chore: upgrade eslint to v9.10.0

eslint.config.js

@@ -0,0 +1,32 @@
+const js = require('@eslint/js');
+const unicorn = require('eslint-plugin-unicorn');
+const xolass = require('eslint-config-xo-lass');
+
+module.exports = [
+  js.configs.recommended,
+  unicorn.configs['flat/recommended'],
+  {
+    ignores: ['!.*.js'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'commonjs',
+      globals: {
+        console: true,
+        setTimeout: true,
+
+        __dirname: true,
+        before: true,
+        after: true,
+        beforeEach: true,
+        describe: true,
+        it: true
+      }
+    },
+    rules: {
+      ...xolass.rules,
+      'promise/prefer-await-to-then': 0,
+      'logical-assignment-operators': 0,
+      'arrow-body-style': 0
+    }
+  }
+];

package.json

@@ -29,8 +29,9 @@
     "@commitlint/cli": "^17.7.2",
     "@commitlint/config-conventional": "^17.7.0",
     "@ladjs/env": "^4.0.0",
-    "eslint": "^8.39.0",
+    "eslint": "^9.10.0",
     "eslint-config-xo-lass": "^2.0.1",
+    "eslint-plugin-unicorn": "55.0.0",
     "fixpack": "^4.0.0",
     "husky": "^8.0.3",
     "jsdoc-to-markdown": "^8.0.0",
@@ -40,8 +41,7 @@
     "nyc": "^17.0.0",
     "remark-cli": "11",
     "remark-preset-github": "^4.0.4",
-    "supertest": "^7.0.0",
-    "xo": "0.53.1"
+    "supertest": "^7.0.0"
   },
   "engines": {
     "node": ">= 18"
@@ -66,7 +66,7 @@
     "bench": "make -C bench",
     "coverage": "nyc npm run test",
     "docs": "NODE_ENV=test jsdoc2md -t ./lib/API_tpl.hbs --src ./lib/*.js  >| API.md",
-    "lint": "xo --fix && remark . -qfo && fixpack",
+    "lint": "eslint . && remark . -qfo && fixpack",
     "prepare": "husky install",
     "pretest": "npm run lint",
     "test": "mocha test/**/*.js",