该应用程序是用node.js编写的，并使用socket.io进行实时请求。
应用程序运行良好，但今天我遇到了这个无限错误:
2015-10-08T08:31:37.477080+00:00 app[web.1]: Prevented node from exit...
2015-10-08T08:31:37.477495+00:00 app[web.1]: TypeError: Cannot read property 'length' of undefined
2015-10-08T08:31:37.477496+00:00 app[web.1]: at onwriteDrain (_stream_writable.js:354:12)
2015-10-08T08:31:37.477497+00:00 app[web.1]: at afterWrite (_stream_writable.js:344:5)
2015-10-08T08:31:37.477498+00:00 app[web.1]: at wrapped (/app/node_modules/newrelic/lib/transaction/tracer/index.js:157:28)
2015-10-08T08:31:37.477498+00:00 app[web.1]: at doNTCallback0 (node.js:408:9)
2015-10-08T08:31:37.477499+00:00 app[web.1]: at Immediate._tickCallback [as _onImmediate] (node.js:337:13)
2015-10-08T08:31:37.477500+00:00 app[web.1]: at processImmediate [as _immediateCallback] (timers.js:374:17)
2015-10-08T08:31:37.477873+00:00 app[web.1]: TypeError: Cannot read property 'length' of undefined
2015-10-08T08:31:37.477503+00:00 app[web.1]: Prevented node from exit...
2015-10-08T08:31:37.477875+00:00 app[web.1]: at onwriteDrain (_stream_writable.js:354:12)
2015-10-08T08:31:37.477875+00:00 app[web.1]: at afterWrite (_stream_writable.js:344:5)
2015-10-08T08:31:37.477876+00:00 app[web.1]: at wrapped (/app/node_modules/newrelic/lib/transaction/tracer/index.js:157:28)
2015-10-08T08:31:37.477877+00:00 app[web.1]: at Immediate._tickCallback [as _onImmediate] (node.js:337:13)
2015-10-08T08:31:37.477877+00:00 app[web.1]: at doNTCallback0 (node.js:408:9)
2015-10-08T08:31:37.477878+00:00 app[web.1]: at processImmediate [as _immediateCallback] (timers.js:374:17)
2015-10-08T08:31:37.477900+00:00 app[web.1]: Prevented node from exit...
谁能帮忙!
我会很感激，谢谢。
最佳答案
问题是来自 npm 的“request”包，它与 Node.js 的最新版本不兼容。
所以我在 package.js 中显式添加版本
"engines": {
"node": "0.10.x"
},
现在一切正常。 谢谢
关于javascript - Heroku 部署 Node.js 时出错，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33011086/