19 lines
555 B
JavaScript
19 lines
555 B
JavaScript
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'use strict';
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var IteratorComplete = require('./IteratorComplete');
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var IteratorNext = require('./IteratorNext');
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var Type = require('./Type');
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var assertRecord = require('../helpers/assertRecord');
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// https://262.ecma-international.org/14.0/#sec-iteratorstep
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module.exports = function IteratorStep(iteratorRecord) {
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assertRecord(Type, 'Iterator Record', 'iteratorRecord', iteratorRecord);
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var result = IteratorNext(iteratorRecord); // step 1
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var done = IteratorComplete(result); // step 2
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return done === true ? false : result; // steps 3-4
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};
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