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[compositing-2] Define properties with animation type

cdoublev opened this issue · comments

commented

CSS properties from Compositing 2 are defined with Animatable: no, but Web Animations 1 requires Animation Type:

How property values combine is defined by the Animation type line in each property’s property definition table

w3c/reffy (spec crawler) does not normalize Animatable to Animation Type therefore users have to check both propDef.animationType and propDef.animatable, which is not great.

Ideally, I think its value should also conform to the values listed in Web Animations instead of no, ie. not animatable, but background-blend-mode and mix-blend-mode could be defined with discrete.