Getting error regarding slice during Karma/AngularJS unit test config - angularjs

Question

$ karma init configs/karma.conf.js
>
readline.js:507
this.line = this.line.slice(this.cursor);
^
TypeError: Cannot call method 'slice' of undefined
at Interface._deleteLineLeft (readline.js:507:25)
at suggestNextOption (C:\Users\DEVUSER\AppData\Roaming\npm\node_modules\karma\lib\init.js:165:9)
at nextQuestion (C:\Users\DEVUSER\AppData\Roaming\npm\node_modules\karma\lib\init.js:231:12)
at process (C:\Users\DEVUSER\AppData\Roaming\npm\node_modules\karma\lib\init.js:246:10)
at Object.exports.init (C:\Users\DEVUSER\AppData\Roaming\npm\node_modules\karma\lib\init.js:348:6)
at Object.<anonymous> (C:\Users\DEVUSER\AppData\Roaming\npm\node_modules\karma\bin\karma:26:37)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
I am getting this error when trying to run karma init configs/karma.conf.js
I have all of this running under Windows 7 x64
I am following this guide: https://coderwall.com/p/xz-qcg
Any suggestions would be appreciated.

Answer 1

I had the same problem, but I was running this in Cygwin. I don't know if you were.
I first uninstalled and reinstalled nodejs.
When I brought up the rxvt window again to try installing karma, it failed with this:
/c/Program Files/nodejs/npm: line 2: $'\r': command not found
/c/Program Files/nodejs/npm: line 4: $'\r': command not found
/c/Program Files/nodejs/npm: line 5: syntax error near unexpected token `$'in\r''
'c/Program Files/nodejs/npm: line 5: `case `uname` in
This is apparently because of my using it in Cygwin, although I don't know why I didn't get this error before. The following talks about this: https://github.com/isaacs/npm/issues/3710 .
So, I then just opened up a plain "cmd" window, and I found that the package install completed, and "karma init" worked well enough to ask me the first "init" question, so I imagine this is resolved.