server.js

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

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(express.static(path.resolve(__dirname, 'build')));

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

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

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

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

    console.log(`Server running on port ${PORT}`)
})