Book Image

Learning Redux

By : Daniel Bugl
Book Image

Learning Redux

By: Daniel Bugl

Overview of this book

The book starts with a short introduction to the principles and the ecosystem of Redux, then moves on to show how to implement the basic elements of Redux and put them together. Afterward, you are going to learn how to integrate Redux with other frameworks, such as React and Angular. Along the way, you are going to develop a blog application. To practice developing growing applications with Redux, we are going to start from nothing and keep adding features to our application throughout the book. You are going to learn how to integrate and use Redux DevTools to debug applications, and access external APIs with Redux. You are also going to get acquainted with writing tests for all elements of a Redux application. Furthermore, we are going to cover important concepts in web development, such as routing, user authentication, and communication with a backend server After explaining how to use Redux and how powerful its ecosystem can be, the book teaches you how to make your own abstractions on top of Redux, such as higher-order reducers and middleware. By the end of the book, you are going to be able to develop and maintain Redux applications with ease. In addition to learning about Redux, you are going be familiar with its ecosystem, and learn a lot about JavaScript itself, including best practices and patterns.
Table of Contents (13 chapters)

Using Redux DevTools

We have successfully set up Redux DevTools and webpack hot reloading. We can now run the app in production mode via npm start and in development mode via npm run start:dev:

  • In development mode (npm run start:dev):
    • We can use Redux DevTools to debug our Redux application's state and actions.
    • Whenever we make a code change in a component, webpack will recompile and replace the code for that component (hot reloading). This happens automatically, without a refresh, whenever you save a file in the src/ directory.
    • Hot reloading also works for reducers. In this case, the state is recomputed automatically, without a refresh.
    • We can store state in debug sessions by adding ?debug=SESSION_NAME to the URL.
  • In production mode (npm start):
    • We have the same app, without Redux DevTools and hot reloading.
    • We build the app first, then serve the static files with a...