Apply suggestions from code review

Co-authored-by: Andrew Branch <[email protected]>

Author: jablko

packages/deprecate/package.json

@@ -17,5 +17,6 @@
   "devDependencies": {
     "@types/libnpmsearch": "^2.0.3",
     "@types/yargs": "^17.0.10"
-  }
+  },
+  "private": true
 }