Show error if run on a single file that's ignored

[OmgImAlexis]

When using xo on a single file no errors are shown if said file is ignored in xo's settings.

➜  agenda git:(master) DEBUG=xo xo test/fixtures/addTests.js 
  xo Using local install of XO. +0ms
➜  agenda git:(master) mv test/fixtures/addTests.js .
➜  agenda git:(master) ✗ DEBUG=xo xo ./addTests.js            
  xo Using local install of XO. +0ms

  addTests.js:1:1
  ✖   1:1   Filename is not in kebab case. Rename it to add-tests.js.     unicorn/filename-case
  ✖   2:3   Strings must use singlequote.                                 quotes
  ✖   2:3   Extra space after key none.                                   key-spacing

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[sindresorhus]

Makes sense. Wanna try doing a pull request?

[kevva]

On a single file, or all files that is directly called (i.e. not globbed) using the CLI?

[OmgImAlexis]

I would open a PR but I have no clue where to put this type of check.

[sindresorhus]

@kevva We could do it for all specified non-glob inputs. The only way to really detect whether something is a glob or a direct file reference is to fs.existsSync().

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@Norris1z has submitted a pull request. See it on IssueHunt

[fisker]

We only need to test that pattern is a file and check if it's ignored.

This should be very easy to fix now, because I've marked ignored file in report

xo/lib/report.js

Line 81 in 5ff95ad

isIgnored: true,