Book Image

TypeScript 4 Design Patterns and Best Practices

By : Theofanis Despoudis
Book Image

TypeScript 4 Design Patterns and Best Practices

By: Theofanis Despoudis

Overview of this book

Design patterns are critical armor for every developer to build maintainable apps. TypeScript 4 Design Patterns and Best Practices is a one-stop guide to help you learn design patterns and practices to develop scalable TypeScript applications. It will also serve as handy documentation for future maintainers. This book takes a hands-on approach to help you get up and running with the implementation of TypeScript design patterns and associated methodologies for writing testable code. You'll start by exploring the practical aspects of TypeScript 4 and its new features. The book will then take you through the traditional gang of four (GOF) design patterns in their classic and alternative form and show you how to use them in real-world development projects. Once you've got to grips with traditional design patterns, you'll advance to learning about their functional programming and reactive programming counterparts and how to couple them to deliver better and more idiomatic TypeScript code. By the end of this TypeScript book, you'll be able to efficiently recognize when and how to use the right design patterns in any practical use case and gain the confidence to work on scalable and maintainable TypeScript projects of any size.
Table of Contents (14 chapters)
1
Section 1: Getting Started with TypeScript 4
4
Section 2: Core Design Patterns and Concepts
8
Section 3: Advanced Concepts and Best Practices

Summary

This chapter demonstrated all the fundamental aspects of structural design patterns and how to utilize them effectively in practice. These patterns focus on the internal and external composition of classes and how they share implementations.

We started with discovering the details of the Adapter pattern and how it helps make classes work with others by implementing a common interface. Then, we explored the Bridge pattern, which allows us to separate and abstract from its implementation. Using the Decorator and Proxy patterns, you can enhance the functionality of the objects at runtime without using inheritance. Then we explored how the Façade pattern uses a simpler interface to control complex workflows. By structuring a group of objects as composites, you can create a hierarchical system that shares a common interface. Lastly, using the Flyweight pattern, you learned how to use a shared state to minimize memory usage or space.

Using these patterns will help you...