normalize_slot_hasNormalizedSlot = function hasNormalizedSlot(names) {
  var $scopedSlots = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var $slots = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
  // Ensure names is an array
  names = concat(names).filter(Boolean); // Returns true if the either a $scopedSlot or $slot exists with the specified name

  return names.some(function (name) {
    return $scopedSlots[name] || $slots[name];
  });
}
Returns true if either scoped or unscoped named slot exists

@param {String, Array} name or name[]
@param {Object} scopedSlots
@param {Object} slots
@returns {Array|undefined} VNodes