don't need import assertion for json

workbench/babel.config.js

@@ -5,6 +5,5 @@ module.exports = {
   ],
   plugins: [
     '@babel/plugin-transform-runtime',
-    '@babel/plugin-syntax-import-assertions',
   ],
 };

workbench/src/main/i18n/i18n.js

@@ -1,7 +1,7 @@
 import i18n from "i18next";
 
-import es_messages from './es.json' assert { type: "json" };
-import * as zh_messages from './zh.json';
+import es_messages from './es.json';
+import zh_messages from './zh.json';
 
 i18n
   .init({