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55 lines
1.8 KiB
Plaintext
55 lines
1.8 KiB
Plaintext
'use strict';
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var setToStringTag = require('es-set-tostringtag');
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var hasProto = require('has-proto')();
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var iterProto = require('../Iterator.prototype/implementation');
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var SLOT = require('internal-slot');
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var CreateIterResultObject = require('es-abstract/2024/CreateIterResultObject');
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var GeneratorResume = require('../aos/GeneratorResume');
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var GeneratorResumeAbrupt = require('../aos/GeneratorResumeAbrupt');
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var IteratorCloseAll = require('../aos/IteratorCloseAll');
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var ReturnCompletion = require('../aos/ReturnCompletion');
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var implementation;
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var o = { // in an object, for name inference
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'return': function () {
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var O = this; // step 1
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SLOT.assert(O, '[[UnderlyingIterators]]'); // step 2
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SLOT.assert(O, '[[GeneratorState]]'); // step 3
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if (SLOT.get(O, '[[GeneratorState]]') === 'suspendedStart') { // step 4
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SLOT.set(O, '[[GeneratorState]]', 'completed'); // step 4.a
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IteratorCloseAll(SLOT.get(O, '[[UnderlyingIterators]]'), ReturnCompletion(void undefined)); // step 4.c
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return CreateIterResultObject(void undefined, true); // step 4.d
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}
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var C = ReturnCompletion(void undefined); // step 5
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return GeneratorResumeAbrupt(O, C, 'Iterator Helper'); // step 6
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}
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};
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if (hasProto) {
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implementation = {
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__proto__: iterProto,
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next: function next() {
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return GeneratorResume(this, void undefined, 'Iterator Helper');
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},
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'return': o['return']
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};
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setToStringTag(implementation, 'Iterator Helper');
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} else {
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var IteratorHelper = function IteratorHelper() {};
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IteratorHelper.prototype = iterProto;
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implementation = new IteratorHelper();
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delete implementation.constructor;
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implementation.next = function next() {
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return GeneratorResume(this, void undefined, 'Iterator Helper');
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};
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implementation['return'] = o['return'];
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}
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module.exports = implementation;
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