JSTests/test262/test/language/statements/class/subclass/bound-function.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-runtime-semantics-classdefinitionevaluation
es6id: 14.5.14
description: SuperClass may be a bound function object
info: |
  [...]
  5. If ClassHeritageopt is not present, then
     [...]
  6. Else,
     [...]
     e. If superclass is null, then
        [...]
     f. Else if IsConstructor(superclass) is false, throw a TypeError exception.
     g. Else,
        i. Let protoParent be ? Get(superclass, "prototype").
        ii. If Type(protoParent) is neither Object nor Null, throw a TypeError
            exception.
        iii. Let constructorParent be superclass.
     [...]
---*/

var bound = function() {}.bind();
bound.prototype = {};

class C extends bound {}

assert.sameValue(Object.getPrototypeOf(new C()), C.prototype);