diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/editors/code-editors/monaco.js b/packages/node_modules/@node-red/editor-client/src/js/ui/editors/code-editors/monaco.js
index 3c221df4e..6d31ecd59 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/editors/code-editors/monaco.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/editors/code-editors/monaco.js
@@ -121,7 +121,7 @@ RED.editor.codeEditor.monaco = (function() {
             const def = modulesCache[libPath];
             if( def ) {
                 if(!preloadOnly) {
-                    loadedLibs.JS[libModule] = monaco.languages.typescript.javascriptDefaults.addExtraLib(def, `file://types/${libPackage}/${libModule}/index.d.ts`);
+                    loadedLibs.JS[libModule] = monaco.languages.typescript.javascriptDefaults.addExtraLib(def, "file://types/" + libPackage + "/" + libModule + "/index.d.ts");
                 }
                 if(cb) {
                     setTimeout(function() {
@@ -134,7 +134,7 @@ RED.editor.codeEditor.monaco = (function() {
                 .done(function(data) {
                     modulesCache[libPath] =  data;
                     if(!preloadOnly) {
-                        loadedLibs.JS[libModule] = monaco.languages.typescript.javascriptDefaults.addExtraLib(data, `file://types/${libPackage}/${libModule}/index.d.ts`);
+                        loadedLibs.JS[libModule] = monaco.languages.typescript.javascriptDefaults.addExtraLib(data, "file://types/" + libPackage + "/" + libModule + "/index.d.ts");
                     }
                     if(cb) { cb(null, _module) }
                 })
@@ -882,7 +882,8 @@ RED.editor.codeEditor.monaco = (function() {
             if(!extraModuleLibs || extraModuleLibs.length == 0) {
                 loadedLibs.JS[id] = monaco.languages.typescript.javascriptDefaults.addExtraLib(" ", file);
             } else {
-                var loadList = [...extraModuleLibs];
+                var loadList = [];
+                Array.prototype.push.apply(loadList, extraModuleLibs);//Use this instead of spread operator to prevent IE syntax error
                 var loadExtraModules = {};
                 for (let index = 0; index < extraModuleLibs.length; index++) {
                     const lib = extraModuleLibs[index];