v3: port getBuyList and shared.updateStore

common/script/libs/updateStore.js

@@ -1,36 +1,31 @@
 import _ from 'lodash';
 import content from '../content/index';
 
-/*
-  Update the in-browser store with new gear. FIXME this was in user.fns, but it was causing strange issues there
- */
+// Return the list of gear items available for purchase
 
-var sortOrder = _.reduce(content.gearTypes, (function(m, v, k) {
-  m[v] = k;
-  return m;
-}), {});
+let sortOrder = _.reduce(content.gearTypes, (accumulator, val, key) => {
+  accumulator[val] = key;
+  return accumulator;
+}, {});
 
-module.exports = function(user) {
-  var changes;
-  if (!user) {
-    return;
-  }
-  changes = [];
-  _.each(content.gearTypes, function(type) {
-    var found;
-    found = _.find(content.gear.tree[type][user.stats["class"]], function(item) {
+module.exports = function updateStore (user) {
+  let changes = [];
+
+  _.each(content.gearTypes, (type) => {
+    let found = _.find(content.gear.tree[type][user.stats.class], (item) => {
       return !user.items.gear.owned[item.key];
     });
-    if (found) {
-      changes.push(found);
+
+    if (found) changes.push(found);
+  });
+
+  changes = changes.concat(_.filter(content.gear.flat, (val) => {
+    if (['special', 'mystery', 'armoire'].indexOf(val.klass) !== -1 && !user.items.gear.owned[val.key] && (val.canOwn ? val.canOwn(user) : false)) {
+      return true;
+    } else {
+      return false;
     }
-    return true;
-  });
-  changes = changes.concat(_.filter(content.gear.flat, function(v) {
-    var ref;
-    return ((ref = v.klass) === 'special' || ref === 'mystery' || ref === 'armoire') && !user.items.gear.owned[v.key] && (typeof v.canOwn === "function" ? v.canOwn(user) : void 0);
   }));
-  return _.sortBy(changes, function(c) {
-    return sortOrder[c.type];
-  });
+
+  return _.sortBy(changes, (change) => sortOrder[change.type]);
 };