[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var callBound = require('call-bind/callBound');
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| 4 |
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| 5 | var $TypeError = require('es-errors/type');
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| 6 | var $indexOf = callBound('Array.prototype.indexOf', true) || callBound('String.prototype.indexOf');
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| 7 | var $push = callBound('Array.prototype.push');
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| 8 |
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| 9 | var Get = require('./Get');
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| 10 | var IsArray = require('./IsArray');
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| 11 | var ToLength = require('./ToLength');
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| 12 | var ToString = require('./ToString');
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| 13 | var Type = require('./Type');
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| 14 |
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| 15 | var defaultElementTypes = ['Undefined', 'Null', 'Boolean', 'String', 'Symbol', 'Number', 'Object'];
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| 16 |
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| 17 | // https://262.ecma-international.org/6.0/#sec-createlistfromarraylike
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| 18 | module.exports = function CreateListFromArrayLike(obj) {
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| 19 | var elementTypes = arguments.length > 1
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| 20 | ? arguments[1]
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| 21 | : defaultElementTypes;
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| 22 |
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| 23 | if (Type(obj) !== 'Object') {
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| 24 | throw new $TypeError('Assertion failed: `obj` must be an Object');
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| 25 | }
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| 26 | if (!IsArray(elementTypes)) {
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| 27 | throw new $TypeError('Assertion failed: `elementTypes`, if provided, must be an array');
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| 28 | }
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| 29 | var len = ToLength(Get(obj, 'length'));
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| 30 | var list = [];
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| 31 | var index = 0;
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| 32 | while (index < len) {
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| 33 | var indexName = ToString(index);
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| 34 | var next = Get(obj, indexName);
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| 35 | var nextType = Type(next);
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| 36 | if ($indexOf(elementTypes, nextType) < 0) {
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| 37 | throw new $TypeError('item type ' + nextType + ' is not a valid elementType');
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| 38 | }
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| 39 | $push(list, next);
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| 40 | index += 1;
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| 41 | }
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| 42 | return list;
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| 43 | };
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