test262/test/language/module-code/early-dup-top-function.js

// Copyright 2021 Chengzhong Wu. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-module-semantics-static-semantics-early-errors
description: >
    It is a Syntax Error if the LexicallyDeclaredNames of ModuleItemList
    contains any duplicate entries.
    At the top level of a Module, function declarations are treated like
    lexical declarations rather than like var declarations.
flags: [module]
negative:
  phase: parse
  type: SyntaxError
---*/

$DONOTEVALUATE();

function x() {}
function x() {}