stockfish/src/emscripten/public/uci.js

The Stockfish chess engine in Web Assembly (WASM)

const Stockfish = require("./stockfish.js");

const runRepl = async (stockfish) => {
  const readline = require("readline");
  const iface = readline.createInterface({ input: process.stdin });
  for await (const command of iface) {
    if (command == 'quit') { break; }
    stockfish.postMessage(command);
  }
  stockfish.postMessage('quit');
};

const main = async () => {
  const stockfish = await Stockfish();
  const argv = process.argv.slice(2);
  if (argv.length > 0) {
    stockfish.postMessage(argv.join(' '));
    stockfish.postMessage('quit');
    return;
  }
  runRepl(stockfish);
}

main();