# HG changeset patch
# User drewp@bigasterisk.com
# Date 2023-05-30 07:59:20
# Node ID c070f46c07614a2e76b299108e21b645756f9d1f
# Parent  0a11698fecc4627b29c7eb578a3809d00fbb7bd6

you can ask to apply empty patch and it will no-op

diff --git a/light9/web/SyncedGraph.ts b/light9/web/SyncedGraph.ts
--- a/light9/web/SyncedGraph.ts
+++ b/light9/web/SyncedGraph.ts
@@ -156,12 +156,12 @@ export class SyncedGraph {
       log("not connected-- dropping patch");
       return;
     }
-    if (patch.isEmpty()) throw "should not get to this point with empty patch";
-
-    this._applyPatch(patch);
-    if (this.client) {
-      log("sending patch:\n", patch.dump());
-      this.client.sendPatch(patch);
+    if (!patch.isEmpty()) {
+      this._applyPatch(patch);
+      if (this.client) {
+        log("sending patch:\n", patch.dump());
+        this.client.sendPatch(patch);
+      }
     }
     console.timeEnd("applyAndSendPatch");
   }