This handbook will teach you the basics of TypeScript, including what it is, why it is useful, and the key features it offers.

TypeScript was created by Anders Hejlsberg, a prominent software engineer at Microsoft who’s also known for his work on C# and Delphi. TypeScript was designed to enhance JavaScript by adding static types, making it easier to build and maintain large-scale applications.

We’ll start by using Vite to integrate TypeScript with a React project. Then you’ll learn about key concepts like type annotations, type inference, and how to handle objects and arrays.

After that, we’ll explore advanced topics such as union and any types, readonly properties, functions with specific parameter and return types, generics for flexible and reusable code, and the distinctive roles of type aliases and interfaces.

I’ll provide detailed examples and explanations throughout the handbook to give you a comprehensive understanding of how TypeScript's features can improve JavaScript development.