import { HttpClient, HttpErrorResponse } from "@angular/common/http";
import { Observable } from "rxjs/Rx";
export interface RequestEvent {
    controller: string;
    fileName?: string;
    method?: string;
    params?: any;
    type?: string;
}
export declare class HttpHandler {
    private http;
    static SERVER_URL_BASE: string;
    static SESSION_TIMEOUT: boolean;
    static getUrl(config: RequestEvent): string;
    static addMessage(errorCode: string): void;
    constructor(http: HttpClient);
    handleError(res: HttpErrorResponse): Observable<object>;
    request(config: RequestEvent): Observable<object>;
    requestToPromise(config: RequestEvent): Promise<object>;
    upload(config: RequestEvent): Observable<object>;
    interceptors(): void;
    requestProgress(config: RequestEvent): void;
    private objectToData(o, prefix?, form?);
    private serialize(o);
    private objectToFormData(o, prefix?, form?);
}