Update vuex-store.md

Author: yuushimizu

es/guide/vuex-store.md

@@ -70,9 +70,9 @@ export const mutations = {
 
 Then, you can have a `store/todos.js` file:
 ```js
-export const state = {
+export const state = () => ({
   list: []
-}
+})
 
 export const mutations = {
   add (state, text) {

fr/guide/vuex-store.md

@@ -55,9 +55,9 @@ Nous pouvons alors utiliser `this.$store` dans nos composants:
 Si vous voulez cette option, exportez le `state`, les mutations et les actions dans `store/index.js` au lieu de l'instance `store`:
 
 ```js
-export const state = {
+export const state = () => ({
   counter: 0
-}
+})
 
 export const mutations = {
   increment (state) {
@@ -68,9 +68,9 @@ export const mutations = {
 
 Puis, vous pouvez avoir `store/todos.js`:
 ```js
-export const state = {
+export const state = () => ({
   list: []
-}
+})
 
 export const mutations = {
   add (state, text) {

ja/guide/vuex-store.md

@@ -57,9 +57,9 @@ export default store
 このオプションを使いたいときは、ストアインスタンスの代わりに、`store/index.js` 内でストア、ミューテーション、アクションをエクスポートします:
 
 ```js
-export const state = {
+export const state = () => ({
   counter: 0
-}
+})
 
 export const mutations = {
   increment (state) {
@@ -71,9 +71,9 @@ export const mutations = {
 また、次のような `store/todos.js` ファイルを作成できます:
 
 ```js
-export const state = {
+export const state = () => ({
   list: []
-}
+})
 
 export const mutations = {
   add (state, text) {

ko/guide/vuex-store.md

@@ -56,9 +56,9 @@ export default store
 만약 모듈 모드를 원한다면 `store/index.js` 파일에 store 인스턴스 대신 state와 mutaions, actions를 export 합니다:
 
 ```js
-export const state = {
+export const state = () => ({
   counter: 0
-}
+})
 
 export const mutations = {
   increment (state) {
@@ -69,9 +69,9 @@ export const mutations = {
 
 이제 `store/todos.js` 파일을 만들 수 있습니다:
 ```js
-export const state = {
+export const state = () => ({
   list: []
-}
+})
 
 export const mutations = {
   add (state, text) {

ru/guide/vuex-store.md

@@ -57,9 +57,9 @@ export default store
 Если вы хотите использовать этот подход, экспортируйте в `store/index.js` состояние, мутации и действия, а не экземпляр хранилища:
 
 ```js
-export const state = {
+export const state = () => ({
   counter: 0
-}
+})
 
 export const mutations = {
   increment (state) {
@@ -70,9 +70,9 @@ export const mutations = {
 
 Предположим, у нас есть модуль `store/todos.js`:
 ```js
-export const state = {
+export const state = () => ({
   list: []
-}
+})
 
 export const mutations = {
   add (state, text) {

zh/guide/vuex-store.md

@@ -59,9 +59,9 @@ export default store
 使用**状态树模块化**的方式，`store/index.js` 不需要返回 Vuex.Store 实例，而应该直接将 `state`、`mutations` 和 `actions` 暴露出来：
 
 ```js
-export const state = {
+export const state = () => ({
   counter: 0
-}
+})
 
 export const mutations = {
   increment (state) {
@@ -73,9 +73,9 @@ export const mutations = {
 其他的模块文件也需要采用类似的方式，如 `store/todos.js` 文件：
 
 ```js
-export const state = {
+export const state = () => ({
   list: []
-}
+})
 
 export const mutations = {
   add (state, text) {