#import <DOM/Element.idl> #import <DOM/Node.idl> #import <DOM/Text.idl> #import <HTML/HTMLElement.idl> // https://html.spec.whatwg.org/multipage/scripting.html#htmlslotelement [Exposed=Window] interface HTMLSlotElement : HTMLElement { [HTMLConstructor] constructor(); [CEReactions, Reflect] attribute DOMString name; sequence<Node> assignedNodes(optional AssignedNodesOptions options = {}); sequence<Element> assignedElements(optional AssignedNodesOptions options = {}); undefined assign((Element or Text)... nodes); }; dictionary AssignedNodesOptions { boolean flatten = false; };