tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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regular-subclassing.js (670B)

      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: Subclassing Function
      6 info: |
      7  19.3.1 The Boolean Constructor
      8 
      9  The Boolean constructor is designed to be subclassable. It may be used as the
     10  value of an extends clause of a class definition.
     11  ...
     12 ---*/
     13 
     14 class Bln extends Boolean {}
     15 
     16 var b1 = new Bln(1);
     17 
     18 assert.notSameValue(b1, true, 'b1 is an Boolean object');
     19 assert.sameValue(b1.valueOf(), true);
     20 
     21 var b2 = new Bln(0);
     22 assert.notSameValue(b2, false, 'bln is an Boolean object');
     23 assert.sameValue(b2.valueOf(), false);
     24 
     25 reportCompare(0, 0);