import { Observable } from 'rxjs';
export declare class NbSearchService {
    private searchSubmittings$;
    private searchActivations$;
    private searchDeactivations$;
    activateSearch(searchType: string, tag?: string): void;
    deactivateSearch(searchType: string, tag?: string): void;
    submitSearch(term: string, tag?: string): void;
    onSearchActivate(): Observable<{
        searchType: string;
        tag?: string;
    }>;
    onSearchDeactivate(): Observable<{
        searchType: string;
        tag?: string;
    }>;
    onSearchSubmit(): Observable<{
        term: string;
        tag?: string;
    }>;
}