tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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result-is-undefined-target-is-not-extensible.js (749B)

      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: 9.5.5
      5 description: >
      6    Throws a TypeError exception if trap result is undefined and target is not
      7    extensible
      8 info: |
      9    [[GetOwnProperty]] (P)
     10 
     11    ...
     12    14. If trapResultObj is undefined, then
     13        ...
     14        e. If ToBoolean(extensibleTarget) is false, throw a TypeError exception.
     15    ...
     16 features: [Proxy]
     17 ---*/
     18 
     19 var target = {
     20  foo: 1
     21 };
     22 
     23 var p = new Proxy(target, {
     24  getOwnPropertyDescriptor: function(t, prop) {
     25    return;
     26  }
     27 });
     28 
     29 Object.preventExtensions(target);
     30 
     31 assert.throws(TypeError, function() {
     32  Object.getOwnPropertyDescriptor(p, "foo");
     33 });
     34 
     35 reportCompare(0, 0);