server.js

const { createServer } = require('http');
const express = require('express');
const compression = require('compression');
const morgan = require('morgan');
const path = require('path');

const normalizePort = port => parseInt(port, 10);
const PORT = normalizePort(process.env.PORT || 5000);

const app = express();
const dev = app.get('env') !== 'production';

if (! dev) {
    app.disable('x-powered-by');
    app.use(compression());
    app.use(morgan('common'));

    app.use(function forceLiveDomain(req, res, next) {
        // Don't allow user to hit Heroku now that we have a domain
        const host = req.get('Host');
        if (host === 'bp-reactjs-portfolio.herokuapp.com') {
            return res.redirect(301, 'https://bobbypatterson.me' + req.originalUrl);
        }
        return next();
    });

    app.use(express.static(path.resolve(__dirname, 'build'), {maxAge: '30d'}));

    app.get('*', (req, res) => {
        res.sendFile(path.resolve(__dirname, 'build', 'index.html'));
    });
}

if (dev) {
    app.use(morgan('dev'));
}

const server = createServer(app);

server.listen(PORT, err => {
    if (err) throw err;

    console.log("Server started");
});