Angular cancel http request

// http-cancel.service.ts
// use this service as DI in component
import {Subject} from 'rxjs';
import {Injectable} from '@angular/core';

@Injectable()
export class HttpCancelService{
  private cancelPendingRequestSubject=new Subject<void>()
  cancelPendingRequest$ = this.cancelPendingRequestSubject.asObservable();

  cancelPendingRequest(){
    this.cancelPendingRequestSubject.next();
  }
}

==============================================================
//http-cancel-interceptor.service.ts
import {HttpEvent, HttpHandler, HttpInterceptor, HttpRequest} from '@angular/common/http';
import {Observable, takeUntil} from 'rxjs';
import {Injectable} from '@angular/core';
import {HttpCancelService} from './http-cancel.service';
import {tap} from 'rxjs/operators';

@Injectable()
export class CancelInterceptor implements HttpInterceptor{
  constructor(private cancelService: HttpCancelService) {
  }

  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(req).pipe(takeUntil(this.cancelService.cancelPendingRequest$
      .pipe(tap(()=> {throw new Error('Request is canceled')}))));
  }
}
==============================================================
 // app.module.ts
  import {HTTP_INTERCEPTORS} from '@angular/common/http';
  ...
  providers: [
    ...
    {provide: HTTP_INTERCEPTORS, useClass: CancelInterceptor, multi: true}
    ...
  ],

Similar codes

2 votes289 views1 answer
Formgroup addcontrol
TypeScript
0 vote341 views3 answers
How to print brackets characters in c#
TypeScript
0 vote262 views1 answer
Facts about poutine
TypeScript
2 votes266 views2 answers
Typescript convert numer to string
TypeScript
4 votes282 views2 answers
Magento 2 enable template hints command line
TypeScript
0 vote275 views5 answers
Rosa
TypeScript
0 vote271 views1 answer
How to find uncommon elements in two lists in python
TypeScript
2 votes293 views2 answers
Typeorm find orderby
TypeScript
0 vote235 views1 answer
Amcharts angular
TypeScript
2 votes287 views3 answers
Print array elements with space c++
TypeScript