use extension_traits::extension;

#[extension(pub trait OptionExt)]
impl<S> Option<S> {
    async fn map_async<M, Fut: Future<Output = M>, F: FnOnce(S) -> Fut>(self, f: F) -> Option<M> {
        match self {
            Some(s) => Some(f(s).await),
            None => None,
        }
    }
}