code: function preR3InjectableCompile(injectableType, options) {
      if (options && options.providedIn !== undefined && injectableType.ngInjectableDef === undefined) {
          injectableType.ngInjectableDef = defineInjectable({
              providedIn: options.providedIn,
              factory: convertInjectableProviderToFactory(injectableType, options),
          });
      }
  }
docs: Supports @Injectable() in JIT mode for Render2.