declare const STORAGE_KEYS: {
    readonly CHAT_HISTORY_LIST: "earthsdkui_chatHistoryList";
    readonly CURRENT_CHAT_ID: "earthsdkui_currentChatId";
    readonly SILICONFLOW_API_KEY: "earthsdkui_siliconflow_api_key";
    readonly LOCAL_MODELS: "earthsdkui_local_models";
    readonly CURRENT_MODEL_CONFIG: "earthsdkui_current_model_config";
    readonly EARTH_SERVER_SESSION_ID: "earthsdkui_earthserver_session_id";
};
type StorageKey = typeof STORAGE_KEYS[keyof typeof STORAGE_KEYS];
/**
 * StorageService 类
 * 提供统一的 localStorage 读取/写入/防抖接口
 */
export declare class StorageService {
    private debounceTimers;
    /**
     * 从 localStorage 读取数据
     */
    get<T>(key: StorageKey | string): T | null;
    /**
     * 同步写入 localStorage
     */
    set<T>(key: StorageKey | string, value: T): void;
    /**
     * 防抖写入 localStorage
     * 用于频繁更新的数据（如聊天历史）
     * @param key 存储键
     * @param value 存储值
     * @param delay 防抖延迟（毫秒），默认 300ms
     */
    debouncedSet<T>(key: StorageKey | string, value: T, delay?: number): void;
    /**
     * 立即触发防抖写入（不清除之前的定时器，立即保存）
     */
    flushDebounced<T>(key: StorageKey | string, value: T): void;
    /**
     * 清除所有防抖定时器并保存
     */
    flushAll(): void;
    /**
     * 移除指定键
     */
    remove(key: StorageKey | string): void;
    /**
     * 清除所有存储
     */
    clear(): void;
}
export declare const storageService: StorageService;
export { STORAGE_KEYS };