This is more like a general question, but in version 3.x.x there still was a function firebase.auth().fetchProvidersForEmail (..), in version 5.x.x it's not available any more.
So I guess my question is, how can I determine the providers for an email address in react-antive-firebase 5.x.x?
Replaced by auth().fetchSignInMethodsForEmail (email). RTFM, me.
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Replaced by
auth().fetchSignInMethodsForEmail (email). RTFM, me.