text: 'use strict';
  
  exports.type = 'perItem';
  
  exports.active = true;
  
  exports.description = 'merges multiple paths in one if possible';
  
  exports.params = {
      collapseRepeated: true,
      leadingZero: true,
      negativeExtraSpace: true
  };
  
  var path2js = require('./_path.js').path2js,
      js2path = require('./_path.js').js2path,
      intersects = require('./_path.js').intersects;
  
  /**
   * Merge multiple Paths into one.
   *
   * @param {Object} item current iteration item
   * @return {Boolean} if false, item will be filtered out
   *
   * @author Kir Belevich, Lev Solntsev
   */
  exports.fn = function(item, params) {
  
      if (!item.isElem() || item.isEmpty()) return;
  
      var prevContentItem = null,
          prevContentItemKeys = null;
  
      item.content = item.content.filter(function(contentItem) {
  
          if (prevContentItem &&
              prevContentItem.isElem('path') &&
              prevContentItem.isEmpty() &&
              prevContentItem.hasAttr('d') &&
              contentItem.isElem('path') &&
              contentItem.isEmpty() &&
              contentItem.hasAttr('d')
          ) {
  
              if (!prevContentItemKeys) {
                  prevContentItemKeys = Object.keys(prevContentItem.attrs);
              }
  
              var contentItemAttrs = Object.keys(contentItem.attrs),
                  equalData = prevContentItemKeys.length == contentItemAttrs.length &&
                      contentItemAttrs.every(function(key) {
                          return key == 'd' ||
                              prevContentItem.hasAttr(key) &&
                              prevContentItem.attr(key).value == contentItem.attr(key).value;
                      }),
                  prevPathJS = path2js(prevContentItem),
                  curPathJS = path2js(contentItem);
  
              if (equalData && !intersects(prevPathJS, curPathJS)) {
                  js2path(prevContentItem, prevPathJS.concat(curPathJS), params);
                  return false;
              }
          }
  
          prevContentItem = contentItem;
          prevContentItemKeys = null;
          return true;
  
      });
  
  };
  