This is for basic express server configuration for API

server.js

const express    = require('require');
const app        = express();
const bodyParser = require('body-parser');
const morgan     = require('morgan');
const port       = process.env.PORT || 8080;

app.use(bodyParser.urlencoded({extended:false}));
app.use(bodyParser.json());
app.use(morgan('dev'));

app.get('/', function(req, res) {
    res.send('Hello! The API is at http://localhost:' + port + '/api');
});


app.listen(port,function(){
  console.log('Server running at http://localhost:'+port);
})