {
            _requestCallback(null, qbResponse, body);
        }, function(error) {
            _requestCallback(error);
        }).catch((error) => {
            console.log('qbProxy fetch ... catch, error: ', error);
            _requestCallback(error);
        });

        /*
         * Private functions
         * Only for ServiceProxy.ajax() method closure
         */

        function _fixedEncodeURIComponent(str) {
            return encodeURIComponent(str).replace(/[#$&+,/:;=?@\[\]]/g, function(c) {
              return '%' + c.charCodeAt(0).toString(16);
            });
        }

        function _getBodyRequest() {
            var data = params.data,
                qbData;

            if (isMultipartFormData) {
                qbData = new qbFormData();
                Object.keys(data).forEach(function(item) {
                    if (params.fileToCustomObject && (item === 'file')) {
                        qbData.append(item, data[item].data, data[item].name);
                    } else {
                        qbData.append(item, params.data[item]);
                    }
                });
            } else if (params.isNeedStringify) {
                qbData = JSON.stringify(data);
            } else {
                qbData = Object.keys(data).map(function(k) {
                    if (Utils.isObject(data[k])) {
                        return Object.keys(data[k]).map(function(v) {
                            return _fixedEncodeURIComponent(k) + '[' + (Utils.isArray(data[k]) ? '' : v) + ']=' + _fixedEncodeURIComponent(data[k][v]);
                        }).sort().join('&');
                    } else {
                        return _fixedEncodeURIComponent(k) + (Utils.isArray(data[k]) ? '[]' : '' ) + '=' + _fixedEncodeURIComponent(data[k]);
                    }
                }).sort().join('&');
            }

            return qbData;
        }

        function _requestCallback(error, response, body) {
            var statusCode = response && (response.status || response.statusCode),
                responseMessage,
                responseBody;

            if (error || (statusCode !== 200 && statusCode !== 201 && statusCode !== 202)) {
                var errorMsg;

                try {
                    errorMsg = {
                        code: response && statusCode || error && error.code,
                        status: response && response.headers && response.headers.status || 'error',
                        message: body || error && error.errno,
                        detail: body && body.errors || error && error.syscall
                    };
                } catch(e) {
                    errorMsg = error;
                }

                responseBody = body || error || body.errors;
                responseMessage = Utils.getEnv().nativescript ? JSON.stringify(responseBody) : responseBody;

                Utils.QBLog('[Response][' + self.reqCount + ']', 'error', statusCode, responseMessage);

                self.handleResponse(errorMsg, null, callback, retry);
            } else {
                responseBody = (body && body !== ' ') ? body : 'empty body';
                responseMessage = Utils.getEnv().nativescript ? JSON.stringify(responseBody) : responseBody;

                Utils.QBLog('[Response][' + self.reqCount + ']', responseMessage);

                self.handleResponse(null, body, callback, retry);
            }
            if (self._fetchingSettings) {
                self._fetchingSettings = false;
                while (self._queue.length) {
                    var args = self._queue.shift();
                    self.ajax.apply(self, args);
                }
            }
        }

        function retry(session) {
            if (!!session) {
                self.setSession(session);
                self.ajax(params, callback);
            }
        }
    }
};

module.exports = ServiceProxy;

},{"./qbConfig":252,"./qbUtils":256,"form-data":81,"node-fetch":105}],255:[function(require,module,exports){
'use strict';
/** JSHint inline rules */
/* globals Strophe */

/**
 * QuickBlox JavaScript SDK
 * Strophe Connection Object
 */

require('strophe.js');

var config = require('./qbConfig');
var chatPRTCL = config.chatProtocol;
var Utils = require('./qbUtils');

function Connection() {
  var protocol = chatPRTCL.active === 1 ? chatPRTCL.bosh : chatPRTCL.websocket;
  var conn = new Strophe.Connection(protocol);

  if (chatPRTCL.active === 1) {
    conn.xmlInput = function(data) {
      if (data.childNodes[0]) {
        for (var i = 0, len = data.childNodes.length; i < len; i++) {
          Utils.QBLog('[QBChat]', 'RECV:', data.childNodes[i]);
        }
      }
    };
    conn.xmlOutput = function(data) {
      if (data.childNodes[0]) {
        for (var i = 0, len = data.childNodes.length; i < len; i++) {
          Utils.QBLog('[QBChat]', 'SENT:', data.childNodes[i]);
        }
      }
    };
  } else {
    conn.xmlInput = function(data) {
      Utils.QBLog('[QBChat]', 'RECV:', data);
    };
    conn.xmlOutput = function(data) {
      Utils.QBLog('[QBChat]', 'SENT:', data);
    };
  }

  return conn;
}

module.exports = Connection;

},{"./qbConfig":252,"./qbUtils":256,"strophe.js":208}],256:[function(require,module,exports){
(function (global){(function (){
/* eslint no-console: 2 */

'use strict';

var config = require('./qbConfig');

var unsupported = "This function isn't supported outside of the browser (...yet)";

var isNativeScript = typeof global === 'object' && (global.hasOwnProperty('android') || global.hasOwnProperty('NSObject')),
    isNode = typeof window === 'undefined' && typeof exports === 'object' && !isNativeScript,
    isBrowser = typeof window !== 'undefined';

if (isNode) {
    var fs = require('fs');
    var os = require('os');
}

// The object for type MongoDB.Bson.ObjectId
// http://docs.mongodb.org/manual/reference/object-id/
var ObjectId = {
    machine: Math.floor(Math.random() * 16777216).toString(16),
    pid: Math.floor(Math.random() * 32767).toString(16),
    increment: 0
};

var Utils = {
    /**
     * [getEnv get a name of an execution environment]
     * @return {object} return names of env. (node/browser)
     */
    getEnv: function() {
        return {
            'nativescript': isNativeScript,
            'browser': isBrowser,
            'node': isNode
        };
    },

    _getOSInfoFromNodeJS: function() {
        return os.platform();
    },

    _getOSInfoFromBrowser: function() {
        return window.navigator.userAgent;
    },

    _getOSInfoFromNativeScript: function() {
        return (global && global.hasOwnProperty('android') ? 'Android' : 'iOS') + ' - NativeScript';
    },

    getOS: function() {
        var self = this;
        var osName = 'An unknown OS';

        var OS_LIST = [
            {
                osName:'Windows',
                codeNames:['Windows', 'win32']
            },
            {
                osName:'Linux',
                codeNames:['Linux', 'linux']
            },
            {
                osName:'macOS',
                codeNames:['Mac OS', 'darwin']
            }
        ];

        var platformInfo;

        if (self.getEnv().browser) {
            platformInfo = self._getOSInfoFromBrowser();
        } else if (self.getEnv().node)  {
            platformInfo = self._getOSInfoFromNodeJS();
        } else if (self.getEnv().nativescript) {
            return self._getOSInfoFromNativeScript();
        }

        OS_LIST.forEach(function(osInfo) {
            osInfo.codeNames.forEach(function(codeName) {
                var index = platformInfo.indexOf(codeName);

                if (index !== -1) {
                    osName = osInfo.osName;
                }
            });
        });

        return osName;
    },

    safeCallbackCall: function() {
        var listenerString = arguments[0].toString(),
            listenerName = listenerString.split('(')[0].split(' ')[1],
            argumentsCopy = [], listenerCall;

        for (var i = 0; i < arguments.length; i++) {
            argumentsCopy.push(arguments[i]);
        }

        listenerCall = argumentsCopy.shift();

        try {
            listenerCall.apply(null, argumentsCopy);
        } catch (err) {
            if (listenerName === '') {
                console.error('Error: ' + err);
            }else{
                console.error('Error in listener ' + listenerName + ': ' + err);
            }
        }
    },

    randomNonce: function() {
        return Math.floor(Math.random() * 10000);
    },

    unixTime: function() {
        return Math.floor(Date.now() / 1000);
    },

    getUrl: function(base, id) {
        var resource = id ? '/' + id : '';
        return 'https://' + config.endpoints.api + '/' + base + resource + config.urls.type;
    },

    isArray: function(arg) {
        return Object.prototype.toString.call(arg) === '[object Array]';
    },

    isObject: function(arg) {
        return Object.prototype.toString.call(arg) === '[object Object]';
    },

    // Generating BSON ObjectId and converting it to a 24 character string representation
    // Changed from https://github.com/justaprogrammer/ObjectId.js/blob/master/src/main/javascript/Objectid.js
    getBsonObjectId: function() {
        var timestamp = this.unixTime().toString(16),
            increment = (ObjectId.increment++).toString(16);

        if (increment > 0xffffff) ObjectId.increment = 0;

        return '00000000'.substr(0, 8 - timestamp.length) + timestamp +
            '000000'.substr(0, 6 - ObjectId.machine.length) + ObjectId.machine +
            '0000'.substr(0, 4 - ObjectId.pid.length) + ObjectId.pid +
            '000000'.substr(0, 6 - increment.length) + increment;
    },

    getCurrentTime: function() {
      return ((new Date()).toTimeString().split(' ')[0]);
    },

    injectISOTimes: function(data) {
        if (data.created_at) {
            if (typeof data.created_at === 'number') data.iso_created_at = new Date(data.created_at * 1000).toISOString();
            if (typeof data.updated_at === 'number') data.iso_updated_at = new Date(data.updated_at * 1000).toISOString();
        }
        else if (data.items) {
            for (var i = 0, len = data.items.length; i < len; ++i) {
                if (typeof data.items[i].created_at === 'number') data.items[i].iso_created_at = new Date(data.items[i].created_at * 1000).toISOString();
                if (typeof data.items[i].updated_at === 'number') data.items[i].iso_updated_at = new Date(data.items[i].updated_at * 1000).toISOString();
            }
        }
        return data;
    },

    QBLog: function(){
        if (this.loggers) {
            for (var i=0; i<this.loggers.length; ++i) {
                this.loggers[i](arguments);
            }

            return;
        }

        var logger;

        this.loggers = [];

        var consoleLoggerFunction = function(){
            var logger = function(args){
                console.log.apply(console, Array.prototype.slice.call(args));
            };

            return logger;
        };

        var fileLoggerFunction = function(){
            var logger = function(args){
                if (!fs) {
                    throw unsupported;
                } else {
                    var data = [];

                    for (var i = 0; i < args.length; i++) {
                        data.push(JSON.stringify(args[i]));
                    }

                    data = data.join(' ');

                    var toLog = '\n' + new Date() + '. ' + data;

                    fs.appendFile(config.debug.file, toLog, function(err) {
                        if(err) {
                            return console.error('Error while writing log to file. Error: ' + err);
                        }
                    });
                }
            };

            return logger;
        };

        // Build loggers
        // format "debug: { }"

        if(typeof config.debug === 'object'){
            if(typeof config.debug.mode === 'number'){
                if(config.debug.mode == 1){
                    logger = consoleLoggerFunction();
                    this.loggers.push(logger);
                } else if(config.debug.mode == 2){
                    logger = fileLoggerFunction();
                    this.loggers.push(logger);
                }
            } else if(typeof config.debug.mode === 'object'){
                var self = this;

                config.debug.mode.forEach(function(mode) {
                    if(mode === 1){
                        logger = consoleLoggerFunction();
                        self.loggers.push(logger);
                    } else if (mode === 2){
                        logger = fileLoggerFunction();
                        self.loggers.push(logger);
                    }
                });
            }

            // format "debug: true"
            // backward compatibility
        }else if (typeof config.debug === 'boolean'){
            if(config.debug){
                logger = consoleLoggerFunction();
                this.loggers.push(logger);
            }
        }

        if(this.loggers){
            for(var j=0;j<this.loggers.length;++j){
                this.loggers[j](arguments);
            }
        }
    },

    isWebRTCAvailble: function() {
        /** Shims */
        var RTCPeerConnection = window.RTCPeerConnection,
            IceCandidate = window.RTCIceCandidate,
            SessionDescription = window.RTCSessionDescription,
            MediaDevices = window.navigator.mediaDevices;

        return Boolean(RTCPeerConnection) &&
            Boolean(IceCandidate) &&
            Boolean(SessionDescription) &&
            Boolean(MediaDevices);
    },

    getError: function(code, detail, moduleName) {
        var errorMsg = {
            code: code,
            status: 'error',
            detail: detail
        };

        switch(code){
            case 401:
                errorMsg.message = 'Unauthorized';
                break;

            case 403:
                errorMsg.message = 'Forbidden';
                break;

            case 408:
                errorMsg.message = 'Request Timeout';
                break;

            case 422:
                errorMsg.message = 'Unprocessable Entity';
                break;

            case 502:
                errorMsg.message = 'Bad Gateway';
                break;

            default:
                errorMsg.message = 'Unknown error';
                break;
        }

        this.QBLog('[' + moduleName + ']', 'Error:', detail);

        return errorMsg;
    },

    MergeArrayOfObjects: function (arrayTo, arrayFrom){
        var merged = JSON.parse(JSON.stringify(arrayTo));

        firstLevel: for(var i = 0; i < arrayFrom.length; i++){
            var newItem = arrayFrom[i];

            for(var j = 0; j < merged.length; j++){
                if(newItem.user_id === merged[j].user_id){
                    merged[j] = newItem;
                    continue firstLevel;
                }
            }
            merged.push(newItem);
        }
        return merged;
    },

    getTimeIntervalForCallBackMessage: function() {
        const timeInterval = typeof config.callBackInterval === 'undefined' ? 2 : config.callBackInterval;
        return timeInterval *  1000;
    }
};

module.exports = Utils;

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./qbConfig":252,"fs":32,"os":139}]},{},[253])(253)
});