test/js-perf-test/Modules/basic-export.js - v8/v8 - Git at Google

 // Copyright 2017 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 export let value = 0;
 for (let i = 0; i < iterations; ++i) ++value;
 if (value != iterations) throw value;
	// Copyright 2017 the V8 project authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	export let value = 0;
	for (let i = 0; i < iterations; ++i) ++value;
	if (value != iterations) throw value;