import { StorageService } from '../../storage/services/storage.service';
import { ConnectionState } from '../displays.constants';
import { DisplayEntity } from '../entities/displays.entity';
export declare class DisplayConnectionStateService {
    private readonly storageService;
    private readonly logger;
    private statusMap;
    constructor(storageService: StorageService);
    write(display: DisplayEntity, status: ConnectionState): Promise<void>;
    readLatest(display: DisplayEntity): Promise<{
        online: boolean;
        status: ConnectionState;
    }>;
    delete(display: DisplayEntity): Promise<void>;
}