I am unlinking existing providers in Flutter for FirebaseAuth. I am unable to find the providers constants names like specified in the docs for iOS. However, I cannot find the provider id constants in Flutter. No documentaiton seems to find it. Instead of creating my own constants and keeping them updated, I would like to find the constants from the official packages.

FireBaseAuth Constants:

Currently, I am checking them manually like facebook.com, google.com, apple.com so on.

 TextButton(
                    onPressed: () async {
                      final user = FirebaseAuth.instance.currentUser;

                      print(user);

                      if (user != null) {
                        final providersList = user.providerData;

                        final result = providersList.where((provider) =>
                            provider.providerId == 'facebook.com');

                        if (result.isNotEmpty) {
                          final facebookProvider = result.first;

                          user.unlink(facebookProvider.providerId);
                        }
                      }
                    },
                    child: const Text('Unlink Facebook'),
                  ),

CodePudding user response：

The constants for those strings are defined here in the code for the plugin. But I don't immediately seem an enumeration or something like that of those constants or their string values.

Given what I see elsewhere in the source code of the package, it seems that using the string is the most common (and that constant probably a better alternative).