run in dev

• npm run build:watch - runs babel to transpile the server from es6 to es5 (watch mode)
• npm run build:watch:client - runs webpack to build bundle (watch mode)
• npm run start:nodemon - runs nodemon at watch mode

prod

• npm run build - runs babel to transpile the server from es6 to es5
• npm run build:client - runs webpack to build bundle
• npm run build:prod - builds both client and server
• npm run start - it calls build:prod and then runs the app