Summary

It was a long read, but this introduction to TypeScript was necessary to understand the logic behind many of the most brilliant parts of Angular. It gave us the chance to introduce the language syntax and explain the rationale behind its success as the syntax of choice for building the Angular framework.

We reviewed the type architecture and how we can create advanced business logic when designing functions with various alternatives for parameterized signatures. We even discovered how to bypass scope-related issues using the powerful arrow functions. We enhanced our knowledge of TypeScript by exploring some of the most common features used in Angular applications.

Probably the most relevant part of this chapter encompassed our overview of classes, methods, properties, and accessors and how we can handle inheritance and better application design through interfaces. Modules and decorators were some other significant features we explored in this chapter. As we will see very soon, having sound knowledge of these mechanisms is paramount to understanding how dependency injection works in Angular.

With all this knowledge at our disposal, we can start learning how to apply it by building Angular applications. In the next chapter, we will learn how to use Angular modules, which are not the same as JavaScript modules, to structure an Angular application. We will see in detail what Angular modules are and how we can use them to organize an Angular application in an efficient and properly structured way.