Gale

An extremely fast CSS linter. Drop-in replacement for Stylelint.

Typically 10-100x faster than Stylelint. Same config. Zero migration.

Fast enough to run after every edit, Gale also does what Stylelint does not:

• Built for coding agents. gale:strict and the agent formatter keep AI-written CSS in line: colours and spacing from variables, no !important, no ID selectors, and a report the agent acts on.
• Catches CSS that does nothing. gale/no-ineffective-declarations reports declarations the block switches off, like justify-content on a box that is neither flex nor grid, or top on a static one.
• Ready for Dart Sass 3. gale:sass3 reports the @import rules and global functions Dart Sass 3 removes, and --fix rewrites map-get() to map.get() with the @use it needs.

Compatibility: Gale targets Stylelint v17 semantics.

npm install -D @codebend3r/gale

# Uses your existing .stylelintrc
npx gale "src/**/*.css"

Programmatic API

import { lint, resolveConfig, formatters } from '@codebend3r/gale';

const result = await lint({
  files: 'src/**/*.css',
  config: { rules: { 'block-no-empty': true } },
});

console.log(result.errored);
console.log(result.results);

See the full documentation at github.com/codebend3r/gale.