setup-php/node_modules/es-abstract/helpers/isPropertyDescriptor.js
Shivam Mathur 8f9786b73f init
2019-09-06 05:17:43 +05:30

32 lines
705 B
JavaScript

'use strict';
var GetIntrinsic = require('../GetIntrinsic');
var has = require('has');
var $TypeError = GetIntrinsic('%TypeError%');
module.exports = function IsPropertyDescriptor(ES, Desc) {
if (ES.Type(Desc) !== 'Object') {
return false;
}
var allowed = {
'[[Configurable]]': true,
'[[Enumerable]]': true,
'[[Get]]': true,
'[[Set]]': true,
'[[Value]]': true,
'[[Writable]]': true
};
for (var key in Desc) { // eslint-disable-line
if (has(Desc, key) && !allowed[key]) {
return false;
}
}
if (ES.IsDataDescriptor(Desc) && ES.IsAccessorDescriptor(Desc)) {
throw new $TypeError('Property Descriptors may not be both accessor and data descriptors');
}
return true;
};