直到今天我开始监视咕噜咕噜的时候，我才开始这样做。最终由

watch: {
  options: {
    maxListeners: 99,
    livereload: true
  },
}

烦人的信息消失了。

直到今天我开始监视咕噜咕噜的时候，我才开始这样做。最终由

watch: {
  options: {
    maxListeners: 99,
    livereload: true
  },
}

烦人的信息消失了。

把它放在你的server.js(或任何包含你的主Node.js应用程序)的第一行:

需要.EventEmitter.prototype(“事件”)。_maxListeners = 0;

错误就消失了:)

You said you are using process.on('uncaughtException', callback); Where are you executing this statement? Is it within the callback passed to http.createServer?If yes, different copy of the same callback will get attached to the uncaughtException event upon each new request, because the function (req, res) { ... } gets executed everytime a new request comes in and so will the statement process.on('uncaughtException', callback);Note that the process object is global to all your requests and adding listeners to its event everytime a new request comes in will not make any sense. You might not want such kind of behaviour. In case you want to attach a new listener for each new request, you should remove all previous listeners attached to the event as they no longer would be required using: process.removeAllListeners('uncaughtException');

节点版本号:v11.10.1

来自堆栈跟踪的警告消息:

process.on('warning', e => console.warn(e.stack));

(node:17905) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 wakeup listeners added. Use emitter.setMaxListeners() to increase limit
MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 wakeup listeners added. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:255:17)
    at Connection.addListener (events.js:271:10)
    at Connection.Readable.on (_stream_readable.js:826:35)
    at Connection.once (events.js:300:8)
    at Connection._send (/var/www/html/fleet-node-api/node_modules/http2/lib/protocol/connection.js:355:10)
    at processImmediate (timers.js:637:19)
    at process.topLevelDomainCallback (domain.js:126:23)

在搜索github问题，文档和创建类似的事件发射器内存泄漏后，由于node-apn模块用于iOS推送通知，观察到此问题。

这就解决了问题:

您应该为每个进程只创建一个Provider 您拥有的证书/密钥对。您不需要创建一个新的 每个通知的提供者。如果你只是发送通知 一个应用程序，那么就不需要一个以上的提供商。 如果你经常在你的应用程序中创建Provider实例，make 当你使用完每个提供者时，一定要调用provider .shutdown() 释放其资源和内存。

每次发送通知时，我都在创建提供者对象，并期望gc将其清除。

在我的例子中，它是child.stderr.pipe(process.stderr)，当我启动10个(或左右)child实例时，它被调用。因此，任何导致在LOOP中将事件处理程序附加到同一个EventEmitter对象的事情都会导致nodejs抛出这个错误。