decremental.js

    var mapped = gearSets.map(function (gearSet, i) {
      var countMap = JSON.parse(JSON.stringify(required.countMap));
      return {
        index: i,
        value: [
          gearSet.shoes === anyGear ? 1 : 2,
          gearSet.clothing === anyGear ? 1 : 2,
          gearSet.headgear === anyGear ? 1 : 2,

          countMap[gearSet.headgear.main]-- > 0 ? 1 : 2,
          countMap[gearSet.headgear.sub]-- > 0 ? 1 : 2,
          orderFromGearPower[gearSet.headgear.main],
          orderFromGearPower[gearSet.headgear.sub],
          gearSet.headgear.name,

          countMap[gearSet.clothing.main]-- > 0 ? 1 : 2,
          countMap[gearSet.clothing.sub]-- > 0 ? 1 : 2,
          orderFromGearPower[gearSet.clothing.main],
          orderFromGearPower[gearSet.clothing.sub],
          gearSet.clothing.name,

          countMap[gearSet.shoes.main]-- > 0 ? 1 : 2,
          countMap[gearSet.shoes.sub]-- > 0 ? 1 : 2,
          orderFromGearPower[gearSet.shoes.main],
          orderFromGearPower[gearSet.shoes.sub],
          gearSet.shoes.name
        ].join(':')
      };
    });