indow.postMessage('88');
          })();
        </script>
      </li>

      <li>
        <strong>set/get window.someWindowNumber</strong>
        <code>
          <span id="testSomeWindowNumber"></span>
        </code>
        <script type="text/partytown">
          (function () {
            const elm = document.getElementById('testSomeWindowNumber');
            window.someWindowNumber = 1885;
            elm.textContent = window.someWindowNumber;
          })();
        </script>
      </li>

      <l