feat: use vuex 4 for vue3

src/store/index.js

@@ -1,5 +1,4 @@
-import Vue from 'vue'
-import Vuex from 'vuex'
+import { createStore } from 'vuex'
 import {
 	CURRENT_LIST,
 	ERROR_MESSAGE,
@@ -21,9 +20,7 @@ import labels from './modules/labels'
 
 import ListService from '../services/list'
 
-Vue.use(Vuex)
-
-export const store = new Vuex.Store({
+export const store = createStore({
 	strict: import.meta.env.DEV,
 	modules: {
 		config,

src/types/shims-vue.d.ts

@@ -2,3 +2,18 @@ declare module '*.vue' {
   import Vue from 'vue'
   export default Vue
 }
+
+// https://next.vuex.vuejs.org/guide/migrating-to-4-0-from-3-x.html#typescript-support
+import { ComponentCustomProperties } from 'vue'
+import { Store } from 'vuex'
+
+declare module '@vue/runtime-core' {
+  // Declare your own store states.
+  interface State {
+    count: number
+  }
+
+  interface ComponentCustomProperties {
+    $store: Store<State>
+  }
+}