Update to latest ESLint v9 (#14)

Author: jstayton

.eslintrc.json

@@ -0,0 +1,28 @@
+import js from '@eslint/js'
+import prettier from 'eslint-config-prettier'
+import node from 'eslint-plugin-n'
+import globals from 'globals'
+
+export default [
+  {
+    languageOptions: {
+      globals: { ...globals.node },
+    },
+  },
+  {
+    ignores: ['docs'],
+  },
+  js.configs.recommended,
+  node.configs['flat/recommended'],
+  {
+    rules: {
+      'n/no-unsupported-features/node-builtins': [
+        'error',
+        {
+          ignores: ['test', 'test.describe', 'test.it'],
+        },
+      ],
+    },
+  },
+  prettier,
+]

eslint.config.js

@@ -26,9 +26,11 @@
     "test": "node --test"
   },
   "devDependencies": {
-    "eslint": "^8.57.0",
+    "@eslint/js": "^9.9.1",
+    "eslint": "^9.9.1",
     "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-n": "^17.9.0",
+    "eslint-plugin-n": "^17.10.2",
+    "globals": "^15.9.0",
     "jsdoc": "^4.0.3",
     "prettier": "3.3.2",
     "release-it": "^17.4.0"