module.exports = function array_replace_recursive(arr) {
  //  discuss at: https://locutus.io/php/array_replace_recursive/
  // original by: Brett Zamir (https://brett-zamir.me)
  //   example 1: array_replace_recursive({'citrus' : ['orange'], 'berries' : ['blackberry', 'raspberry']}, {'citrus' : ['pineapple'], 'berries' : ['blueberry']})
  //   returns 1: {citrus : ['pineapple'], berries : ['blueberry', 'raspberry']}

  let i = 0
  let p = ''
  const argl = arguments.length
  let retObj

  if (argl < 2) {
    throw new Error('There should be at least 2 arguments passed to array_replace_recursive()')
  }

  // Although docs state that the arguments are passed in by reference,
  // it seems they are not altered, but rather the copy that is returned
  // So we make a copy here, instead of acting on arr itself
  if (Object.prototype.toString.call(arr) === '[object Array]') {
    retObj = []
    for (p in arr) {
      retObj.push(arr[p])
    }
  } else {
    retObj = {}
    for (p in arr) {
      retObj[p] = arr[p]
    }
  }

  for (i = 1; i < argl; i++) {
    for (p in arguments[i]) {
      if (retObj[p] && typeof retObj[p] === 'object') {
        retObj[p] = array_replace_recursive(retObj[p], arguments[i][p])
      } else {
        retObj[p] = arguments[i][p]
      }
    }
  }

  return retObj
}