In the current spec, only Element has getDestinationInsetionPoints:


http://w3c.github.io/webcomponents/spec/shadow/#widl-Element-getDestinationInsertionPoints-NodeList

partial interface Element {
    ShadowRoot createShadowRoot ();
    NodeList   getDestinationInsertionPoints ();
    readonly    attribute ShadowRoot? shadowRoot;
};


However, because not only Element, but also TextNode can be distributed, getDestinationInsertionPoints should be defined also in TextNode.


One idea is to let Node have getDestinationInsertionPoints rather than Element:

Idea A::

partial interface Node {
    NodeList   getDestinationInsertionPoints ();
};


Another idea is to let TextNode have getDestinationInsertionPoints, in addition to Element:


Idea B::

partial interface Element {
    NodeList   getDestinationInsertionPoints ();
};

partial interface TextNode {
    NodeList   getDestinationInsertionPoints ();
};



Which should we prefer?