index.js

const express = require('express')
const app = express()
const path = require('path')
const port = process.env.PORT || 5000
const engine = require('consolidate');
const compression = require('compression');
// set up router
var router = express.Router();
router.use(express.urlencoded({ extended: true }));
router.use(express.json())
router.use((req, res, next) => { // router middleware
    res.header('Access-Control-Allow-Origin', process.env.ORIGIN || '*');
    next();
});
// REGISTER ALL ROUTES -------------------------------
// Compress all HTTP responses
app.use(compression());
app.use('/api', router); // all of the routes will be prefixed with /api

app.use(express.static(path.join(__dirname, 'public')))
	.set('views', path.join(__dirname, 'views'))
	.engine('html', engine.mustache)
	.set('view engine', 'html')
	.get('/', (req, res) => res.render('index.html'))
	.listen(port, () => {
		console.log(`Example app listening on port ${port}!`)
	});