event-bus.ts

/**
 * 简易的发布订阅模式
 * 主要用于跨组件通信
 */
class EventBus {
  static list: { [key: string]: Array<Function> } = {};

  // 订阅
  static listen(name: EventTypeName, fn: Function) {
    this.list[name] = this.list[name] || [];
    this.list[name].push(fn);
  }

  // 发布
  static notify(name: EventTypeName, data?: any) {
    if (this.list[name]) {
      this.list[name].forEach((fn: Function) => {
        fn(data);
      });
    }
  }

  // 取消订阅
  static unListen(name: EventTypeName) {
    if (this.list[name]) {
      // delete this.list[name];
      Reflect.deleteProperty(this.list, name);
    }
  }

   // 只使用一次
    // static once(name: EventTypeName, fn: Function) {
    //  const _this = this
    //  const wrapper = function () {
    //    fn.apply(this, [arguments])
     //   _this.unListen(name, wrapper)
     // }
     // this.notify(eventName, wrapper)
   // }
}
export default EventBus;

/**
 * 用于规范统一命名，减少名称不一致导致的错误
 */
export enum EventTypeName {
  // 打开报告
  OPEN_REPORT,
  // 打开
  OPEN,
}

  EventBus.listen(EventTypeName.OPEN_REPORT, (data: any) => {
    console.log('data :>> ', data);
    let lti48Obj: any = {
      1: "inspection", // 检验
      2: "microorganism", //微生物
      99: "check", // 检查
    };
    state.reportId = data.reportId; // 报告id
    state.defaultValue = lti48Obj[data.lti48];
  });
EventBus.notify(EventTypeName.OPEN_REPORT, row)
或者
EventBus.listen(EventTypeName.OPEN_REPORT, (data: Function) => {
  data(row)
});
EventBus.notify(EventTypeName.OPEN_REPORT, (data: any) => {
    let lti48Obj: any = {
      1: "inspection", // 检验
      2: "microorganism", //微生物
      99: "check", // 检查
    };
    state.reportId = data.reportId
    state.defaultValue = lti48Obj[data.lti48]
  });

//销毁EventBus
 onUnmounted(() => {
   EventBus.unListen(EventTypeName.OPEN_REPORT);
 });