code: function normalizeBundleItem(items) {
    var i, len;
    if (!istype('Array', items))
      return;
    len = items.length;
    for (i = 0; i < len; i++)
      if (istype('String', items[i]))
        items[i] = { src: items[i] };
    return items;
  }
docs: Converts array items that are String to `{ src: TheString }`.
  @private
  @param {array} items - Array that contains string items to convert.
  @returns {array} An array of bundle item objects with normalized src field.