interface JDCGmap extends GenerateGmapUtilFunctionResult<T> {
  addJDCMarker: (opt: GmapUtilMarkerOptions, type?: T) => GoogleMarkerType;
  addJDCRoundMarker: (
    opt: GmapUtilMarkerOptions,
    type:
      | "lightRedNoMinus"
      | "darkRedNoMinus"
      | "disabledWithMinus"
      | "lightRedWithMinus"
  ) => GoogleMarkerType;
  drawJDCPolygon: (
    pos: Coordinate[],
    opt?: GooglePolygonOptions
  ) => google.maps.Polygon;
  drawJDCLine: (
    pos: Coordinate[],
    opt?: GooglePolylineOptions
  ) => GooglePolylineType;
}
interface JDCGmapEnhance<T> {
  (util: GenerateGmapUtilFunctionResult): JDCGmap<T>;
}