Async programming is a must for scalable server apps and snappy web apps running in the browser. JavaScript has long been known for its “callback hell” when it comes to async. However, times have changed. JavaScript has learned new tricks and with TypeScript you can add type safety. In this session, Rainer Stropek speaks about server- and client-side async programming using TypeScript. He starts with type-safe promises. Based on that, he demonstrates the use of async/await without loosing backwards compatibility to old ECMAScript versions. Finally, Rainer closes with samples for using type-safe RxJS with TypeScript and Angular.