HarmonyOS 为什么构造函数中进行了赋值，还提示错误？

为什么构造函数中进行了赋值，还提示错误？

@Component
export struct NodePageView {
  manager: NodePageViewManager//这里报错：Property 'manager' has no initializer and is not definitely assigned in the constructor. <ArkTSCheck>
  pageData: NodePageData
  constructor(pageData: NodePageData, manager: NodePageViewManager) {
    super()
    this.manager = manager
    this.pageData = pageData
  }
}