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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 23.3.1
description: Super need to be called to initialize internals
info: |
23.3.1 The WeakMap Constructor
...
The WeakMap constructor is designed to be subclassable. It may be used as the
value in an extends clause of a class definition. Subclass constructors that
intend to inherit the specified WeakMap behaviour must include a super call to
the WeakMap constructor to create and initialize the subclass instance with
the internal state necessary to support the WeakMap.prototype built-in
methods.
features: [WeakMap]
---*/
class M1 extends WeakMap {
constructor() {}
}
assert.throws(ReferenceError, function() {
new M1();
});
class M2 extends WeakMap {
constructor() {
super();
}
}
new M2();
reportCompare(0, 0);