import { UserDevicesService } from "src/user-devices/user-devices.service";
export declare class FirebaseProvider {
    private readonly userDevicesService;
    constructor(userDevicesService: UserDevicesService);
    send(tokens: string[], title: string, body: string, data: Record<string, string>): Promise<void>;
    verifyToken(idToken: string): Promise<{
        email: string;
        providerId: string;
        name: any;
        picture: string | undefined;
    }>;
    private cleanupInvalidTokens;
}