You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
18 lines
783 B
18 lines
783 B
'use strict';
|
|
var $ = require('../internals/export');
|
|
var isObject = require('../internals/is-object');
|
|
var onFreeze = require('../internals/internal-metadata').onFreeze;
|
|
var FREEZING = require('../internals/freezing');
|
|
var fails = require('../internals/fails');
|
|
|
|
// eslint-disable-next-line es/no-object-preventextensions -- safe
|
|
var $preventExtensions = Object.preventExtensions;
|
|
var FAILS_ON_PRIMITIVES = fails(function () { $preventExtensions(1); });
|
|
|
|
// `Object.preventExtensions` method
|
|
// https://tc39.es/ecma262/#sec-object.preventextensions
|
|
$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {
|
|
preventExtensions: function preventExtensions(it) {
|
|
return $preventExtensions && isObject(it) ? $preventExtensions(onFreeze(it)) : it;
|
|
}
|
|
});
|
|
|