code: function fitty(target) {
      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  
  
      // if target is a string
      return typeof target === 'string' ?
  
      // treat it as a querySelector
      fittyCreate(toArray(document.querySelectorAll(target)), options) :
  
      // create single fitty
      fittyCreate([target], options)[0];
    }
docs: fitty creation function