I tried renaming public/index.js to public/index.tsx and get "./public/index.js - File not found" in the build watcher. Of course the index.html is still referencing the index.js file - what do I need to do?

Edit: It does work for e.g. pages/about/index.js to rename to index.tsx - so maybe it's just the main index that won't work as Typescript?

Also it looks like there is no default definition provided for imported CSS modules - the import resolves to a string so "styles.about" doesn't compile