33 lines
861 B
Plaintext
33 lines
861 B
Plaintext
'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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