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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var callBound = require('call-bind/callBound');
- var $TypeError = GetIntrinsic('%TypeError%');
- var $indexOf = callBound('Array.prototype.indexOf', true) || callBound('String.prototype.indexOf');
- var $push = callBound('Array.prototype.push');
- var Get = require('./Get');
- var IsArray = require('./IsArray');
- var ToLength = require('./ToLength');
- var ToString = require('./ToString');
- var Type = require('./Type');
- var defaultElementTypes = ['Undefined', 'Null', 'Boolean', 'String', 'Symbol', 'Number', 'Object'];
- // https://262.ecma-international.org/6.0/#sec-createlistfromarraylike
- module.exports = function CreateListFromArrayLike(obj) {
- var elementTypes = arguments.length > 1
- ? arguments[1]
- : defaultElementTypes;
- if (Type(obj) !== 'Object') {
- throw new $TypeError('Assertion failed: `obj` must be an Object');
- }
- if (!IsArray(elementTypes)) {
- throw new $TypeError('Assertion failed: `elementTypes`, if provided, must be an array');
- }
- var len = ToLength(Get(obj, 'length'));
- var list = [];
- var index = 0;
- while (index < len) {
- var indexName = ToString(index);
- var next = Get(obj, indexName);
- var nextType = Type(next);
- if ($indexOf(elementTypes, nextType) < 0) {
- throw new $TypeError('item type ' + nextType + ' is not a valid elementType');
- }
- $push(list, next);
- index += 1;
- }
- return list;
- };
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