SVGMarkerElement: { prototype: SVGMarkerElement; SVG_MARKER_ORIENT_ANGLE: number; SVG_MARKER_ORIENT_AUTO: number; SVG_MARKER_ORIENT_UNKNOWN: number; SVG_MARKERUNITS_STROKEWIDTH: number; SVG_MARKERUNITS_UNKNOWN: number; SVG_MARKERUNITS_USERSPACEONUSE: number; new (): SVGMarkerElement; }