import { Observable } from 'rxjs/internal/Observable';
export declare const DEBOUNCE = 500;
/**
 * `useRxDebounce`
 *
 * Applies debounce to a given observable function.
 * Can be used in Autosuggest.
 *
 * @param func$
 * @param next
 */
export declare function useRxDebounce<In, Out>(func$: (input: In) => Observable<Out>, next?: (val: Out) => void, debounce?: number): [Out | undefined, (input: In) => void];