About Stylelint
Overview
Stylelint is a mighty CSS linter that helps developers avoid errors and enforce conventions in their stylesheets. It has over 100 built-in rules for modern CSS syntax and features, and supports plugins for custom rules.
Stylelint catches invalid things like malformed grid areas, valid but problematic things like duplicate selectors, and unknown things like misspelled property names. It also enforces conventions by disallowing specific units, enforcing naming patterns, setting limits on selectors, and specifying notations for modern color functions.
Key Benefits
- Over 100 built-in rules for modern CSS syntax and features.
- Automatically fixes problems where possible.
- Supports plugins so you can create your own custom rules.
- Supports shareable configs that you can create or extend.
- Can be customized to your exact needs.
- Trusted by companies worldwide like Google and GitHub.
How It Works
You install Stylelint via npm and configure it with a .stylelintrc file or a stylelint.config.js file. You then run the CLI command stylelint "**/*.css" to lint your stylesheets, or integrate it into your build process using the Node.js API or PostCSS plugin. Stylelint checks your CSS against your configured rules and reports errors and warnings, with automatic fixing available for many rules.
Use Cases
- Front-end developers who want to catch CSS errors like malformed grid areas and duplicate selectors before they reach production.
- Teams enforcing consistent CSS conventions across large codebases with shareable configs.
- Developers working with SCSS, Sass, Less, or SugarSS who need linting for CSS-like languages.
- Open-source maintainers who want to integrate CSS linting into their CI/CD pipelines.
- Developers using CSS-in-JS who need to lint embedded styles in template literals.
Why Choose This Product
Stylelint is best suited for developers and teams who want a customizable, open-source CSS linter with over 100 built-in rules and plugin support. It is free to use under the MIT License and maintained by volunteers, with no paid tiers or commercial restrictions.
https://stylelint.io/
