tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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call-bind-this-value-twice.js (1004B)

      1 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-super-keyword
      5 es6id: 12.3.5
      6 description: Abrupt completion from re-binding "this" value
      7 info: |
      8  [...]
      9  6. Let result be ? Construct(func, argList, newTarget).
     10  7. Let thisER be GetThisEnvironment( ).
     11  8. Return ? thisER.BindThisValue(result).
     12 
     13  8.1.1.3.1 BindThisValue
     14 
     15  1. Let envRec be the function Environment Record for which the method was
     16     invoked.
     17  2. Assert: envRec.[[ThisBindingStatus]] is not "lexical".
     18  3. If envRec.[[ThisBindingStatus]] is "initialized", throw a ReferenceError
     19     exception.
     20 features: [class]
     21 ---*/
     22 
     23 var caught;
     24 function Parent() {}
     25 
     26 class Child extends Parent {
     27  constructor() {
     28    super();
     29    try {
     30      super();
     31    } catch (err) {
     32      caught = err;
     33    }
     34  }
     35 }
     36 
     37 new Child();
     38 
     39 assert.sameValue(typeof caught, 'object');
     40 assert.sameValue(caught.constructor, ReferenceError);
     41 
     42 reportCompare(0, 0);