upgrade eslint

eslint.config.mjs

@@ -0,0 +1,53 @@
+import security from "eslint-plugin-security";
+import noUnsafeInnerhtml from "eslint-plugin-no-unsafe-innerhtml";
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [
+    ...compat.extends("eslint:recommended", "plugin:security/recommended-legacy"),
+    {
+        plugins: {
+            security,
+            "no-unsafe-innerhtml": noUnsafeInnerhtml,
+        },
+
+        languageOptions: {
+            globals: {
+                ...globals.browser,
+                ...globals.amd,
+                ...globals.jquery,
+                _: true,
+                Backbone: true,
+                google: true,
+            },
+
+            ecmaVersion: 6,
+            sourceType: "module",
+        },
+
+        rules: {
+            indent: ["error", 4],
+            "linebreak-style": ["error", "unix"],
+
+            "no-unused-vars": ["error", {
+                vars: "all",
+                args: "none",
+            }],
+
+            quotes: ["error", "single"],
+            "security/detect-object-injection": "off",
+            semi: ["error", "always"],
+        },
+    },
+];