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# ESLintRC Library
This repository contains the legacy ESLintRC configuration file format for ESLint. This package is not intended for use outside of the ESLint ecosystem. It is ESLint-specific and not intended for use in other programs.
**Note:** This package is frozen except for critical bug fixes as ESLint moves to a new config system.
## Installation
You can install the package as follows:
```
npm install @eslint/eslintrc --save-dev
# or
yarn add @eslint/eslintrc -D
```
## Usage
The primary class in this package is `FlatCompat`, which is a utility to translate ESLintRC-style configs into flat configs. Here's how you use it inside of your `eslint.config.js` file:
```js
import { FlatCompat } from "@eslint/eslintrc";
import js from "@eslint/js";
import path from "path";
import { fileURLToPath } from "url";
// mimic CommonJS variables -- not needed if using CommonJS
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const compat = new FlatCompat({
baseDirectory: __dirname, // optional; default: process.cwd()
resolvePluginsRelativeTo: __dirname, // optional
recommendedConfig: js.configs.recommended, // optional
allConfig: js.configs.all, // optional
});
export default [
// mimic ESLintRC-style extends
...compat.extends("standard", "example"),
// mimic environments
...compat.env({
es2020: true,
node: true
}),
// mimic plugins
...compat.plugins("airbnb", "react"),
// translate an entire config
...compat.config({
plugins: ["airbnb", "react"],
extends: "standard",
env: {
es2020: true,
node: true
},
rules: {
semi: "error"
}
})
];
```
## License
MIT License
Version data entries
26 entries across 26 versions & 2 rubygems