import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class HttpData {
    private http;
    token: any;
    host_name: any;
    voucher: any;
    errorMsg: string;
    constructor(http: HttpClient);
    jsonToQueryString(json: any): string;
    handleError(error: HttpErrorResponse): Observable<never>;
    getAll(api_path: any): Observable<any[]>;
    private getServerErrorMessage;
    get(api_path: string, SkipInter?: string): Observable<any>;
    post(params: any, api_path: string, SkipInter?: string): Observable<any>;
    delete(id: any, api_path: string): Observable<any>;
    put(params: any, id: any, api_path: any): Observable<any>;
    static ɵfac: i0.ɵɵFactoryDeclaration<HttpData, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HttpData>;
}