declare type ObjectStoreParam = {
    storeName: string;
    option?: IDBObjectStoreParameters;
};
declare type TransactionParam = string | string[] | ObjectStoreParam | ObjectStoreParam[];
declare type ObjectStoreCreator = (storeName: string) => IDBObjectStorePlus;
export interface IDBObjectStorePlus {
    readonly autoIncrement: boolean;
    readonly indexNames: DOMStringList;
    readonly keyPath: string | string[];
    name: string;
    readonly transaction: IDBTransaction;
    add(value: any, key?: IDBValidKey): Promise<IDBValidKey>;
    clear(): Promise<undefined>;
    count(key?: IDBValidKey | IDBKeyRange): Promise<number>;
    createIndex(name: string, keyPath: string | string[], options?: IDBIndexParameters): IDBIndex;
    delete(key: IDBValidKey | IDBKeyRange): Promise<undefined>;
    deleteIndex(name: string): void;
    get(query: IDBValidKey | IDBKeyRange): Promise<any | undefined>;
    getAll(query?: IDBValidKey | IDBKeyRange | null, count?: number): Promise<any[]>;
    getAllKeys(query?: IDBValidKey | IDBKeyRange | null, count?: number): Promise<IDBValidKey[]>;
    getKey(query: IDBValidKey | IDBKeyRange): Promise<IDBValidKey | undefined>;
    index(name: string): IDBIndex;
    openCursor(query?: IDBValidKey | IDBKeyRange | null, direction?: IDBCursorDirection): Promise<IDBCursorWithValue | null>;
    openKeyCursor(query?: IDBValidKey | IDBKeyRange | null, direction?: IDBCursorDirection): Promise<IDBCursor | null>;
    put(value: any, key?: IDBValidKey): Promise<IDBValidKey>;
}
declare class DBManagerFactory {
    dbManagerMap: Map<string, DBManager>;
    private getOrCreateDBManager;
    get(dbName: string): DBManager;
    clear(dbName: string): void;
}
export declare class DBManager {
    private initPromise;
    private openStatus;
    private version;
    private dbName;
    private db;
    private isClose;
    constructor(dbName: string);
    private task;
    pushTask(target: any): Promise<any> | undefined;
    close(): Promise<any> | undefined;
    private transTransactionParam;
    transaction(storeName: TransactionParam, mode?: 'readwrite' | 'readonly'): Promise<ObjectStoreCreator | void>;
    private init;
    private upgradeneeded;
}
export declare const dbManagerFactory: DBManagerFactory;
export {};