instn-named-bndng-const.js (1914B)
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 `const` 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 [...] 32 33 8.1.1.5.5 CreateImportBinding 34 35 [...] 36 5. Create an immutable indirect binding in envRec for N that references M 37 and N2 as its target binding and record that the binding is initialized. 38 6. Return NormalCompletion(empty). 39 flags: [module] 40 ---*/ 41 42 assert.throws(ReferenceError, function() { 43 typeof y; 44 }, 'binding is created but not initialized'); 45 46 import { x as y } from './instn-named-bndng-const.js'; 47 export const x = 23; 48 49 reportCompare(0, 0);