import _curry3 from './internal/_curry3.js';
import _path from './internal/_path.js';
import equals from './equals.js';


/**
 * Determines whether a nested path on an object has a specific value, in
 * [`R.equals`](#equals) terms. Most likely used to filter a list.
 *
 * @func
 * @memberOf R
 * @since v0.7.0
 * @category Relation
 * @typedefn Idx = String | Int | Symbol
 * @sig a -> [Idx] -> {a} -> Boolean
 * @param {*} val The value to compare the nested property with
 * @param {Array} path The path of the nested property to use
 * @param {Object} obj The object to check the nested property in
 * @return {Boolean} `true` if the value equals the nested object property,
 *         `false` otherwise.
 * @see R.whereEq, R.propEq, R.pathSatisfies, R.equals
 * @example
 *
 *      const user1 = { address: { zipCode: 90210 } };
 *      const user2 = { address: { zipCode: 55555 } };
 *      const user3 = { name: 'Bob' };
 *      const users = [ user1, user2, user3 ];
 *      const isFamous = R.pathEq(90210, ['address', 'zipCode']);
 *      R.filter(isFamous, users); //=> [ user1 ]
 */
var pathEq = _curry3(function pathEq(val, pathAr, obj) {
  return equals(_path(pathAr, obj), val);
});
export default pathEq;