hello.cljs

(ns hello
  (:require [cljs.nodejs :as nodejs]
            [foo :as foo]))

;;(def foo (.-foo (nodejs/require "./foo")))

(defn ^:export greet [n]
  ;;(str "Hello, " (.title foo n)))
  (str "Hello, " (foo/title n)))


;; ------- foo.cljs -------
;; foo.cljs is in the same directory as hello.cljs

(ns foo)

(defn ^:export title [n]
  (str "Mr. " n))

simply needed to push process.cwd() onto the classpath from the nodejs side of things...