fix: 린트 수정 #124

#preview

frontend/src/store/googleMapSlice/index.ts

@@ -158,33 +158,33 @@ class cMarkerClusterer extends MarkerClusterer {
       });
 
       // Allow algorithms to return flag on whether the clusters/markers have changed.
-      if (changed || changed == undefined) {
+      if (changed || changed === undefined) {
         // Accumulate the markers of the clusters composed of a single marker.
         // Those clusters directly use the marker.
         // Clusters with more than one markers use a group marker generated by a renderer.
         const singleMarker = new Set<Marker>();
         for (const cluster of clusters) {
-          if (cluster.markers?.length == 1) {
+          if (cluster.markers?.length === 1) {
             singleMarker.add(cluster.markers[0]);
           }
         }
 
         const groupMarkers: Marker[] = [];
         // Iterate the clusters that are currently rendered.
         for (const cluster of this.clusters) {
-          if (cluster.marker == null) {
+          if (cluster.marker === null) {
             continue;
           }
-          if (cluster.markers?.length == 1) {
-            if (!singleMarker.has(cluster.marker)) {
+          if (cluster.markers?.length === 1) {
+            if (!singleMarker.has(cluster.marker!)) {
               // The marker:
               // - was previously rendered because it is from a cluster with 1 marker,
               // - should no more be rendered as it is not in singleMarker.
-              MarkerUtils.setMap(cluster.marker, null);
+              MarkerUtils.setMap(cluster.marker!, null);
             }
           } else {
             // Delay the removal of old group markers to avoid flickering.
-            groupMarkers.push(cluster.marker);
+            groupMarkers.push(cluster.marker!);
             // cluster.markers?.forEach((marker) => {
             //   MarkerUtils.setMap(marker, null);
             // });