import { HttpResponse } from '@angular/common/http';
import { Observable } from 'rxjs';
import { HttpRequestState } from './model';
export declare function httpRequestStates<T>(): (source: Observable<HttpResponse<T> | T>) => Observable<HttpRequestState<T>>;
/**
 *
 * @param mapResponse a function to map from HttpResponse<T> to K
 * @deprecated use rxjs's map() operator to transform the response prior to using httpRequestStates() instead.
 */
export declare function httpRequestStates<T, K>(mapResponse: (result: HttpResponse<T>) => K): (source: Observable<HttpResponse<T>>) => Observable<HttpRequestState<K>>;
/**
 *
 * @param mapResponse a function to map from T to K
 * @deprecated use rxjs's map() operator to transform the value prior to using httpRequestStates() instead.
 */
export declare function httpRequestStates<T, K>(mapResponse: (result: T) => K): (source: Observable<T>) => Observable<HttpRequestState<K>>;