tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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super-must-be-called.js (853B)

      1 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 es6id: 23.2.1
      5 description: Super need to be called to initialize internals
      6 info: |
      7  23.2.1 The Set Constructor
      8 
      9  ...
     10 
     11  The Set constructor is designed to be subclassable. It may be used as the
     12  value in an extends clause of a class definition. Subclass constructors that
     13  intend to inherit the specified Set behaviour must include a super call to the
     14  Set constructor to create and initialize the subclass instance with the
     15  internal state necessary to support the Set.prototype built-in methods.
     16 ---*/
     17 
     18 class S1 extends Set {
     19  constructor() {}
     20 }
     21 
     22 assert.throws(ReferenceError, function() {
     23  new S1();
     24 });
     25 
     26 class S2 extends Set {
     27  constructor() {
     28    super();
     29  }
     30 }
     31 
     32 new S2();
     33 
     34 reportCompare(0, 0);