test262/test/language/expressions/async-arrow-function/early-errors-arrow-formals-lineterminator.js

// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: prod-AsyncArrowHead
description: async arrows cannot have a line terminator between "async" and the formals
negative:
  phase: early
  type: SyntaxError
---*/

async
(foo) => { }