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 d793595f8..b2680d0c5 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
@@ -648,6 +648,7 @@ RED.editor.codeEditor.monaco = (function() {
                     strictPropertyInitialization: true,
                     strictFunctionTypes: true,
                     strictBindCallApply: true,
+                    useDefineForClassFields: true,//permit class static fields with private name to have initializer
                     moduleResolution: monaco.languages.typescript.ModuleResolutionKind.NodeJs,
                     module: monaco.languages.typescript.ModuleKind.CommonJS,
                     typeRoots: ["types"],