<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<html>
  <head>
    <script>
      window.onclick = () => {
        Promise.resolve().then(() => {
          throw new Error("Second");
        });

        throw new Error("First");
      };
    </script>
  </head>
  <body></body>
</html>
