Book Image

Mastering TypeScript 3 - Third Edition

By : Nathan Rozentals
Book Image

Mastering TypeScript 3 - Third Edition

By: Nathan Rozentals

Overview of this book

TypeScript is both a language and a set of tools to generate JavaScript. It was designed by Anders Hejlsberg at Microsoft to help developers write enterprise-scale JavaScript. Starting with an introduction to the TypeScript language, before moving on to basic concepts, each section builds on previous knowledge in an incremental and easy-to-understand way. Advanced and powerful language features are all covered, including asynchronous programming techniques, decorators, and generics. This book explores many modern JavaScript and TypeScript frameworks side by side in order for the reader to learn their respective strengths and weaknesses. It will also thoroughly explore unit and integration testing for each framework. Best-of-breed applications utilize well-known design patterns in order to be scalable, maintainable, and testable. This book explores some of these object-oriented techniques and patterns, and shows real-world implementations. By the end of the book, you will have built a comprehensive, end-to-end web application to show how TypeScript language features, design patterns, and industry best practices can be brought together in a real-world scenario.
Table of Contents (16 chapters)
Free Chapter
TypeScript Tools and Framework Options

Third-Party Libraries

Our TypeScript development environment would not amount to much if we were not able to reuse the myriad of existing JavaScript libraries, frameworks, and general goodness that makes JavaScript development so popular today. As we have seen, however, in order to use a particular third-party library with TypeScript, we will first need a matching definition file.

Soon after TypeScript was released, Boris Yankov set up a GitHub repository to house TypeScript definition files for third-party JavaScript libraries. This repository, named DefinitelyTyped (, quickly became very popular, and is currently the place to go for high-quality definition files. DefinitelyTyped currently has over 5,000 definition files, built up over time from hundreds of contributors from all over the world.

If we were to measure the success of...