import { HttpHandler, HttpInterceptor, HttpRequest } from "@angular/common/http";
import { Observable } from "rxjs";
import { BzProgressBarService } from "./http-progress-bar.service";
export declare class BzHttpProgressBarInterceptor implements HttpInterceptor {
    private httpProgressBarService;
    private _requests;
    constructor(httpProgressBarService: BzProgressBarService);
    private _removeRequests;
    /**
     * Remove request from list.
     *
     * @author Federico Gambardella<fedega86@libero.it>
     * @param {HttpRequest<any>} reqInput
     * @return {void}
     */
    private _removeRequest;
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<any>;
}