In this lesson, we will use the Zeitwerk gem to load our dependencies without explicitly requiring them.

First things first: it's Zeitwerk, not Zeitwork. For some reason, I always thought it was Zeitwork. It was only when I tried to install the gem I noticed the typo. Luckily, there's no such gem called Zeitwork.

In Rails, you don't have to require classes and modules in advance. Somehow, they're just available to use right when you need them. This is all thanks to Zeitwerk, which is written by Xavier Noria, member of the Rails core team.

Now, you can enjoy the benefits of Zeitwerk without really understanding what it is or how it works, but it's good to know how to use it outside Rails to get the benefits it provides in your Ruby projects. For example, the new Kamal gem uses Zeitwerk internally to load its dependencies.

Let's get started.