# Is prettier-eslint ESM-only? Can you require() it?

> prettier-eslint@17.1.2 is ESM-only. ESM-only since 17.1.0 — last CommonJS version is 17.0.1.

Formats your JavaScript using prettier followed by eslint --fix

Last verified Sep 9, 2026 against prettier-eslint@17.1.2.

prettier-eslint dropped its CommonJS build in 17.1.0 (June 2026). The last version with a plain require()-able CommonJS entry is 17.0.1, published Jun 14, 2026; it declares support for Node.js ^20.19.0 || ^22.13.0 || >=24.

On Node.js 20.19+, 22.12+ and newer, require("prettier-eslint") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Node.js 18 has no require(esm), and prettier-eslint@17.1.2 declares Node.js ^20.19.0 || ^22.13.0 || >=24, so 18 is outside its supported range anyway.

prettier-eslint@17.1.2 declares engines "^20.19.0 || ^22.13.0 || >=24", so Node.js 18 is outside its supported range regardless of module format.

## What to do

1. On Node.js 20.19+, 22.12+ and newer, require("prettier-eslint") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
2. From a CommonJS file, use a dynamic import inside an async function: const prettierEslint = await import("prettier-eslint"). That works on every Node.js version the package supports (^20.19.0 || ^22.13.0 || >=24).
3. If you need a synchronous require(): npm install prettier-eslint@17.0.1, the last CommonJS release (published Jun 14, 2026); it declares Node.js ^20.19.0 || ^22.13.0 || >=24.
4. prettier-eslint@17.1.2 declares engines "^20.19.0 || ^22.13.0 || >=24", so Node.js 18 is unsupported regardless: upgrade Node.js or pin an older release.
5. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 17.1.2 (Aug 20, 2026)
- Module format: ESM-only
- Last CommonJS version: 17.0.1
- ESM-only since: 17.1.0 (Jun 15, 2026)
- TypeScript types: bundled
- Node engines: ^20.19.0 || ^22.13.0 || >=24
- Weekly downloads: 779K
- License: MIT

## Runtime test results for prettier-eslint@17.1.2

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

| Runtime | require("prettier-eslint") | import "prettier-eslint" |
|---|---|---|
| Node.js 18 | fails (ERR_REQUIRE_ESM) | 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 prettier-eslint

ES modules:

```js
import * as prettierEslint from "prettier-eslint";
```

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

CommonJS:

```js
// Node.js 20.19+, 22.12+ and newer (verified):
const prettierEslint = require("prettier-eslint");

// Any Node.js version the package supports (^20.19.0 || ^22.13.0 || >=24), from an async function:
async function main() {
  const prettierEslint = await import("prettier-eslint");
}

// Or pin the last CommonJS release (declares Node.js ^20.19.0 || ^22.13.0 || >=24):
// npm install prettier-eslint@17.0.1
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (113 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 17.1.0 – 17.1.2 | ESM-only | Jun 15, 2026 |
| 7.1.0 – 17.0.1 | CommonJS | Aug 31, 2017 |

## Frequently asked

**Is prettier-eslint ESM-only?**

prettier-eslint@17.1.2 is ESM-only. prettier-eslint dropped its CommonJS build in 17.1.0 (June 2026). The last version with a plain require()-able CommonJS entry is 17.0.1, published Jun 14, 2026; it declares support for Node.js ^20.19.0 || ^22.13.0 || >=24.

**Which version of prettier-eslint still supports CommonJS / require()?**

17.0.1 is the last version of prettier-eslint with a CommonJS build; it declares Node.js ^20.19.0 || ^22.13.0 || >=24. Install it with "npm install prettier-eslint@17.0.1". Every version from 17.1.0 on is ESM-only.

**How do I use prettier-eslint from a CommonJS file?**

From a CommonJS file, use a dynamic import inside an async function: const prettierEslint = await import("prettier-eslint"). That works on every Node.js version the package supports (^20.19.0 || ^22.13.0 || >=24). On Node.js 20.19+, 22.12+ and newer, require("prettier-eslint") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin prettier-eslint@17.0.1 (declares Node.js ^20.19.0 || ^22.13.0 || >=24).

**Does prettier-eslint work in Bun?**

Yes. import "prettier-eslint" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does prettier-eslint ship TypeScript types?**

Yes. prettier-eslint bundles its own type declarations; no @types package is needed.

## Links

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

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