How to detect when --watch flag has been passed to `deno run` programatically?

I am writing a small cli script, and I have a few bits of code that do not play nicely with deno run --watch <script>deno run --watch <script>. (e.g. Deno.addSignalListener('SIGINT', graceful_shutdown)Deno.addSignalListener('SIGINT', graceful_shutdown). What I want to do is only set up that listener when I am running my cli app in 'production mode'. E.g. while I am developing the cli app with --watch--watch I do not want to set up shutdown listeners. Is there a way to accomplish this with the DenoDeno global perhaps? My current workaround is to pass some custom flag to my cli script when I am in development, like --mode=development--mode=development or --no-signal--no-signal, but this is a bit confusing for users because this flag is only important for development.