microsoft / microsoft/tabster

Shadow DOM: Update MutationObserver to work with shadow roots

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

Description

MutationObservers do not track changes inside shadow roots meaning Tabster cannot track its tabster attribute for elements inside a shadow root.

Update MutationEvent to handle shadow roots.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with src/MutationEvent.ts and inspect how MutationObservers currently track changes and the tabster attribute. Verify the behavior for elements inside shadow roots, then confirm that Tabster tracks relevant changes there without regressing regular DOM observation.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
48/100

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