For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.
These benchmarks measure throughput in controlled scenarios — real-world performance depends on your specific use case. The difference between Node.js and browser gains reflects the distinct optimization paths each environment takes for Web streams.
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