Function initializePerformance

initializePerformance(
app: ReactNativeFirebase.FirebaseApp,
settings?: PerformanceSettings,
): FirebasePerformance
Returns a FirebasePerformance instance for the given app (aligned with the Firebase JS SDK). Can only be called once per app during initialization in typical usage.
Parameters
- app: ReactNativeFirebase.FirebaseApp
  The FirebaseApp to use.
- Optionalsettings: PerformanceSettings
  Optional PerformanceSettings.
Returns FirebasePerformance
- Defined in modular.ts:56