message: Use sum util
diff: @@ -18,6 +18,7 @@ import StoreInventoryItem from '../inventory/StoreInventoryItem';
  import LoadoutDrawer from '../loadout/loadout-drawer';
  import { dimLoadoutService, Loadout } from '../loadout/loadout.service';
  import { RootState } from '../store/reducers';
  +import { sum } from '../util';
  import './loadoutbuilder.scss';
  import LockedArmor from './LockedArmor';
  @@ -230,7 +231,7 @@ function process(filteredItems: { [bucket: number]: D2Item[] }) {
  const tiers = _.each(
  _.groupBy(Array.from(tiersSet.keys()), (tierString: string) => {
  - return tierString.split('/').reduce((a, b) => a + parseInt(b, 10), 0);
  + return sum(tierString.split('/'), (num) => parseInt(num, 10));
  }),
  (tier) => {
  tier.sort().reverse();
  