test/e2e/resources/sources/redundant-worker-sourcemap.html

<title>Spawn same source-mapped script in workers and page</title>
<script>
  const workers = [];
  for (let i = 0; i < 10; ++i) {
    workers.push(new Worker('multi-workers.min.js'));
  }
</script>
<script src="multi-workers.min.js"></script>