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32 lines
861 B
32 lines
861 B
'use strict'; |
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var $TypeError = require('es-errors/type'); |
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var IteratorStep = require('./IteratorStep'); |
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var IteratorValue = require('./IteratorValue'); |
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var isIteratorRecord = require('../helpers/records/iterator-record'); |
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// https://262.ecma-international.org/16.0/#sec-iteratorstepvalue |
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module.exports = function IteratorStepValue(iteratorRecord) { |
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if (!isIteratorRecord(iteratorRecord)) { |
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throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); |
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} |
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var result = IteratorStep(iteratorRecord); // step 1 |
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if (!result || result === 'DONE') { // step 2 |
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return result; // step 2.a |
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} |
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var value; |
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try { |
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value = IteratorValue(result); // step 3 |
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} catch (e) { // step 4 |
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// eslint-disable-next-line no-param-reassign |
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iteratorRecord['[[Done]]'] = true; // step 4.a |
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throw e; // step 5 |
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} |
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return value; // step 5 |
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};
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