In response to:
I’m working on an app using Expo, and I was planning on “pushing notifications” using FCM (Firebase). Do you support that?
for some technical reasons its not possible for us to support other push notification systems on the Expo Client besides the one we provide (which is free and simple)
docs here: https://docs.expo.io/versions/v14.0.0/guides/push-notifications.html
You could use Firebase push notifications by detaching/ejecting
and using ExpoKit
You’d have to deal with Xcode and Android Studio in that case but there is a path to do it
docs here: https://docs.expo.io/versions/v14.0.0/guides/exponentkit.html