> remember Coffeescript ?)
Yes I do. My team and I use it everyday and we are very happy. Because of the (Google/MS paid) hype, we have studied and considered Typescript (TS) and Dart but we found Coffeescript superior. I really wanted to like TS because of Angular 2, but it looks like a verbose Microsoft product. (Remember Visual Basic?)
Coffeescript continues to evolve, and Coffeescript 2 generates ES6. I found no reason to chose TS over Coffeescript's elegance, productivity and conciseness.