test262/test/language/module-code/early-dup-lex.js

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 10.2.1
description: >
It is a Syntax Error if the LexicallyDeclaredNames of ModuleItemList
contains any duplicate entries.
flags: [module]
features: [let, const]
negative:
phase: parse
type: SyntaxError
---*/
failIfCodeGetsEvaluated();
let x;
const x;