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Assert that ImportDeclaration and ExportDeclaration match only the ModuleItem symbol. According to the definition of HostResolveImportedModule, it is acceptable for an implementation to throw a SyntaxError in the event that a requested module can neither be found nor created: > If a Module Record corresponding to the pair referencingModule, > specifier does not exist or cannot be created, an exception must be > thrown. In order to reliably detect a SyntaxError in response to the correct interpretation of the grammar (and not a SyntaxError from an *incorrect* interpretation of the grammar followed by a failure to resolve the requested module), the ModuleSpecifier of ExportDeclarations should describe a valid resource.
11 lines
300 B
JavaScript
11 lines
300 B
JavaScript
// 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: Expression cannot contain an `export` declaration
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id: sec-modules
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negative: SyntaxError
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flags: [module]
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---*/
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() => { export default null; };
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