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- '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;
- }
- });
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