ng test frequently crashes with "Missing error handler on socket." #2781Description
Please provide us with the following information:
OS?
Windows 7, 8 or 10. Linux (which distribution). Mac OSX (Yosemite? El Capitan?)
OSX El Capitan
Versions.
Please run
ng --version. If there's nothing outputted, please run in a Terminal:node --versionand paste the result here:
angular-cli: 1.0.0-beta.17
node: 6.8.1
os: darwin x64
Repro steps.
Was this an app that wasn't created using the CLI? What change did you do on your code? etc.
This app was created using the CLI. When I am editing a .spec.ts file while the ng test server is running, it will frequently crash with the error pasted below.
I'm using VSCode and I have it set to autosave changes every few seconds. The crashes seem to occur when the test file has a typo or syntax error at the moment it saves.
The log given by the failure.
Missing error handler on socket.
TypeError: Cannot read property 'set' of null
at KarmaRemapIstanbul.onBrowserComplete (/Users/Max/projects/meal-planner/node_modules/karma-remap-istanbul/index.js:28:16)
at Server. (/Users/Max/projects/meal-planner/node_modules/karma/lib/events.js:13:22)
at emitTwo (events.js:111:20)
at Server.emit (events.js:191:7)
at Browser.onComplete (/Users/Max/projects/meal-planner/node_modules/karma/lib/browser.js:143:13)
at Socket. (/Users/Max/projects/meal-planner/node_modules/karma/lib/events.js:13:22)
at emitTwo (events.js:111:20)
at Socket.emit (events.js:191:7)
at Socket.onevent (/Users/Max/projects/meal-planner/node_modules/socket.io/lib/socket.js:335:8)
at Socket.onpacket (/Users/Max/projects/meal-planner/node_modules/socket.io/lib/socket.js:295:12)
at Client.ondecoded (/Users/Max/projects/meal-planner/node_modules/socket.io/lib/client.js:193:14)
at Decoder.Emitter.emit (/Users/Max/projects/meal-planner/node_modules/component-emitter/index.js:134:20)
at Decoder.add (/Users/Max/projects/meal-planner/node_modules/socket.io-parser/index.js:247:12)
at Client.ondata (/Users/Max/projects/meal-planner/node_modules/socket.io/lib/client.js:175:18)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Socket.onPacket (/Users/Max/projects/meal-planner/node_modules/engine.io/lib/socket.js:101:14)
at emitOne (events.js:96:13)
at WebSocket.emit (events.js:188:7)
at WebSocket.Transport.onPacket (/Users/Max/projects/meal-planner/node_modules/engine.io/lib/transport.js:104:8)
at WebSocket.Transport.onData (/Users/Max/projects/meal-planner/node_modules/engine.io/lib/transport.js:115:8)
at WebSocket.onData (/Users/Max/projects/meal-planner/node_modules/engine.io/lib/transports/websocket.js:76:30)
at emitTwo (events.js:106:13)
at WebSocket.emit (events.js:191:7)
at Receiver.ontext (/Users/Max/projects/meal-planner/node_modules/engine.io/node_modules/ws/lib/WebSocket.js:816:10)
at /Users/Max/projects/meal-planner/node_modules/engine.io/node_modules/ws/lib/Receiver.js:477:18
at /Users/Max/projects/meal-planner/node_modules/engine.io/node_modules/ws/lib/Receiver.js:361:7
at /Users/Max/projects/meal-planner/node_modules/engine.io/node_modules/ws/lib/PerMessageDeflate.js:247:5
at afterWrite (_stream_writable.js:387:3)
at onwrite (_stream_writable.js:378:7)
at WritableState.onwrite (_stream_writable.js:89:5)
at afterTransform (_stream_transform.js:79:3)
at TransformState.afterTransform (_stream_transform.js:54:12)
at Zlib.callback (zlib.js:639:5)
Chrome 53.0.2785 (Mac OS X 10.11.6) ERROR
Disconnectedundefined
Mention any other details that might be useful.
Thanks! We'll be in touch soon.