test262/test/built-ins/GeneratorFunction/extensibility.js

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-properties-of-the-generatorfunction-constructor
es6id: 25.2.2
description: Object extensibility
info: >
  The value of the [[Extensible]] internal slot of the GeneratorFunction
  constructor is true.
features: [generators]
---*/

var GeneratorFunction = Object.getPrototypeOf(function* () {}).constructor;

assert(Object.isExtensible(GeneratorFunction));