tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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instn-named-bndng-fun.js (2249B)

      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: Imported binding reflects state of exported function binding
      6 esid: sec-moduledeclarationinstantiation
      7 info: |
      8    [...]
      9    12. For each ImportEntry Record in in module.[[ImportEntries]], do
     10        a. Let importedModule be ? HostResolveImportedModule(module,
     11           in.[[ModuleRequest]]).
     12        b. If in.[[ImportName]] is "*", then
     13           [...]
     14        c. Else,
     15           i. Let resolution be ?
     16              importedModule.ResolveExport(in.[[ImportName]], « », « »).
     17           ii. If resolution is null or resolution is "ambiguous", throw a
     18               SyntaxError exception.
     19           iii. Call envRec.CreateImportBinding(in.[[LocalName]],
     20                resolution.[[Module]], resolution.[[BindingName]]).
     21    [...]
     22    16. Let lexDeclarations be the LexicallyScopedDeclarations of code.
     23    17. For each element d in lexDeclarations do
     24        a. For each element dn of the BoundNames of d do
     25           i, If IsConstantDeclaration of d is true, then
     26              1. Perform ! envRec.CreateImmutableBinding(dn, true).
     27           ii. Else,
     28               1. Perform ! envRec.CreateMutableBinding(dn, false).
     29           iii. If d is a GeneratorDeclaration production or a
     30                FunctionDeclaration production, then
     31                1. Let fo be the result of performing InstantiateFunctionObject
     32                   for d with argument env.
     33                2. Call envRec.InitializeBinding(dn, fo).
     34    [...]
     35 
     36    8.1.1.5.5 CreateImportBinding
     37 
     38    [...]
     39    5. Create an immutable indirect binding in envRec for N that references M
     40       and N2 as its target binding and record that the binding is initialized.
     41    6. Return NormalCompletion(empty).
     42 flags: [module]
     43 ---*/
     44 
     45 assert.sameValue(
     46  f2(),
     47  23,
     48  'binding is initialized to function value prior to module evaluation'
     49 );
     50 
     51 assert.throws(TypeError, function() {
     52  f2 = null;
     53 }, 'binding rejects assignment');
     54 
     55 assert.sameValue(f2(), 23, 'binding value is immutable');
     56 
     57 import { f as f2 } from './instn-named-bndng-fun.js';
     58 export function f() { return 23; }
     59 
     60 reportCompare(0, 0);