Add support for enabling a rule with stylelint-command comments

[AndreasNasman]

What is the problem you're trying to solve?

Enabling a rule (with options) using stylelint-commands.

What solution would you like to see?

Being possible to write e.g.

/* stylelint declaration-no-important: [ true, { severity: 'warning' } ] */

to enable declaration-no-important with warning severity for a single file.

[AndreasNasman]

For reference, ESLint has this feature. Is this something that's already possible to do in Stylelint? I tried the one I mentioned in the comment above and a couple of variations, but couldn't figure out a working one.

[ybiquitous]

@AndreasNasman Thanks for the suggestion. As I know, stylelint doesn't have such a feature. For example, see the demo.
But I think this idea is interesting.

[ybiquitous]

Currently, stylelint has two kinds of comments: stylelint-disable and stylelint-enable
See: https://stylelint.io/user-guide/ignore-code/

[jeddy3]

This feature SGTM. It's likely related to #2643 as files are linted first and then errors within disable ranges are removed. Feel free to investigate how the stylelint-commands code can be rearchitected to facilitate a new /* stylelint .. */ command comment, as it'll involve gathering the stylelint-commands before any linting happens so that the final configuration is known beforehand.

Now is a good time to look into this as the internals have been improved as we move towards releasing 14.0.0 (see #5542 & #5521, in particular).

These command comments should take the highest precedence, over overrides and (the yet to be added) --rules flag.

I've labelled the issue as ready to implement. Please consider contributing if you have time.

[stof]

eslint-enable does not support enabling unknown rules. It is only about re-enabling rules. And the eslint command configuring new rules is only supported at the beginning of the file AFAIK

[AndreasNasman]

Not sure what you mean @stof. You can enable/disable/customize ESLint rules through comments anywhere in a file. The rules also don't have to be configured in eslintrc beforehand, so they can be 'enabled from scratch' so to say. This issue is not about enabling unknown rules, it's about improving the Stylelint comments to allow for customizing of available rules. 🙂

[github-actions]

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