It’s hard to justify using anything other than JS or if you wanna be fancy, Web Assbly, for the FE.
Any other front end language involves generating Javascript from your language, which inevitably ends up with you making a weird Frankenstein project that mixes the two.
I’d rather just use stuff like Webpack or Vite to compile my JS front-end out of JS (or TS) from the start. It always ends up being a cleaner result.
My backend though can be whatever the fuck I want it to be.
But if you ever think dynamically compiling/transpiling a JS front end on the fly on demand is a good idea, instead of simply just delivering static pre-compiled/transpiled pages, you’re part of the problem for why the web is so slow and bloated.
It’s wild how crazy of projects people will build that take 3 entire seconds to just deliver a 500kb static form that doesn’t even need angular to do anything. They turn a couple hundred kb into several mb for no useful reason, it’s wild.
To my understanding, you can’t really use WebAssembly for the frontend - it doesn’t support manipulating the DOM, so you still need to offload a lot of the work to JS. It’s an uncontested language when it comes to web frontend.