Is there a way to check for the environment the current worker is running in?

[light moss]

Since the limit on subrequests is different depending on whether the worker is running in Bundled vs Unbound, it would be useful if there were a way to check if the worker is running in Unbound mode or Bundled mode. Is this already possible
(Ideally not looking to use the Cloudflare API)?

[limber cove]

There is not