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JavaScript closes the window using the close() call.
I'm trying to determine the moment when a window is closed. page.is_closed() doesn't work, it shows False both before and after the window is closed.
I found a way to determine this using the following code:

with new_page.expect_event("close") as event_info:
          pass

This code snippet waits for the window to close on its own, but during execution, a message is displayed on the screen:

Future exception was never retrieved
future: <Future finished exception=Error('Target page, context or browser has been closed')>
playwright._impl._api_types.Error: Target page, context or browser has been closed

What is the correct way to track window closing? How can I avoid the error messages in my code?