export default class IndexedDB {
    private dbName;
    private dbVersion;
    private request;
    private db;
    private objName;
    openDB(onsuccess: any, onerror: any, onupgradeneeded: any, objName: any, keyPath: any, objData: any): Promise<void>;
    get<T>(id: any, valuePath: any): Promise<T>;
    set(objData: any): Promise<unknown>;
    remove(id: any): Promise<unknown>;
    closeDB(): void;
    /**
    * check whether indexedDB is supported by the current browser
    */
    static canUse(): boolean;
}