import { BaseDatastore } from './base.ts';
import type { AbortOptions } from 'abort-error';
import type { Batch, Datastore, Key, KeyQuery, Pair, Query } from 'interface-datastore';
/**
 * A datastore that can combine multiple stores. Puts and deletes
 * will write through to all datastores. Has and get will
 * try each store sequentially. Query will always try the
 * last one first.
 *
 */
export declare class TieredDatastore extends BaseDatastore {
    private readonly stores;
    constructor(stores: Datastore[]);
    put(key: Key, value: Uint8Array, options?: AbortOptions): Promise<Key>;
    get(key: Key, options?: AbortOptions): Promise<Uint8Array>;
    has(key: Key, options?: AbortOptions): Promise<boolean>;
    delete(key: Key, options?: AbortOptions): Promise<void>;
    putMany(source: Iterable<Pair> | AsyncIterable<Pair>, options?: AbortOptions): Generator<Key> | AsyncGenerator<Key>;
    deleteMany(source: Iterable<Key> | AsyncIterable<Key>, options?: AbortOptions): Generator<Key> | AsyncGenerator<Key>;
    batch(): Batch;
    query(q: Query, options?: AbortOptions): Generator<Pair> | AsyncGenerator<Pair>;
    queryKeys(q: KeyQuery, options?: AbortOptions): Generator<Key> | AsyncGenerator<Key>;
}
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