mirror of
https://github.com/musix-org/musix-oss
synced 2024-11-14 16:00:17 +00:00
32 lines
705 B
JavaScript
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;
|
|
};
|