我尝试更改browserxhr的导入,但是仍然出现错误,表明browserxhr没有导出的成员
import { BrowserXhr } from '@angular/common/http';
import { NgProgress } from './progress.service';
export declare class NgProgressBrowserXhr extends BrowserXhr
{
private ngProgress; private currentRequest;
constructor(ngProgress: NgProgress);
build(): any;
private done();
}