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use cfg_if::cfg_if;cfg_if! {    if #[cfg(feature = "hydrate")] {        use wasm_bindgen::prelude::wasm_bindgen;        use leptos::*;        pub mod routes;        use routes::{App, AppProps};
        #[wasm_bindgen]        pub fn hydrate() {            console_error_panic_hook::set_once();            _ = console_log::init_with_level(log::Level::Debug);
            mount_to_body(|cx| {                view! { cx,  <App/> }            })        }    }
    else if #[cfg(feature = "ssr")] {        use wasm_bindgen::prelude::wasm_bindgen;        use leptos::*;        use leptos_router::{ServerIntegration, RouterIntegrationContext};        pub mod routes;        use routes::{App, AppProps};
        #[wasm_bindgen]        pub fn ssr(url: String) -> String {            let history = ServerIntegration { path: url };            let router_integration = RouterIntegrationContext::new(history);            render_to_string(move |cx| {                provide_context::<RouterIntegrationContext>(cx, router_integration);                view! { cx, <App/> }            })        }    }}