[css-animations-2] CSS animations on shadow parts
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Description
::part() selectors expose sets of elements in a shadow tree as through a pseudo-element selector on its host. If animation properties are set this way there is some undefined behavior.
Which tree is the @keyframes rule resolved on? Is it the shadow tree of the element or is it the host's tree.
Is the owning element the element in the shadow tree or is it the host? This effects which tree it appears in the getAnimations() results for.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the CSS animations and Shadow Parts specifications, focusing on ::part() selectors, @keyframes resolution, and getAnimations() results. Compare how the shadow tree and host tree are defined, then document a consistent resolution for the owning element and animation rule scope.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css
- Domain
- frontend, web-dev
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100