tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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instn-iee-bndng-const.js (2163B)

      1 // |reftest| module
      2 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 /*---
      5 description: >
      6    Imported binding reflects state of indirectly-exported `const` binding
      7 esid: sec-moduledeclarationinstantiation
      8 info: |
      9    [...]
     10    12. For each ImportEntry Record in in module.[[ImportEntries]], do
     11        a. Let importedModule be ? HostResolveImportedModule(module,
     12           in.[[ModuleRequest]]).
     13        b. If in.[[ImportName]] is "*", then
     14           [...]
     15        c. Else,
     16           i. Let resolution be ?
     17              importedModule.ResolveExport(in.[[ImportName]], « », « »).
     18           ii. If resolution is null or resolution is "ambiguous", throw a
     19               SyntaxError exception.
     20           iii. Call envRec.CreateImportBinding(in.[[LocalName]],
     21                resolution.[[Module]], resolution.[[BindingName]]).
     22    [...]
     23    16. Let lexDeclarations be the LexicallyScopedDeclarations of code.
     24    17. For each element d in lexDeclarations do
     25        a. For each element dn of the BoundNames of d do
     26           i, If IsConstantDeclaration of d is true, then
     27              1. Perform ! envRec.CreateImmutableBinding(dn, true).
     28           ii. Else,
     29               1. Perform ! envRec.CreateMutableBinding(dn, false).
     30           iii. If d is a GeneratorDeclaration production or a
     31                FunctionDeclaration production, then
     32                [...]
     33 
     34    8.1.1.5.5 CreateImportBinding
     35 
     36    [...]
     37    5. Create an immutable indirect binding in envRec for N that references M
     38       and N2 as its target binding and record that the binding is initialized.
     39    6. Return NormalCompletion(empty).
     40 flags: [module]
     41 ---*/
     42 
     43 assert.throws(ReferenceError, function() {
     44  typeof B;
     45 }, 'binding is created but not initialized');
     46 
     47 import { B, results } from './instn-iee-bndng-const_FIXTURE.js';
     48 export const A = null;
     49 
     50 assert.sameValue(results.length, 4);
     51 assert.sameValue(results[0], 'ReferenceError');
     52 assert.sameValue(results[1], 'undefined');
     53 assert.sameValue(results[2], 'ReferenceError');
     54 assert.sameValue(results[3], 'undefined');
     55 
     56 reportCompare(0, 0);