If you choose:
provider: AuthProviders.Password,
method: AuthMethods.Popup
You'll get the error:
Error: Unsupported firebase auth provider 4
Which is confusing. The real error is that the method and provider are incompatible.
We should definitely support this. Will look into adding during the 3.0 update.
Most helpful comment
We should definitely support this. Will look into adding during the 3.0 update.