Refactoring improves your code without changing its behavior. With refactoring, the best approach is to apply small targeted changes to a codebase. Instead of doing a huge sweeping change to your code, refactoring is better as a long-term and continuous enterprise. Refactoring TypeScript explains how to spot bugs and remove them from your code.
You’ll start by seeing how wordy conditionals, methods, and null checks make code unhealthy and unstable. Whether it is identifying messy nested conditionals or removing unnecessary methods, this book will show various techniques to avoid these pitfalls and write code that is easier to understand, maintain, and test.
By the end of the book, you’ll have learned some of the main causes of unhealthy code, tips to identify them and techniques to address them.
publication date
2019-10-18
what you will learn
Spot and fix common code smells to create code that is easier to read and understand
Discover ways to identify long methods and refactor them
Create objects that keep your code flexible, maintainable, and testable
Apply the Single Responsibility Principle to develop less-coupled code
Discover how to combine different refactoring techniques
Learn ways to solve the issues caused by overusing primitives
key features
Learn all about refactoring - why it is important and how to do it * Discover easy ways to refactor code with examples * Explore techniques that can be applied to most other programming languages
approach
Each section in this book represents a ‘code smell’. A code smell is some indication that a part of your code is rotting and becoming unhealthy. The first chapter of each section will introduce how to identify a specific code smell and why it is considered unhealthy. Then, you’ll learn techniques that can be used to address the code issue - after you've explored the problem.
audience
This book is designed for programmers who are looking to explore various refactoring techniques to develop healthy and maintainable code. Some experience in JavaScript and TypeScript can help you easily grasp the concepts explained in this book.
short description
Refactoring TypeScript is an approachable look at getting your code into shape. Learn some of the causes of unhealthy code, how to identify them, techniques to cure them, and more.
subtitle
Keeping your code healthy
keywords
Refactoring, TypeScript, JavaScript, null checks, conditionals, nested conditionals, primitives, methods, dumping grounds, objects
Product ISBN
9781839218040
