Rendering server-side or browser-side

To differentiate rendering on the server and in the browser:

    use vertigo::{dom, get_driver};

    let place = if get_driver().is_browser() {
        "in the browser"
    } else {
        "on the server"
    };

    dom! {
        <div>
            "I'm " {place}
        </div>
    }

This is useful when routing. For a page which requires an authentication, it's better to not render anything unless the browser checks for a cookie.

    use vertigo::{dom, get_driver};

    fn get_username_from_cookie() -> Option<String> {
        unimplemented!()
    }

    if get_driver().is_browser() {
        if let Some(username) = get_username_from_cookie() {
            dom! { <div>"Logged in as user " {username}</div> }
        } else {
            dom! { <div>"Not logged in"</div> }
        }
    } else {
        dom! { <div>"Loading..."</div> }
    }