import { useRef } from 'react' import ReactDOM from 'react-dom'; import ReactEpubViewer from 'modules/reactViewer/ReactViewer' import { ViewerRef } from 'types' const App = () => { const EPUB_URL = "/react-epub-viewer/files/Alices Adventures in Wonderland.epub"; const ref = useRef(null); return ( ); } ReactDOM.render(, document.getElementById('root'));