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

Dependency Injection

In our last chapter, we explored the concepts of object-oriented programming, and worked through the process of building an application that conformed to object-oriented design principles. The Gang of Four (GoF) design patterns can be broken down into three main groups. The first of these groups is named Creational patterns, and covers numerous ways of creating objects. The second of these groups is named Structural patterns, and describe methods of designing object hierarchies that work together to achieve encapsulation and loose coupling. The third of these groups is named Behavioral patterns, and are designed to cover the behavior of a group of objects together in order to achieve certain goals. Over time, these patterns have sparked a wider interest in finding the simplest and best solutions for a wide range of programming problems.

As systems have become...