nodemon:expressjs app not starting clean exit - waiting for changes before restart

Question

I have generated express application with express-generator ,everything works fine until i deleted the node_modules folder.

after reinstall the node-modules nodemon is not starting the application.

[nodemon] starting node app.js [nodemon] clean exit - waiting for changes before restart

Here is the package.json file

{
  "name": "testapp",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www",
    "build": "node ./bin/www"
  },
  "dependencies": {
    "body-parser": "~1.18.2",
    "cookie-parser": "~1.4.3",
    "cors": "^2.8.4",
    "csurf": "^1.9.0",
    "debug": "~2.6.9",
    "express": "~4.15.5",
    "express-session": "^1.15.6",
    "jade": "~1.11.0",
    "morgan": "~1.9.0",
    "serve-favicon": "~2.4.5"
  },
  "main": "app.js",

}

Answer 1

This is not an issue of nodemon, this error occurs when the file you are running with nodemon is ended its execution(i.e. scripts that do not run continuously).

I have cloned your repo and working fine for me so you should be running nodemon app.js.

If you are generating app with express generator your app.js is not the file that listens to the server. Actually, bin/www file is the one that starts listening and the app only create server object.

So nodemon ./bin/www should do the trick for you.

you can also edit package.json and add following in the code

"scripts": {
    "start": "node ./bin/www",
    "dev": "nodemon ./bin/www"
}

And then run npm run dev.