Per http://clojure.github.io/clojure/clojure.core-api.html#clojure.core/rseq, Clojure returns nil for (rseq []). ClojureScript should do the same.
nil
(rseq [])
fixed, http://github.com/clojure/clojurescript/commit/3da27a0aff346ac1528ebf79aebf2329e96d34c9
Per http://clojure.github.io/clojure/clojure.core-api.html#clojure.core/rseq, Clojure returns
nil
for(rseq [])
. ClojureScript should do the same.