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35 lines
872 B
35 lines
872 B
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $TypeError = GetIntrinsic('%TypeError%'); |
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var getIteratorMethod = require('../helpers/getIteratorMethod'); |
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var AdvanceStringIndex = require('./AdvanceStringIndex'); |
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var Call = require('./Call'); |
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var GetMethod = require('./GetMethod'); |
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var IsArray = require('./IsArray'); |
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var Type = require('./Type'); |
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// https://ecma-international.org/ecma-262/6.0/#sec-getiterator |
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module.exports = function GetIterator(obj, method) { |
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var actualMethod = method; |
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if (arguments.length < 2) { |
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actualMethod = getIteratorMethod( |
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{ |
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AdvanceStringIndex: AdvanceStringIndex, |
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GetMethod: GetMethod, |
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IsArray: IsArray, |
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Type: Type |
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}, |
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obj |
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); |
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} |
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var iterator = Call(actualMethod, obj); |
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if (Type(iterator) !== 'Object') { |
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throw new $TypeError('iterator must return an object'); |
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} |
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return iterator; |
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};
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