diff --git a/tests/project-contract.test.mjs b/tests/project-contract.test.mjs
index 7ce5f84..195dc8d 100644
--- a/tests/project-contract.test.mjs
+++ b/tests/project-contract.test.mjs
@@ -19,6 +19,10 @@ test('overseas PDA is an independent Vue 3 app with separate packaging identity'
 	assert.match(vite, /replace\(\/\^\\\/overseas-api\//)
 	assert.match(vite, /removeHeader\('origin'\)/)
 	assert.match(vite, /removeHeader\('referer'\)/)
+	assert.match(vite, /__VUE_I18N_FULL_INSTALL__:\s*true/)
+	assert.match(vite, /__VUE_I18N_LEGACY_API__:\s*false/)
+	assert.match(vite, /__VUE_I18N_PROD_DEVTOOLS__:\s*false/)
+	assert.match(vite, /__INTLIFY_PROD_DEVTOOLS__:\s*false/)
 	assert.match(styles, /home-operation-grid[^}]*grid-template-columns:\s*repeat\(3/)
 	assert.match(styles, /home-operation[^}]*width:\s*100%/)
 	assert.doesNotMatch(styles, /home-operation-primary[^}]*grid-column:\s*1\s*\/\s*-1/)
diff --git a/vite.config.js b/vite.config.js
index 2781ecb..7ee2f8a 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -29,6 +29,12 @@ export default defineConfig(({ mode }) => {
   const overseasTarget = env.OVERSEAS_API_PROXY_TARGET || 'http://127.0.0.1:9300'
   return {
   plugins: [uni()],
+  define: {
+    __VUE_I18N_FULL_INSTALL__: true,
+    __VUE_I18N_LEGACY_API__: false,
+    __VUE_I18N_PROD_DEVTOOLS__: false,
+    __INTLIFY_PROD_DEVTOOLS__: false
+  },
   server: {
     proxy: {
       '/api': loggedProxy('auth', { target: domesticTarget, changeOrigin: true }),