update: add return values for the interceptors

npm/ng-packs/packages/core/src/lib/interceptors/api.interceptor.ts

@@ -1,6 +1,13 @@
-import { HttpHandler, HttpHeaders, HttpInterceptor, HttpRequest } from '@angular/common/http';
+import {
+  HttpHandler,
+  HttpHeaders,
+  HttpInterceptor,
+  HttpRequest,
+  HttpEvent,
+} from '@angular/common/http';
 import { Injectable } from '@angular/core';
 import { finalize } from 'rxjs/operators';
+import { Observable } from 'rxjs';
 import { HttpWaitService } from '../services';
 
 @Injectable({
@@ -13,7 +20,7 @@ export class ApiInterceptor implements IApiInterceptor {
     return existingHeaders || new HttpHeaders();
   }
 
-  intercept(request: HttpRequest<any>, next: HttpHandler) {
+  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
     this.httpWaitService.addRequest(request);
     return next.handle(request).pipe(finalize(() => this.httpWaitService.deleteRequest(request)));
   }

npm/ng-packs/packages/oauth/src/lib/interceptors/api.interceptor.ts

@@ -1,7 +1,8 @@
-import { HttpHandler, HttpHeaders, HttpRequest } from '@angular/common/http';
+import { HttpEvent, HttpHandler, HttpHeaders, HttpRequest } from '@angular/common/http';
 import { Inject, Injectable } from '@angular/core';
 import { OAuthService } from 'angular-oauth2-oidc';
 import { finalize } from 'rxjs/operators';
+import { Observable } from 'rxjs';
 import {
   HttpWaitService,
   IApiInterceptor,
@@ -21,7 +22,7 @@ export class OAuthApiInterceptor implements IApiInterceptor {
     @Inject(TENANT_KEY) private tenantKey: string,
   ) {}
 
-  intercept(request: HttpRequest<any>, next: HttpHandler) {
+  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
     this.httpWaitService.addRequest(request);
     const isExternalRequest = request.context?.get(IS_EXTERNAL_REQUEST);
     const newRequest = isExternalRequest