import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
import { HttpVisibilityInterceptorError, HttpVisibilityInterceptorHttpEvent } from './types';
import * as i0 from "@angular/core";
export declare class HttpVisibilityInterceptorService implements HttpInterceptor {
    private readonly _httpEvents$;
    private readonly _errors$;
    private readonly interceptorFn;
    constructor();
    intercept(req: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>>;
    observeHttpEvents(): Observable<HttpVisibilityInterceptorHttpEvent<unknown>>;
    observeErrors(): Observable<HttpVisibilityInterceptorError>;
    static ɵfac: i0.ɵɵFactoryDeclaration<HttpVisibilityInterceptorService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HttpVisibilityInterceptorService>;
}