diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -34,6 +34,7 @@
     "typescript": "^5.0.4",
     "underscore": "^1.13.6",
     "vite": "^4.3.7",
-    "vite-plugin-rewrite-all": "^1.0.1"
+    "vite-plugin-rewrite-all": "^1.0.1",
+    "vitest": "^0.31.1"
   }
 }