El llamado elemento de botón no se muestra

código HTML

 <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));