Calling client.end() on a Client not connected in pg@7.17.1 fails with an error message

Socket is closed

However in pg@7.18.1 the same call just hangs indefinitely. I'm using the promise-based call (without the callback) and awaiting the promise to fulfil.

Is this an expected change?

If the context matters, I have a wrapper around a Client and I'm "unit testing" that a call to its closing function throws if the wrapped client is not connected. Before I was just calling .end() on the inner client but now the test fails since the promise never fulfilled.

If the change is expected, is there a way of knowing if a given Client is connected?