tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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groupLength.js (645B)

      1 // Copyright (c) 2023 Ecma International.  All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-map.groupby
      6 description: Map.groupBy populates Map with correct keys and values
      7 info: |
      8  Map.groupBy ( items, callbackfn )
      9 
     10  ...
     11 includes: [compareArray.js]
     12 features: [array-grouping, Map, Symbol.iterator]
     13 ---*/
     14 
     15 const arr = ['hello', 'test', 'world'];
     16 
     17 const map = Map.groupBy(arr, function (i) { return i.length; });
     18 
     19 assert.compareArray(Array.from(map.keys()), [5, 4]);
     20 assert.compareArray(map.get(5), ['hello', 'world']);
     21 assert.compareArray(map.get(4), ['test']);
     22 
     23 reportCompare(0, 0);