Update tsconfig.json

Author: fisker

tsconfig.json

@@ -11,5 +11,10 @@
     "noEmit": true,
     "allowImportingTsExtensions": true
   },
-  "include": ["src/**/*.ts", "tests/**/*.ts", "vitest.config.ts"]
+  "include": [
+    "src/**/*.ts",
+    "tests/**/*.ts",
+    "vitest.config.ts",
+    "tsdown.config.ts"
+  ]
 }