Method initializeApp

packages/firebase-core/index.d.ts:81–81

(options?: FirebaseOptions, configOrName?: FirebaseConfig | string)

	app(name?: string): FirebaseApp;

	initializeApp(options?: FirebaseOptions, configOrName?: FirebaseConfig | string): Promise<FirebaseApp>;

	initializeAppWithPath(path: string, options?: FirebaseOptions, config?: FirebaseConfig): Promise<FirebaseApp>;
}