[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var $TypeError = require('es-errors/type');
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| 4 |
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| 5 | var GeneratorStart = require('./GeneratorStart');
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| 6 | var IsArray = require('es-abstract/2024/IsArray');
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| 7 | var IsCallable = require('es-abstract/2024/IsCallable');
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| 8 | var OrdinaryObjectCreate = require('es-abstract/2024/OrdinaryObjectCreate');
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| 9 |
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| 10 | var every = require('es-abstract/helpers/every');
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| 11 |
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| 12 | var SLOT = require('internal-slot');
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| 13 |
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| 14 | var safeConcat = require('safe-array-concat');
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| 15 |
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| 16 | var isString = function isString(slot) {
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| 17 | return typeof slot === 'string';
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| 18 | };
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| 19 |
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| 20 | module.exports = function CreateIteratorFromClosure(closure, generatorBrand, proto) {
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| 21 | if (!IsCallable(closure)) {
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| 22 | throw new $TypeError('`closure` must be a function');
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| 23 | }
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| 24 | if (typeof generatorBrand !== 'string') {
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| 25 | throw new $TypeError('`generatorBrand` must be a string');
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| 26 | }
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| 27 | var extraSlots = arguments.length > 3 ? arguments[3] : [];
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| 28 | if (arguments.length > 3) {
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| 29 | if (!IsArray(extraSlots) || !every(extraSlots, isString)) {
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| 30 | throw new $TypeError('`extraSlots` must be a List of String internal slot names');
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| 31 | }
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| 32 | }
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| 33 | var internalSlotsList = safeConcat(extraSlots, ['[[GeneratorContext]]', '[[GeneratorBrand]]', '[[GeneratorState]]']); // step 3
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| 34 | var generator = OrdinaryObjectCreate(proto, internalSlotsList); // steps 4, 6
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| 35 | SLOT.set(generator, '[[GeneratorBrand]]', generatorBrand); // step 5
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| 36 |
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| 37 | SLOT.assert(closure, '[[Sentinel]]'); // our userland slot
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| 38 | SLOT.set(generator, '[[Sentinel]]', SLOT.get(closure, '[[Sentinel]]')); // our userland slot
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| 39 | SLOT.assert(closure, '[[CloseIfAbrupt]]'); // our second userland slot
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| 40 | SLOT.set(generator, '[[CloseIfAbrupt]]', SLOT.get(closure, '[[CloseIfAbrupt]]')); // our second userland slot
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| 41 |
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| 42 | GeneratorStart(generator, closure); // step 13
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| 43 |
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| 44 | return generator; // step 15
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| 45 | };
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