References https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/Introduction https://www.mongodb.com/compatibility/using-typescript-with-mongodb-tutorial https://medium.com/swlh/typescript-with-mongoose-and-node-express-24073d51d2ee https://chat.openai.com/ https://jwt.io/introduction https://developer.okta.com/blog/2018/09/13/build-and-understand-express-middleware-through-examples https://javascript.plainenglish.io/getting-started-with-express-validator-fae0bbeeb0f9