# Is @eslint/eslintrc ESM-only? Can you require() it?

> @eslint/eslintrc@3.3.7 ships CommonJS and ESM builds. Dual package — require() works on every Node.js version we test; import works too.

The legacy ESLintRC config file format for ESLint

Last verified Sep 9, 2026 against @eslint/eslintrc@3.3.7.

@eslint/eslintrc publishes both a CommonJS entry and a native ESM entry (ESM added in 1.0.0). require("@eslint/eslintrc") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.18.0 || ^20.9.0 || >=21.1.0. import "@eslint/eslintrc" works alongside it.

## What to do

1. Nothing to change. require("@eslint/eslintrc") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.18.0 || ^20.9.0 || >=21.1.0. import * as eslintrc from "@eslint/eslintrc" works alongside it; use named imports for what the ESM entry exports.
2. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 3.3.7 (Sep 1, 2026)
- Module format: Dual (CommonJS + ESM)
- Last CommonJS version: 3.3.7
- Native ESM since: 1.0.0
- TypeScript types: bundled
- Node engines: ^18.18.0 || ^20.9.0 || >=21.1.0
- Weekly downloads: 112.4M
- License: MIT

## Runtime test results for @eslint/eslintrc@3.3.7

Installed and executed on Sep 9, 2026 with require("@eslint/eslintrc") from a CommonJS file and import "@eslint/eslintrc" from an ES module.

| Runtime | require("@eslint/eslintrc") | import "@eslint/eslintrc" |
|---|---|---|
| Node.js 18 | works | works |
| Node.js 20 | works | works |
| Node.js 22 | works | works |
| Node.js 24 | works | works |
| Node.js 26 | works | works |
| Bun 1.4.0 | works | works |

## How to import @eslint/eslintrc

ES modules:

```js
import * as eslintrc from "@eslint/eslintrc";
```

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS:

```js
const eslintrc = require("@eslint/eslintrc");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (51 versions; the newest 51 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 3.3.7 | Dual (CommonJS + ESM) | Aug 7, 2021 |
| 0.0.1 – 0.4.3 | CommonJS | Sep 1, 2020 |

## Frequently asked

**Is @eslint/eslintrc ESM-only?**

@eslint/eslintrc@3.3.7 ships CommonJS and ESM builds. @eslint/eslintrc publishes both a CommonJS entry and a native ESM entry (ESM added in 1.0.0). require("@eslint/eslintrc") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.18.0 || ^20.9.0 || >=21.1.0. import "@eslint/eslintrc" works alongside it.

**Can I require @eslint/eslintrc?**

Yes. @eslint/eslintrc ships a CommonJS entry alongside the native ESM entry. require("@eslint/eslintrc") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.18.0 || ^20.9.0 || >=21.1.0.

**Does @eslint/eslintrc work in Bun?**

Yes. import "@eslint/eslintrc" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @eslint/eslintrc ship TypeScript types?**

Yes. @eslint/eslintrc bundles its own type declarations; no @types package is needed.

## Links

- [@eslint/eslintrc on npm](https://www.npmjs.com/package/@eslint/eslintrc)
- [Source repository](https://github.com/eslint/eslintrc)
- [HTML version](https://canirequire.com/package/@eslint/eslintrc/)
- [JSON version](https://canirequire.com/package/@eslint/eslintrc.json)

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