If JVM isn't a blocker try Kotlin. It compiles faster than Scala and has a great IDE experience. Runtime performance is very good of course with the usual JVM c

If JVM isn't a blocker try Kotlin. It compiles faster than Scala and has a great IDE experience. Runtime performance is very good of course with the usual JVM caveats (high memory usage, need to use recent JDK for latency optimised GC if you need that).