Detect when a running textual app is being served in a browser (via textual serve or textual-web)

[dontascii]

I have been searching the docs because I seem to remember a method/attribute/property that I can use to check if a running textual app is being served in a browser or not.

I am using app.suspend() to run an interactive, external cmd in my textual app. app.suspend() is not supported when running in the browser and the app just dies/quits with no explanation, from the user's perspective. I'd like to check if I'm running in a browser and prevent the sudden and abrupt death of my textual app.

1. Can I use the app.get_driver_class() method to detect if I'm running in a browser?
2. Is there a better way?

Thanks!

[dontascii]

I looked at the source code and realized that App.suspend() already checks the Driver's can_suspend property and throws SuspendNotSupported. Catching SuspendNotSupported seems like the best option.