market layout

const Map = (props: PropsMap) => {
    ...
    useEffect(() => {
      if (!map) {
        return;
      }
  
      const layerGroup = new LayerGroup();
  
      points.forEach((point) => {
        leaflet
          .marker(...).addTo(layerGroup);
      });
  
      map.addLayer(layerGroup);
  
      return () => {
        layerGroup.remove();
      };
    }, [map, points]);

}