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javascriptangularangular17

How to provide pipes in services in Angular 17 with no NgModule

I am trying to use titleCasePipe in my angular service, I don't have NgModule and using the new ApplicationConfig way.

@Injectable({
  providedIn: 'root'
})
export class NameGeneratorService {
  // private titleCasePipe = inject(TitleCasePipe)
  constructor(private titleCasePipe: TitleCasePipe) { }

I tied both ways for injection ^^

I keep getting NullInjectorError: No provider for _TitleCasePipe! error.

I tried this, still same error

export const appConfig: ApplicationConfig = {
  providers: [
    provideRouter(routes),
    provideAnimations(),
    importProvidersFrom(TitleCasePipe),
  ]
};
Solution

  • Add the pipe to the providers :

      providers: [
    provideRouter(routes),
    provideAnimations(),
    TitleCasePipe,
  ]

    But honnestly, this is a bad practice. Pipes are only meant to be used in templates.

    If you want to inject such feature, it should be trough a service.