[edko]

ClojureScript has some very powerful tools available (figwheel, om/next), and the community is working on resolving many of the issues mentioned in the article. Derek Slager's presentation "ClosureScript for Skeptics" is really good and covers many of these topics (https://www.youtube.com/watch?v=gsffg5xxFQI).

Myself, I prefer ScalaJS because I already know Scala, the tooling is excellent, it is fast, and the resulting JS is of reasonable size.

Fortunately, it is not an either/or decision. Both compile to JS and can interoperate without too much effort.