Gain insights into building a weather app with React, Redux, Immutable.js, and Jest. Learn about their problems and solutions, enhancing your app's performance and testing capabilities.

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I'm Max Stoiber (@mxstbr) - the creator of react-boilerplate, one of the most popular react starter kits (10K+ stars on github).

I'll teach you how to build a real-world application using React, Redux and Immutable.js. We will use interactive playgrounds to create our app from scratch (no setup required).

The course can be divided into 4 logical parts: 

1. React: Understand what is React and what problem it solves. We'll build our first weather app using just React.
2. Redux: Identify potential issues in our React app and learn how Redux & Redux-Thunk can solve those issues. 
3. Immutable.js: Learn Immutable.js and how it can help in making our Redux apps performant. 
4. Jest: Lastly, we will learn how to test our React/Redux app using Jest.

If you are going to build a production app, chances are that you are going to use all of the above technologies so let's get started. 

* Understanding of Javascript is required. 
** Understanding of ES6 (let/const, arrow functions etc.) would be beneficial.

Learn React.js, Redux & Immutable.js while building a weather app

As we discovered in Chapter 4: Redux, immutability is quite helpful when developing applications! It makes it so much easier to reason about what is happening to your data, as nothing can be mutated from somewhere entirely different.

The problem is that JavaScript is by default a mutable language. Other developers that don't have this intricate knowledge of immutability might still mess up, mutate the state and break our app in unexpected ways.

Facebook released a second library called `Immutable.js` that adds immutable data structures to JavaScript! Let's see what this looks like.

Learn how to enhance your application with immutability to increase the performance and avoid mutation bugs!

1. React basics

2. Your first React app

3. Creating a forecast graph

4. State Management

5. ImmutableJS

6. Testing

Appendix

Introduction to ImmutableJS