Contributing

Read the repository contribution guide before opening a pull request. It defines the HTML, AngularTS, CSS, and AngularCSS ownership order, local setup, generated documentation workflow, and public API review process.

For shared presentation changes, update the DTCG 2025.10 source rather than editing generated token CSS. For catalog changes, keep root classes minimal and prefer semantic descendants and native attributes. Browser tests must exercise the built standalone example.

The required local sequence is:

npm run release:build
npm run check
npm test

Keep a pull request focused. Describe the concrete trigger, the resulting behavior, the public API impact, and the validation performed.