1867577 - Check support for declarative Shadow DOM

Status: NEW

(DevTools :: Inspector, task)

Description

[Nicolas Chevobbe [:nchevobbe]]

At the moment we do show ShadowDOM elements in the markup view and you can expand the tree.
We may have code that assumes they're always registered with attachShadow, so we should check that declarative instances are working just fine.

Comment 1

[Sebastian Zartner [:sebo]]

I didn't check the code, though the Inspector does show Declarative Shadow DOM as expected. Simple test cases for open and closed shadow roots:

data:text/html,<some-element><template shadowrootmode="open">Open Declarative Shadow DOM supported</template></some-element>

data:text/html,<some-element><template shadowrootmode="closed">Closed Declarative Shadow DOM supported</template></some-element>

Sebastian