debian-mirror-gitlab/core-js/modules/es.object.is-extensible.js

15 lines
550 B
JavaScript
Raw Normal View History

2019-09-25 13:30:05 +05:30
var $ = require('../internals/export');
var fails = require('../internals/fails');
var isObject = require('../internals/is-object');
var nativeIsExtensible = Object.isExtensible;
var FAILS_ON_PRIMITIVES = fails(function () { nativeIsExtensible(1); });
// `Object.isExtensible` method
// https://tc39.github.io/ecma262/#sec-object.isextensible
$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, {
isExtensible: function isExtensible(it) {
return isObject(it) ? nativeIsExtensible ? nativeIsExtensible(it) : true : false;
}
});