Here's another thing: if you want to grow from this exact setup, use deno. It has support for import maps and don't require a bundler or a separate compilation step for typescript

https://deno.land/manual@v1.30.3/basics/import_maps

Maybe add aleph too (which is similar to nextjs)

https://alephjs.org/

Deno won't require nearly as much tooling as nodejs, but it still has tooling for the cases you need it.