[fliggertiggy]

I've had good luck with sveltekit (a framework for js sites). They'll break something with a new version but provide you with very helpful compile errors pointing to a migration script to re-write any old code.

C# has been pretty good as well.

But at some point you're going to need data for your app and that's where you'll get surprised. That Yahoo currency data you used to get for free or Wikipedia's mobile API? Gone ten years later.

[zx8080]

C# with AWS lambda can easily become a trap. Once a dotnet version comes EoL on lambda, good luck with a DB schema (specifically, EF).

[neonsunset]

What? You can just update EF Core without ever having to do a migration of the schema. It just works. Also, the versions that are EoL today are a really poor choice for Lambda anyway because you really do want to be using Native AOT + Dapper AOT with it instead.