Mastering TypeScript - Fourth Edition

2

Exploring the Type System

Thus far, we have covered the basic principles of using types in TypeScript. We already know how to define a type for a variable or a function argument, and some of the rules that the compiler uses in order to ensure strongly typed code. We have discussed some of the basic, or primitive, types (number, string, and boolean), as well as the array type. However, we have only just skimmed the surface of the TypeScript type system.

In this chapter, we will explore all of the primitive types that are available, as well as some language elements that we can use to better describe how to use these types. We will discuss when and where to use these types and language elements, and even when not to use some types.

This chapter ...