Class Service

packages/core/test/render3/reactivity_spec.ts:382–392

      const source = signal('');

      @Injectable()
      class Service {
        data = '';
        cdr = inject(ChangeDetectorRef);
        effectRef = effect(() => {
          if (this.data !== source()) {
            this.data = source();
            this.cdr.markForCheck();
          }
        });
      }

      @Component({
        changeDetection: ChangeDetectionStrategy.OnPush,