server.js

const express = require('express');
const path = require('path');

const port = process.env.PORT || 8080;
const app = express();

app.use(express.static(__dirname));

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

app.listen(port, () => {
 console.log(`App is running on port ${port}`);
});