Javascript based Chess engine In one of my previous questions I asked about comparison of the strongest chess engines and got a really good answer. While there are little or no doubts that chess engines are stronger than humans, I am curious: Is there any strong javascript implementation of a chess engine that performs well (what is the ELO of the engine)?

Knowing that a lot of high level chess engines are opensource, has anyone made an effort to port something like stockfish or critter to JS?
Stockfish has been ported to Javascript:

https://github.com/exoticorn/stockfish-js