<!DOCTYPE html>
<html lang="en">
<head>
  <title>Document</title>
</head>
<body>
  <script>
  window.postMessage({
    require: typeof require,
    exports: typeof exports,
    windowRequire: typeof window.require,
    windowExports: typeof window.exports,
    windowPreload: typeof window.sandboxed_preload,
  })
  </script>
</body>
</html>