async_trait creates an AsyncResovlver, that can live along-side Resolver

src/async_trait.rs

@@ -6,7 +6,7 @@ use async_trait::async_trait;
 /// The `R` type is your resource repository (a database for instance) that will be passed to the
 /// [`find`](Resolver::find) and [`endpoint`](Resolver::endpoint) functions.
 #[async_trait]
-pub trait Resolver {
+pub trait AsyncResolver {
     type Repo: Send;
     /// Returns the domain name of the current instance.
     async fn instance_domain<'a>(&self) -> &'a str;

src/lib.rs

@@ -5,16 +5,14 @@
 use reqwest::{header::ACCEPT, Client};
 use serde::{Deserialize, Serialize};
 
+mod sync_trait;
+pub use crate::sync_trait::*;
+
 #[cfg(feature = "async")]
 mod async_trait;
 #[cfg(feature = "async")]
 pub use crate::async_trait::*;
 
-#[cfg(not(feature = "async"))]
-mod sync_trait;
-#[cfg(not(feature = "async"))]
-pub use crate::sync_trait::*;
-
 #[cfg(test)]
 mod tests;