React Native - ReactComponentTreeHook.purgeUnmountedComponents is not a function

Question

I get this error message when I use react-native run-ios or just build for iOS:

ReactComponentTreeHook.purgeUnmountedComponents is not a function. (In 'ReactComponentTreeHook.purgeUnountedComponents()', 'ReacComponentTreeHook.purgeUnmountedComponents' is undefined)

I have used CRNA and ejected. I have also used react-native-push-notification and react-native-beacons-manager and followed the instructions of both. The project works when I run it in Android.

I have read here that it depends on the fact that I am using the minified version of react and unminified version of react-dom but I don't see where I can change that when it comes to React Native.

How do I solve this?

Answer 1

In the end, I figured that the versions of react and react-native packages that I were installed didn't "match". I saw the message npm WARN [email protected] requires a peer of [email protected] but none was installed. (I had a previous version installed because of another warning that I got).

As soon as I installed [email protected] instead, the problem was solved. Apparently facebook has removed the function ReactComponentTreeHook.purgeUnmountedComponents from the code, it is not to be used anymore.