server.js

const express = require("express");
const bodyParser = require("body-parser");
const mongoose = require("mongoose");
const routes = require("./routes");
const app = express();
const PORT = process.env.PORT || 3001;

// Define middleware here
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
// Serve up static assets (usually on heroku)
if (process.env.NODE_ENV === "production") {
  app.use(express.static("client/build"));
}
// Add routes, both API and view
app.use(routes);

// Set mongoose to leverage built in JavaScript ES6 Promises
mongoose.Promise = Promise;

if (process.env.MONGODB_URI) {
	mongoose.connect(process.env.MONGODB_URI);	
} else {
	mongoose.connect('mongodb://localhost/nytreact') ;
}
var db = mongoose.connection;

db.on('error', function (error) {
	console.log('Mongoose Error: ', error);
});

db.once('open', function () {
	console.log('Mongoose connection successful.');
});

// Start the API server
app.listen(PORT, function() {
  console.log(`🌎  ==> API Server now listening on PORT ${PORT}!`);
});