import type { Logging } from 'homebridge';
import type { SecuritySystemOptions } from '../interfaces/options-interface.js';
import type { SystemState } from '../interfaces/system-state-interface.js';
/** Persists and restores security system state across Homebridge restarts. */
export declare class StorageService {
    private readonly log;
    private readonly options;
    private readonly storagePath;
    private initialised;
    constructor(log: Logging, options: SecuritySystemOptions, storagePath: string);
    init(): Promise<void>;
    load(state: SystemState): Promise<void>;
    save(state: SystemState): Promise<void>;
}