It is a very old project developed on v0.60.4 react native and not running on any of the versions.
I tried the easy way by creating demo project with latest React Native version and then adding SRC folder in same. It resulted in many errors & deprecated code.

I have these two components one is a modal and the other the stack navigator. so in the stack navigator im defining a function that will toggle the modal, but the function is not being passed and dont know the reason why,