import { ActorRdfJoinEntriesSort } from '@comunica/bus-rdf-join-entries-sort';
import type { IActionRdfJoinEntriesSort, IActorRdfJoinEntriesSortArgs, IActorRdfJoinEntriesSortOutput, IActorRdfJoinEntriesSortTest } from '@comunica/bus-rdf-join-entries-sort';
import type { TestResult } from '@comunica/core';
/**
 * An actor that sorts join entries by increasing cardinality.
 */
export declare class ActorRdfJoinEntriesSortCardinality extends ActorRdfJoinEntriesSort {
    constructor(args: IActorRdfJoinEntriesSortArgs);
    test(action: IActionRdfJoinEntriesSort): Promise<TestResult<IActorRdfJoinEntriesSortTest>>;
    run(action: IActionRdfJoinEntriesSort): Promise<IActorRdfJoinEntriesSortOutput>;
}