lein cljsbuild

We recommend using lein-cljsbuild over using the ClojureScript compiler directly.

If you'd like to work against ClojureScript master, make a checkouts directory in your project and clone the ClojureScript repository into it. Then modify your project.clj to look something like this:

(defproject foo "0.0.0" 
  :description "Foobar"
  :extra-classpath-dirs ["checkouts/clojurescript/src/clj"
                         "checkouts/clojurescript/src/cljs"]
  :dev-dependencies [[lein-cljsbuild "0.1.10"]]
  :cljsbuild {:builds {:release {:source-path "src"
                                 :compiler {:optimizations :advanced
                                            :output-to "main.js"}}}})