import { Injector } from '@angular/core';
import { Observable } from 'rxjs';
import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
export declare class ErrorHandlerInterceptor implements HttpInterceptor {
    private injector;
    private lastMessages;
    constructor(injector: Injector);
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;
    private handle;
    private isDuplicate;
    private parseErrorMessage;
    private getHeaderError;
}