48 lines
1.1 KiB
Plaintext
48 lines
1.1 KiB
Plaintext
'use strict';
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var Get = require('es-abstract/2023/Get');
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var IteratorComplete = require('es-abstract/2023/IteratorComplete');
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var IteratorNext = require('es-abstract/2023/IteratorNext');
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var Type = require('es-abstract/2023/Type');
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var assertRecord = require('es-abstract/helpers/assertRecord');
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// https://262.ecma-international.org/15.0/#sec-iteratorstepvalue
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module.exports = function IteratorStepValue(iteratorRecord) {
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assertRecord(Type, 'Iterator Record', 'iteratorRecord', iteratorRecord);
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/* eslint no-param-reassign: 0 */
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var result;
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try {
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result = IteratorNext(iteratorRecord); // step 1
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} catch (e) { // step 2
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iteratorRecord['[[Done]]'] = true; // step 2.a
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throw e; // step 2.b
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}
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var done;
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try {
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done = IteratorComplete(result); // step 4
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} catch (e) { // step 5
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iteratorRecord['[[Done]]'] = true; // step 5.a
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throw e; // step 5.b
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}
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if (done) { // step 7
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iteratorRecord['[[Done]]'] = true; // step 7.a
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return 'DONE'; // step 7.b
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}
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var value;
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try {
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value = Get(result, 'value'); // step 8
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} catch (e) { // step 9
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iteratorRecord['[[Done]]'] = true; // step 9.a
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throw e; // step 10
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}
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return value; // step 10
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};
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