# Is own-keys ESM-only? Can you require() it?

> own-keys@1.0.2 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Robustly get an object's own property keys (strings and symbols), including non-enumerables when possible

Last verified Sep 9, 2026 against own-keys@1.0.2.

own-keys ships CommonJS only. require("own-keys") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. import "own-keys" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

## What to do

1. require("own-keys") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4.
2. From ES modules use the default import: import ownKeys from "own-keys"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 1.0.2 (Jul 21, 2026)
- Module format: CommonJS
- Last CommonJS version: 1.0.2
- TypeScript types: bundled
- Node engines: >= 0.4
- Weekly downloads: 67.6M
- License: MIT

## Runtime test results for own-keys@1.0.2

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

| Runtime | require("own-keys") | import "own-keys" |
|---|---|---|
| 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 own-keys

ES modules:

```js
import ownKeys from "own-keys";
```

CommonJS:

```js
const ownKeys = require("own-keys");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (3 versions; the newest 3 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.0.2 | CommonJS | Dec 29, 2024 |

## Frequently asked

**Is own-keys ESM-only?**

own-keys@1.0.2 is a CommonJS package. own-keys ships CommonJS only. require("own-keys") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. import "own-keys" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

**Can I import own-keys with ES module syntax?**

Yes. import ownKeys from "own-keys" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

**Does own-keys work in Bun?**

Yes. import "own-keys" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does own-keys ship TypeScript types?**

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

## Links

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

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