[firebase-core]: Unable to Initialize Firebase App

Hello Team,
Can you assist with the error below, when trying to initialize the firebase app from the firebase-core?
Here is how I am initializing it

export class AppComponent implements OnInit {

    ngOnInit(): void {
        firebase().initializeApp().then((app) => {
            console.log(app);
        })
    }

}

Here is the error that shows up

JS: Error: Cannot read property 'FirebaseApp' of undefined
JS:     at file: src/webpack:/testapp/node_modules/@nativescript/firebase-core/index.android.js:295:0
JS:     at new ZoneAwarePromise (file: src/webpack:/testapp/node_modules/zone.js/fesm2015/zone.js:1429:0)
JS:     at Firebase.initializeApp (file: src/webpack:/testapp/node_modules/@nativescript/firebase-core/index.android.js:234:0)
JS:     at AppComponent.ngOnInit (file: src/webpack:/testapp/src/app/app.component.ts:6:16)
JS:     at callHook (file: src/webpack:/testapp/node_modules/@angular/core/fesm2015/core.mjs:2491:0)
JS:     at callHooks (file: src/webpack:/testapp/node_modules/@angular/core/fesm2015/core.mjs:2460:0)
JS:     at executeInitAndCheckHooks (file: src/webpack:/testapp/node_modules/@angular/core/fesm2015/core.mjs:2411:0)
JS:     at refreshView (file: src/webpack:/testapp/node_modules/@angular/core/fesm2015/core.mjs:11971:0)
JS:     at detectChangesInternal (file: src/webpack:/testapp/node_modules/@angular/core/fesm2015/core.mjs:13174:0)
JS:     at RootViewRef.detectChanges (file:///data/data/org.nativescript.testapp/fi...

Start by reproducing the initialization from src/app/app.component.ts and inspect the failing Firebase.initializeApp path in node_modules/@nativescript/firebase-core/index.android.js, especially the reported FirebaseApp access. Check the project’s NativeScript and Firebase setup before tracing the Android-specific failure. Done means the app initializes successfully without the reported undefined FirebaseApp error.