tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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trap-is-undefined.js (589B)

      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: 9.5.3
      5 description: >
      6    Return target.[[IsExtensible]]() if trap is undefined.
      7 info: |
      8    [[IsExtensible]] ( )
      9 
     10    ...
     11    7. If trap is undefined, then
     12        a. Return target.[[IsExtensible]]().
     13    ...
     14 features: [Proxy]
     15 ---*/
     16 
     17 var target = {};
     18 var p = new Proxy(target, {});
     19 
     20 assert.sameValue(Object.isExtensible(p), true);
     21 
     22 Object.preventExtensions(target);
     23 
     24 assert.sameValue(Object.isExtensible(p), false);
     25 
     26 reportCompare(0, 0);