import { InjectionToken } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { NotificationService } from './notification.service';
import { Router } from '@angular/router';
import { Observable } from 'rxjs';
import { ApiResponse } from '../interfaces/api-response';
export declare const ENVIRONMENT: InjectionToken<{
    APIBaseUrl: string;
}>;
export declare class HttpService {
    protected httpClient: HttpClient;
    protected notificationService: NotificationService;
    protected router: Router;
    protected environment: any;
    constructor(httpClient: HttpClient, notificationService: NotificationService, router: Router, environment: any);
    get<T = ApiResponse>(getUrl: string): Observable<T>;
    update<T = ApiResponse>(updateUrl: string, value: {}): Observable<T>;
    insert<T = ApiResponse>(insertUrl: string, value: {}): Observable<T>;
    delete<T = ApiResponse>(deleteUrl: string, id: string): Observable<T>;
    HandleError(error: any): void;
}