Fix Jenkinsfile syntax (clean comments)

eslint.config.mts

@@ -0,0 +1,11 @@
+import js from "@eslint/js";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+import pluginReact from "eslint-plugin-react";
+import { defineConfig } from "eslint/config";
+
+export default defineConfig([
+  { files: ["**/*.{js,mjs,cjs,ts,mts,cts,jsx,tsx}"], plugins: { js }, extends: ["js/recommended"], languageOptions: { globals: globals.browser } },
+  tseslint.configs.recommended,
+  pluginReact.configs.flat.recommended,
+]);

package.json

@@ -19,8 +19,14 @@
     "react-dom": "18.2.0"
   },
   "devDependencies": {
+    "@eslint/js": "^9.39.1",
     "@types/node": "24.9.2",
     "@types/react": "19.2.2",
-    "typescript": "5.9.3"
+    "eslint": "^9.39.1",
+    "eslint-plugin-react": "^7.37.5",
+    "globals": "^16.5.0",
+    "jiti": "^2.6.1",
+    "typescript": "5.9.3",
+    "typescript-eslint": "^8.46.3"
   }
 }