Use of StackNavigation.subscribe

[YektaDev]

Hi.

I was exploring the library once more🙂. I found something that I couldn't think of an answer for. Since both the stack navigation and the child stack value can both be observed, in a component containing both, what is the utility of observing StackNavigation when there's already the ability to observe Value<ChildStack<*, *>>? The latter provides way more information than what stack navigation's observer does. Isn't it true?

Thanks in advance!

[arkivanov]

Child Stack observes StackNavigation. Usually you don't need to observe it in your code.

Here is some context. A while ago there was no StackNavigation, the childStack function was returning StackRouter interface, which contained both the observable stack and the navigate function. This caused "Chicken and egg" problems, when you create a child component in the childFactory function, and you want to access StackRouter for navigation, which is not yet available. This was fixed by extracting the navigation part to the separate StackNavigation, which is created beforehand.