Acme.BookStore.HttpApi.Host/node_modules/es5-ext/array/from/shim.js

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"use strict";

var iteratorSymbol = require("es6-symbol").iterator
  , isArguments    = require("../../function/is-arguments")
  , isFunction     = require("../../function/is-function")
  , toPosInt       = require("../../number/to-pos-integer")
  , callable       = require("../../object/valid-callable")
  , validValue     = require("../../object/valid-value")
  , isValue        = require("../../object/is-value")
  , isString       = require("../../string/is-string")
  , isArray        = Array.isArray
  , call           = Function.prototype.call
  , desc           = { configurable: true, enumerable: true, writable: true, value: null }
  , defineProperty = Object.defineProperty;

// eslint-disable-next-line complexity, max-lines-per-function
module.exports = function (arrayLike /*, mapFn, thisArg*/) {
	var mapFn = arguments[1]
	  , thisArg = arguments[2]
	  , Context
	  , i
	  , j
	  , arr
	  , length
	  , code
	  , iterator
	  , result
	  , getIterator
	  , value;

	arrayLike = Object(validValue(arrayLike));

	if (isValue(mapFn)) callable(mapFn);
	if (!this || this === Array || !isFunction(this)) {
		// Result: Plain array
		if (!mapFn) {
			if (isArguments(arrayLike)) {
				// Source: Arguments
				length = arrayLike.length;
				if (length !== 1) return Array.apply(null, arrayLike);
				arr = new Array(1);
				arr[0] = arrayLike[0];
				return arr;
			}
			if (isArray(arrayLike)) {
				// Source: Array
				arr = new Array(length = arrayLike.length);
				for (i = 0; i < length; ++i) arr[i] = arrayLike[i];
				return arr;
			}
		}
		arr = [];
	} else {
		// Result: Non plain array
		Context = this;
	}

	if (!isArray(arrayLike)) {
		if ((getIterator = arrayLike[iteratorSymbol]) !== undefined) {
			// Source: Iterator