Question

当我运行vue＆n; npm run dev时，我收到了这个错误：

(node:10871) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: Exited with code 3

如果我使用Node 6.11.3在我的计算机上运行，它可以正常工作但是当我使用Node 6.11.3或最新节点9.something

部署到AWS EC2时失败

如果我使用最新节点运行，我收到一条详细错误消息：

(node:10429) UnhandledPromiseRejectionWarning: Error: Exited with code 3
    at ChildProcess.cp.once.code (/home/ubuntu/loan-vue-frontend/node_modules/opn/index.js:84:13)
    at Object.onceWrapper (events.js:272:13)
    at ChildProcess.emit (events.js:180:13)
    at maybeClose (internal/child_process.js:936:16)
    at Socket.stream.socket.on (internal/child_process.js:353:11)
    at Socket.emit (events.js:180:13)
    at Pipe._handle.close [as _onclose] (net.js:541:12)
(node:10429) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:10429) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

我尝试过从头开始安装一个新项目，但它确实有效。

然后我比较代码，我发现我有这个代码（在一个名为＆＃39; build / dev-server.js＆＃39;：

的文件中

var _resolve
var readyPromise = new Promise(resolve => {
  _resolve = resolve
})

console.log('> Starting dev server...')
devMiddleware.waitUntilValid(() => {
  console.log('> Listening at ' + uri + '\n')
  // when env is testing, don't need open it
  if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {
    opn(uri)
  }
  _resolve()
})

var server = app.listen(port)

module.exports = {
  ready: readyPromise,
  close: () => {
    server.close()
  }
}

在我看来，readyPromise是麻烦的原因。但是调用dev-server.js的唯一地方是package.json：

  "scripts": {
    "dev": "node build/dev-server.js",
  }

我怀疑

准备好了：readyPromise，

是不对的，因为＆＃39;准备好＆＃39;可能没有挡块。但我不知道如果能够解决这个问题的话。

有什么想法吗？

运行Vue dev，让我承诺拒绝

0 个答案: