#import interface Event { constructor(DOMString type, optional EventInit eventInitDict = {}); readonly attribute DOMString type; readonly attribute EventTarget? target; readonly attribute EventTarget? srcTarget; readonly attribute EventTarget? currentTarget; sequence composedPath(); const unsigned short NONE = 0; const unsigned short CAPTURING_PHASE = 1; const unsigned short AT_TARGET = 2; const unsigned short BUBBLING_PHASE = 3; readonly attribute unsigned short eventPhase; undefined stopPropagation(); attribute boolean cancelBubble; undefined stopImmediatePropagation(); readonly attribute boolean bubbles; readonly attribute boolean cancelable; attribute boolean returnValue; undefined preventDefault(); readonly attribute boolean defaultPrevented; readonly attribute boolean composed; readonly attribute boolean isTrusted; readonly attribute double timeStamp; undefined initEvent(DOMString type, optional boolean bubbles = false, optional boolean cancelable = false); }; dictionary EventInit { boolean bubbles = false; boolean cancelable = false; boolean composed = false; };