Class ServiceWithDep

packages/core/test/di/r3_injector_spec.ts:69–79

  const UNDEFINED_VALUE = new InjectionToken<undefined>('UNDEFINED_VALUE');

  class ServiceWithDep {
    constructor(readonly service: Service) {}

    static ɵprov = ɵɵdefineInjectable({
      token: ServiceWithDep,
      providedIn: null,
      // ChildService is derived from ServiceWithDep, so the factory function here must do the right
      // thing and create an instance of the requested type if one is given.
      factory: (t?: any) => new (t || ServiceWithDep)(ɵɵinject(Service)),
    });
  }

  class ServiceWithOptionalDep {
    constructor(@Optional() readonly service: OptionalService | null) {}