docs: add // @ts-check to config example

BREAKING CHANGE: Minimum supported Node.js >= 20.11.0

Ref: https://nodejs.org/api/esm.html#importmetadirname

README.md

@@ -29,7 +29,7 @@ More information about **formatting rules** vs **code-quality rules** can be fou
 
 ### Prerequisites
 
-[Node.js](https://nodejs.org/) >= 20.9.0
+[Node.js](https://nodejs.org/) >= 20.11.0
 
 ### Installation
 
@@ -40,8 +40,8 @@ npm install --save-dev \
   eslint-plugin-unicorn@^56.0.0 \
   eslint-plugin-import-x@^4.3.1 \
   globals@^15.10.0 \
-  "typescript@~5.5.4" \
-  "typescript-eslint@^8.8.0" \
+  typescript@~5.5.4 \
+  typescript-eslint@^8.8.0 \
   eslint-config-conventions@latest
 ```
 
@@ -62,10 +62,12 @@ Dependencies are:
 #### `eslint.config.js` (JavaScript and TypeScript)
 
 ```js
-import typescriptESLint from "typescript-eslint"
-import eslintConfigConventions from "eslint-config-conventions"
+// @ts-check
 
-export default typescriptESLint.config(...eslintConfigConventions)
+import typescriptESLint from "typescript-eslint"
+import configConventions from "eslint-config-conventions"
+
+export default typescriptESLint.config(...configConventions)
 ```
 
 #### Configuration with [Prettier](https://prettier.io/) (recommended)

eslint.config.js

@@ -1,3 +1,5 @@
+// @ts-check
+
 import promise from "eslint-plugin-promise"
 import unicorn from "eslint-plugin-unicorn"
 import importX from "eslint-plugin-import-x"

eslint.config.mjs

@@ -1,8 +1,8 @@
 // @ts-check
 
 import typescriptESLint from "typescript-eslint"
-import eslintConfigConventions from "./eslint.config.js"
+import configConventions from "./eslint.config.js"
 
-export default typescriptESLint.config(...eslintConfigConventions, {
+export default typescriptESLint.config(...configConventions, {
   ignores: ["test/fixtures/*"],
 })

package.json

@@ -34,7 +34,7 @@
     "provenance": true
   },
   "engines": {
-    "node": ">=20.9.0"
+    "node": ">=20.11.0"
   },
   "scripts": {
     "lint:editorconfig": "editorconfig-checker",