If everybody agreed that most other languages are much better and more productive than javascript then we should have had one of them in the browsers already. A

If everybody agreed that most other languages are much better and more productive than javascript then we should have had one of them in the browsers already. And if the problem is just social/organizational then we might never get anything better than javascript, in which case Flow is awesome. I think Dart seems to be a great language and IE, Firefox and Safari should have implemented it years ago, but they didn't. Now I think TypeScript is a great addition to javascript and I hope they build it into the browsers but I suppose they won't (maybe EcmaScript 7 will have some parts of TypeScript in it, or parts from AtScript from Google). By the way, you probably still want minification and concateneted files when you create js from other languages. That stops me from using them, I would have many levels of tools between my source code and the production code.