Fix error

Author: lxsmnsyc

packages/start/src/server/server-functions-shared.ts

@@ -112,5 +112,5 @@ export async function extractBody(instance: string, client: boolean, source: Req
       return await clone.bytes();
   }
 
-  throw new Error("Unknown body format");
+  return undefined;
 }

packages/start/src/server/server-runtime.ts

@@ -84,18 +84,14 @@ async function fetchServerFunction(
   ) {
     if (response.body) {
       /* @ts-ignore-next-line */
-      response.customBody = () => {
-        if (import.meta.env.SEROVAL_MODE === "js") {
-          return deserializeJSStream(instance, response.clone());
-        }
-        return deserializeJSONStream(response.clone());
+      response.customBody = async () => {
+        return await extractBody(instance, true, response.clone())
       };
     }
     return response;
   }
 
-  const clone = response.clone();
-  const result = await extractBody(instance, true, clone);
+  const result = await extractBody(instance, true, response.clone());
   if (response.headers.has("X-Error")) {
     throw result;
   }