Deploy to Cloudflare produces invalid wrangler.json configuration

{
   /* ... */
   "d1_bknddatabases": [
      {
         "binding": "DB",
         "bknddatabase_name": "bknddata",
         "bknddatabase_id": "<redacted>"
      }
   ],
   "r2_bkndbuckets": [
      {
         "binding": "BUCKET",
         "bkndbucket_name": "bkndbucket"
      }
   ]
}