feature req: connecting social oauth profiles

[geertbrit]

Would be very useful to enable a user to connect multiple social oauth profiles to one account.
Is this on the roadmap?

[deontologician]

I know the metadata supports multiple auth methods per user, but I don't know how we can actually do it. I'm pretty sure doing OAuth creates a branch new user. @Tryneus how should this work?

[marshall007]

Firebase allows you to "link" multiple auth providers to a account (see docs). Once the user is already signed in to one of their accounts you can then link others by doing:

firebase.auth.currentUser.link(<firebase.auth.AuthCredential>).then(function(user) {
  console.log("Account linking success", user);
});

I think the existing behavior of the OAuth flow always creating a new user by default should remain. I like how linking additional providers is all part of their client API.