kfmc_website/src/app/shared/token-interceptor.service.ts

import { AuthServiceService } from './auth-service.service';
import { Injectable } from '@angular/core';
import {HttpRequest, HttpHandler, HttpEvent, HttpInterceptor } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';

@Injectable({
  providedIn: 'root'
})
export class TokenInterceptorService {

  constructor(private auth: AuthServiceService) {}
  
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    
    request = request.clone({
      setHeaders: {
        Authorization: `Bearer ${this.auth.getToken()}`
      }
    });

    return next.handle(request);
    console.log(next.handle(request));
  }

}