Shadow DOM: support `activeElement` in shadow roots

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
42/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
typescript
Domain
accessibility, frontend

Research direction

Start with the linked CodePen example and search the TypeScript codebase for document.activeElement handling. The work is done when focus inside a shadow root can be obtained through ShadowRoot.activeElement rather than only resolving to the host element.

Written by the indexing model from the issue text.

Description

When the active element for a document is inside a shadow root document.activeElement points to the host element rather than the actually focused element. To access the actually focused element the ShadowRoot.activeElement must be inspected.

Example of the issue

Dominant language
TypeScript
Stars
165
Forks
42
Avg merge
1d 11h
Merged PRs (30d)
9

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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