         elm.textContent = true;
              elm.classList.add('testRaf');
            });
          })();
        </script>
      </li>

      <li>
        <strong>window.requestAnimationFrame()</strong>
        <code id="testWindowRaf"></code>
        <script type="text/partytown">
          (function () {
            window.requestAnimationFrame(() => {
              const elm = document.getElementById('testWindowRaf');
              elm.textContent = true;
              elm.classList.add('testWindowRa