I have a wrangler config file with 3

{
  "$schema": "../../node_modules/wrangler/config-schema.json",
  "name": "worker-chat",
  "main": "src/index.ts",
  "compatibility_date": "2025-09-15",
  "compatibility_flags": [
     "nodejs_compat",
     "enable_nodejs_http_modules",
     "enable_nodejs_http_server_modules",
     "nodejs_compat_populate_process_env"
    ],
  "keep_vars": true,
  "workers_dev": false,
  "preview_urls": false,
  "placement": {
     "mode": "smart"
  },
  "env": {
    "local": {
      "name": "worker-chat-dev",
      "workers_dev": true,
    },
    "preview": {
      "name": "worker-chat-preview",
      "workers_dev": true,
    },
    "prod": {
      "name": "worker-chat-prod",
      "workers_dev": false,
    }
  }
}