React-native-navigation: you should be able to check the stack

[reganperkins]

Issue Description

There is currently no documented way to check what elements are in the stack or to check the stack length.

Steps to Reproduce / Code Snippets / Screenshots

In the app I am creating there are multiple ways a user can navigate to different pages. The different ways a user might navigate to the page effects if I should use pop, pushTo or setStackRoot. For example lets say in the drawer I have a list of teams and workspaces, when changing to a team or workspace from the drawer I would use setStackRoot to make sure all the previous stack is cleared. When going through the main page I would be using pushTo when entering a team and like wise pushTo when entering a workspace. However when using the main page navigation to move back from the workspace to the team I would use pop.

The issue comes in when you mix using navigation from the drawer and the main page. In the case of having used the drawer to get to the workspace and then using the main page navigation to go back to the team, the team is not in the nav stack and pop workspace fails. being able to check that the component is in the stack or that the stack is of a certain length would really help.

If there is a method I can use that I did not find please let me know

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Environment

• React Native Navigation version: Current
• React Native version: .56
• Platform(s) (iOS, Android, or both?): All
• Device info Any

[ItsNoHax]

Same goes for checking the current visibility of a drawer

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
If you believe the issue is still relevant, please test on the latest Detox and report back. Thank you for your contributions.

[stale[bot]]

The issue has been closed for inactivity.

[pkyeck]

This is still important. Anyone working on this? I started looking at it from a iOS-perspective but haven't done any objective-c in a while ...