Currently doesn't work.
lumo -c src/ scripts/build.cljs
wget https://github.com/clojure/clojurescript/releases/download/r1.9.671/cljs.jar
java -cp cljs.jar:src clojure.main scripts/build.clj
$ lumo main.js
Hello, world!
00042
$ node main.js
Hello, world!
00042