[spyder81]

I've put a lot of work into a compile-to-JS evaluation for my day job. It's not suitable for public consumption, but of our top 5 choices:

- both Kotlin and ClojureScript don't compile code written in their "native" language (java) to JavaScript, limiting the ability to leverage existing libraries. - ScalaJS is still experimental. - Haskell looked promising, I asked a haskell programmer to run that evaluation for me, but fay/haste aren't complete enough for serious (non-ui) JavaScript work and GHCJS generates 5mb JS files. - OCaml had a viable project in about half the time I estimated it would take.

And on a personal note, Scala seemed great at first but after SML/OCaml I find the number of times that I have to tell the type checker what I'm doing immensely frustrating :)

[lmm]

Did you examine Ceylon? It seems to avoid the problem you describe with Kotlin and ClojureScript by explicitly abandoning the Java native library.

[spyder81]

I haven't, no. We excluded the vast majority of AltJS languages as the size of community and availability of third-party libraries was a significant factor in the evaluation.