tor-browser

The Tor Browser
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iterables-iteration-undefined.js (605B)

      1 // Copyright (C) 2025 Kevin Gibbons. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-iterator.zipkeyed
      6 description: >
      7  undefined-valued properties are skipped in "iterables" iteration.
      8 includes: [compareArray.js]
      9 features: [joint-iteration]
     10 ---*/
     11 
     12 
     13 var iterables = {
     14  a: undefined,
     15  b: ['value for b'],
     16 };
     17 
     18 var result = Array.from(Iterator.zipKeyed(iterables));
     19 
     20 assert.sameValue(result.length, 1);
     21 assert.compareArray(Reflect.ownKeys(result[0]), ["b"]);
     22 assert.compareArray(Object.values(result[0]), ["value for b"]);
     23 
     24 reportCompare(0, 0);