通过emitter实现worker间线程通讯

// worker1 emitter.emit 发送'eventId:2'的监听串发送消息 
let eventData: emitter.EventData = { 
  data: { 
    "id": 2, 
    "content": "worker is closing", 
  } 
}; 
emitter.emit("eventId:2", eventData); 
  
// worker2 监听'eventId:2'事件，并发送新的eventId:1的监听事件 
emitter.on('eventId:2', (eventData:emitter.EventData) => { 
  let obj = eventData.data as  Record<string,String> 
  console.info('callback 2, content:' + obj["content"]+', id='+ obj["id"]); 
  emitter.emit('eventId:1', createWorker1) 
});