Personally I'm not a fan of node. Building async systems in non-type safe languages is a recipe for disaster. NPM was a terrible packaging system, even before the left-pad disaster. If I see a cool new project written in node and try to npm install it, there's a good 60% failure rate. It's gone down a bit; maybe 30% today, but still not great.
Even Akka (Scala) doesn't have type safety in is message passing actors. I'd like to see a good async actor/architecture with type safety.