1 var $ = require('../internals/export');
2 var fails = require('../internals/fails');
3 var isObject = require('../internals/is-object');
5 var nativeIsExtensible = Object.isExtensible;
6 var FAILS_ON_PRIMITIVES = fails(function () { nativeIsExtensible(1); });
8 // `Object.isExtensible` method
9 // https://tc39.es/ecma262/#sec-object.isextensible
10 $({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, {
11 isExtensible: function isExtensible(it) {
12 return isObject(it) ? nativeIsExtensible ? nativeIsExtensible(it) : true : false;