Function initializeApp

initializeApp(
options: FirebaseAppOptions,
configOrName?: string | FirebaseAppConfig,
): Promise<ReactNativeFirebase.FirebaseApp>
Initializes a Firebase app with the provided options and name.
Parameters
- options: FirebaseAppOptions
  Options to configure the services used in the app.
- OptionalconfigOrName: string | FirebaseAppConfig
  The optional name of the app, or config for the app to initialize (a name of '[DEFAULT]' will be used if omitted).
Returns Promise<ReactNativeFirebase.FirebaseApp>
The initialized Firebase app.

Remarks
On React Native Firebase this is async (Promise<FirebaseApp>) because secondary app creation crosses the native bridge. The default app is still configured from native GoogleService-Info.plist / google-services.json at launch.
- Defined in modular.ts:84