fix: make Cloneable pub crate

viz-core/src/handler.rs

@@ -3,7 +3,6 @@
 use crate::{BoxFuture, Future};
 
 mod cloneable;
-pub use cloneable::{BoxCloneable, Cloneable};
 
 mod after;
 pub use after::After;

viz-core/src/handler/boxed.rs

@@ -1,8 +1,13 @@
-use crate::{handler::BoxCloneable, BoxFuture, Handler, Request, Response, Result};
+use std::fmt;
 
+use super::cloneable::BoxCloneable;
+use crate::{BoxFuture, Handler, Request, Response, Result};
+
+/// A [`Clone`] + [`Send`] boxed [`Handler`].
 pub struct BoxHandler<I = Request, O = Result<Response>>(BoxCloneable<I, O>);
 
 impl<I, O> BoxHandler<I, O> {
+    /// Creates a new `BoxHandler`.
     pub fn new<H>(h: H) -> Self
     where
         H: Handler<I, Output = O> + Send + Clone + 'static,
@@ -30,3 +35,9 @@ impl<I, O> From<BoxCloneable<I, O>> for BoxHandler<I, O> {
         Self(value)
     }
 }
+
+impl<I, O> fmt::Debug for BoxHandler<I, O> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("BoxHandler").finish()
+    }
+}

viz-core/src/handler/cloneable.rs

@@ -1,8 +1,8 @@
 use super::Handler;
 
-pub type BoxCloneable<Input, Output> = Box<dyn Cloneable<Input, Output = Output> + Send>;
+pub(crate) type BoxCloneable<Input, Output> = Box<dyn Cloneable<Input, Output = Output> + Send>;
 
-pub trait Cloneable<Input>: Handler<Input> {
+pub(crate) trait Cloneable<Input>: Handler<Input> {
     fn clone_box(&self) -> BoxCloneable<Input, Self::Output>;
 }
 

viz-core/src/handler/try_handler.rs

@@ -21,4 +21,4 @@ where
     }
 }
 
-pub trait TryHandlerExt<I>: TryHandler<I> {}
+pub(crate) trait TryHandlerExt<I>: TryHandler<I> {}