Gain insights into Redux, an open-source library for managing app state. Learn about Redux store creation, middleware, state management, error handling, testing, and building robust applications.

react.tar.gz

jest

simplee

no server

Redux

In this course, you will take a deep dive into Redux, an open-source JavaScript library for managing application state.

You will start by running through what Redux is, general concepts, and basic implementation. With the basics out of the way, you will begin working on building a recipe book application, adding more bells and whistles to it as the course progresses. You will learn to create a Redux store, how to work with middleware, state management, error handling, testing, and a whole lot more.

By the end, you will have advanced knowledge of one the most popular libraries among React and Angular developers. You will have the skills to create highly performant and consistent.

The Ultimate Guide to Redux



In Redux, most `reducers` are just `switch` statements over `action.type`. Since the `switch` syntax can be hard to read and prone to errors, a few libraries try to make writing reducers easier and cleaner.

> While it is most common for a `reducer` to examine the `type` property of the action to determine if it should act, in some cases, other parts of the action object are used. For example, you might want to show an error notification on every action with an error in the payload.

The `redux-actions` library provides the `handleActions()` utility function for reducer generation:


~~~~~~~
import { handleActions } from 'redux-actions';

//declare state
const initialState = [];

//reducer
const recipesReducer = handleActions({
  //case add_recipe
  [ADD_RECIPE]: (recipes, action) =>
    //combine recipes
    recipes.concat(action.payload),

  //case remove_recipe
  [REMOVE_RECIPE]: (recipes, action) =>
    //remove the given recipe
    recipes.filter(recipe => recipe.id === action.payload)

}, initialState);

export default recipesReducer;
~~~~~~~


If you are using Immutable.js, you might also want to look at the [redux-immutablejs](https://github.com/indexiatech/redux-immutablejs) library, which provides you with `createReducer()` and `combineReducers()` functions that are aware of Immutable.js features like getters and setters. Immutable.js is explained in the following modules.


Learn about the alternatives to using switch statements.

Introduction to Redux

Basic Redux Implementation

Cloning a Redux Boilerplate

Complete Redux Project

Creating a Store

Decorating the Store

Actions and Action Creators

Redux Thunk

Redux-Actions Library

Reducers

Avoiding Mutations

Introduction to Middleware

Your First Middleware

Middleware

State Management

Keeping a Normalized State

Persistence State

Real-World State

Server Communication

Moving Code from Action Creators

Error Handling

Server Communication II

Transforming Data

Chaining Requests

Managing Side Effects

Messaging Patterns

WebSockets

WebSocket Authentication

Testing

Testing Action Creators

Async Action Creators

Testing Reducers

Testing Middleware

Testing Async Middleware

Integration Tests

Evolution Of Redux

Final Assessment

Alternative to Switch Statements