test: add tests

Author: AriPerkkio

.gitignore

@@ -1,4 +1,5 @@
 node_modules
 dist
 .vite-source-map-visualizer
+.custom-report-directory
 .DS_store

package.json

@@ -13,8 +13,7 @@
   ],
   "scripts": {
     "build": "rm -rf ./dist && tsc --project tsconfig.build.json",
-    "test": "tsx test/example.test.ts",
-    "open": "open .vite-source-map-visualizer/report.html",
+    "test": "vitest",
     "typecheck": "tsc --noEmit"
   },
   "packageManager": "pnpm@8.15.9",
@@ -23,8 +22,8 @@
   },
   "devDependencies": {
     "@types/node": "^22.4.1",
-    "tsx": "^4.17.0",
     "typescript": "^5.5.4",
-    "vite": "^5.4.0"
+    "vite": "^5.4.0",
+    "vitest": "^2.0.5"
   }
 }