server.js

const express = require('express');
const bodyParser = require('body-parser');
const cors = require('cors');
const morgan = require('morgan');
const app = express();
module.exports = app;

/* Do not change the following line! It is required for testing and allowing
*  the frontend application to interact as planned with the api server
*/
const PORT = process.env.PORT || 4001;

app.use(morgan('tiny'));

// Add middleware for handling CORS requests from index.html
app.use(cors());

// Add middware for parsing request bodies here:
app.use(bodyParser.json());

// Mount your existing apiRouter below at the '/api' path.
const apiRouter = require('./server/api');
app.use('/api', apiRouter);

// This conditional is here for testing purposes:
if (!module.parent) { 
  // Add your code to start the server listening at PORT below:
  app.listen(PORT, () => {
    console.log(`Server listening on port ${PORT}`);
  });
}