TS7 upgrade + write to TS over JS

frontend/eslint.config.js

@@ -2,22 +2,22 @@ import js from "@eslint/js";
 import globals from "globals";
 import reactHooks from "eslint-plugin-react-hooks";
 import reactRefresh from "eslint-plugin-react-refresh";
+import tseslint from "typescript-eslint";
 import { defineConfig, globalIgnores } from "eslint/config";
 
 export default defineConfig([
     globalIgnores(["dist"]),
+
     {
-        files: ["**/*.{js,jsx}"],
-        extends: [
-            js.configs.recommended,
-            reactHooks.configs.flat.recommended,
-            reactRefresh.configs.vite,
-        ],
+        files: ["**/*.{js,jsx,mjs}"],
+        extends: [js.configs.recommended, reactHooks.configs.flat.recommended],
         languageOptions: {
             ecmaVersion: 2020,
-            globals: globals.browser,
+            globals: {
+                ...globals.browser,
+                ...globals.node,
+            },
             parserOptions: {
-                ecmaVersion: "latest",
                 ecmaFeatures: { jsx: true },
                 sourceType: "module",
             },
@@ -26,4 +26,28 @@ export default defineConfig([
             "no-unused-vars": ["error", { varsIgnorePattern: "^[A-Z_]" }],
         },
     },
+
+    {
+        files: ["**/*.{ts,tsx}"],
+        extends: [
+            js.configs.recommended,
+            ...tseslint.configs.recommended,
+            reactHooks.configs.flat.recommended,
+            reactRefresh.configs.vite,
+        ],
+        languageOptions: {
+            globals: globals.browser,
+            parserOptions: {
+                ecmaFeatures: { jsx: true },
+                sourceType: "module",
+            },
+        },
+        rules: {
+            "no-unused-vars": "off",
+            "@typescript-eslint/no-unused-vars": [
+                "error",
+                { varsIgnorePattern: "^[A-Z_]" },
+            ],
+        },
+    },
 ]);