tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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subclassing.js (1009B)

      1 // Copyright 2011-2012 Norbert Lindenberg. All rights reserved.
      2 // Copyright 2012 Mozilla Corporation. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 es5id: 11.1.2
      7 description: Tests that Intl.NumberFormat can be subclassed.
      8 author: Norbert Lindenberg
      9 includes: [compareArray.js]
     10 ---*/
     11 
     12 // get a number format and have it format an array of numbers for comparison with the subclass
     13 var locales = ["tlh", "id", "en"];
     14 var a = [0, 1, -1, -123456.789, -Infinity, NaN];
     15 var referenceNumberFormat = new Intl.NumberFormat(locales);
     16 var referenceFormatted = a.map(referenceNumberFormat.format);
     17 
     18 class MyNumberFormat extends Intl.NumberFormat {
     19  constructor(locales, options) {
     20    super(locales, options);
     21    // could initialize MyNumberFormat properties
     22  }
     23  // could add methods to MyNumberFormat.prototype
     24 }
     25 
     26 var format = new MyNumberFormat(locales);
     27 var actual = a.map(format.format);
     28 assert.compareArray(actual, referenceFormatted);
     29 
     30 reportCompare(0, 0);