stylelint  14.12.1
About: stylelint is a modern linter that helps you avoid errors and enforce conventions in your styles.
  Fossies Dox: stylelint-14.12.1.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

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stylelint Documentation

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A mighty, modern linter that helps you avoid errors and enforce conventions in your styles.


It's mighty as it:

  • has over 170 built-in rules for modern CSS syntax and features
  • supports plugins so you can create your own rules
  • automatically fixes problems where possible
  • is well tested with over 15000 unit tests
  • supports shareable configs that you can extend or create
  • is unopinionated so that you can customize it to your exact needs
  • complements pretty printers like Prettier
  • has a growing community and is used by Google, GitHub and WordPress

And can be extended to:

  • parse CSS-like syntaxes like SCSS, Sass, Less and SugarSS
  • extract embedded styles from HTML, Markdown and CSS-in-JS object & template literals

How it'll help you

It'll help you avoid errors, for example styles that are:

  • invalid, e.g. malformed hex colors and named grid areas
  • valid but with unintended consequences, e.g. duplicated selectors and overridden properties

And enforce conventions, for example:

  • what units, functions, at-rules etc are allowed
  • consistent patterns for selector names, at-rule names, custom properties etc
  • maximum specificity or maximum quantity of each selector type
  • your preferred notation for color functions, font weight etc

There are also rules for enforcing stylistic consistency, but we now recommend you use Stylelint alongside a pretty printer like Prettier. Linters and pretty printers are complementary tools that work together.

Example output




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The MIT License.