- You can put the babel configuration in your package.json.<p>- babel by itself doesn&#x27;t actually do anything. It depends on the preset you chose. There are now a bunch of presets that leave parts of ES6 alone (i. e. to use ES6 import with webpack).<p>- I have actually never looked at the docs :). Never had a problem with it (unlike the package manager from config file hell, i.e. webpack).