tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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decl-lex-configurable-global.js (1266B)

      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-globaldeclarationinstantiation
      5 es6id: 15.1.8
      6 description: Lexical declarations "shadow" configurable global properties
      7 info: |
      8  [...]
      9  5. For each name in lexNames, do
     10     [...]
     11     c. Let hasRestrictedGlobal be ? envRec.HasRestrictedGlobalProperty(name).
     12     d. If hasRestrictedGlobal is true, throw a SyntaxError exception.
     13  [...]
     14  16. For each element d in lexDeclarations do
     15      a. NOTE Lexically declared names are only instantiated here but not
     16         initialized.
     17      b. For each element dn of the BoundNames of d do
     18         i. If IsConstantDeclaration of d is true, then
     19            1. Perform ? envRec.CreateImmutableBinding(dn, true).
     20         ii. Else,
     21             1. Perform ? envRec.CreateMutableBinding(dn, false).
     22 ---*/
     23 
     24 let Array;
     25 
     26 assert.sameValue(Array, undefined);
     27 assert.sameValue(typeof this.Array, 'function');
     28 
     29 // DO NOT USE propertyHelper API!
     30 let descriptor = Object.getOwnPropertyDescriptor(this, 'Array');
     31 assert.sameValue(descriptor.configurable, true);
     32 assert.sameValue(descriptor.enumerable, false);
     33 assert.sameValue(descriptor.writable, true);
     34 
     35 reportCompare(0, 0);