Typescript mapped types

Typescript mapped types are a powerfull advanced feature within typescript. In this video I also explain how to use the 'as' keyword with mapped types, this feature is available in typescript since 4.1. Use mapped types with conditional typing and template literal types.

One of the more important software programming skills is the DRY principle, don't repeat yourself. With mapped types you can help yourself with not repeating yourself. See how to do that in the following video.