chore: add typechecking for generator

Author: chorobin

packages/router-generator/package.json

@@ -34,7 +34,7 @@
     "test:types:ts55": "node ../../node_modules/typescript55/lib/tsc.js",
     "test:types:ts56": "node ../../node_modules/typescript56/lib/tsc.js",
     "test:types:ts57": "tsc",
-    "test:unit": "vitest",
+    "test:unit": "vitest --typecheck",
     "test:build": "publint --strict && attw --ignore-rules no-resolution --pack .",
     "build": "vite build"
   },