Social login working may have some bugs to fix but at least is working on Android and Windows (from ionic serve -l) and inserting users data on firebase.

Email and Password (with validations) working too, planing on inserting password recovery on next update.

ionic cordova plugin add twitter-connect-plugin --variable FABRIC_KEY=yourkey

npm install --save @ionic-native/twitter-connect

ionic cordova plugin add cordova-plugin-facebook4 --variable APP_ID="123456789" --variable APP_NAME="myApplication"

npm install --save @ionic-native/facebook

ionic cordova plugin add cordova-plugin-googleplus --variable REVERSED_CLIENT_ID=myreversedclientid

npm install --save @ionic-native/google-plus