You'll need a Java Runtime (brew install java).
Make a symlink to commun (https://github.com/beingmrkenny.co.uk/commun) (ln -s ../commun).
npm run css
npm run js
npm run html
npm run serve - create the serve directory (ready to release, or to run locally)
npm run watch - runs serve, then watches all source files and compiles as necessary
If you want to run it from a petite server, make sure http-serve is installed (npm i -g http-server), then run http-server ./serve/ from the root dir of the repo. Make sure you've run serve, or are watching the files.