The container

Here's a short summary of how the Tempest container works.

• Tempest doesn't have service providers like Laravel. Instead, it has initializer classes. Think of an initializer as a class that knows how to construct an object or interface.
• Tempest will discover these initializer classes for you. You don't need to register them anywhere.
• The container will also autowire as much as possible, so you only need initializer classes if you need to do manual setup work

Here's an example of a very simple initializer class:

#[Singleton]
final readonly class LoggerInitializer implements Initializer
{
    public function initialize(Container $container): LoggerInterface|Logger
    {
        return new GenericLogger(
            $container->get(LogConfig::class),
        );
    }
}

A couple of things to note about it:

• It has the #[Singleton] attribute, which means that this dependency will be registered as a singleton
• Tempest knows what kind of objects this initializer can create, based on the return type. This initializer will be used any time a LoggerInterface or Logger is requested from the container
• Again, you don't need to register this class anywhere. Tempest will discover it for you automatically

If you want to know more about initializer discovery in particular, you can check out \Tempest\Container\InitializerDiscovery