const utils = (function() {
  'use strict';

  function capitalize(string, onlyFirstChar) {
    const cap = s => s.charAt(0).toUpperCase() + s.substring(1).toLowerCase();
    if(onlyFirstChar === 1) {
      return cap(string);
    } else {
      const arr = string.split(' ');
      arr.forEach((s, i, a) => a[i] = cap(s));
      return arr.join(' ');
    }
  }

  return {
    capitalize
  };
})();