| 'use strict'; | |
| var GetIntrinsic = require('get-intrinsic'); | |
| var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true); | |
| var $isExtensible = GetIntrinsic('%Object.isExtensible%', true); | |
| var isPrimitive = require('../helpers/isPrimitive'); | |
| // https://262.ecma-international.org/6.0/#sec-isextensible-o | |
| module.exports = $preventExtensions | |
| ? function IsExtensible(obj) { | |
| return !isPrimitive(obj) && $isExtensible(obj); | |
| } | |
| : function IsExtensible(obj) { | |
| return !isPrimitive(obj); | |
| }; |