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

Chapter 8: Developing Modern and Robust TypeScript Applications

So far in this book, we have focused on learning about the classical design patterns and expanded our exploration with functional and reactive programming methodologies. In the last two chapters of this book, we will switch gears and focus on understanding the best practices and recommendations for developing real-world TypeScript applications.

In this chapter, we begin by demonstrating some of the reasonable combinations of design patterns that you can consider so that you can get the best of both worlds. Next, we will also gain a considerable understanding of how to use the existing utility types and functions that TypeScript exposes over the built-in type definitions. Those utility types are there to help us annotate our models with commonly used types. We will next see an introduction to Domain-Driven Design (DDD) with TypeScript, which is a way to think about and design programming systems using a domain model...