dow.__NOT_STANDARD_PROP = true;
          })();
        </script>
        <script type="text/partytown">
          (function () {
            const elm = document.getElementById('testNotStandard');
            elm.textContent = String(window.__NOT_STANDARD_PROP);
          })();
        </script>
      </li>

      <li>
        <strong>avoid window[0]</strong>
        <code>
          <span id="testWindowIndex"></span>
        </code>
        <script>
          (function () {
            window[0] = true;
 