This will install among others:
ncp - cross platform copy (ncp [src] [dest]) rimraf - cross platform delete (rimraf [dir|file]) mkdirp - cross platform mkdir (mkdir -p [dir]) ...
You can edit your files, webpack will keep an eye on changes and refresh automatically as you save, so no need to reload the browser.
$ npm install
$ npm start
go to http://localhost:3000 in your browser.
Continue working normally. If you change your html, you might need to refresh manually, otherwise stop and run 'npm start' again.
npm run test
This lints your files, tests and outputs a minified bundle of all your js/css A precommit hook will stop the build if lint/test errors occur.
npm run build