Подключаем работу с Vuex

client/store/modules/uistate.js

@@ -0,0 +1,25 @@
+// initial state
+const state = {
+  asideBarCollapse: false,
+};
+
+// getters
+const getters = {};
+
+// actions
+const actions = {};
+
+// mutations
+const mutations = {
+  setAsideBarCollapse(state, value) {
+    state.asideBarCollapse = value;
+  },
+};
+
+export default {
+  namespaced: true,
+  state,
+  getters,
+  actions,
+  mutations
+};