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24 lines
468 B
JavaScript
24 lines
468 B
JavaScript
'use strict';
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var has = require('has');
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var assertRecord = require('../helpers/assertRecord');
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var Type = require('./Type');
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// https://www.ecma-international.org/ecma-262/6.0/#sec-isdatadescriptor
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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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assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
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if (!has(Desc, '[[Value]]') && !has(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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