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

Q & A

  1. How does Reactive programming differ from object-oriented programming?

    Object-oriented programming deals with how objects are created and used and how they manage their state and behavior. An object represents an entity of the real world and can interact with the rest of the program via methods. Reactive programming, on the other hand, deals with data and how it is propagated to other parts of the system.

  2. How do observables compare to the observer pattern?

    Both are similar, but they work on a different level. With an observer pattern, you add and dispose of observers in the list and notify the subscriber list of any state changes using methods and encapsulation. Observables, on the other hand, are more flexible as they are built on top of the concepts of the observer pattern and can be composed in a functional way. You can think of observables as an extension of the observer pattern, managing sequences of data and composable operators.

  3. How does Reactive programming...