import { type IDBPDatabase } from 'idb';
import type { NutstashDB } from './model.js';
export declare const DB_VERSION = 6;
export declare const DB_NAME = "nutstash-db";
export declare class DB {
    private static _db;
    static getInstance: () => Promise<IDBPDatabase<NutstashDB>>;
    static openDatabase(): Promise<IDBPDatabase<NutstashDB>>;
    static deleteDatabase(): Promise<void>;
    static close(): Promise<void>;
}