/@Injectable and providedIn (Service Scope)

6.3 @Injectable and providedIn (service scope)

@Injectable({ providedIn: 'root' }) makes services available app-wide.

@Injectable({
  providedIn: "root", // singleton for the whole app
})
export class LoggerService {}

Other scopes:

• 'any' → each lazy-loaded module gets its own instance
• 'platform' → shared across applications in the same platform

Note: In Angular 21, providedIn works with standalone services without NgModules.