Cannot finish file scan in eslint --init

[victor-homyakov]

What version of ESLint are you using?
2.8.0
What parser (default, Babel-ESLint, etc.) are you using?
default
Please show your full configuration:
none yet
What did you do? Please include the actual source code causing the issue.

1. eslint --init scripts on existing project
2. I choose to scan my files to determine the best configuration
   What did you expect to happen?
   successful finish
   What actually happened? Please include the actual, raw output from ESLint.

Determining Config: 31% [=========---------------------] 57.2s elapsed, eta 130.1s Cannot read property 'errorCount' of undefined
TypeError: Cannot read property 'errorCount' of undefined
    at C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\autoconfig.js:315:68
    at Array.forEach (native)
    at C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\autoconfig.js:314:29
    at Array.forEach (native)
    at C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\autoconfig.js:310:22
    at Array.forEach (native)
    at Registry.lintSourceCode (C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\autoconfig.js:305:19)
    at configureRules (C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\config-initializer.js:146:25)
    at processAnswers (C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\config-initializer.js:250:18)
    at null.completed (C:\Users\khomyackov\AppData\Roaming\npm\node_modules\eslint\lib\config\config-initializer.js:404:30)

[victor-homyakov]

Additional info for autoconfig.js:315:

result.ruleId: max-len
ruleSetIdx: 9
lintedRegistry.rules[result.ruleId]: [
  { config: 2, specificity: 1, errorCount: 2186 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2045 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2045 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2047 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2047 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2092 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2184 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2094 },
  { config: [ 2, [Object] ], specificity: 2, errorCount: 2186 }
]

[ilyavolodin]

@IanVS Could you take a look please?

[IanVS]

@victor-homyakov thanks for the good information. Is it possible that you have an eslint configuration comment in one of your files which is enabling max-len? You could use eslint --init --debug to see which file is the last one it attempts before it crashes.

[IanVS]

I believe I have a fix in #5999.

[victor-homyakov]

@IanVS yes, the file contains /*eslint max-len:[1,140,4]*/

[victor-homyakov]

@IanVS I confirm that your fix solves this issue

[IanVS]

Getting good, detailed bug reports makes me so happy. 😃 Thanks for taking the time to do a little extra troubleshooting.

Hopefully we can squeeze this fix into today's release.