Add `diagnosticsOptions` to settings.js

packages/node_modules/node-red/settings.js

@@ -224,6 +224,7 @@ module.exports = {
 /*******************************************************************************
  * Runtime Settings
  *  - lang
+ *  - diagnosticsOptions
  *  - logging
  *  - contextStorage
  *  - exportGlobalContextKeys
@@ -236,6 +237,19 @@ module.exports = {
       */
      // lang: "de",
 
+    /** ### Configure diagnostics options 
+     * - `.enabled`:  When `enabled` is `true` (or unset), diagnostics data will
+     *   be available at http://localhost:1880/diagnostics  
+     * - `.level`: When `level` is "basic" (or unset), the diagnostics will not 
+     *   include sensitive data. Set level to "admin" for detailed diagnostics  
+    */ 
+    diagnosticsOptions: {
+        /** @type {boolean} enable or disable diagnostics. Must be set to `false` to disable */
+        enabled: true,
+        /** @type {"basic"|"admin"} diagnostic level can be "basic" (default) or "admin" (more sensitive details are included) */
+        level: "basic",
+    },
+
      /** Configure the logging output */
      logging: {
          /** Only console logging is currently supported */