Re: [whatwg/dom] Allow elements with a null customElementRegistry without Shadow DOM (Issue #1413)

rniwa left a comment (whatwg/dom#1413)

Hm... so I'm implementing these new behaviors and there seems to be at least one open question. What happens to a defined custom element with `customelementregistry` content attribute? Should we not construct a defined custom element and instead construct an upgrade candidate when this content attribute is set? Similarly, what happens when you call `document.createElement('a-b', {customElementRegistry: null})` when `a-b` is a defined custom element?

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Received on Sunday, 16 November 2025 02:34:03 UTC