Move time travelers store to separate module

common/script/src/content/time-traveler-store.js

@@ -0,0 +1,15 @@
+import {keys, reduce} from 'lodash';
+import mystery from './mystery-sets';
+
+function timeTravelerStore(owned) {
+  var ownedKeys = keys((typeof owned.toObject === "function" ? owned.toObject() : void 0) || owned);
+  return reduce(mystery, (m, v, k) => {
+    if (k === 'wondercon' || ~ownedKeys.indexOf(v.items[0].key)) {
+      return m;
+    }
+    m[k] = v;
+    return m;
+  }, {});
+};
+
+export default timeTravelerStore;