How is core.typed for ClojureScript now, is it suggested to use?

@jiyinyiyong: I don’t think it’s very usable right now, someone is working on it there is a thread on the mailing list https://groups.google.com/forum/#!topic/clojure-core-typed/2kM10kldxPI

@minimal: it sounds core.typed is not an offitial work and not going well