I too used to do this, until I needed more complex things, or am trying to find a bug in my code and have to make a few small edits, save, run `npm run build` then refresh my browser, make changes, repeat step 40 times in a 15 minute timespan.

Or I can create a couple gulp tasks (which honestly, is easy as heck) then a watcher using livereload, and run `gulp watch` then just be done with it.