/*!
 * Jodit Editor (https://xdsoft.net/jodit/)
 * Released under MIT see LICENSE.txt in the project root for license information.
 * Copyright (c) 2013-2026 Valerii Chupurnov. All rights reserved. https://xdsoft.net
 */
/**
 * @module storage
 */
import type { IAsyncStorage, StorageValueType } from "../../../types/index";
/**
 * Persistent storage using IndexedDB
 */
export declare class IndexedDBProvider<T = StorageValueType> implements IAsyncStorage<T> {
    readonly dbName: string;
    private dbPromise;
    private readonly DB_VERSION;
    private readonly storeName;
    constructor(dbName?: string, storeName?: string);
    /**
     * Initialize or get the database connection
     */
    private getDB;
    /**
     * Perform a transaction on the store
     */
    private performTransaction;
    set(key: string, value: T): Promise<this>;
    delete(key: string): Promise<this>;
    get<R = T>(key: string): Promise<R | void>;
    exists(key: string): Promise<boolean>;
    clear(): Promise<this>;
    /**
     * Close the database connection
     */
    close(): Promise<void>;
    /**
     * Get all keys in the store
     */
    keys(): Promise<string[]>;
    /**
     * Get all values in the store
     */
    values(): Promise<T[]>;
    /**
     * Get all entries (key-value pairs) in the store
     */
    entries(): Promise<Array<[
        string,
        T
    ]>>;
}
export declare function clearUseIndexedDBCache(): void;
/**
 * Check if IndexedDB is available
 */
export declare function canUseIndexedDB(): Promise<boolean>;