Fix: Duplicated user during reconnect

Author: salmonkarp

source/sharedb-ace-binding.ts

@@ -344,17 +344,17 @@ class SharedbAceBinding {
       try {
         this.cursorManager?.removeCursor(id);
         // eslint-disable-next-line no-empty
-      } catch {}
+      } catch { }
 
       try {
         this.selectionManager?.removeSelection(id);
         // eslint-disable-next-line no-empty
-      } catch {}
+      } catch { }
 
       try {
         this.radarManager?.removeView(id);
         // eslint-disable-next-line no-empty
-      } catch {}
+      } catch { }
 
       if (id in this.connectedUsers) {
         delete this.connectedUsers[id];
@@ -363,7 +363,9 @@ class SharedbAceBinding {
       return;
     }
 
-    this.connectedUsers[id] = update.user;
+    if (!this.connectedUsers[id]) {
+      this.connectedUsers[id] = update.user;
+    }
 
     if (this.cursorManager && update.cursorPos) {
       try {
@@ -464,6 +466,17 @@ class SharedbAceBinding {
    */
   onRemoteReload = () => {
     this.logger.log('*remote*: reloading document');
+    // Destroy local presence if it exists to prevent
+    // submission of local presence again during initialization
+    if (this.localPresence) {
+      try {
+        this.logger.log('*remote*: destroying local presence');
+        this.localPresence.destroy();
+        this.localPresence = undefined;
+      } catch (error) {
+        console.warn("Error destroying local presence:", error);
+      }
+    }
     this.setInitialValue();
   };
 }