Detect server restart with --watch ?

[alexgleason]

I am trying to call pglite.close() before the process exits to avoid corrupting my database, but every time I edit my code with --watch it gets corrupted and I have to delete/recreate my database.

I used Deno.addSignalListener('SIGINT', ...) to clean up (and also added SIGTERM, SIGHUP, etc), but I can't figure out how to detect when the server will restart due to a code change when using --watch. I need to also call my cleanup function in that case. I think? I'm not completely sure if this is the issue or I'm running into a different bug.

Any ideas?

[bartlomieju]

Converted to an issue at #25609, let's continue there.