Test stockfish performance

test.js

#!/usr/bin/env node
var child_process = require('child_process');
var stockfish = child_process.spawn('time', [ './stockfish' ]);
stockfish.stderr.setEncoding('ascii');
stockfish.stderr.on('data', function(data) {
    console.error(data.replace(/\n$/, ''));
});
stockfish.stdout.setEncoding('ascii');
var stockfish_write = function(cmd) {
    console.log(cmd);
    stockfish.stdin.write(cmd + '\n');
};
stockfish_write('uci');
stockfish.stdout.on('data', function(data) {
    console.log(data.replace(/\n$/, ''));
    if(data.match(/^uciok/m)) {
        stockfish_write('position fen r1bqkbnr/pp2pppp/2n5/2ppP3/3P4/3B1N2/PPP2PPP/RNBQK2R b KQkq - 3 5');
        stockfish_write('isready');
    } else if(data.match(/^readyok/m)) {
        stockfish_write('go depth 14');
    } else if(data.match(/^bestmove/m)) {
        stockfish_write('quit');
        stockfish.stdin.end();
    }
});
stockfish.on('exit', function(code) {
    console.error('stockfish exited with code ' + code);
});