26 lines
561 B
JavaScript
26 lines
561 B
JavaScript
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'use strict';
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var $TypeError = require('es-errors/type');
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var hasOwn = require('hasown');
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var isPropertyDescriptor = require('../helpers/records/property-descriptor');
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// https://262.ecma-international.org/5.1/#sec-8.10.2
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module.exports = function IsDataDescriptor(Desc) {
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if (typeof Desc === 'undefined') {
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return false;
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}
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if (!isPropertyDescriptor(Desc)) {
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throw new $TypeError('Assertion failed: `Desc` must be a Property Descriptor');
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}
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if (!hasOwn(Desc, '[[Value]]') && !hasOwn(Desc, '[[Writable]]')) {
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return false;
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}
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return true;
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};
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