ReasonML is also a strong contender. Facebook's Messenger website is written in ReasonML [0] and compiling ReasonML for server work is pretty good. You can share a lot between the two codebases. People even write desktop applications using it, checkout Revery [1]. The applications that it produces are so fast, they are a delight to use. It's also very compatible with OCaml so you can get advantages from that ecosystem as well.
[0] https://twitter.com/jordwalke/status/1177373197517221888?s=2... [1] https://github.com/revery-ui/revery