关于javascript:Node-EventEmitter事件队列

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var proxy = new events.EventEmitter()
var status = "ready"
var select = function(callback) {proxy.once("selected", callback)
  if (status === "ready") {
    status = "pending"
    setTimeout(() => {proxy.emit("selected", results)
      status = "ready"
    }, 2000)
  }
}

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