feat: added locale ja-JP (#139)

- from ms-select PR wenzhixin/multiple-select#608

Author: ghiscoding

lib/src/locales/all-locales-index.ts

@@ -5,6 +5,7 @@ export * from './multiple-select-es-ES';
 export * from './multiple-select-fr-FR';
 export * from './multiple-select-hu-HU';
 export * from './multiple-select-it-IT';
+export * from './multiple-select-ja-JP';
 export * from './multiple-select-pt-BR';
 export * from './multiple-select-ru-RU';
 export * from './multiple-select-vi-VN';

lib/src/locales/multiple-select-ja-JP.ts

@@ -0,0 +1,32 @@
+/**
+ * Multiple Select ja-JP translation
+ * Author: Nozomi Anzai<[email protected]>
+ */
+
+import { MultipleSelectLocale, MultipleSelectLocales } from '../interfaces';
+import { MultipleSelectInstance } from '../MultipleSelectInstance';
+
+const ms =
+  typeof window !== 'undefined' && window.multipleSelect !== undefined
+    ? window.multipleSelect
+    : ({ locales: {} as MultipleSelectLocales } as Partial<MultipleSelectInstance>);
+
+(ms.locales as MultipleSelectLocales)['ja-JP'] = {
+  formatSelectAll() {
+    return '[すべて選択]';
+  },
+  formatAllSelected() {
+    return 'すべて選択';
+  },
+  formatCountSelected(count: number, total: number) {
+    return `${total} 件中 ${count} 件選択`;
+  },
+  formatNoMatchesFound() {
+    return '見つかりません';
+  },
+  formatOkButton() {
+    return '閉める';
+  },
+} as MultipleSelectLocale;
+
+export default ms.locales;