[whatwg/dom] [meta] Extending DOM APIs to support shadow roots tracking issue (Issue #1475)

LeaVerou created an issue (whatwg/dom#1475)

This is a meta-issue to track requests to expand existing DOM APIs to cover shadow roots and related concepts (e.g. slotted elements, composed trees). 
To keep the list manageable, only the top-level proposals for each feature are included, not individual low-level issues about ongoing work.

Expand existing APIs to shadow Roots:

- https://github.com/whatwg/dom/issues/1287
- https://github.com/whatwg/dom/issues/1265
- https://github.com/whatwg/dom/issues/1189
- https://github.com/whatwg/dom/issues/1321
- https://github.com/whatwg/dom/issues/1395
- https://github.com/whatwg/dom/issues/1422


Expand existing APIs to composed trees:

- https://github.com/whatwg/dom/issues/1214
- https://github.com/whatwg/dom/issues/725
- https://github.com/whatwg/dom/issues/463 (basically `querySelector()` on the composed tree)
- https://github.com/whatwg/dom/issues/1415



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Received on Thursday, 25 June 2026 15:01:44 UTC