1 files changed, 10 insertions, 9 deletions

diff --git a/src/dumbymap.mjs b/src/dumbymap.mjs
index 6483411..2e1f7d2 100644
--- a/src/dumbymap.mjs
+++ b/src/dumbymap.mjs
@@ -353,26 +353,27 @@ export const generateMaps = (container, { delay, mapCallback }) => {
       return
     }
 
+    // Work with Mutation Observer
+    const observer = mapFocusObserver()
+    mapFocusObserver().observe(mapElement, {
+      attributes: true,
+      attributeFilter: ['class'],
+      attributeOldValue: true
+    })
+    onRemove(mapElement, () => observer.disconnect())
+
     // Execute callback from caller
     mapCallback?.call(this, mapElement)
     const markers = geoLinks
       .filter(link => !link.targets || link.targets.includes(mapElement.id))
       .map(link => ({ xy: link.xy, title: link.url.pathname }))
 
+    // FIXME Here may cause error
     // Add markers with Geolinks
     renderer.addMarkers(markers)
     mapElement
       .querySelectorAll('.marker')
       .forEach(marker => htmlHolder.anchors.push(marker))
-
-    // Work with Mutation Observer
-    const observer = mapFocusObserver()
-    mapFocusObserver().observe(mapElement, {
-      attributes: true,
-      attributeFilter: ['class'],
-      attributeOldValue: true
-    })
-    onRemove(mapElement, () => observer.disconnect())
   }
 
   // Set unique ID for map container