nodemon + express, listen port =?

you too use define your for nodemon:

$ nodemon --inspect ./bin/www 3000

This also works: Include this in your app.js (it does the same thing as the neolivz4ever said)

app.set('port', process.env.PORT || 3000);
var server = app.listen(app.get('port'), function() {
  console.log('Express server listening on port ' + server.address().port);
});

in package.json

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

the following would now be equivalent:

$ npm start
$ nodemon ./bin/www