How to write production ready Node.js Rest API - Typescript version

app.ts

import * as express from 'express';
import * as bodyParser from 'body-parser';

class App {

    public express: express.Application;

    constructor() {
        this.express = express();
        this.middleware();
        this.routes();
    }

    // Configure Express middleware.
    private middleware(): void {
        this.express.use(bodyParser.json());
        this.express.use(bodyParser.urlencoded({ extended: false }));
    }

    private routes(): void {
        
        this.express.use('/', (req,res,next) => {
            res.send("Typescript App works!!!");
        });
    }
}

export default new App().express;

index.ts

import App from './app';

const port = 3070;

  App.set('port', port);
  const server = http.createServer(App);
  server.listen(port);
  
server.on('listening', function(): void {
    let addr = server.address();
    let bind = (typeof addr === 'string') ? `pipe ${addr}` : `port ${addr.port}`;
    console.log(`Listening on ${bind}`);
 });

module.exports = App;