From 600149fc2b499a7fc1c1d6f4e02a05e41444cc7c Mon Sep 17 00:00:00 2001
From: Jack Cowey <jack.cowey@maglabs.net>
Date: Wed, 25 Mar 2026 13:28:34 +0000
Subject: [PATCH] fix(combo): guard against empty text in sanitize transform
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Aligns transform logic with flush — skip enqueuing when decoded text
is empty. Addresses review feedback on PR #614.
---
 open-sse/services/combo.ts | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/open-sse/services/combo.ts b/open-sse/services/combo.ts
index 829f97b988..317a9f97a4 100644
--- a/open-sse/services/combo.ts
+++ b/open-sse/services/combo.ts
@@ -534,11 +534,13 @@ export async function handleComboChat({
         const sanitize = new TransformStream({
           transform(chunk, controller) {
             const text = sanitizeDecoder.decode(chunk, { stream: true });
-            if (text.includes("<omniModel>")) {
-              const cleaned = text.replace(/\n?<omniModel>[^<]+<\/omniModel>\n?/g, "");
-              controller.enqueue(encoder.encode(cleaned));
-            } else {
-              controller.enqueue(encoder.encode(text));
+            if (text) {
+              if (text.includes("<omniModel>")) {
+                const cleaned = text.replace(/\n?<omniModel>[^<]+<\/omniModel>\n?/g, "");
+                if (cleaned) controller.enqueue(encoder.encode(cleaned));
+              } else {
+                controller.enqueue(encoder.encode(text));
+              }
             }
           },
           flush(controller) {