TL;DR:
- C++ compiled to WASM + Web Worker astar
- Custom heuristics
- Non-blocking
- 2–3.5× faster on large grids
- Performs especially well when a path can't be found
- Demo: https://saqib-ali.com/lightspeed-astarjs/
Show HN: A WASM A* Library – 2–3.5× Faster Than Alternatives | Heykuki News