build: migrated to ESLint v9

Author: thorsten

.eslintrc.json

@@ -0,0 +1,88 @@
+// ESLint v9 Flat Config for phpMyFAQ website
+import js from '@eslint/js'
+import nextPlugin from '@next/eslint-plugin-next'
+import tsParser from '@typescript-eslint/parser'
+import tsPlugin from '@typescript-eslint/eslint-plugin'
+import globals from 'globals'
+
+export default [
+  // Ignore patterns (Flat Config ersetzt .eslintignore)
+  {
+    ignores: [
+      '.next/**',
+      'out/**',
+      'coverage/**',
+      'playwright-report/**',
+      'node_modules/**',
+      'dist/**',
+      'next-env.d.ts',
+    ],
+  },
+
+  // JavaScript/TypeScript Standardempfehlungen
+  js.configs.recommended,
+
+  // Next.js Core Web Vitals Regeln (teilweise entschärft für Migration)
+  {
+    name: 'next/core-web-vitals',
+    plugins: {
+      '@next/next': nextPlugin,
+    },
+    rules: {
+      ...nextPlugin.configs['core-web-vitals'].rules,
+      '@next/next/no-html-link-for-pages': 'off',
+    },
+  },
+
+  // TypeScript Setup + empfohlene Regeln
+  {
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        ecmaFeatures: { jsx: true },
+      },
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+      },
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+    },
+    rules: {
+      ...tsPlugin.configs.recommended.rules,
+      // TS übernimmt Undef-Prüfung
+      'no-undef': 'off',
+      // Migrationserleichterung
+      'no-useless-escape': 'warn',
+      // Verbot von triple-slash references (außer next-env.d.ts, die ignoriert wird)
+      '@typescript-eslint/triple-slash-reference': ['error', { types: 'never', lib: 'never', path: 'never' }],
+      // Häufige kleine Verstöße sanfter behandeln
+      '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_', varsIgnorePattern: '^_', ignoreRestSiblings: true, caughtErrors: 'none' }],
+      '@typescript-eslint/no-explicit-any': 'warn',
+    },
+  },
+
+  // Tests: Vitest-Globals aktivieren
+  {
+    files: ['src/**/*.{test,spec}.{js,jsx,ts,tsx}'],
+    languageOptions: {
+      globals: {
+        ...globals.vitest,
+        ...globals.browser,
+        ...globals.node,
+      },
+    },
+  },
+
+  // Node/Config-Dateien (optional)
+  {
+    files: ['*.config.*', 'scripts/**/*.{ts,js,mjs,cjs}'],
+    languageOptions: {
+      globals: globals.node,
+    },
+  },
+]

eslint.config.mjs

@@ -3,11 +3,9 @@ import { NextRequest, NextResponse } from 'next/server'
 export function middleware(req: NextRequest) {
   const { pathname } = req.nextUrl
 
-  // Match only /news/<segment> (single segment)
-  const match = pathname.match(/^\/news\/([^\/]+)$/)
+  const match = pathname.match(new RegExp('^/news/([^/]+)$'))
   if (match) {
     const year = match[1]
-    // Return 404 for non four-digit or out-of-range years
     if (!/^\d{4}$/.test(year)) {
       return new NextResponse('Not Found', { status: 404 })
     }
@@ -23,4 +21,3 @@ export function middleware(req: NextRequest) {
 export const config = {
   matcher: ['/news/:year*'],
 }
-

middleware.ts

@@ -1,12 +1,13 @@
 {
-  "name": "phpmyfaq-new",
+  "name": "phpmyfaq-website",
   "version": "4.0.0",
   "private": true,
   "scripts": {
     "dev": "next dev",
     "build": "next build",
     "postbuild": "cp -f static/.htaccess out/.htaccess || true",
-    "lint": "next lint",
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
     "test": "vitest",
     "test:ui": "vitest --ui",
     "test:ci": "vitest --run",
@@ -40,8 +41,13 @@
     "@types/react-dom": "^19.2.2",
     "@vitejs/plugin-react": "^5.1.0",
     "@vitest/coverage-v8": "3.2.4",
-    "eslint": "^8.57.1",
+    "eslint": "^9.0.0",
     "eslint-config-next": "15.5.4",
+    "@typescript-eslint/parser": "^8.0.0",
+    "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "@eslint/js": "^9.0.0",
+    "@next/eslint-plugin-next": "15.5.4",
+    "globals": "^15.12.0",
     "jsdom": "^27.0.1",
     "postcss": "^8.5.6",
     "tailwindcss": "^3.4.18",