🎉 v1.1.0

Six new rules, a set of shared helpers under src/utils, and clearer contribution docs.

🆕 New rules

Rule	What it does	Presets
🔁 no-duplicate-font-faces	Flags `@font-face` declarations that are defined more than once	recommended · correctness · performance · holistic
🗑️ no-unused-font-faces	Flags `@font-face` declarations that nothing uses	recommended · correctness · performance · holistic
🛡️ no-invalid-property-registration	Catches invalid `@property` registrations	recommended · correctness
🔘 max-unique-border-radiuses	Limits unique `border-radius` values (default 8, warning)	recommended · design-tokens · holistic
🎛️ max-unique-custom-properties	Limits unique custom properties (default 256, warning)	recommended · design-tokens · holistic
🧅 max-unique-layers	Limits unique `@layer` names (default 8, warning)	recommended · maintainability · holistic

⚠️ Heads-up for upgraders: if you extend recommended, you'll get all six rules automatically. The two font-face rules and no-invalid-property-registration are enabled as errors. The three max-unique-* rules start as warnings.

Each rule has its own README under src/rules/<rule>/README.md.

🧰 Shared helpers in `src/utils`

A lot of duplicated logic is now in reusable helpers. New rules need less boilerplate, and the rules behave more consistently.

🏗️ define_rule: one place for rule metadata and plugin registration (#281)
📊 UniqueTracker and validate_options_with_ignore: shared by all max-unique-* rules (#282)
📍 get_value_offset and get_params_offset: report helpers that point at the exact position in a value or at-rule (#280)
⚡ String utilities replace regexes: matching now uses the case-insensitive, allocation-free helpers from @projectwallace/css-parser/string-utils (#279)

📚 Docs

✍️ CONTRIBUTING.md has a new "String matching" section. It explains when to use str_equals, str_starts_with, str_index_of, is_custom and strip_vendor_prefix. It also covers pitfalls with custom idents and vendor-prefixed names.
🧭 README.md now lists the new rules and points to the shared helpers.

📦 Dependencies

⬆️ css-parser 0.19.4
⬆️ css-analyzer 9.9.6
⬆️ oxlint-preset 0.0.12

What's Changed

feat: add no-duplicate-font-faces rule by @bartveneman in #270
chore(deps): update css-parser 0.19.4; css-analyzer 9.9.6; oxlint-preset 0.0.12 by @bartveneman in #278
feat: add no-unused-font-faces rule by @bartveneman in #269
feat: add no-invalid-property-registration rule by @bartveneman in #271
feat: add max-unique-border-radiuses rule by @bartveneman in #273
feat: add max-unique-custom-properties rule by @bartveneman in #274
feat: add max-unique-layers rule by @bartveneman in #275
Replace regex patterns with string utility functions by @bartveneman in #279
Extract get_value_offset and get_params_offset report helpers by @bartveneman in #280
Add UniqueTracker and validate_options_with_ignore for max-unique rules by @bartveneman in #282
Add define_rule helper for rule metadata and plugin registration by @bartveneman in #281

Full Changelog: v1.0.0...v1.1.0

projectwallace/stylelint-plugin v1.1.0 on GitHub