/**
 * @category indexedDB操作辅助类
 */
export declare class IDBHelper {
    private dbRq?;
    private version;
    private name;
    private upgradePromise;
    private resetPromise;
    /**
     * 构造函数
     * @param name 数据库名称
     * @throws Error 数据库名称不能为空
     * @returns IDBHelper实例
     * ***
     */
    constructor(name: string);
    /**
     * 获取数据库版本号
     */
    private getVersion;
    /**
     * 检查连接状态
     */
    private checkConnect;
    /**
     * 获取更新后的DB
     */
    private updateDb;
    /**
     * 获取DB
     */
    private getDb;
    /**
     * 创建表
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.createTable('tn');
     * ```
     * @param tableNameList 表名列表
     * @param keyPath 主键
     * @returns { Promise<boolean> }
     * ***
     */
    createTable(tableNameList: string[] | string, keyPath?: string): Promise<boolean>;
    /**
     * 删除表
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.deleteTable('tn');
     * ```
     * @param tableNameList 表名列表
     * @returns { Promise<boolean> }
     * ***
     */
    deleteTable(tableNameList: string[] | string): Promise<boolean>;
    /**
     * 删除所有表
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.deleteAllTable();
     * ```
     * @returns { Promise<boolean> }
     * ***
     */
    deleteAllTable(): Promise<boolean>;
    /**
     * 获取所有表名
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.getAllTableName();
     * ```
     * @returns false 或 string[]
     * ***
     */
    getAllTableName(): Promise<false | DOMStringList>;
    /**
     * 增加/修改表中某行数据
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.setTableRow('tn', '你好！');
     * ```
     * @param tableName 表名
     * @param data 数据
     * @returns { Promise<boolean> }
     * ***
     */
    setTableRow(tableName: string, data: any): Promise<false | undefined>;
    /**
     * 获取表中某行数据
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.getTableRow('tn', 'key');
     * ```
     * @param tableName 表名
     * @param key 键
     * @returns { Promise<boolean> }
     * ***
     */
    getTableRow(tableName: string, key: string): Promise<unknown>;
    /**
     * 删除表中某行数据
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.deleteTableRow('tn', 'key');
     * ```
     * @param tableName 表名
     * @param key 键
     * @returns { Promise<boolean> }
     * ***
     */
    deleteTableRow(tableName: string, key: string): Promise<false | undefined>;
    /**
     * 获取表中所有数据
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.getAllTableRow('tn');
     * ```
     * @param tableName 表名
     * @param range [范围](https://developer.mozilla.org/zh-CN/docs/Web/API/IDBKeyRange)
     * @returns { Promise<any[]> }
     * ***
     */
    getAllTableRow(tableName: string, range?: IDBKeyRange): Promise<unknown>;
    /**
     * 获取表数据条数
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.getTableRowCount('tn');
     * ```
     * @param tableName 表名
     * @param range [范围](https://developer.mozilla.org/zh-CN/docs/Web/API/IDBKeyRange)
     * @returns { Promise<number> }
     * ***
     */
    getTableRowCount(tableName: string, range?: IDBKeyRange): Promise<unknown>;
    /**
     * 关闭数据库
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.close();
     * ```
     * @returns { Promise<boolean> }
     * ***
     */
    close(): Promise<false | undefined>;
    /**
     * 重置数据库
     * @example
     * ```ts
     * const db = new IDBHelper('test');
     * await db.reSet();
     * ```
     * @returns { Promise<boolean> }
     * ***
     */
    reSet(): Promise<false | Boolean>;
}