cljs.repl.node/create-socket

functionsince v1.10.217Edit
(create-socket host port)

Source code @ clojurescript:src/main/clojure/cljs/repl/node.clj
(defn create-socket [^String host port]
  (let [socket (Socket. host (int port))
        in     (io/reader socket)
        out    (io/writer socket)]
    {:socket socket :in in :out out}))