You don't need all those tools. I'm a big fan of browserify and the budo development server.

  npm init
  npm install -g budo
  npm install --save-dev babelify babel-preset-es2015
  echo "console.log('hello world')" > index.js
  budo index.js --live -- -t [ babelify --presets [ es2015 ] ]

Add tape for some tests and you're done.