react-native-map-clustering
                                
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                        Update supercluster for improved performance
Official supercluster github repo says that 8.0.0 has an improved performance for clustering and reduced memory footprint. (https://github.com/mapbox/supercluster/releases/tag/v8.0.0) It also has an updated version of kdbush which doesn't throw an error if there are no markers on the map.
has this been tested?
I wouldn't hold your breath getting this/anything merged. If you use yarn you can add this to your package.json and add it yourself
  "resolutions": {
    "supercluster": "^8.0.0"
  },
I did this through patch but yea