I’m not sure if this better belongs in some Houdini repo or not so I’m posting here.
I would like the ability to track the lifecycle of CSS properties (restricting to custom properties is fine with me). Particularly I would like to know:
- When an element is using a property (meaning the property is part of a rule that is currently valid).
- When an element stops using a property.
This would be particular useful within the world of CSS polyfills (and again, restricting to custom properties makes sense to me).
One case where I would like to use this feature is to implement the previous web component decorator idea. This idea was to use a template on an element when a
decorator property was present. Implementing this as a custom element might meaning having a custom property that looks like:
I don’t have an opinion on what the lifecycle API would look like, just that it allowed me to register
--decorator as a property I am interested in observing.