tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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targetdesc-undefined-target-is-not-extensible.js (741B)

      1 // Copyright (C) 2015 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 es6id: 9.5.6
      5 description: >
      6    Throw a TypeError exception if Desc is not configurable and target is not
      7    extensible, and trap result is true.
      8 info: |
      9    [[DefineOwnProperty]] (P, Desc)
     10 
     11    ...
     12    19. If targetDesc is undefined, then
     13        a. If extensibleTarget is false, throw a TypeError exception.
     14    ...
     15 features: [Proxy]
     16 ---*/
     17 
     18 var target = {};
     19 var p = new Proxy(target, {
     20  defineProperty: function(t, prop, desc) {
     21    return true;
     22  }
     23 });
     24 
     25 Object.preventExtensions(target);
     26 
     27 assert.throws(TypeError, function() {
     28  Object.defineProperty(p, "foo", {});
     29 });
     30 
     31 reportCompare(0, 0);