From c11684a9cff002dea5d5b362680341a786e68953 Mon Sep 17 00:00:00 2001
From: Enrico Ros <enrico.ros@gmail.com>
Date: Thu, 23 Oct 2025 18:07:16 -0700
Subject: [PATCH] server: improve error formatting, removing unneeded stacks

---
 src/server/trpc/trpc.server.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/server/trpc/trpc.server.ts b/src/server/trpc/trpc.server.ts
index 68949b156..31753d703 100644
--- a/src/server/trpc/trpc.server.ts
+++ b/src/server/trpc/trpc.server.ts
@@ -48,10 +48,14 @@ const t = initTRPC.context<typeof createTRPCFetchContext>().create({
   // server transformer - serialize: -> client, deserialize: <- client
   transformer: transformer,
   errorFormatter({ shape, error }) {
+
+    // Important: remove the 'stack' from the error data to avoid leaking internals and shorten the payload
+    const { stack, ...nonStackData } = shape.data;
+
     return {
       ...shape,
       data: {
-        ...shape.data,
+        ...nonStackData,
         zodError:
           error.cause instanceof z.ZodError ? z.treeifyError(error.cause) : null,
       },