text: /**
   * Checks given arguments whether they are functions.
   * In case of several argumetns, all of them should be functions to get a true.
   * Otherwise or if no arguments given, function will return false.
   * @param  {...any} args Arguments to check.
   * @returns {boolean} true if all given arguments are functions, otherwise false.
   */
  module.exports = (...args) => (args.length
    ? args.every((a) => a && typeof a === 'function')
    : false
  );
  