import { Bucket, BucketSettings } from '@orbit/core';
export interface IndexedDBBucketSettings extends BucketSettings {
    storeName?: string;
}
/**
 * Bucket for persisting transient data in IndexedDB.
 *
 * @class IndexedDBBucket
 * @extends Bucket
 */
export declare class IndexedDBBucket extends Bucket {
    protected _storeName: string;
    protected _db: any;
    /**
     * Create a new IndexedDBBucket.
     */
    constructor(settings?: IndexedDBBucketSettings);
    upgrade(settings: IndexedDBBucketSettings): Promise<void>;
    _applySettings(settings: IndexedDBBucketSettings): Promise<void>;
    /**
     * The version to specify when opening the IndexedDB database.
     *
     * IndexedDB's default verions is 1.
     */
    get dbVersion(): number;
    /**
     * IndexedDB database name.
     *
     * Defaults to 'orbit-bucket', which can be overridden in the constructor.
     */
    get dbName(): string;
    /**
     * IndexedDB ObjectStore name.
     *
     * Defaults to 'settings', which can be overridden in the constructor.
     */
    get dbStoreName(): string;
    get isDBOpen(): boolean;
    openDB(): Promise<IDBDatabase>;
    closeDB(): void;
    reopenDB(): Promise<IDBDatabase>;
    createDB(db: IDBDatabase): void;
    /**
     * Migrate database.
     */
    migrateDB(db: IDBDatabase, event: IDBVersionChangeEvent): void;
    deleteDB(): Promise<void>;
    getItem(key: string): Promise<any>;
    setItem(key: string, value: unknown): Promise<void>;
    removeItem(key: string): Promise<void>;
    clear(): Promise<void>;
}