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

Inheritance – Angular 1 versus Backbone

Inheritance is a very powerful feature of object-oriented programming, and is also a fundamental concept when using JavaScript frameworks. Using a Backbone controller or an Angular 1 controller within the framework relies on certain characteristics or functions being available. We have seen, however, that each framework implements inheritance in a different way.

As JavaScript (prior to EC6) did not have the concept of inheritance, each of these older frameworks needed to find a way to implement it. In Backbone, this inheritance implementation is via the extend function of each Backbone object. As we have seen, the TypeScript extends keyword follows a similar implementation to Backbone, allowing the framework and language to dovetail each other.

Angular 1, on the other hand, uses its own implementation of inheritance, and defines functions...