feat: support eslint.config.js (#347)

Author: aladdin-add

.eslint-doc-generatorrc.js

@@ -1,7 +1,16 @@
+'use strict';
+
 /** @type {import('eslint-doc-generator').GenerateOptions} */
 module.exports = {
-  ignoreConfig: ['all', 'rules', 'rules-recommended', 'tests', 'tests-recommended'],
+  ignoreConfig: [
+    'all',
+    'rules',
+    'rules-recommended',
+    'tests',
+    'tests-recommended',
+  ],
   ruleDocSectionInclude: ['Rule Details'],
   ruleListSplit: 'meta.docs.category',
-  urlConfigs: 'https://github.com/eslint-community/eslint-plugin-eslint-plugin#presets',
+  urlConfigs:
+    'https://github.com/eslint-community/eslint-plugin-eslint-plugin#presets',
 };

.eslintrc.js

@@ -38,6 +38,8 @@ Here's an example ESLint configuration that:
 * Enables the `recommended` configuration
 * Enables an optional/non-recommended rule
 
+### <a name='eslintrc'></a>**[.eslintrc.json](https://eslint.org/docs/latest/use/configure/configuration-files)**
+
 ```json
 {
     "parserOptions": {
@@ -52,6 +54,21 @@ Here's an example ESLint configuration that:
 }
 ```
 
+### <a name='flat'></a>[`eslint.config.js`](https://eslint.org/docs/latest/use/configure/configuration-files-new) (requires eslint>=v8.23.0)
+
+```js
+const eslintPluginRecommended = require("eslint-plugin-eslint-plugin/configs/recommended");
+module.exports = [
+    eslintPluginRecommended,
+    {
+        languageOptions: {sourceType: "commonjs"},
+        rules: {
+            "eslint-plugin/require-meta-docs-description": "error",
+        },
+    },
+];
+```
+
 ## <a name='Rules'></a>Rules
 
 <!-- begin auto-generated rules list -->

README.md

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview the `all` config for `eslint.config.js`
+ * @author 唯然<[email protected]>
+ */
+
+'use strict';
+
+const mod = require('../lib/index.js');
+
+module.exports = {
+  plugins: { 'eslint-plugin': mod },
+  rules: mod.configs.all.rules,
+};

configs/all.js

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview the `recommended` config for `eslint.config.js`
+ * @author 唯然<[email protected]>
+ */
+
+'use strict';
+
+const mod = require('../lib/index.js');
+
+module.exports = {
+  plugins: { 'eslint-plugin': mod },
+  rules: mod.configs.recommended.rules,
+};

configs/recommended.js

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview the `rules-recommended` config for `eslint.config.js`
+ * @author 唯然<[email protected]>
+ */
+
+'use strict';
+
+const mod = require('../lib/index.js');
+
+module.exports = {
+  plugins: { 'eslint-plugin': mod },
+  rules: mod.configs['rules-recommended'].rules,
+};

configs/rules-recommended.js

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview the `rules` config for `eslint.config.js`
+ * @author 唯然<[email protected]>
+ */
+
+'use strict';
+
+const mod = require('../lib/index.js');
+
+module.exports = {
+  plugins: { 'eslint-plugin': mod },
+  rules: mod.configs.rules.rules,
+};

configs/rules.js

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview the `tests-recommended` config for `eslint.config.js`
+ * @author 唯然<[email protected]>
+ */
+
+'use strict';
+
+const mod = require('../lib/index.js');
+
+module.exports = {
+  plugins: { 'eslint-plugin': mod },
+  rules: mod.configs['tests-recommended'].rules,
+};

configs/tests-recommended.js

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview the `tests` config for `eslint.config.js`
+ * @author 唯然<[email protected]>
+ */
+
+'use strict';
+
+const mod = require('../lib/index.js');
+
+module.exports = {
+  plugins: { 'eslint-plugin': mod },
+  rules: mod.configs.tests.rules,
+};

configs/tests.js

@@ -0,0 +1,88 @@
+'use strict';
+
+const js = require('@eslint/js');
+const { FlatCompat } = require('@eslint/eslintrc');
+const globals = require('globals');
+const markdown = require('eslint-plugin-markdown');
+const eslintPluginConfig = require('eslint-plugin-eslint-plugin/configs/all');
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+});
+
+module.exports = [
+  ...compat.extends(
+    'not-an-aardvark/node',
+    'plugin:eslint-comments/recommended',
+    'plugin:node/recommended',
+    'plugin:prettier/recommended',
+    'plugin:unicorn/recommended'
+  ),
+  {
+    languageOptions: { sourceType: 'commonjs' },
+    rules: {
+      'comma-dangle': [
+        'error',
+        {
+          arrays: 'always-multiline',
+          objects: 'always-multiline',
+          functions: 'never', // disallow trailing commas in function(es2017)
+        },
+      ],
+      'require-jsdoc': 'error',
+
+      'eslint-comments/no-unused-disable': 'error',
+      'eslint-comments/require-description': 'error',
+
+      'unicorn/consistent-function-scoping': 'off',
+      'unicorn/no-array-callback-reference': 'off',
+      'unicorn/no-array-for-each': 'off',
+      'unicorn/no-array-reduce': 'off',
+      'unicorn/no-null': 'off',
+      'unicorn/prefer-module': 'off',
+      'unicorn/prefer-node-protocol': 'off', // TODO: enable once we drop support for Node 14.17.
+      'unicorn/prevent-abbreviations': 'off',
+    },
+  },
+  {
+    // Apply eslint-plugin rules to our own rules/tests (but not docs).
+    files: ['lib/**/*.js', 'tests/**/*.js'],
+    plugins: eslintPluginConfig.plugins,
+    rules: {
+      ...eslintPluginConfig.rules,
+      'eslint-plugin/report-message-format': ['error', '^[^a-z].*.$'],
+      'eslint-plugin/require-meta-docs-url': [
+        'error',
+        {
+          pattern:
+            'https://github.com/eslint-community/eslint-plugin-eslint-plugin/tree/HEAD/docs/rules/{{name}}.md',
+        },
+      ],
+    },
+  },
+  {
+    files: ['tests/**/*.js'],
+    languageOptions: { globals: globals.mocha },
+  },
+  {
+    files: ['**/*.md'],
+    plugins: { markdown },
+    processor: 'markdown/markdown',
+  },
+  {
+    // Markdown JS code samples in documentation:
+    files: ['**/*.md/*.js'],
+    plugins: { markdown },
+    linterOptions: { noInlineConfig: true },
+    rules: {
+      'no-undef': 'off',
+      'no-unused-vars': 'off',
+      strict: 'off',
+
+      'eslint-comments/require-description': 'off',
+
+      'unicorn/filename-case': 'off',
+    },
+  },
+];