chore(deps): update dependency @jenssimon/eslint-config-base to v8 (#220)

* chore(deps): update dependency @jenssimon/eslint-config-base to v8

* chore(deps): use flat config

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Jens Simon <[email protected]>

Author: renovate[bot]

commitlint.config.js

@@ -0,0 +1 @@
+export default { extends: ['@commitlint/config-conventional'] }

commitlint.config.mjs

@@ -0,0 +1,45 @@
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+import { FlatCompat } from '@eslint/eslintrc'
+import { fixupConfigRules } from '@eslint/compat'
+
+
+// mimic CommonJS variables -- not needed if using CommonJS
+const __filename = fileURLToPath(import.meta.url) // eslint-disable-line no-underscore-dangle
+const __dirname = path.dirname(__filename) // eslint-disable-line no-underscore-dangle
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+})
+
+
+export default [
+  {
+    ignores: [
+      '.yarn/',
+      '.yalc/',
+    ],
+  },
+
+  ...fixupConfigRules(compat.config({
+    extends: [
+      '@jenssimon/base',
+    ],
+  })).map((rule) => ({
+    files: [
+      '**/*.js',
+      '**/*.mjs',
+    ],
+    ...rule,
+  })),
+
+  {
+    files: [
+      '**/*.js',
+    ],
+    rules: {
+      'unicorn/prefer-module': 'off',
+    },
+  },
+]

eslint.config.mjs

@@ -18,7 +18,7 @@
     "/index.js"
   ],
   "scripts": {
-    "lint": "eslint --ext .js,.ts,.cjs,.mjs,.cts,.mts ./",
+    "lint": "eslint ./",
     "commit": "cz",
     "postinstall": "husky",
     "prepack": "pinst --disable",
@@ -34,7 +34,9 @@
   "devDependencies": {
     "@commitlint/cli": "^19.0.0",
     "@commitlint/config-conventional": "^19.0.0",
-    "@jenssimon/eslint-config-base": "^7.3.1",
+    "@eslint/compat": "^1.2.4",
+    "@eslint/eslintrc": "^3.2.0",
+    "@jenssimon/eslint-config-base": "^8.0.0",
     "@types/node": "^22.0.0",
     "commitizen": "^4.3.0",
     "cz-conventional-changelog": "^3.3.0",
@@ -51,16 +53,8 @@
     "eslint": "^7.0.0 || ^8.0.0",
     "typescript": ">=4.0.0"
   },
-  "eslintConfig": {
-    "extends": [
-      "@jenssimon/base"
-    ],
-    "rules": {
-      "unicorn/prefer-module": "off"
-    }
-  },
   "lint-staged": {
-    "**/*.{js,ts}": "eslint"
+    "**/*.{js,mjs}": "eslint"
   },
   "packageManager": "[email protected]",
   "config": {