def driver(client_side: AppHarness) -> Generator[WebDriver, None, None]:
    """Get an instance of the browser open to the client_side app.

    Args:
        client_side: harness for ClientSide app

    Yields:
        WebDriver instance.
    """
    assert client_side.app_instance is not None, "app is not running"
    driver = client_side.frontend()
    try:
        yield driver
    finally:
        driver.quit()
Get an instance of the browser open to the client_side app.

    Args:
        client_side: harness for ClientSide app

    Yields:
        WebDriver instance.
    
tests/integration/test_client_storage.py