From 4a72580b2477c91883680fd03adc8e31ef85f48f Mon Sep 17 00:00:00 2001
From: Jaanus Sellin <sellinjaanus@gmail.com>
Date: Fri, 14 Feb 2025 12:28:43 +0200
Subject: [PATCH] fix: return undefined from delta if no events (#9311)

Nameprefix can remove events from result, so we should send 304 in that
case.
---
 .../delta/client-feature-toggle-delta.ts                      | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts b/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts
index b3e9389054..a291e7dfc5 100644
--- a/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts
+++ b/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts
@@ -201,6 +201,10 @@ export class ClientFeatureToggleDelta extends EventEmitter {
                 namePrefix,
             );
 
+            if (events.length === 0) {
+                return undefined;
+            }
+
             const response: ClientFeaturesDeltaSchema = {
                 events: events.map((event) => {
                     if (event.type === 'feature-removed') {