From ca44af06258298a3f8fb5142838d577366c22358 Mon Sep 17 00:00:00 2001
From: Ben Hardill <hardillb@gmail.com>
Date: Mon, 25 Jan 2021 10:56:23 +0000
Subject: [PATCH] Prevent crash when coreNodesDir is empty (#2831)

* Fix for HTTP-Request not sending body for GET

Background in SO question:
https://stackoverflow.com/q/60356824/504554

* Prevent crash when coreNodesDir points to empty dir

This should prevent a crash when you point to an empty core nodes
directory.

* Matching upstream master
---
 .../@node-red/registry/lib/library.js         | 24 ++++++++++---------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/packages/node_modules/@node-red/registry/lib/library.js b/packages/node_modules/@node-red/registry/lib/library.js
index a8ca8a775..c45282b89 100644
--- a/packages/node_modules/@node-red/registry/lib/library.js
+++ b/packages/node_modules/@node-red/registry/lib/library.js
@@ -28,17 +28,19 @@ function getFlowsFromPath(path) {
         fs.readdir(path,function(err,files) {
             var promises = [];
             var validFiles = [];
-            files.forEach(function(file) {
-                var fullPath = fspath.join(path,file);
-                var stats = fs.lstatSync(fullPath);
-                if (stats.isDirectory()) {
-                    validFiles.push(file);
-                    promises.push(getFlowsFromPath(fullPath));
-                } else if (/\.json$/.test(file)){
-                    validFiles.push(file);
-                    promises.push(Promise.resolve(file.split(".")[0]))
-                }
-            })
+            if (files) {
+                files.forEach(function(file) {
+                    var fullPath = fspath.join(path,file);
+                    var stats = fs.lstatSync(fullPath);
+                    if (stats.isDirectory()) {
+                        validFiles.push(file);
+                        promises.push(getFlowsFromPath(fullPath));
+                    } else if (/\.json$/.test(file)){
+                        validFiles.push(file);
+                        promises.push(Promise.resolve(file.split(".")[0]))
+                    }
+                })
+            }
             var i=0;
             Promise.all(promises).then(function(results) {
                 results.forEach(function(r) {