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In this case, I'm using Firebase auth and didn't see an auth provider option to allow username only. I think it may let you sign up with a nonexistent email tho
by scubakid 3y ago
In this case, I'm using Firebase auth and didn't see an auth provider option to allow username only. I think it may let you sign up with a nonexistent email though, so maybe that's close-ish to what you were looking for?