tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

super-must-be-called.js (796B)

      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: 19.3.1
      5 description: Super need to be called to initialize Boolean internals
      6 info: |
      7  19.3.1 The Boolean Constructor
      8 
      9  ...
     10  Subclass constructors that intend to inherit the specified Boolean behaviour
     11  must include a super call to the Boolean constructor to create and initialize
     12  the subclass instance with a [[BooleanData]] internal slot.
     13 ---*/
     14 
     15 class Bln extends Boolean {
     16  constructor() {}
     17 }
     18 
     19 // Boolean internals are not initialized
     20 assert.throws(ReferenceError, function() {
     21  new Bln(1);
     22 });
     23 
     24 class Bln2 extends Boolean {
     25  constructor() {
     26    super();
     27  }
     28 }
     29 
     30 var b = new Bln2(1);
     31 assert(b instanceof Boolean);
     32 
     33 reportCompare(0, 0);