import firebase from '@react-native-firebase/app'; import defaultExport, { firebase as firebaseFromModule } from '@react-native-firebase/auth'; // checks module exists at root console.log(firebase.auth().app.name); console.log(firebase.auth().currentUser); // checks module exists at app level console.log(firebase.app().auth().app.name); console.log(firebase.app().auth().currentUser); // checks statics exist console.log(firebase.auth.SDK_VERSION); // checks statics exist on defaultExport console.log(defaultExport.SDK_VERSION); // checks root exists console.log(firebase.SDK_VERSION); // checks firebase named export exists on module console.log(firebaseFromModule.SDK_VERSION); // checks multi-app support exists console.log(firebase.auth(firebase.app()).app.name); // checks default export supports app arg console.log(defaultExport(firebase.app()).app.name);