tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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not-a-constructor.js (855B)

      1 // Copyright (C) 2020 Rick Waldron. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-ecmascript-standard-built-in-objects
      6 description: >
      7  parseInt does not implement [[Construct]], is not new-able
      8 info: |
      9  ECMAScript Function Objects
     10 
     11  Built-in function objects that are not identified as constructors do not
     12  implement the [[Construct]] internal method unless otherwise specified in
     13  the description of a particular function.
     14 
     15  sec-evaluatenew
     16 
     17  ...
     18  7. If IsConstructor(constructor) is false, throw a TypeError exception.
     19  ...
     20 includes: [isConstructor.js]
     21 features: [Reflect.construct, arrow-function]
     22 ---*/
     23 
     24 assert.sameValue(isConstructor(parseInt), false, 'isConstructor(parseInt) must return false');
     25 
     26 assert.throws(TypeError, () => {
     27  new parseInt(1);
     28 });
     29 
     30 
     31 reportCompare(0, 0);