import { Key } from 'interface-datastore';
import { KeyTransformDatastore } from './keytransform.ts';
import type { AbortOptions } from 'abort-error';
import type { Datastore, Query, Pair, KeyQuery } from 'interface-datastore';
/**
 * Wraps a given datastore into a keytransform which
 * makes a given prefix transparent.
 *
 * For example, if the prefix is `new Key(/hello)` a call
 * to `store.put(new Key('/world'), mydata)` would store the data under
 * `/hello/world`.
 */
export declare class NamespaceDatastore extends KeyTransformDatastore {
    private readonly iChild;
    private readonly iKey;
    constructor(child: Datastore, prefix: Key);
    query(q: Query, options?: AbortOptions): Generator<Pair> | AsyncGenerator<Pair>;
    queryKeys(q: KeyQuery, options?: AbortOptions): Generator<Key> | AsyncGenerator<Key>;
}
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