The so called button element does not display

HTML Code

 <script src="https://unpkg.com/react@18/umd/react.development.js" crossorigin></script>  <script src="https://unpkg.com/react-dom@18/umd/react-dom.development.js" crossorigin></script>

  <div id="TestButtonContainer"></div>

  <script module="TestButton.js"></script>

Testbutton.js

const domContainer = document.querySelector('#TestButtonContainer');
const root = ReactDOM.createRoot(domContainer);
root.render(e(TestButton));