How to update requestoptions and requestoptionsargs in this code

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Typescript

Hi,

I am updating angular 4 to 5 in my app
How to update below code?

import 'rxjs/add/observable/throw';
import 'rxjs/add/operator/catch';

import { Injectable, Injector } from '@angular/core';
import { HttpClient, HttpParams, HttpXhrBackend } from '@angular/common/http';

//import { Headers,  Request, RequestOptions, RequestOptionsArgs, Response, HttpXHRBackend } from '@angular/common/http';
import { Router } from '@angular/router';
import { Observable } from 'rxjs/Observable';

import { WindowsAuthorizeService } from './windowsAuthorize.service';

@Injectable()
    export class ExtendedHttpService extends HttpClient {
    private router;         
    private _authService: WindowsAuthorizeService;
    constructor(backend: HttpXhrBackend, defaultOptions: RequestOptions, private injector: Injector) {
        super(backend, defaultOptions);
        // this._authService = this.injector.get(WindowsAuthorizeService);
    }

    request(url: string | Request, options?: RequestOptionsArgs): Observable<Response> {

     
        return super.request(url, options).catch(this.catchErrors(url, options, 0));
    }

    private catchErrors(url: string | Request, options?: RequestOptionsArgs, tryNumber?: number) {

        return (res: Response) => {
            if (this.router == null) {
                this.router = this.injector.get(Router);
            }
            if (this._authService == null) {
                this._authService = this.injector.get(WindowsAuthorizeService);
            }
            if (tryNumber < 10) {
              
          }
            return Observable.throw(res);
        };
    }

   

    private setHeaders(objectToSetHeadersTo: Request | RequestOptionsArgs) {

        objectToSetHeadersTo.withCredentials = true;

    }
}

What I have tried:

Tried HttpRequest object in place of RequestOptions