Does this have Clojure's persistent data structures? The docs say it has immutable data structures, which isn't exactly the same thing. (Edit: added the second sentence)
Those persistent data structures are implemented in Clojure aren't they? It's not a feature of the compiler I believe. So if it can run Clojure code then that code can be the persistent data structures library if you want.
They are a feature of the compiler - Clojure's are implemented in Java.
And Clojurescript's are implemented in Clojurescript!