Altra conversione in Typescript , partendo da un progetto di esempio funzionante...

src/store/index.ts

@@ -1,41 +1,13 @@
-import Vue from 'vue'
-import Vuex from 'vuex'
+import Vue from 'vue';
+import Vuex from 'vuex';
 
-//import glob from './modules/glob';
-
-import {IUserState} from './types'
+import { IUserState } from '@/types';
 
 Vue.use(Vuex);
 
 export interface IRootState {
-    //app: IAppState;
-    user: IUserState;
-    //tagsView: ITagsViewState;
-    role: IRootState;
+  user: IUserState;
+  role: IRootState;
 }
 
-//const debug = process.env.NODE_ENV !== 'production';
-
-export default new Vuex.Store<IRootState>({
-});
-
-
-/*
-Vue.filter('time', timestamp => {
-  return new Date(timestamp).toLocaleTimeString()
-});
-*/
-/*
-export default new Vuex.Store({
-    state: {
-        version: '1.0.0',
-    },
-    modules: {
-        glob,
-        user,
-    },
-
-    //strict: debug,
-    //plugins: debug ? [createLogger()] : []
-});
-*/
+export default new Vuex.Store<IRootState>({});