| var $ = require('../internals/export'); | |
| var fails = require('../internals/fails'); | |
| var isObject = require('../internals/is-object'); | |
| var nativeIsFrozen = Object.isFrozen; | |
| var FAILS_ON_PRIMITIVES = fails(function () { nativeIsFrozen(1); }); | |
| // `Object.isFrozen` method | |
| // https://tc39.github.io/ecma262/#sec-object.isfrozen | |
| $({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, { | |
| isFrozen: function isFrozen(it) { | |
| return isObject(it) ? nativeIsFrozen ? nativeIsFrozen(it) : false : true; | |
| } | |
| }); |