lack of service instance in app.module file

Question

I need to use a service to configure a module inside app.module, just like that:

imports: [
    CommonModule,
    BrowserModule,
    BrowserAnimationsModule,
    HttpClientModule,
    AppRoutingModule,
    targetModule.forRoot({
      'var1': environmentService.var1,
      
    }),
    anotherModule,
  ],

how to create an instance of EnvironmentService in this case? EnvironmentService is "providedIn: root" service

@Injectable({
  providedIn: 'root',
})

Answer 1

use inject from @angular/core module

    import {NgModule, inject} from '@angular/core';
    
    const injectedVal = inject(environmentService).var1;

    imports: [
      CommonModule,
      BrowserModule,
      BrowserAnimationsModule,
      HttpClientModule,
      AppRoutingModule,
      targetModule.forRoot({
        'var1': injectedVal,
      
      }),
      anotherModule,
   ],