Express JS with TypeScript - Setup, Examples, Testing

*DISCLAIMER* This is NOT a full in depth tutorial on Express JS. It is only designed to walk you through the setup process of installing TypeScript, getting it up and running with Express, and show you examples of type annotating arguments. I have also added other examples with Unit Testing & Integration testing with Jest and ts-jest. I highly recommend you use this as a way to learn how to setup a TypeScript project for Express, and then slowly migrate over your code. Many of the concepts covered in my Express JS Full Course can easily be translated over once you get the idea of what to type annotate. Link to Express JS 8 Hour Course: https://www.youtube.com/watch?v=nH9E25nkk3I Code Repository: https://github.com/stuyy/express-typescript-example Support the Channel: Become a Member: https://www.youtube.com/ansonthedeveloper/join Become a Patreon: http://patreon.com/stuyy Buy me a Coffee: http://ko-fi.com/anson Donate on Streamlabs: https://streamlabs.com/ansondevacademy/tip Donate on PayPal: https://paypal.me/ansonfoong Connect with me: Twitter: https://twitter.com/ansonthedev Discord: https://discord.gg/Gd5fAEJDQD GitHub: http://github.com/stuyy Twitch: http://twitch.tv/stuy 0:00 - Project Setup 3:00 - Install Typescript 8:40 - tsconfig.json file 9:44 - Configuring TypeScript 13:00 - Compile TS Files 16:30 - Nodemon with Typescript 20:27 - Basic Type Annotations 35:08 - Type annotate Request Body 41:22 - Type annotate Query Parameters 43:41 - Type annotate Route Parameters 44:38 - Type annotate Response Body 51:06 - Extend Request Interface 54:50 - 3rd Party Libraries with TS 59:45 - Unit Tests with Jest and TS 1:08:25 - Integration Tests with Supertest 1:20:45 - Integration Tests