From 480cd0b8eff53e6be684bc80471432f702287f9f Mon Sep 17 00:00:00 2001
From: Debadutta Panda <debadebaduttapanda.7@gmail.com>
Date: Fri, 7 Feb 2025 02:32:50 +0530
Subject: [PATCH] Prevent connecting nodes with the same ID

---
 packages/node_modules/@node-red/editor-client/src/js/nodes.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/node_modules/@node-red/editor-client/src/js/nodes.js b/packages/node_modules/@node-red/editor-client/src/js/nodes.js
index cab3547c2..785f03744 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/nodes.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/nodes.js
@@ -3070,6 +3070,10 @@ RED.nodes = (function() {
                         })
                     }
                     targetNodes.forEach(target => {
+                        // Two nodes with the same ID cannot be connected to each other.
+                        if(sourceNode.id === target.id) {
+                            return
+                        }
                         let linkId = `${sourceNode.id}[${inLink.sourcePort}] -> ${target.id}`
                         if (!createdLinkIds.has(linkId)) {
                             createdLinkIds.add(linkId);