Implementing animations

When we think about UIs and the browser, we must surely think about animations as well. Animated UIs are more pleasant for users, and they are a very important tool to show users that something has happened or is about to occur.

This section does not aim to be an exhaustive guide to creating animations and beautiful UIs; the goal here is to provide you with some basic information about the common solutions we can put in place to animate our React components.

For a UI library such as React, it is crucial to provide an easy way for developers to create and manage animations. React comes with an add-on, called react-transition-group, which is a component that helps us build animations in a declarative way. Again, being able to perform operations declaratively is incredibly powerful, and it makes the code much easier to reason about and share with the team.

The first thing we need to do to start building an animated component is to install the add-on...