こんにちはTAG!

I'm requesting a TAG review of:

• Name: Default accessibility semantics for custom elements
• Specification URL: Allow setting default accessibility semantics for custom elements whatwg/html#4658, Generalize AccessibilityRole/AriaAttributes IDL w3c/aria#984
• Explainer (containing user needs and example code)¹: https://github.com/alice/aom/blob/gh-pages/explainer.md#default-semantics-for-custom-elements-via-the-elementinternals-object
• Tests: none yet
• Primary contacts (and their relationship to the specification): @alice @domenic @tkent-google @rakina

We'd prefer the TAG provide feedback as (please select one):

• open issues in our GitHub repo for each point of feedback
• open a single issue in our GitHub repo for the entire review
• leave review feedback as a comment in this issue and @-notify one of the primary contacts above

Please preview the issue and check that the links work before submitting. In particular, if anything links to a URL which requires authentication (e.g. Google document), please make sure anyone with the link can access the document.

¹ For background, see our explanation of how to write a good explainer.