how to use https in express code example

Example: https with express

const fs = require('fs');
const https = require('https');

const app = require('express')();
app.get('*', (req, res) => res.send('<h1>Hello, World</h1>'));

const server = https.createServer({
  key: fs.readFileSync(`${__dirname}/localhost-key.pem`, 'utf8'),
  cert: fs.readFileSync(`${__dirname}/localhost.pem`, 'utf8')
}, app);

await server.listen(443);