feat: support flat config (and thus ESLint 9)

README.md

@@ -18,7 +18,47 @@ $ npm install @fintechstudios/eslint-plugin-chai-as-promised --save-dev
 
 **Note:** If you installed ESLint globally (using the `-g` flag) then you must also install `@fintechstudios/eslint-plugin-chai-as-promised` globally.
 
-## Usage
+## Usage for eslint.config.js flat (ESLint >= 8)
+
+Add `@fintechstudios/chai-as-promised` to a plugins object within your `eslint.config.js` configuration file. You can omit the `eslint-plugin-` prefix:
+
+```js
+import chaiAsPromised from '@fintechstudios/chai-as-promised';
+
+export default [
+  {
+    "plugins": {
+      "@fintechstudios/eslint-plugin-chai-as-promised": chaiAsPromised
+    }
+  }
+];
+```
+
+
+Then configure the rules you want to use under the rules section.
+
+```json
+{
+  "rules": {
+    "@fintechstudios/chai-as-promised/no-unhandled-promises": 2,
+    "@fintechstudios/chai-as-promised/no-await-in-condition": 2
+  }
+}
+```
+
+Or, to just use the configuration above as is, you can simply add the
+following instead:
+
+```js
+import chaiAsPromised from '@fintechstudios/chai-as-promised';
+
+export default [
+  chaiAsPromised.configs['flat/recommended'];
+];
+```
+
+
+## Usage for .eslintrc (ESLint < 9)
 
 Add `@fintechstudios/chai-as-promised` to the plugins section of your `.eslintrc` configuration file. You can omit the `eslint-plugin-` prefix:
 

eslint.config.mjs

@@ -0,0 +1,32 @@
+import eslint from '@eslint/js';
+import globals from 'globals';
+
+export default [
+  eslint.configs.recommended,
+  {
+    files: ['**/*.js'],
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        expect: true,
+        ruleTester: true,
+        RuleTester: true
+      },
+      sourceType: 'commonjs',
+      ecmaVersion: 2015
+    }
+  },
+  {
+    rules: {
+      'strict': ['error'],
+      'indent': ['error', 2],
+
+      'semi': ['error'],
+      'prefer-const': ['error'],
+      'no-var': ['error'],
+      'prefer-destructuring': ['error'],
+      'object-shorthand': ['error'],
+      'quotes': ['error', 'single']
+    }
+  }
+];

lib/index.js

@@ -4,17 +4,28 @@ const noAwaitInCondition = require('./rules/no-await-in-condition');
 const noUnhandledPromisesRules = require('./rules/no-unhandled-promises');
 
 module.exports = {
-  configs: {
-    recommended: {
-      plugins: ['@fintechstudios/chai-as-promised'],
-      rules: {
-        '@fintechstudios/chai-as-promised/no-await-in-condition': 'error',
-        '@fintechstudios/chai-as-promised/no-unhandled-promises': 'error'
-      }
-    }
-  },
   rules: {
     'no-await-in-condition': noAwaitInCondition,
     'no-unhandled-promises': noUnhandledPromisesRules,
   },
 };
+
+module.exports.configs = {
+  recommended: {
+    plugins: ['@fintechstudios/chai-as-promised'],
+    rules: {
+      '@fintechstudios/chai-as-promised/no-await-in-condition': 'error',
+      '@fintechstudios/chai-as-promised/no-unhandled-promises': 'error'
+    }
+  },
+  'flat/recommended': {
+    name: '@fintechstudios/chai-as-promised/flat/recommended',
+    plugins: {
+      '@fintechstudios/chai-as-promised': module.exports
+    },
+    rules: {
+      '@fintechstudios/chai-as-promised/no-await-in-condition': 'error',
+      '@fintechstudios/chai-as-promised/no-unhandled-promises': 'error'
+    }
+  }
+};