HttpClient can't parse empty response

Question

I have an interceptor that adds a token in the headers. However, if I use it after a POST request my Observer in the subscription is not triggered.

Interceptor:

Answer 1

My workaround is an HttpInterceptor that catches errors when the status code is 200 and returns an HttpResponse with a null body instead (just like HttpClient does with 204 Not Content responses):

@Injectable()
export class EmptyResponseBodyErrorInterceptor implements HttpInterceptor {
intercept(req: HttpRequest, next: HttpHandler): Observable> {
return next.handle(req)
  .catch((err: HttpErrorResponse) => {
    if (err.status == 200) {
      const res = new HttpResponse({
        body: null,
        headers: err.headers,
        status: err.status,
        statusText: err.statusText,
        url: err.url
      });
      return Observable.of(res);
    } else {
      return Observable.throw(err);
    }
  });
 }
}