/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 *  strict
 * @format
 */
"use strict";

const os = require("os");

module.exports = workers => {
  const cores = os.cpus().length;
  return typeof workers === "number" && Number.isInteger(workers)
    ? Math.min(cores, workers > 0 ? workers : 1)
    : Math.max(1, Math.ceil(cores * (0.5 + 0.5 * Math.exp(-cores * 0.07)) - 1));
};