import { useEffect } from 'react'; import usePersistedState from '../../common/util/usePersistedState'; import { map } from '../core/MapView'; import useMapOverlays from './useMapOverlays'; const MapOverlay = () => { const id = 'overlay'; const mapOverlays = useMapOverlays(); const [selectedMapOverlay] = usePersistedState('selectedMapOverlay'); const activeOverlay = mapOverlays.filter((overlay) => overlay.available).find((overlay) => overlay.id === selectedMapOverlay); useEffect(() => { if (activeOverlay) { map.addSource(id, activeOverlay.source); map.addLayer({ id, type: 'raster', source: id, layout: { visibility: 'visible', }, }); } return () => { if (map.getLayer(id)) { map.removeLayer(id); } if (map.getSource(id)) { map.removeSource(id); } }; }); return null; }; export default MapOverlay;