The CI infrastructure basically runs npm install && npm test. We surely added some basic configuration to all MediaWiki extensions but I don't think we added stylelint everywhere.

One should be able to tweak the output by following https://stylelint.io/user-guide/configuration/ or maybe the repository uses a Grunt task.

Surely contributors of https://github.com/wikimedia/stylelint-config-wikimedia know better how to tweak stylelint output on failures. I have subscribed them to this task :]

@hashar Eurgh, we've got reports upstream about this, you're the first one in our environment though (which might make it easier to test solutions against it):
https://github.com/wikimedia/grunt-stylelint/issues/49

stylelint doesn't show the issue (running it via .node_modules/.bin/stylelint)

grunt-stylelint invokes styleLint.lint with the options:

{ failOnError: true,
  files: [ 'modules/ext.abuseFilter.css' ],
  formatter: 'string' }

And from stylelint it gets:

{ errored: true,
  output: '\n\u001b[4mmodules/ext.abuseFilter.css\u001b[24m\n .. ..  .  ...                             ...        \n  . .   .                                             \n        .\n\n',
  results: 
   [ { source: '/home/hashar/projects/mediawiki/extensions/AbuseFilter/modules/ext.abuseFilter.css',
       deprecations: [],
       invalidOptionWarnings: [],
       parseErrors: [],
       errored: true,
       warnings: [Object],
       ignored: undefined,
       _postcssResult: [Object] } ] }

The issue seems to be in stylelint stringFormatter. It passes a list of messages to table@4.0.2 and that screw it up. The messages being passed:

[ [ 74,
    20,
    '\u001b[31m\u001b[31m✖\u001b[31m\u001b[39m',
    'Unexpected named color "gray" ',
    '\u001b[2mcolor-named\u001b[22m' ] ]

And table returns the space/dots.

Side note: running grunt with --verbose gives show the proper output as well as the mangled one using spaces/dots:

Also seen in https://gerrit.wikimedia.org/r/c/420929/ for ContentTranslation. I can see the errors locally, but they make no sense. There are no } on those lines.

So I assume some dependency that is not specified with exact version got updated and broke things.

Diffing work and failing build for CX:

-│ │ │ └── electron-to-chromium@1.3.39
-│ │ ├── caniuse-lite@1.0.30000815
+│ │ │ └── electron-to-chromium@1.3.40
+│ │ ├── caniuse-lite@1.0.30000817


-│ ├─┬ postcss-less@1.1.3
+│ ├─┬ postcss-less@1.1.4

And indeed downgrading postcss-less to 1.13 makes those two errors go away. But I think this is a separate issue and does not relate to the display issue, so I leave this task at this.

FWIW: On my Ubuntu server (over ssh) with node v7.0.0 and npm 3.10.8 I don't observe the "dots" issue, but locally with Debian and node v9.8.0 and npm 5.6.0 I do see it.

In T190072#4067609, @Nikerabbit wrote:

<snip>

-│ ├─┬ postcss-less@1.1.3
+│ ├─┬ postcss-less@1.1.4

And indeed downgrading postcss-less to 1.13 makes those two errors go away. But I think this is a separate issue and does not relate to the display issue, so I leave this task at this.

That one got filled as T190269: Warning: Task "stylelint:src" failed due to postcss-less@1.1.4.

Workaround: ./node_modules/.bin/stylelint resources/*.less appears to work.

Seems not to help on GettingStarted:
https://integration.wikimedia.org/ci/job/mwgate-npm-node-6-docker/33663/console
trigged by https://gerrit.wikimedia.org/r/#/c/424729/

00:39:47 Running "stylelint:all" (stylelint) task
00:39:50 
00:39:50 resources/lightbulb/lightbulb.flyout.less
00:39:50  .. .  .  ...                              ...        
00:39:50   . .  .                                              
00:39:50     .  .                                              
00:39:50  .. .  .  ...                              ...        
00:39:50   . .  .                                              
00:39:50     .  .
00:39:50 
00:39:50 ✖ 2 problems
00:39:50 
00:39:50 Warning: Task "stylelint:all" failed. Use --force to continue.
00:39:50

Doesn't fix the issue on Kartographer, either.

In T190072#4129805, @Mholloway wrote:

Doesn't fix the issue on Kartographer, either.

I see no failure on the project's patch sets

In T190072#4129999, @Umherirrender wrote:

I see no failure on the project's patch sets

See PS1 of https://gerrit.wikimedia.org/r/#/c/426019/. I pulled down this version and ran stylelint with libraries updated as in https://gerrit.wikimedia.org/r/424175 and saw no improvement.