Function tauri_react::command_handler

pub fn command_handler<T: ApplicationState + 'static>(
    webview: &mut Webview<'_>, 
    arg: &str, 
    state: &'static Lazy<Arc<dyn StoreState<T>>>, 
    commands: &'static Lazy<HashMap<String, Box<dyn Fn(T, Value) -> Result<T> + Send + Sync + 'static>>>
) -> Result<(), String>