main
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Last change
on this file 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
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100644
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File size:
561 bytes
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| 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 hasOwn = require('hasown');
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| 6 |
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| 7 | var isPropertyDescriptor = require('../helpers/records/property-descriptor');
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| 8 |
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| 9 | // https://262.ecma-international.org/5.1/#sec-8.10.2
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| 10 |
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| 11 | module.exports = function IsDataDescriptor(Desc) {
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| 12 | if (typeof Desc === 'undefined') {
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| 13 | return false;
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| 14 | }
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| 15 |
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| 16 | if (!isPropertyDescriptor(Desc)) {
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| 17 | throw new $TypeError('Assertion failed: `Desc` must be a Property Descriptor');
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| 18 | }
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| 19 |
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| 20 | if (!hasOwn(Desc, '[[Value]]') && !hasOwn(Desc, '[[Writable]]')) {
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| 21 | return false;
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| 22 | }
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| 23 |
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| 24 | return true;
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| 25 | };
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