There are competitors with just as much momentum and community, if not more.
Kotlin is now the official language of Android, and is being very rapidly picked up all across the Java ecosystem. Oh but it also compiles to JavaScript and LLVM native binaries if you don't want the JVM.
The syntax and ergonomics of Kotlin are great. Really nice language. The compiler is also very fast, just as fast as Go's I believe. It does incremental compilation and all the mod cons.
Kotlin is now the official language of Android, and is being very rapidly picked up all across the Java ecosystem. Oh but it also compiles to JavaScript and LLVM native binaries if you don't want the JVM.
The syntax and ergonomics of Kotlin are great. Really nice language. The compiler is also very fast, just as fast as Go's I believe. It does incremental compilation and all the mod cons.