src/client/dialog-demo-mui/index.html

<!DOCTYPE html>
<html>
  <head>
    <base target="_top" />
    <!-- Add any external scripts and stylesheets here -->
    <script
      crossorigin
      src="https://unpkg.com/react@18.2.0/umd/react.production.min.js"
    ></script>
    <script
      crossorigin
      src="https://unpkg.com/react-dom@18.2.0/umd/react-dom.production.min.js"
    ></script>
    <script
      crossorigin
      src="https://unpkg.com/@mui/material@5.11.11/umd/material-ui.production.min.js"
    ></script>
    <script
      crossorigin
      src="https://unpkg.com/gas-client@1.2.1/dist/index.js"
    ></script>
    <script
      crossorigin
      src="https://unpkg.com/@types/react@18.2.66/index.d.ts"
    ></script>
  </head>
  <body>
    <section id="index">
      <script type="module" src="./index.jsx"></script>
      <!-- bundled js and css will get inlined here during build-->
    </section>
  </body>
</html>