import type { PayloadAction } from '@reduxjs/toolkit';
import type { CoreEngine } from '../../app/engine.js';
/**
 * The search hub action creators.
 *
 * @group Actions
 * @category SearchHub
 */
export interface SearchHubActionCreators {
    /**
     * Sets the search hub.
     *
     * @param searchHub - The new search hub (may be empty).
     * @returns A dispatchable action.
     */
    setSearchHub(searchHub: string): PayloadAction<string>;
}
/**
 * Loads the `searchHub` reducer and returns possible action creators.
 *
 * @param engine - The headless engine.
 * @returns An object holding the action creators.
 *
 * @group Actions
 * @category SearchHub
 */
export declare function loadSearchHubActions(engine: CoreEngine): SearchHubActionCreators;