Replace eslintrc with new flat config file

eslint.config.js

@@ -0,0 +1,34 @@
+import js from "@eslint/js";
+import globals from "globals";
+
+export default [
+    js.configs.recommended,
+    {
+        files: [
+            "**/*.js",
+            "**/*.ts",
+            "**/*.cjs",
+            "**/*.mjs",
+        ],
+        languageOptions: {
+            sourceType: "module",
+            ecmaVersion: 2024,
+            globals: {
+                ...globals.node,
+                ...globals.es2021,
+                ...globals.browser,
+            }
+        },
+        rules: {
+            "semi": ["error", "always"],
+            "indent": ["error", 4],
+            "quotes": ["error", "double"],
+            "linebreak-style": ["error", "unix"],
+            "no-unused-vars": ["error" , {
+                "argsIgnorePattern": "^_",
+                "varsIgnorePattern": "^_",
+                "caughtErrorsIgnorePattern": "^_",
+            }],
+        }
+    },
+];

package.json

@@ -7,7 +7,7 @@
   "type": "module",
   "scripts": {
     "lint": "npm-run-all --parallel lint:*",
-    "lint:js": "eslint routes/* util/*",
+    "lint:js": "eslint .",
     "lint:css": "stylelint stylelint public/css/*.css",
     "lint:md": "markdownlint *.md",
     "minify": "npm-run-all --parallel minify:*",