ERROR [karma]: { inspect: [Function: inspect] }

[charafsalmi]

Hi,

On an angular project, the test stops with only this error.

17 02 2022 10:33:56.251:ERROR [karma]: { inspect: [Function: inspect] }
17 02 2022 10:33:56.252:DEBUG [launcher]: Disconnecting all browsers
17 02 2022 10:33:56.541:DEBUG [launcher]: Process Chrome exited with code 0
17 02 2022 10:33:56.541:DEBUG [temp-dir]: Cleaning temp dir C:\Users\---\AppData\Local\Temp\karma-11132084
17 02 2022 10:33:56.658:DEBUG [launcher]: Finished all browsers

Using "karma": "^2.0.2", as a devDependency on this angular project. No single run is set to true, as well as log level set to debug. On a windows 10 environment. NG Code 9.1.12, Jasmine ^2.8.17 .

Is there a way to have more verbosity ?

Thank you.

[charafsalmi]

After a huge investigation, I ended up locating the issue as coming from karma/lib/server.js line 355 on my version :

    processWrapper.on('uncaughtException', (error) => {
      this.log.error(error)
    })

No explicit log or trace here, unfortunately.

On master, it points to a more verbose code :

karma/lib/server.js

Line 405 in ab4b328

this.log.error(`UncaughtException: ${error.stack || error.message || String(error)}`)

[charafsalmi]

The issue is caused by an insecure test in webpack-dev-middleware@3.7.2/lib/util.js:131 :
if (req.headers.range) {
https://github.com/webpack/webpack-dev-middleware/blob/68ae47b1838dbd08f83b7e10099a0eaebdc311e1/lib/util.js#L131

If req.headers is falsy, this whole line causes an uncaughtException without any further explanation.

I am still not sure why it is falsy. Any proposition could help.

[devoto13]

I have a vague memory of something like this being fixed some long time ago. IIRC the problem was that some Node version has made req.headers non-enumerable as a result code like { ...req } stopped copying the request headers somewhere in Angular CLI plugin for karma, which caused this problem and was then fixed.

You seem to be using quite old versions, consider updating to the newer versions.

[devoto13]

Here are some refs: nodejs/node#36550, #3588, angular/angular-cli#19644

[devoto13]

Hope you were able to resolve your problem by now.
Closing as a stale support request.