$ npm i -g @teppeis/clutz
$ clutz foo.js bar.js
$ gents foo.js bar.js

$ npx @teppeis/clutz foo.js bar.js
$ npx -p @teppeis/clutz gents foo.js bar.js

$ git clone git@github.com:teppeis/clutz-npm.git
$ cd clutz-npm
$ git submodule update --init
$ npm install
$ npm run build     # make clutz-all.jar with gradle wrapper
$ npm test