'use strict'; | |
var has = require('has'); | |
var assertRecord = require('../helpers/assertRecord'); | |
var Type = require('./Type'); | |
// https://ecma-international.org/ecma-262/6.0/#sec-isdatadescriptor | |
module.exports = function IsDataDescriptor(Desc) { | |
if (typeof Desc === 'undefined') { | |
return false; | |
} | |
assertRecord(Type, 'Property Descriptor', 'Desc', Desc); | |
if (!has(Desc, '[[Value]]') && !has(Desc, '[[Writable]]')) { | |
return false; | |
} | |
return true; | |
}; |