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

Test-Driven Development

In our last chapter, we took an in-depth look at the MVC design pattern and built a sample application using four different frameworks that all use that pattern. We saw that each framework does things slightly differently in terms of models and views, and that each framework had the notion of a controller component, or an application component. The basic principles of the MVC design pattern have given rise to other similar patterns, for instance Model View Presenter (MVP) and Model View View Model (MVVM). When discussing this group of patterns together, they are described by some as Model View Whatever (MVW), or MV*.

Some of the benefits of this MV* style of writing applications include modularity and separation of concerns, which we will cover in later chapters. But this MV* style of building applications also brings with it a huge advantage—the...