looks about like what I'd expect from this move - you're ahead of me on verifying though, I was having trouble with the example since it's pretty out of date even though it is based on react-native-test-app which normally makes things pretty easy

need to work through both of these (the header import one and this one) before merging but I don't expect issues

Hmm, I didn't test this with the example app since my experience has been yarn 4 upgrades generally work. I can try that real fast and maybe also update the example app while I'm at it. With the usual caveat I may be slow.

You're faster than me at the moment! The react-native-test-app repo has a link to a PR they did that shows what it's like to upgrade from RNTA 2 to RNTA 3 (it's mostly erasing things), and the upgrade to react-native current is mostly just replacing the babel and metro entries with the new monorepo ones from the react-native repo. It should be relatively quick but it still takes me a couple hours each time because I test pretty methodically

@mikehardy Can this merge?