There was a post last week about the best programming language for LLMs, and in the comments people loved Go, with the claim being it's very opinionated and there's really only one way of doing things. I'd say the same is mostly true for Rails apps as well.

However having worked with Typescript for 8 years now... I'm not sure I could go back to Ruby without types. For LLMs thats important as well, the more guard rails you can give them the better. What's the state of type checkers today?

TS is very AI native to the point i'd agree it's near magical in terms of contract.

However, the fact its still the js ecosystem with react, thing is even though it's super productive in churning out the code, there's too many possible ways to do something. it's unwieldy.

For example Claude is obsessed with making react context providers. it'll make tons of them to power every feature. and your app will happily hold 20 layers of russian doll'd state in memory with no way to link to anything.

you have to tell it, no don't do that. i need you to power this thing through the router, through the url. and that has to be designed cohesively. and that's very different from the context free-for-all.

Ruby has types with RBS and Steep now. It's a lot like using .d.ts sidecar files alongside JavaScript, via jsconfig.json configuring tsc. I like it a lot!

Personally I love rust for agents because of types. In the ruby world there's sorbet and rbs so would be interesting to try that.