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