From 5ef24e9c24c65fbe7ab0cff0cce44bf8f7815d18 Mon Sep 17 00:00:00 2001
From: lukasIO <mail@lukasseiler.de>
Date: Mon, 9 Dec 2024 17:58:32 +0100
Subject: [PATCH] Prevent undefined access to engine in connection reconciler
 (#1349)

* Prevent undefined access to engine in connection reconciler

* Create red-maps-happen.md

* also transports

* set engine undefined if it's undefined2
---
 .changeset/red-maps-happen.md |  5 +++++
 src/room/Room.ts              | 10 ++++++----
 2 files changed, 11 insertions(+), 4 deletions(-)
 create mode 100644 .changeset/red-maps-happen.md

diff --git a/.changeset/red-maps-happen.md b/.changeset/red-maps-happen.md
new file mode 100644
index 0000000000..a21108df2a
--- /dev/null
+++ b/.changeset/red-maps-happen.md
@@ -0,0 +1,5 @@
+---
+"livekit-client": patch
+---
+
+Prevent undefined access to engine in connection reconciler
diff --git a/src/room/Room.ts b/src/room/Room.ts
index 6319d1768d..effcb84a64 100644
--- a/src/room/Room.ts
+++ b/src/room/Room.ts
@@ -1903,10 +1903,12 @@ class Room extends (EventEmitter as new () => TypedEmitter<RoomEventCallbacks>)
         this.log.warn('detected connection state mismatch', {
           ...this.logContext,
           numFailures: consecutiveFailures,
-          engine: {
-            closed: this.engine.isClosed,
-            transportsConnected: this.engine.verifyTransport(),
-          },
+          engine: this.engine
+            ? {
+                closed: this.engine.isClosed,
+                transportsConnected: this.engine.verifyTransport(),
+              }
+            : undefined,
         });
         if (consecutiveFailures >= 3) {
           this.recreateEngine();