OK, so things are looking pretty great. We now have the beginnings of a stack-based navigation system in a little toy application. We can drill down to a feature, interact with that feature, and then pop back. And most importantly the feature we drill down to is a fully self-contained Composable Architecture feature that manages its own effects, but at the same time the parent can listen for anything happening inside the child.

Yeah, and we’re going to need that functionality now because although what we have done so far is looking good, we also can only drill down a single layer. How can we allow drilling down to more layers?

Let’s check that out.