%PDF- %PDF-
Direktori : /var/www/html/node_modules/es-abstract/2020/ |
Current File : /var/www/html/node_modules/es-abstract/2020/CreateListFromArrayLike.js |
'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 LengthOfArrayLike = require('./LengthOfArrayLike'); var ToString = require('./ToString'); var Type = require('./Type'); // https://262.ecma-international.org/11.0/#sec-createlistfromarraylike module.exports = function CreateListFromArrayLike(obj) { var elementTypes = arguments.length > 1 ? arguments[1] : ['Undefined', 'Null', 'Boolean', 'String', 'Symbol', 'Number', 'Object']; if (Type(obj) !== 'Object') { throw new $TypeError('Assertion failed: `obj` must be an Object'); } if (!IsArray(elementTypes)) { throw new $TypeError('Assertion failed: `elementTypes`, if provided, must be an array'); } var len = LengthOfArrayLike(obj); var list = []; var index = 0; while (index < len) { var indexName = ToString(index); var next = Get(obj, indexName); var nextType = Type(next); if ($indexOf(elementTypes, nextType) < 0) { throw new $TypeError('item type ' + nextType + ' is not a valid elementType'); } $push(list, next); index += 1; } return list; };