A mighty, modern CSS linter.


Keywords
css-in-js, css, less, lint, linter, markdown, sass, scss, stylelint, sugarss, enforce-conventions, hacktoberfest, html, postcss
License
MIT
Install
npm install stylelint@13.13.1

Documentation

Stylelint

npm version Build Status npm downloads

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

Features

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 perferred 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

Example

Guides

Contributors

Stylelint is maintained by volunteers. Without the code contributions from all these fantastic people, Stylelint would not exist. Become a contributor.

Sponsors

Thank you to all our sponsors! Become a sponsor.

Backers

Thank you to all our backers! Become a backer.

Website hosting

Deploys by Netlify

License

The MIT License.