nodemon
https://user-images.githubusercontent.com/13700/35731649-652807e8-080e-11e8-88fd-1b2f6d553b2d.png
nodemon reload, automatically.
nodemon is a tool that helps develop node.js based applications by automatically restarting the Node.js application when file changes in the directory are detected 類似
比較して、使いやすい方選ぶ
code:nodemon.sh
// 以下の拡張子が変わると再起動
nodemon -e js,json,graphql
参考