fix: adaptor export issue

src/adaptors/deno/entry.ts

@@ -15,4 +15,6 @@ server.use("*",
 server.route("/", entry);
 
 // @ts-ignore - deno namespace
-Deno.serve(server.fetch)
+Deno.serve(server.fetch)
+
+export default server;

src/adaptors/node/entry.ts

@@ -18,4 +18,6 @@ console.log(`Listening on port http://localhost:${port}`);
 serve({
 	fetch: server.fetch,
 	port,
-});
+});
+
+export default server;

src/vite/index.ts

@@ -127,13 +127,14 @@ export default function vono(userConfig?: UserConfig): Array<Plugin> {
         if (!vono.ssr) return;
         if (check(Function, vono.adaptor.onBuild)) await vono.adaptor.onBuild();
         if (vono.prerender.routes.length > 0) {
-          const handler = await import(
+          const _handler = await import(
             pathe.join(
               vono.root,
               vono.adaptor.serverDir,
               vono.adaptor.entryName + ".js",
             )
-          ).then((m) => m.default.fetch);
+          ).then((m) => m.default);
+          const handler = _handler?.fetch ?? _handler;
           await prerender({
             handler,
             routes: vono.prerender.routes,