As an ex-Actionscript, now-JS programmer a lot of this resonates with me. After the move, I missed a lot of things - mostly the productivity stuff like type-sa

As an ex-Actionscript, now-JS programmer a lot of this resonates with me. After the move, I missed a lot of things - mostly the productivity stuff like type-safe renaming; intellisense; clickable function names. Also the presence of a real module system, and the fact that the compiler would catch my typos. However, after comparing my two codebases (the original one in Actionscript and the new on in Javascript), I can't help but be amazed at all the damn boilerplate that's in my Actionscript. I ended up spending an enormous amount of time specifying interfaces and careful inheritance chains so that all of my type annotations would be compatible and safe. Did I need to do all that? Probably not, but the design of the language certainly encouraged me to do so. I can't help but wonder what I could have done with that time - especially considering the fact that my JS codebase doesn't seem to have more bugs or worse stability. Would I switch back if I could? I'm not sure. I can't help but think that there's a real opportunity for a Coffeescript-like language with a module system, clean class syntax, and some Go-like features such as Go interfaces and type inference, plus manual type annotations when necessary.