import { Message } from "firebase-admin/lib/messaging/messaging-api";
import { BaseService } from "../../common/classes/base.service";
export declare class FirebaseManager extends BaseService {
    EVENTS: {
        EXPORT_INITIALIZED: string;
        EXPORT_IN_PROGRESS: string;
        EXPORT_COMPLETED: string;
        EXPORT_FAILED: string;
    };
    private _initialized;
    private auth;
    private messaging;
    private db;
    constructor();
    private init;
    notify(message: Message): Promise<void>;
    private _deleteAllFromCollection;
}