HarmonyOS 如何定一个类型

示例参考如下：

export enum EventType {
  'jump',
  'quit',
  'share',
  'check',
  'clear',
  'recommend'
}

@Entry
@Component
struct Index {
  @State type: EventType = EventType.jump //初始化赋值

  build() {
    Column() {
      Button('Test1').onClick(() => {
        this.type = EventType.quit //业务逻辑赋值
        console.log('', this.type)
        if (EventType.share == this.type as number) {
          console.log('true')
        } else {
          console.log('false')
        }
      })
      Button('Test2')
        .visibility(this.type == EventType.jump || this.type == EventType.recommend ? Visibility.Visible :
        Visibility.None)
    }
  }
}