That's a basic "Snake" game written in ClojureScript. To run install
Leiningen and then run
It will tell you to open
http://localhost:3449/ in the browser. Do that.
src/snake/core.cljs when figwheel is running and observe it being
immediately executed by browser (immediate means it takes 0.1-0.3s to compile
and then loads new code in your browser without changing state). Source maps are
enabled so you're all set.
There is also advanced compilation configured, so you can do
make www and it
will put optimized version inside of
www directory (be patient, it can take
half a minute depending on your machine).
There is also an article describing whole setup.