Book Image

Learn React Hooks

By : Daniel Bugl
Book Image

Learn React Hooks

By: Daniel Bugl

Overview of this book

React Hooks revolutionize how you manage state and effects in your web applications. They enable you to build simple and concise React.js applications, along with helping you avoid using wrapper components in your applications, making it easy to refactor code. This React book starts by introducing you to React Hooks. You will then get to grips with building a complex UI in React while keeping the code simple and extensible. Next, you will quickly move on to building your first applications with React Hooks. In the next few chapters, the book delves into various Hooks, including the State and Effect Hooks. After covering State Hooks and understanding how to use them, you will focus on the capabilities of Effect Hooks for adding advanced functionality to React apps. You will later explore the Suspense and Context APIs and how they can be used with Hooks. Toward the concluding chapters, you will learn how to integrate Redux and MobX with React Hooks. Finally, the book will help you develop the skill of migrating your existing React class components, and Redux and MobX web applications to Hooks. By the end of this book, you will be well-versed in building your own custom Hooks and effectively refactoring your React applications.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Introduction to Hooks
5
Section 2: Understanding Hooks in Depth
13
Section 3: Integration and Migration

Enforcing the rules of Hooks

If we stick to the convention of prefixing Hook functions with use, we can automatically enforce the other two rules:

  • Only call Hooks from React function components or custom Hooks
  • Only call Hooks at the top level (not inside loops, conditions, or nested functions)

In order to enforce the rules automatically, React provides an eslint plugin called eslint-plugin-react-hooks, which will automatically detect when Hooks are used, and will ensure that the rules are not broken. ESLint is a linter, which is a tool that analyzes source code and finds problems such as stylistic mistakes, potential bugs, and programming errors.

In the future, create-react-app is going to include this plugin by default.

Setting up eslint-plugin-react-hooks

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