You're reading from Micro State Management with React Hooks Explore custom hooks libraries like Zustand, Jotai, and Valtio to manage global states

Product type Paperback

Published in Feb 2022

Publisher Packt

ISBN-13 9781801812375

Length 254 pages

Edition 1st Edition

Languages

JavaScript

Tools

React

Concepts

Front End Web Development

Author (1):

Daishi Kato

View More author details

Table of Contents (16) Chapters

Preface

1. Part 1: React Hooks and Micro State Management

2. Chapter 1: What Is Micro State Management with React Hooks? FREE CHAPTER

3. Part 2: Basic Approaches to the Global State

4. Chapter 2: Using Local and Global States

5. Chapter 3: Sharing Component State with Context

6. Chapter 4: Sharing Module State with Subscription

7. Chapter 5: Sharing Component State with Context and Subscription

8. Part 3: Library Implementations and Their Uses

9. Chapter 6: Introducing Global State Libraries

10. Chapter 7: Use Case Scenario 1 – Zustand

11. Chapter 8: Use Case Scenario 2 – Jotai

12. Chapter 9: Use Case Scenario 3 – Valtio

13. Chapter 10: Use Case Scenario 4 – React Tracked

14. Chapter 11: Similarities and Differences between Three Global State Libraries

15. Other Books You May Enjoy

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Chapter 3: Sharing Component State with Context

React has provided Context since version 16.3. Context has nothing to do with states, but it's a mechanism for passing data from component to component instead of using props. By combining Context with a component state, we can provide a global state.

In addition to the Context support provided since React 16.3, React 16.8 introduced the useContext hook. By using useContext and useState (or useReducer), we can create custom hooks for a global state.

Context is not fully designed for global states. One of the known limitations is that all Context consumers re-render upon updates, which can lead to extra re-renders. It's a general recommendation to split a global state into pieces.

In this chapter, we discuss the general recommendations for using Context and show some concrete examples. We also discuss some techniques to use Context with TypeScript. The goal is to make you feel confident with using Context for a global...