A simple HTTPS express server.

server.js

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

// import private key and public certificate
const privateKey  = fs.readFileSync( './thatisuday.key', 'utf8' );
const certificate = fs.readFileSync( './thatisuday.crt', 'utf8' );

// create an express app
const app = express();
app.get( '/', ( _req, res ) => {
    res.send( "Hello Secure World!" );
} );

// launch HTTPS server on port 443
const credentials = { key: privateKey, cert: certificate };
const httpsServer = https.createServer( credentials, app );
httpsServer.listen( 443 );