TypeScript is becoming more and more popular. Having compile-time types can prevent all sorts of bugs that in vanilla JavaScript require a lot of diligence on the developer to ensure functions are called with the correct data. However, I tend to see a lot of TypeScript code written as if it's JavaScript with some types sprinkled around where it's convenient and 'any' or 'unknown' where it is inconvenient. TypeScript has a lot to offer the JavaScript developer and really improve the quality of code we write. In this talk we will take a look at some of the more advanced things TypeScript can offer us and how these concepts can enable us to write better, more concise declarative code.