ESRI JSAPI with Webpack and React
It has the following setup:
Static js: for all the bundles, components, services, stores, etc css: for all css code u have using sass, images, fonts, etc.
gulpfile.js : for some automatic tasks
dist: css for ur production build js: for ur production build
Package.json: has some modules that maybe are unnecesary but i think they are really good to have for developing some form-apps.
npm install
npm run start
Specially thanks to : @lobsteropteryx and @tomwayson for all the help.