Definition
DOM Standard defines ChildNode
interface mixin ChildNode {
[CEReactions, Unscopable] undefined before((Node or DOMString)... nodes);
[CEReactions, Unscopable] undefined after((Node or DOMString)... nodes);
[CEReactions, Unscopable] undefined replaceWith((Node or DOMString)... nodes);
[CEReactions, Unscopable] undefined remove();
};