try fixing storybook

packages/frontend/.storybook/preload-locale.ts

@@ -1,9 +1,11 @@
 import { writeFile } from 'node:fs/promises';
 import { resolve } from 'node:path';
-import * as locales from '../../../locales';
 
-writeFile(
+(async () => {
+	const { default: locales } = await import('../../../locales/index.js');
+	await writeFile(
 		resolve(__dirname, 'locale.ts'),
 		`export default ${JSON.stringify(locales['ja-JP'], undefined, 2)} as const;`,
 		'utf8',
-)
+	)
+})();