Stylelintiä

Stylelintiä is the Finnish name used for Stylelint, an open-source linting tool for CSS and CSS-like languages. It analyzes stylesheet source code to enforce stylistic conventions and catch errors by comparing it to a configurable set of rules. The tool supports CSS, SCSS, Less and SugarSS through its parsing ecosystem and can be extended with plugins.

Core features include a comprehensive rule set for syntax, formatting and naming, support for custom and shared configurations, and an extensible plugin system. Stylelint can automatically fix many issues where possible, and it provides detailed messages with line and column information to help developers locate problems.

Configuration is provided via a .stylelintrc file, stylelint.config.js, or entries in package.json. Rules are defined in a configuration object, and configurations may extend existing presets such as stylelint-config-standard. Users can enable, disable, or adjust rule severity, and autofix can be enabled for supported rules. The tool is typically run from the command line or integrated into build pipelines.

Usage and ecosystem: Stylelint is widely used in modern web development. It can be invoked in npm scripts, integrated with build tools like Webpack or Gulp, and used through editors with a Stylelint extension. A large ecosystem of shareable configurations and plugins exists, supporting additional languages and specialized rules.

See also: Stylelint, stylelint-config-standard, linting, CSS.