From 66a704af55b2cc78e304549f5199f45f682b032b Mon Sep 17 00:00:00 2001
From: Nick O'Leary <nick.oleary@gmail.com>
Date: Thu, 15 Jul 2021 15:37:12 +0100
Subject: [PATCH] Fallback to 'require' if on node < 12.17

---
 .../nodes/core/function/10-function.js         |  2 +-
 .../@node-red/registry/lib/externalModules.js  | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/packages/node_modules/@node-red/nodes/core/function/10-function.js b/packages/node_modules/@node-red/nodes/core/function/10-function.js
index b229c0767..6b131b097 100644
--- a/packages/node_modules/@node-red/nodes/core/function/10-function.js
+++ b/packages/node_modules/@node-red/nodes/core/function/10-function.js
@@ -494,7 +494,7 @@ module.exports = function(RED) {
                 node.error(err);
             }
         }).catch(err => {
-            throw new Error(RED._("function.error.externalModuleLoadError"));
+            node.error(RED._("function.error.externalModuleLoadError"));
         });
     }
     RED.nodes.registerType("function",FunctionNode, {
diff --git a/packages/node_modules/@node-red/registry/lib/externalModules.js b/packages/node_modules/@node-red/registry/lib/externalModules.js
index 3458d4312..470d09a29 100644
--- a/packages/node_modules/@node-red/registry/lib/externalModules.js
+++ b/packages/node_modules/@node-red/registry/lib/externalModules.js
@@ -26,6 +26,12 @@ let installEnabled = true;
 let installAllowList = ['*'];
 let installDenyList = [];
 
+let IMPORT_SUPPORTED = true;
+const nodeVersionParts = process.versions.node.split(".").map(v => parseInt(v));
+if (nodeVersionParts[0] < 12 || (nodeVersionParts[0] === 12 && nodeVersionParts[1] < 17)) {
+    IMPORT_SUPPORTED = false;
+}
+
 function getInstallDir() {
     return path.resolve(settings.userDir || process.env.NODE_RED_HOME || ".");
 }
@@ -102,6 +108,18 @@ function requireModule(module) {
     return require(moduleDir);
 }
 function importModule(module) {
+    if (!IMPORT_SUPPORTED) {
+        // On Node < 12.17 - fall back to try a require
+        return new Promise((resolve, reject) => {
+            try {
+                const mod = requireModule(module);
+                resolve(mod);
+            } catch(err) {
+                reject(err);
+            }
+        });
+    }
+
     if (!registryUtil.checkModuleAllowed( module, null,installAllowList,installDenyList)) {
         const e = new Error("Module not allowed");
         e.code = "module_not_allowed";