In your position I'd probably do the same thing and no doubt the ESM/commonJS mess is a mess and huge PITA. All that said I'll probably continue with my TypeSc

In your position I'd probably do the same thing and no doubt the ESM/commonJS mess is a mess and huge PITA. All that said I'll probably continue with my TypeScript/NodeJS backends since I just absolutely love writing TypeScript and I love sharing code between the front and backend. I use JS/TS in my day job (frontend only) as well so it's super nice to be able to benefit from that knowledge/practice. I also use TypeScript to write a few apps (some for work, some for my side project, some for personal use) so staying in the TypeScript ecosystem for almost everything I do is really nice. Again, I'm not defending that annoying/bad parts of TS and certainly not saying I've escaped the ESM/commonJS hell unscathed, just that I use TS everywhere and I generally have a lot of fun writing/running it.