Hi Paul, thanks for the article!
Phillip Winder
12

Hm. I have a feeling it might because of the beta.9 release (https://github.com/react-community/react-navigation/releases/tag/v1.0.0-beta.9). navigation options are changed to a flat structure, so the code in the github might be incompatible, assuming you’re on the latest version of React Navigation.

I’ll fix it in the github demo project. Thanks for reporting!

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