import { Observable } from 'rxjs';
/**
 *
 * @param {...any} keywords
 * @param include
 * @param exclude
 */
export declare function onKeywordsTouch(include: (key: string) => boolean, exclude?: (key: string) => boolean): Observable<void>;
/**
 *
 * @param {...any} keywords
 */
export declare function touchKeywords(...keywords: string[]): void;