| // Copyright (C) 2015 the V8 project authors. All rights reserved. | |
| // This code is governed by the BSD license found in the LICENSE file. | |
| /*--- | |
| es6id: 15.2.1.1 | |
| description: > | |
| It is a Syntax Error if the ExportedNames of ModuleItemList contains any | |
| duplicate entries. | |
| flags: [module] | |
| negative: | |
| phase: parse | |
| type: SyntaxError | |
| ---*/ | |
| $DONOTEVALUATE(); | |
| export default var x = null; | |
| export default var x = null; |