Printing a warning when multiple instances of MSW are running at the same time

[LeonGeldsch]

I am using Playwright with MSW to test my application. I have also set up a script that starts my dev server with MSW running so that I can debug more easily. Now, I've have had it happen multiple times, that I forgot that my dev server was running in mocked mode and I subsequently spent way too much time debugging why my overwrites with worker.use() are not working.

Does anyone have an idea on how I could print a warning to the console if multiple MSW instances are running at the same time?