/**
 * Persistent Database
 */
declare class PDB {
    readonly dbName: string;
    private driver;
    constructor(walletAddress: string);
    /**
     * Local
     */
    createInstance: (appId: string) => LocalForage;
    dropInstance: (appId: string) => Promise<void>;
    all: () => Promise<any>;
}
export default PDB;
/**
 * High abtraction pdb for app
 */
export declare const createPDB: (walletArress: string, appId: string) => LocalForage | undefined;