Ionic App v4 Social login - best practice?

Hi, I’m porting an Ionic v1 app to v4. In v1 I used Firebase social auth to log in with Facebook and Google. Worked really well but is now broken in v4.

How is everyone else doing social OAuth log in these days? I’ve seen the native auth Cordova plugins such as “cordova-plugin-facebook4” but I release lots of apps and don’t want to have to set this up for every app. Also, what happens if someone doesnt have the native Facebook app installed?

Any help much appreciated!