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

> @eslint/object-schema@3.0.5 ships CommonJS and ESM builds. Dual package — require() works on every Node.js version we test; import works too.

An object schema merger/validator

Last verified Sep 9, 2026 against @eslint/object-schema@3.0.5.

@eslint/object-schema publishes both a CommonJS entry and a native ESM entry (ESM added in 2.1.3). require("@eslint/object-schema") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^20.19.0 || ^22.13.0 || >=24. import "@eslint/object-schema" works alongside it.

## What to do

1. Nothing to change. require("@eslint/object-schema") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^20.19.0 || ^22.13.0 || >=24. import * as objectSchema from "@eslint/object-schema" works alongside it; use named imports for what the ESM entry exports.
2. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 3.0.5 (Apr 8, 2026)
- Module format: Dual (CommonJS + ESM)
- Last CommonJS version: 3.0.5
- Native ESM since: 2.1.3
- TypeScript types: bundled
- Node engines: ^20.19.0 || ^22.13.0 || >=24
- Weekly downloads: 80.4M
- License: Apache-2.0

## Runtime test results for @eslint/object-schema@3.0.5

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

| Runtime | require("@eslint/object-schema") | import "@eslint/object-schema" |
|---|---|---|
| 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/object-schema

ES modules:

```js
import * as objectSchema from "@eslint/object-schema";
```

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

CommonJS:

```js
const objectSchema = require("@eslint/object-schema");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (11 versions; the newest 11 shown).

| Versions | Format | First published |
|---|---|---|
| 2.1.3 – 3.0.5 | Dual (CommonJS + ESM) | May 30, 2024 |

## Frequently asked

**Is @eslint/object-schema ESM-only?**

@eslint/object-schema@3.0.5 ships CommonJS and ESM builds. @eslint/object-schema publishes both a CommonJS entry and a native ESM entry (ESM added in 2.1.3). require("@eslint/object-schema") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^20.19.0 || ^22.13.0 || >=24. import "@eslint/object-schema" works alongside it.

**Can I require @eslint/object-schema?**

Yes. @eslint/object-schema ships a CommonJS entry alongside the native ESM entry. require("@eslint/object-schema") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^20.19.0 || ^22.13.0 || >=24.

**Does @eslint/object-schema work in Bun?**

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

**Does @eslint/object-schema ship TypeScript types?**

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

## Links

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

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