Function attachInjectFlag

packages/core/src/di/injector_compatibility.ts:374–378

(decorator: any, flag: InternalInjectFlags | DecoratorFlags)

 * @param flag InjectFlag that should be applied.
 */
export function attachInjectFlag(decorator: any, flag: InternalInjectFlags | DecoratorFlags): any {
  decorator[DI_DECORATOR_FLAG] = flag;
  decorator.prototype[DI_DECORATOR_FLAG] = flag;
  return decorator;
}

/**
 * Reads monkey-patched property that contains InjectFlag attached to a decorator.