From 755393a7305a430b88c225fa5d199d91020e8320 Mon Sep 17 00:00:00 2001
From: Ingo Fischer <github@fischer-ka.de>
Date: Fri, 20 Dec 2024 23:27:51 +0100
Subject: [PATCH] Fixes MDNS exception (#1547)

---
 packages/protocol/src/mdns/MdnsScanner.ts | 41 ++++++++++++-----------
 1 file changed, 22 insertions(+), 19 deletions(-)

diff --git a/packages/protocol/src/mdns/MdnsScanner.ts b/packages/protocol/src/mdns/MdnsScanner.ts
index e47480545..bac0bd401 100644
--- a/packages/protocol/src/mdns/MdnsScanner.ts
+++ b/packages/protocol/src/mdns/MdnsScanner.ts
@@ -782,25 +782,28 @@ export class MdnsScanner implements Scanner {
             }
         }
 
-        return {
-            operational: combinedAnswers.operational
-                ? Object.fromEntries(
-                      Object.entries(combinedAnswers.operational).map(([recordType, records]) => [
-                          recordType,
-                          Array.from(records.values()),
-                      ]),
-                  )
-                : undefined,
-            commissionable: combinedAnswers.commissionable
-                ? Object.fromEntries(
-                      Object.entries(combinedAnswers.commissionable).map(([recordType, records]) => [
-                          recordType,
-                          Array.from(records.values()),
-                      ]),
-                  )
-                : undefined,
-            addresses: combinedAnswers.addresses,
-        };
+        const result: StructuredDnsAnswers = {};
+        if (combinedAnswers.operational) {
+            result.operational = Object.fromEntries(
+                Object.entries(combinedAnswers.operational).map(([recordType, records]) => [
+                    recordType,
+                    Array.from(records.values()),
+                ]),
+            );
+        }
+        if (combinedAnswers.commissionable) {
+            result.commissionable = Object.fromEntries(
+                Object.entries(combinedAnswers.commissionable).map(([recordType, records]) => [
+                    recordType,
+                    Array.from(records.values()),
+                ]),
+            );
+        }
+        if (combinedAnswers.addresses) {
+            result.addresses = combinedAnswers.addresses;
+        }
+
+        return result;
     }
 
     /**