if (isMaster) {
  console.info(`Master ${process.pid} is running`);

  const cores = cpus().length;
  const workers = [];
  for (let i = 0; i < cores; i++) {
    workers.push(fork());
  }

  let forks = 0;
  const master = new Telegraf(process.env.TOKEN);
  master.handleUpdate = function(update) {
    if (forks < 0) {
      forks = cores - 1;
    }
    workers[forks--].send(update);
    return Promise.resolve();
  };
  master.launch();
} else {
  console.info(`Worker ${process.pid} started`);

  const bot = require('./app');
  process.on('message', (update) => {
    bot.handleUpdate(update);
  });
}