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21 lines
707 B
21 lines
707 B
'use strict'; |
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// https://github.com/tc39/proposal-iterator-helpers |
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var $ = require('../internals/export'); |
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var apply = require('../internals/function-apply'); |
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var anObject = require('../internals/an-object'); |
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var createIteratorProxy = require('../internals/iterator-create-proxy'); |
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var IteratorProxy = createIteratorProxy(function (args) { |
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var result = anObject(apply(this.next, this.iterator, args)); |
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var done = this.done = !!result.done; |
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if (!done) return [this.index++, result.value]; |
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}); |
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$({ target: 'Iterator', proto: true, real: true, forced: true }, { |
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asIndexedPairs: function asIndexedPairs() { |
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return new IteratorProxy({ |
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iterator: anObject(this), |
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index: 0 |
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}); |
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} |
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});
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