[jre]

I like this idea very much. Shameless plug and I don't want to be the Rust fanboy, but I've played with something similar in Rust:

https://github.com/julienr/liveboard-rs

Basically it uses actix for the backend and yew (Vue-like rust frontend framework) for the frontend. This enables one to share types (and helper functions) between both, which is great:

https://github.com/julienr/liveboard-rs/blob/master/shared/s...

That being said, I think maturity-wise, Typescript is probably a better bet for this right now, so I'll definitely look at trpc for $dayjob.