tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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symbol_own_property.js (679B)

      1 // Copyright (C) 2021 Jamie Kyle.  All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-object.hasown
      6 description: Object.hasOwn called with symbol property key
      7 info: |
      8  Object.hasOwn ( _O_, _P_ )
      9 
     10  1. Let _obj_ be ? ToObject(_O_).
     11  1. Let _key_ be ? ToPropertyKey(_P_).
     12  ...
     13 author: Jamie Kyle
     14 features: [Symbol, Object.hasOwn]
     15 ---*/
     16 
     17 var obj = {};
     18 var sym = Symbol();
     19 
     20 assert.sameValue(
     21  Object.hasOwn(obj, sym),
     22  false,
     23  "Returns false if symbol own property not found"
     24 );
     25 
     26 obj[sym] = 0;
     27 
     28 assert.sameValue(
     29  Object.hasOwn(obj, sym),
     30  true,
     31  "Returns true if symbol own property found"
     32 );
     33 
     34 reportCompare(0, 0);