feat: tests

Author: AmirSa12

package.json

@@ -3,16 +3,18 @@
   "version": "0.0.0",
   "description": "",
   "main": "index.js",
+  "type": "module",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "vitest"
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
   "devDependencies": {
     "@types/node": "^22.7.4",
     "cac": "^6.7.14",
-    "tsx": "^4.19.1"
+    "tsx": "^4.19.1",
+    "vitest": "^2.1.3"
   },
   "dependencies": {
     "mri": "^1.2.0"