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; | |
} | |
}); |