#import #import // https://dom.spec.whatwg.org/#parentnode interface mixin ParentNode { [SameObject] readonly attribute HTMLCollection children; readonly attribute Element? firstElementChild; readonly attribute Element? lastElementChild; readonly attribute unsigned long childElementCount; [CEReactions, Unscopable] undefined prepend((Node or DOMString)... nodes); [CEReactions, Unscopable] undefined append((Node or DOMString)... nodes); [CEReactions, Unscopable] undefined replaceChildren((Node or DOMString)... nodes); Element? querySelector(DOMString selectors); [NewObject] NodeList querySelectorAll(DOMString selectors); };