Allow data to cascade

[scottkellum]

This might require registering the custom property and using get computed value for each element, then using that as the data. This way data can be set in the parent component container and cascade into all elements in the component.

[c-harding]

How would this merge with the child's data, if present? Would it be a simple override, or element-wise override?

[KargJonas]

I'd do it with a reserved data.props variable, somewhat like react..

[scottkellum]

I was thinking child data would override parent data, but understand that having both parent and child data might be helpful, especially with nested components.

[c-harding]

This involves changing the render order. Basically BFS of every element in the DOM against the list of all selectors, which sounds pretty inefficient