chore: eslint 9 changes

eslint.config.cjs

@@ -0,0 +1,26 @@
+const globals = require('globals');
+const js = require('@eslint/js');
+
+const { FlatCompat } = require('@eslint/eslintrc');
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all,
+});
+
+module.exports = [
+  ...compat.extends('eslint:recommended', 'plugin:prettier/recommended', 'prettier'),
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.jest,
+        ...globals.node,
+      },
+
+      ecmaVersion: 2021,
+      sourceType: 'module',
+    },
+  },
+];