Very nice! I was following Notch during that LD and had no ideas of my own so I ported it on the fly to Ruby using JRuby. Performance was hideous compared to Java but it was a fun learning experience and I was surprised just how good JRuby was at working with all the same libraries as Java: https://github.com/peterc/potc-jruby

I imagine TypeScript was a bit more of a challenge as I could mostly translate line for line as JRuby is JVM-based and I could use all the same dependencies.