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import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS, } from '@angular/common/http';
import { MiniProfilerInterceptor } from './mini-profiler-http';
providers: [
{ provide: HTTP_INTERCEPTORS, useClass: MiniProfilerInterceptor, multi: true },
export class AppModule { }
import { Injectable } from '@angular/core';
import { HttpInterceptor, HttpHandler, HttpRequest, HttpEvent, HttpResponse, HttpHeaders }
from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/do';
declare var MiniProfiler: any;
export class MiniProfilerInterceptor implements HttpInterceptor {
req: HttpRequest<any>,
next: HttpHandler
): Observable<HttpEvent<any>> {
return next.handle(req).do(evt => {
if (evt instanceof HttpResponse) {
if (typeof MiniProfiler !== 'undefined' && evt && evt.headers) {
private makeMiniProfilerRequests(headers: HttpHeaders) {
const miniProfilerHeaders = headers.getAll('x-miniprofiler-ids');
if (!miniProfilerHeaders) {
miniProfilerHeaders.forEach(miniProfilerIdHeaderValue => {
const ids = JSON.parse(miniProfilerIdHeaderValue) as string[];
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What is declare var MiniProfiler: any; ?

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davmszd commented Dec 19, 2019

I am trying to use your code

with DotNetCore 2.2 and Angular 8

I enable CORS like below in my startup class

services.AddCors(options => options.AddPolicy("Cors", builder =>

there is some thing strange in the response

when I console.log(r.headers) at line 22

unfortunately there is no x-miniprofiler-ids in the header object

but in fiddler and chrome network tab the x-miniprofiler-ids do exists in the response object

so UI does not show the miniprofiler detail notifier

is there any thing extra which i have to do ???

is there any specila config for dot net core or angular or httpclient ???

is your code compelete and well tested ????

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x3weird commented Jan 5, 2021

Hi, thanks for this gist, I am implementing the same thing but I was wondering do I need to install mini profiler npm package?

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