通知不会在延迟加载的模块中消失。(“ng2 toasty”或“angular2 notifications”等库)

我试图在我的应用程序(AngularCLI-4.4.6)的延迟加载模块中使用“ng2 toasty”或“angular2 notifications”之类的库。所有此类库的文档都表明我需要导入BrowserAnimationModule。但是当我将这个模块(BrowserAnimationModule)导入应用程序的根模块时,我遇到了一个问题——通知并没有消失。

当我寻找这个问题的解决方案时,我发现一些开发人员拥有 same problem . 但他们只是通过导入BrowserAnimationModule来解决这个问题。我无法直接在我的businessModule中导入BrowserAnimationModule,因为出现错误:“BrowserModule已经加载。”

如果能在这件事上得到任何帮助,我将不胜感激。

应用模块:

@NgModule({
  imports: [
    BrowserModule,
    HttpModule,
    JsonpModule,
    FormsModule,
    ReactiveFormsModule,
    BrowserAnimationsModule,
    CoreModule,    
    NgbModule.forRoot(),   
    appRouting
  ],
  declarations: [
    AppComponent
  ],
  providers: [
    NotificationsService    
  ],
 bootstrap: [AppComponent]
})

应用程序。路由。输电系统

import { NgModule, ModuleWithProviders } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';

export const appRoutes: Routes = [
    { path: '', redirectTo: 'home', pathMatch: 'full' },    
    { path: 'home', loadChildren: './home/home.module#HomeModule' },
    { path: 'business', loadChildren: './business/business.module#BusinessModule' }    
];
export const appRouting: ModuleWithProviders = RouterModule.forRoot(appRoutes);

业务模块

@NgModule({
  imports: [
    CommonModule,
    FormsModule, 
    ReactiveFormsModule,
    CoreModule,
    BusinessRouting
  ],
  declarations: [ 
    BusinessComponent, 
    HeaderComponent, 
    SidebarComponent, 
    AuthCompanyComponent, 
    LogoutCompanyComponent, 
    LoginCompanyComponent, 
    SignupCompanyComponent, 
    ForgotPasswordCompanyComponent, 
    BidsComponent, 
    ChangePasswordComponent
   ],
  providers: [
    BusinessAuthGuardService,
    DataService,
    BidService,
    NotificationsService
  ]
})
export class BusinessModule { }

更新

当我从延迟加载模块(BusinessModule)的基本组件(BusinessComponent)调用通知时,通知工作正常。但在我的延迟加载模块中,我有一个路由器出口,用于加载属于BusinessModule的其他组件。其中之一是BidsComponent。当我尝试从这个组件调用通知时-它不起作用。。。

商业路由器。输电系统

    imports: [
        RouterModule.forChild([
            {
              path: '',
              component: BusinessComponent,
              canActivate: [ BusinessAuthGuardService ],               
              children: [
                {
                  path: '',
                  redirectTo: 'bids',
                  pathMatch: 'full'
                },
                {
                  path: 'bids',
                  component: BidsComponent
                }
              ]
            }
        ])
    ],
    exports: [
        RouterModule
    ]
})
export class BusinessRouting {}