import type { IDBPDatabase, IDBPObjectStore } from 'idb';
import type { Value } from '../interfaces/common.js';
import type { AztecAsyncSingleton } from '../interfaces/singleton.js';
import type { AztecIDBSchema } from './store.js';
/**
 * Stores a single value in IndexedDB.
 */
export declare class IndexedDBAztecSingleton<T extends Value> implements AztecAsyncSingleton<T> {
    #private;
    constructor(rootDB: IDBPDatabase<AztecIDBSchema>, name: string);
    set db(db: IDBPObjectStore<AztecIDBSchema, ['data'], 'data', 'readwrite'> | undefined);
    get db(): IDBPObjectStore<AztecIDBSchema, ['data'], 'data', 'readwrite'>;
    getAsync(): Promise<T | undefined>;
    set(val: T): Promise<boolean>;
    delete(): Promise<boolean>;
}
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