We reached now the end of this chapter. However, we barely scratched the surface of TypeScript. Its huge potential goes way beyond the scope of this shallow introduction and there is definitely more of this which is worth being explored and analyzed in detail. Unfortunately, that is out of the scope of this book and such information is not even required to learn and understand Angular 2, although this knowledge will obviously expand the boundaries of your code practice. We would suggest you to check the following aspects of the language specification as a starting point:

If you want to delve deeper into TypeScript, I would recommend you read TypeScript Essentials by Christopher Nance, Learning TypeScript by Remo H. Jansen, or the more advanced Mastering TypeScript by Nathan Rozentals, all by Packt Publishing.