From 5e0ee3e8d9cdb7568dce9e0758011831e9100c3a Mon Sep 17 00:00:00 2001
From: John Barlow <jnbarlow@gmail.com>
Date: Tue, 27 Oct 2020 18:55:29 -0400
Subject: [PATCH] defensive code for when the document sometimes isn't there on
 server restarts. (#26)

---
 packages/backend/src/SocketIOConnection.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/backend/src/SocketIOConnection.ts b/packages/backend/src/SocketIOConnection.ts
index 5eec34a..aaad24e 100644
--- a/packages/backend/src/SocketIOConnection.ts
+++ b/packages/backend/src/SocketIOConnection.ts
@@ -219,6 +219,7 @@ export default class SocketIOCollaboration {
   garbageCursors = (nsp: string) => {
     const doc = this.backend.getDocument(nsp)
 
+    if (doc == null || doc == undefined) return;
     if (!doc.cursors) return
 
     const namespace = this.io.of(nsp)