Подключаем работу с Vuex

client/store/index.js

@@ -0,0 +1,14 @@
+import Vue from 'vue';
+import Vuex from 'vuex';
+import uistate from './modules/uistate';
+
+Vue.use(Vuex);
+
+const debug = process.env.NODE_ENV !== 'production';
+
+export default new Vuex.Store({
+  modules: {
+    uistate
+  },
+  strict: debug
+});