The TypeScript compiler and language has brought JavaScript development up to the enterprise level, yet still maintains backward compatibility with existing JavaScript browsers and libraries.Packed with practical code samples, this book brings the benefits of strongly typed, object-oriented programming and design principles into the JavaScript development space. Starting with core language features, and working through more advanced topics such as generics and modules, you will learn how to gain maximum benefit from your JavaScript development with TypeScript. With a strong focus on test-driven development and coverage of many popular JavaScript frameworks, you can fast-track your TypeScript knowledge to a professional level. By the end of this book, you will be able to confidently implement a TypeScript application from scratch.