Drop enum, use DenoError

src/http.rs

@@ -29,16 +29,11 @@ pub fn get_client() -> Client<Connector, hyper::Body> {
   Client::builder().build(c)
 }
 
-enum HyperOrIOError {
-  IO(io::Error),
-  Hyper(hyper::Error),
-}
-
 fn response_future(
   response: hyper::Response<hyper::Body>,
-) -> impl Future<Item = String, Error = HyperOrIOError> {
+) -> impl Future<Item = String, Error = DenoError> {
   if !response.status().is_success() {
-    return Either::A(futures::future::err(HyperOrIOError::IO(io::Error::new(
+    return Either::A(futures::future::err(DenoError::from(io::Error::new(
       io::ErrorKind::NotFound,
       format!("module not found"),
     ))));
@@ -48,7 +43,7 @@ fn response_future(
       .into_body()
       .concat2()
       .map(|body| String::from_utf8(body.to_vec()).unwrap())
-      .map_err(|err| HyperOrIOError::Hyper(err)),
+      .map_err(|err| DenoError::from(err)),
   )
 }
 
@@ -59,13 +54,9 @@ pub fn fetch_sync_string(module_name: &str) -> DenoResult<String> {
   let client = get_client();
   let fetch_future = client
     .get(url)
-    .map_err(|err| HyperOrIOError::Hyper(err))
+    .map_err(|err| DenoError::from(err))
     .and_then(response_future);
-  match tokio_util::block_on(fetch_future) {
-    Ok(s) => Ok(s),
-    Err(HyperOrIOError::Hyper(err)) => Err(DenoError::from(err)),
-    Err(HyperOrIOError::IO(err)) => Err(DenoError::from(err)),
-  }
+  tokio_util::block_on(fetch_future)
 }
 
 /* TODO(ry) Re-enabled this test. Disabling to work around bug in #782.