[css-view-transitions-2] `CSSViewTransitionRule.type` overrides deprecated `CSSRule.type`

[cdoublev]

One may expect 0 from getting CSSViewTransitionRule.type.

The type attribute is deprecated. It must return an integer, as follows:

[...]

Otherwise, return 0.

I guess it is ok if it returns the descriptor value, but I would just like to make sure.

[tabatkins]

No, this does need fixing. The naming clash is unfortunate, but subclasses shouldn't override an attribute with an incompatible type.

[noamr]

OK, proposing typeList (like classList) as this is a DOMTokenList.

[css-meeting-bot]

The CSS Working Group just discussed [css-view-transitions-2] `CSSViewTransitionRule.type` overrides deprecated `CSSRule.type` , and agreed to the following:

• RESOLVED: Change CSSViewTransitionRule .type to .typeList

The full IRC log of that discussion

<Frances> Tab: CSSViewTransitionRule as a .type is deprecated, it needs renaming such as typeList instead.
<bramus> SGTM
<TabAtkins> .type is already used in CSSRule (it's deprecated)
<Frances> PROPOSAL: Change CSSViewTransitionRule .type to .typeList
<Frances> RESOLVED: Change CSSViewTransitionRule .type to .typeList

[cdoublev]

Probably too late but it would have been nice to match the descriptor, the CSS rule attribute, and the argument property for startViewTransition(), eg. with active-type/activeType.

It allows blindly defining descriptors from the specified declarations with the appropriate algorithm, as is usually (always?) the case with other CSS rules mirroring specified declarations and exposed attributes.