tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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var-env-global-lex-non-strict.js (970B)

      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-evaldeclarationinstantiation
      5 description: Variable collision with global lexical binding
      6 info: |
      7    [...]
      8    5. If strict is false, then
      9       a. If varEnvRec is a global Environment Record, then
     10          i. For each name in varNames, do
     11             1. If varEnvRec.HasLexicalDeclaration(name) is true, throw a
     12                SyntaxError exception.
     13             2. NOTE: eval will not create a global var declaration that would
     14                be shadowed by a global lexical declaration.
     15       [...]
     16 features: [let]
     17 ---*/
     18 
     19 let x;
     20 var caught;
     21 
     22 // The `assert.throws` helper function would interfere with the semantics under
     23 // test.
     24 try {
     25  (0,eval)('var x;');
     26 } catch (err) {
     27  caught = err;
     28 }
     29 
     30 assert.notSameValue(caught, undefined);
     31 assert.sameValue(caught.constructor, SyntaxError);
     32 
     33 reportCompare(0, 0);