Add support for ESLint v9

README.md

@@ -22,7 +22,68 @@ Following tools are covered:
 
 ## ESLint
 
-This repo provides the following ESLint config packages:
+### Prerequisite
+
+- `eslint`(>=9)
+- `typescript`(optional, for TypeScript support)
+
+### Usage
+
+Install `@rightcapital/eslint-config` to your project.
+
+```sh
+pnpm add -D @rightcapital/eslint-config
+```
+
+In your `eslint.config.mjs`([or equivalent](https://eslint.org/docs/latest/use/configure/configuration-files#configuration-file-formats)):
+
+```js
+import eslintConfigRightcapital from '@rightcapital/eslint-config';
+
+const { config } = eslintConfigRightcapital.utils;
+
+export default config(
+  ...eslintConfigRightcapital.configs.recommended,
+
+  // add more configs for specific files or packages if needed
+  {
+    files: ['scripts/**/*.{js,cjs,mjs}'],
+    extends: [
+      ...eslintConfigRightcapital.configs.node,
+      ...eslintConfigRightcapital.configs.script,
+    ],
+  },
+);
+```
+
+### Exported configs and utils
+
+**`configs`**
+
+- `recommended`: the all-in-one config, contains multiple rules configs for different files.
+
+> [!NOTE]  
+> The following configs are designed to be used with `extends` option. They do have a preset [`files` option](https://eslint.org/docs/latest/use/configure/configuration-files#:~:text=files%20%2D%20An%20array%20of%20glob%20patterns%20indicating%20the%20files%20that%20the%20configuration%20object%20should%20apply%20to.%20If%20not%20specified%2C%20the%20configuration%20object%20applies%20to%20all%20files%20matched%20by%20any%20other%20configuration%20object.).
+
+- `js`: JavaScript specific config.
+- `ts`: TypeScript specific config.
+- `react`: React specific config.
+- `node`: Node.js specific config.
+- `script`: Script oriented config, with less strict rules.
+
+**`utils`**
+
+- `config`: reexported util from `typescript-eslint` for easier compositing ESLint config. (docs: https://typescript-eslint.io/packages/typescript-eslint#config)
+- `globals`: reexported util from [globals](https://github.com/sindresorhus/globals), useful for configuring [`languageOptions.globals`](https://eslint.org/docs/latest/use/configure/language-options#specifying-globals).
+
+---
+
+<details>
+<summary>
+<b>[Deprecated]</b> Usage for Legacy ESLint versions(&lt;9)
+</summary>
+
+There are following config packages for legacy ESLint versions(<9):
 
 - `@rightcapital/eslint-config-javascript`: for JavaScript files
 - `@rightcapital/eslint-config-typescript`: for TypeScript files
@@ -31,13 +92,6 @@ This repo provides the following ESLint config packages:
 
 They can be used independently or combined together according to your project's needs.
 
-### Usage
-
-> [!NOTE]  
-> make sure `eslint` is installed in your project.
->
-> And install `typescript` to your project if you want to use the config supporting TypeScript(`@rightcapital/eslint-config-typescript*`).
-
 Install the config package(s) you need:
 
 ```sh
@@ -133,15 +187,16 @@ module.exports = {
 };
 ```
 
+</details>
 </details>
 
 ## Prettier
 
-### Usage
+### Prerequisite
 
-> Note: Prettier is a peer dependency of the config package. You need to install it in the root of your project.
->
-> See: https://prettier.io/docs/en/install.html
+- `prettier`
+
+### Usage
 
 Install config package to your project:
 

change/@rightcapital-eslint-config-1bddfa0b-d66f-4645-bbaa-926e37d18d68.json

@@ -0,0 +1,7 @@
+{
+  "type": "major",
+  "comment": "feat: add `@rightcapital/eslint-config` that supports ESLint v9",
+  "packageName": "@rightcapital/eslint-config",
+  "email": "[email protected]",
+  "dependentChangeType": "patch"
+}

eslint.config.mjs

@@ -0,0 +1,61 @@
+import eslintConfigRightcapital from '@rightcapital/eslint-config';
+import eslintPluginEslintPlugin from 'eslint-plugin-eslint-plugin';
+
+const { config } = eslintConfigRightcapital.utils;
+
+export default config(
+  {
+    /**
+     * NOTE:
+     * DO NOT put any other keys other than `ignores` in this object.
+     * see: https://eslint.org/docs/latest/use/configure/configuration-files#globally-ignoring-files-with-ignores
+     */
+    ignores: [
+      // build output
+      'packages/*/lib',
+      '.github/actions/*/dist',
+
+      // E2E tests, they contains individual lint config and specific ESLint dependencies
+      'specs',
+    ],
+  },
+  ...eslintConfigRightcapital.configs.recommended,
+
+  // scripts
+  {
+    files: [
+      'packages/*/*.{js,cjs,mjs,ts,cts,mts}', // each package's top-level directory files
+      'scripts/**/*.{js,cjs,mjs}',
+      '.github/actions/**/*.{js,cjs,mjs}',
+    ],
+    extends: [
+      ...eslintConfigRightcapital.configs.script,
+      ...eslintConfigRightcapital.configs.node,
+    ],
+  },
+
+  // -----------------------
+  // package specific rules
+  // -----------------------
+
+  // @rightcapital/eslint-plugin
+  {
+    files: ['packages/eslint-plugin/**/*.ts'],
+    extends: [eslintPluginEslintPlugin.configs['flat/recommended']],
+  },
+  {
+    files: ['packages/eslint-plugin/src/helpers/test/*.ts'],
+    rules: {
+      'import-x/no-extraneous-dependencies': [
+        'error',
+        { devDependencies: true },
+      ],
+    },
+  },
+
+  // @rightcapital/lint-eslint-config-rules
+  {
+    files: ['packages/lint-eslint-config-rules/**/*.ts'],
+    extends: [...eslintConfigRightcapital.configs.script],
+  },
+);

package.json

@@ -35,15 +35,14 @@
     "@commitlint/cli": "19.5.0",
     "@commitlint/config-conventional": "19.5.0",
     "@commitlint/cz-commitlint": "19.5.0",
-    "@rightcapital/eslint-config-javascript": "workspace:*",
-    "@rightcapital/eslint-config-typescript": "workspace:*",
+    "@rightcapital/eslint-config": "workspace:*",
     "@rightcapital/prettier-config": "workspace:*",
     "@rightcapital/scripts": "workspace:*",
     "@types/node": "20.16.5",
     "beachball": "2.47.1",
     "commitizen": "4.3.0",
     "concurrently": "9.0.1",
-    "eslint": "8.57.1",
+    "eslint": "9.12.0",
     "eslint-plugin-eslint-plugin": "6.2.0",
     "execa": "9.4.0",
     "husky": "9.1.6",