tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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undefined-own-property.js (684B)

      1 // Copyright (C) 2015 Leonardo Balter. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 es6id: 26.1.7
      5 description: >
      6  Return undefined for an non existing own property.
      7 info: |
      8  26.1.7 Reflect.getOwnPropertyDescriptor ( target, propertyKey )
      9 
     10  ...
     11  4. Let desc be target.[[GetOwnProperty]](key).
     12  5. ReturnIfAbrupt(desc).
     13  6. Return FromPropertyDescriptor(desc).
     14 
     15  6.2.4.4 FromPropertyDescriptor ( Desc )
     16 
     17  1. If Desc is undefined, return undefined.
     18 features: [Reflect]
     19 ---*/
     20 
     21 var o = Object.create({
     22  p: 1
     23 });
     24 
     25 var result = Reflect.getOwnPropertyDescriptor(o, 'p');
     26 assert.sameValue(result, undefined);
     27 
     28 reportCompare(0, 0);