From 76943490787978b52fdc0e2ba1e89c22b34ea122 Mon Sep 17 00:00:00 2001
From: Hiroyasu Nishiyama <hiroyasu.nishiyama.uq@hitachi.com>
Date: Thu, 11 Jun 2020 23:00:56 +0900
Subject: [PATCH] prevent charAt call on websocket listener

---
 .../@node-red/nodes/core/network/22-websocket.html     | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/node_modules/@node-red/nodes/core/network/22-websocket.html b/packages/node_modules/@node-red/nodes/core/network/22-websocket.html
index 523dc2629..093256495 100644
--- a/packages/node_modules/@node-red/nodes/core/network/22-websocket.html
+++ b/packages/node_modules/@node-red/nodes/core/network/22-websocket.html
@@ -148,10 +148,12 @@
             if (root.slice(-1) != "/") {
                 root = root+"/";
             }
-            if (this.path.charAt(0) == "/") {
-                root += this.path.slice(1);
-            } else {
-                root += this.path;
+            if (this.path) {
+                if (this.path.charAt(0) == "/") {
+                    root += this.path.slice(1);
+                } else {
+                    root += this.path;
+                }
             }
             return root;
         },