Update dependency eslint to v9

eslint.config.mjs

@@ -0,0 +1,48 @@
+import typescriptEslint from '@typescript-eslint/eslint-plugin'
+import jest from 'eslint-plugin-jest'
+import prettier from 'eslint-plugin-prettier'
+import globals from 'globals'
+import tsParser from '@typescript-eslint/parser'
+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 [
+  {
+    ignores: ['**/dist/', '**/lib/', '**/node_modules/', '**/jest.config.js', '**/.*'],
+  },
+  ...compat.extends(
+    'eslint:recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:jest/recommended',
+    'plugin:prettier/recommended',
+  ),
+  {
+    plugins: {
+      '@typescript-eslint': typescriptEslint,
+      jest,
+      prettier,
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.jest,
+      },
+
+      parser: tsParser,
+      ecmaVersion: 2023,
+      sourceType: 'module',
+    },
+  },
+]

package.json

@@ -34,7 +34,7 @@
     "@typescript-eslint/eslint-plugin": "^8.11.0",
     "@typescript-eslint/parser": "^8.11.0",
     "@vercel/ncc": "^0.38.2",
-    "eslint": "^8.57.1",
+    "eslint": "^9.13.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-jest": "^28.8.3",
     "eslint-plugin-prettier": "^5.2.1",