main
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Last change
on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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Property mode
set to
100644
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File size:
724 bytes
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| [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 Call = require('./Call');
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| 6 | var Get = require('./Get');
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| 7 | var IsCallable = require('./IsCallable');
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| 8 | var Type = require('./Type');
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| 9 |
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| 10 | // https://262.ecma-international.org/15.0/#sec-getiteratorfrommethod
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| 11 |
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| 12 | module.exports = function GetIteratorFromMethod(obj, method) {
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| 13 | if (!IsCallable(method)) {
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| 14 | throw new $TypeError('method must be a function');
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| 15 | }
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| 16 |
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| 17 | var iterator = Call(method, obj); // step 1
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| 18 | if (Type(iterator) !== 'Object') {
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| 19 | throw new $TypeError('iterator must return an object'); // step 2
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| 20 | }
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| 21 |
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| 22 | var nextMethod = Get(iterator, 'next'); // step 3
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| 23 | return { // steps 4-5
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| 24 | '[[Iterator]]': iterator,
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| 25 | '[[NextMethod]]': nextMethod,
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| 26 | '[[Done]]': false
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| 27 | };
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| 28 | };
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