Node.js Hello World in CLJS

hello.cljs

$ npm install -g clojurescript
$ npm install express
$ cat node_modules/hello.cljs
(ns hello)

(def express (js/require "express"))
(def app (express))

(.get app "/" (fn [req res] (.send res "Hello World!")))
(.listen app 3000 #(console.log "Example app listening on port 3000!"))
$ cljs
cljs.user=> (require 'hello)
nil

cljs.user=> Example app listening on port 3000!