tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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targetdesc-is-not-configurable.js (686B)

      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: 9.5.10
      5 description: >
      6    [[Delete]] (P)
      7 
      8    A property cannot be reported as deleted, if it exists as a non-configurable
      9    own property of the target object.
     10 info: |
     11    14. If targetDesc.[[Configurable]] is false, throw a TypeError exception.
     12 features: [Proxy]
     13 ---*/
     14 
     15 var target = {};
     16 var p = new Proxy(target, {
     17  deleteProperty: function() {
     18    return true;
     19  }
     20 });
     21 
     22 Object.defineProperty(target, "attr", {
     23  configurable: false,
     24  value: 1
     25 });
     26 
     27 assert.throws(TypeError, function() {
     28  delete p.attr;
     29 });
     30 
     31 reportCompare(0, 0);