Given a container element, return DOMRects (in viewport coords) for each direct child carrying a data-node attribute, in DOM order. Used by the default getInsertionIndex wiring in <Container>.
data-node
getInsertionIndex
<Container>
Given a container element, return DOMRects (in viewport coords) for each direct child carrying a
data-nodeattribute, in DOM order. Used by the defaultgetInsertionIndexwiring in<Container>.