server.js

require('dotenv').config();

const https = require('https');
const path = require('path');
const fs = require('fs');
const Express = require('express');

const app = new Express();
app.get('/', (req, res) => res.send('Hello World!!'));

const options = {
  key: fs.readFileSync(path.join(__dirname, 'localhost-key.pem')),
  cert: fs.readFileSync(path.join(__dirname, 'localhost.pem'))
};
server = https.createServer(options, app);
server.listen(process.env.PORT || 443);