| var $ = require('../internals/export'); |
| var getBuiltIn = require('../internals/get-built-in'); |
| var anObject = require('../internals/an-object'); |
| var FREEZING = require('../internals/freezing'); |
| |
| // `Reflect.preventExtensions` method |
| // https://tc39.github.io/ecma262/#sec-reflect.preventextensions |
| $({ target: 'Reflect', stat: true, sham: !FREEZING }, { |
| preventExtensions: function preventExtensions(target) { |
| anObject(target); |
| try { |
| var objectPreventExtensions = getBuiltIn('Object', 'preventExtensions'); |
| if (objectPreventExtensions) objectPreventExtensions(target); |
| return true; |
| } catch (error) { |
| return false; |
| } |
| } |
| }); |