Connectivity monitor using AsyncThrowingStream.

NetworkMonitor.swift

func monitorChanges() async throws {
    let stream = makeStream()
    for try await status in stream {
        self.status = status
    }
}

private func makeStream() -> AsyncThrowingStream<Status, Error> {
    AsyncThrowingStream { continuation in
        let monitor = NWPathMonitor()
        monitor.pathUpdateHandler = { path in
            continuation.yield(Status(path: path))
        }
        monitor.start(queue: DispatchQueue.global(qos: .background))
        
        continuation.onTermination = { @Sendable _ in
            monitor.cancel()
        }
    }
}