mirror of https://github.com/tc39/test262.git
59 lines
2.2 KiB
JavaScript
59 lines
2.2 KiB
JavaScript
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// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: >
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Imported binding reflects state of exported generator function binding
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esid: sec-moduledeclarationinstantiation
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info: |
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[...]
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12. For each ImportEntry Record in in module.[[ImportEntries]], do
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a. Let importedModule be ? HostResolveImportedModule(module,
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in.[[ModuleRequest]]).
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b. If in.[[ImportName]] is "*", then
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[...]
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c. Else,
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i. Let resolution be ?
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importedModule.ResolveExport(in.[[ImportName]], « », « »).
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ii. If resolution is null or resolution is "ambiguous", throw a
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SyntaxError exception.
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iii. Call envRec.CreateImportBinding(in.[[LocalName]],
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resolution.[[Module]], resolution.[[BindingName]]).
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[...]
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16. Let lexDeclarations be the LexicallyScopedDeclarations of code.
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17. For each element d in lexDeclarations do
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a. For each element dn of the BoundNames of d do
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i, If IsConstantDeclaration of d is true, then
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1. Perform ! envRec.CreateImmutableBinding(dn, true).
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ii. Else,
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1. Perform ! envRec.CreateMutableBinding(dn, false).
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iii. If d is a GeneratorDeclaration production or a
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FunctionDeclaration production, then
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1. Let fo be the result of performing InstantiateFunctionObject
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for d with argument env.
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2. Call envRec.InitializeBinding(dn, fo).
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[...]
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8.1.1.5.5 CreateImportBinding
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[...]
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5. Create an immutable indirect binding in envRec for N that references M
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and N2 as its target binding and record that the binding is initialized.
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6. Return NormalCompletion(empty).
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flags: [module]
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---*/
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assert.sameValue(
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g2().next().value,
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23,
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'binding is initialized to function value prior to module evaluation'
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);
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assert.throws(TypeError, function() {
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g2 = null;
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}, 'binding rejects assignment');
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assert.sameValue(g2().next().value, 23, 'binding value is immutable');
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import { g as g2 } from './instn-named-bndng-gen.js';
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export function* g() { return 23; }
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