export declare class SqlStorage {
    private db;
    constructor();
    initDB(sql: string, dbName: string): Promise<{}>;
    private executeSql(sql, params?);
    getAll(tableName: any): Promise<{}>;
    getByField(tableName: any, valueField: any, fieldName: any, limit?: any): Promise<{}>;
    query(query: any): Promise<{}>;
    save(tableName: any, data: any): Promise<{}>;
    delete(query: any, params?: any): Promise<{}>;
}