change the i18n files to 'xx-XX'

assets/i18n/en-US.json

@@ -0,0 +1,3 @@
+{
+  "Fighter Power ": "FP "
+}

assets/i18n/ja-JP.json

@@ -0,0 +1,19 @@
+{
+  "select fleet": "选择舰队",
+  "title": "タイトル",
+  "save": "保存する",
+  "Organization Records": "編成日記",
+  "add record": "记录编成",
+  "keywords": "キーワード",
+  "Total Lv ": "合計 Lv ",
+  "Avg Lv ": "平均 Lv ",
+  "Fighter Power ": "制空 ",
+  "LOS ": "索敵 ",
+  " Autumn": " 秋式",
+  " Old": " 旧式",
+  "save error": "保存错误",
+  "The title is already exist.": "标题已存在",
+  "Delete": "削除する",
+  "Records": "记录",
+  "Add": "添加"
+}

assets/i18n/zh-CN.json

@@ -0,0 +1,33 @@
+{
+  "Select fleet": "选择舰队",
+  "Title": "标题",
+  "Save": "保存",
+  "Organization Records": "编成日记",
+  "Add Record": "记录编成",
+  "Keywords": "关键词",
+  "Total Lv ": "总 Lv ",
+  "Avg Lv ": "均 Lv ",
+  "Fighter Power ": "制空 ",
+  "LOS ": "索敌 ",
+  " Autumn": " 秋式",
+  " Old": " 旧式",
+  "Error": "错误",
+  "The title is already exist.": "标题已存在。",
+  "Delete": "删除",
+  "Records": "记录",
+  "Add": "添加",
+  "Edit": "编辑",
+  "Add tags": "添加条件",
+  "Ship type": "舰种",
+  "Do not add": "不能带",
+  "Ship name": "舰名",
+  "Slot items": "装备",
+  "Number": "数量",
+  "Import": "导入",
+  "Export": "导出",
+  "Import code": "导入代码",
+  "Code": "代码",
+  "Incorrect code.": "代码不正确，无法导入。",
+  "Select title": "选择标题",
+  "Select type": "选择类型"
+}

assets/i18n/zh-TW.json

@@ -0,0 +1,19 @@
+{
+  "select fleet": "選擇艦隊",
+  "title": "標題",
+  "save": "保存",
+  "Organization Records": "編成日記",
+  "add record": "記錄編成",
+  "keywords": "關鍵詞",
+  "Total Lv ": "總 Lv ",
+  "Avg Lv ": "均 Lv ",
+  "Fighter Power ": "制空 ",
+  "LOS ": "索敵 ",
+  " Autumn": " 秋式",
+  " Old": " 舊式",
+  "save error": "保存錯誤",
+  "The title is already exist.": "標題已存在",
+  "Delete": "刪除",
+  "Records": "記錄",
+  "Add": "增加"
+}

index.cjsx

@@ -6,8 +6,8 @@ i18n = require './node_modules/i18n'
 
 # i18n configure
 i18n.configure({
-    locales: ['en_US', 'ja_JP', 'zh_CN', 'zh_TW'],
-    defaultLocale: 'zh_CN',
+    locales: ['en-US', 'ja-JP', 'zh-CN', 'zh-TW'],
+    defaultLocale: 'zh-CN',
     directory: join(__dirname, 'assets', 'i18n'),
     updateFiles: false,
     indent: '\t',