fix(supercluster): fixes inconsistent rounding causing clusters to not decluster at maxZoom when using fractional zooming

Author: scarg0e

src/algorithms/supercluster.ts

@@ -50,7 +50,7 @@ export class SuperClusterAlgorithm extends AbstractAlgorithm {
 
   public calculate(input: AlgorithmInput): AlgorithmOutput {
     let changed = false;
-    const state = { zoom: input.map.getZoom() };
+    const state = { zoom: Math.round(input.map.getZoom()) };
 
     if (!equal(input.markers, this.markers)) {
       changed = true;
@@ -91,7 +91,7 @@ export class SuperClusterAlgorithm extends AbstractAlgorithm {
     return this.superCluster
       .getClusters([-180, -90, 180, 90], Math.round(map.getZoom()))
       .map((feature: ClusterFeature<{ marker: Marker }>) =>
-        this.transformCluster(feature)
+        this.transformCluster(feature),
       );
   }