Scala definitely. I don't see why it's "better enough" to persist. Node? Not until or unless you can build a nice fast browser-side GUI in Go. A Go version of

Scala definitely. I don't see why it's "better enough" to persist. Node? Not until or unless you can build a nice fast browser-side GUI in Go. A Go version of GWT that integrated very well with the DOM and supported React-style UI elements would be interesting but nothing like that exists.