Airstream VS tyrian

I recommend you read the section for each of those in the readme here https://github.com/raquo/Airstream

Don't know of any other native (to Scala) solution to state management other than Airstream

You can see one example in https://github.com/raquo/Airstream/pull/60, you'll need to copy the PR code into your own project though (it doesn't touch Airstream internals so it's easy). If you search Laminar gitter room for "websocket" you'll find other third party websocket implementations too (not sure about specific examples)

If you want to try TEA, but not Elm I reccomend Scala.js with Tyrian[1]. Scala.js is a wonderful, mature project and Tyrian gives you the elm architecture in a very pragmatic way.

[1]: https://tyrian.indigoengine.io/

Have you looked at Laminar and Tyrian? Especially Tyrian seems to be close to what you're looking for.

What I wrote is obviously based on my experience as backend and data engineer. I'm so happy to see an adoption on the Frontend side (with things like Tyrian or OutWatch) and would be even happier if there was a clean path to Android. Out of curiosity, what do you find appealing in Scala, compared to e.g. Kotlin?

Documentation can be found at https://indigoengine.io/ and https://tyrian.indigoengine.io/.

Yes, I have. It didn't work out. There are quite neat libs like Tyrian, but they lack any ecosystem and I struggled to integrate it with pure JS libs - yet our app has a lot of very common components/widgets that we're really hesitating to write ourselves.