Fable.Remoting – Automated, stateless, typechecked JSON APIs in F#

WebSharper does also something similar -> https://developers.websharper.com/docs/v4.x/fs/remoting

Are there similar ideas/libraries implemented in JS/TS as well?

I am quite drawn by these ideas, as they remove some overhead in making a fronted+backed application and somewhat bridge the productivity gap between a SSR solution such as Django or Rails, and a traditional server API + front end by allowing a fully integrated development and automatic but safe API generation