fix: show OpenStreetMap attribution on demo site (#2462)

Signed-off-by: pierreeurope <pierre.europe@pm.me>

Author: pierreeurope

src/components/src/map-container.tsx

@@ -560,10 +560,10 @@ export default function MapContainerFactory(
       this._updateMapboxLayers();
 
       if (update && update.style) {
-        // No attributions are needed if the style doesn't reference Mapbox sources
+        // Show attributions if the style uses Mapbox or OpenStreetMap sources
         this.setState({
           showBaseMapAttribution:
-            isStyleUsingMapboxTiles(update.style) || !isStyleUsingOpenStreetMapTiles(update.style)
+            isStyleUsingMapboxTiles(update.style) || isStyleUsingOpenStreetMapTiles(update.style)
         });
       }
 

src/utils/src/map-style-utils/mapbox-utils.ts

@@ -32,8 +32,8 @@ export function isStyleUsingOpenStreetMapTiles(mapStyle: any) {
   const sources = mapStyle?.stylesheet?.sources || {};
   return Object.keys(sources).some(sourceId => {
     const {attribution} = sources[sourceId] || {};
-    if (typeof attribution?.attribution === 'string') {
-      return attribution.attribution.includes('openstreetmap.org');
+    if (typeof attribution === 'string') {
+      return attribution.includes('openstreetmap.org');
     }
     return false;
   });