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

> clone@2.1.2 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

deep cloning of objects and arrays

Last verified Sep 9, 2026 against clone@2.1.2.

clone ships CommonJS only. require("clone") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8. import "clone" 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("clone") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8.
2. From ES modules use the default import: import clone from "clone"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/clone

## Facts

- Latest: 2.1.2 (Mar 21, 2018)
- Module format: CommonJS
- Last CommonJS version: 2.1.2
- TypeScript types: @types/clone
- Node engines: >=0.8
- Weekly downloads: 74.3M
- License: MIT

## Runtime test results for clone@2.1.2

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

| Runtime | require("clone") | import "clone" |
|---|---|---|
| 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 clone

ES modules:

```js
import clone from "clone";
```

CommonJS:

```js
const clone = require("clone");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (38 versions; the newest 38 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.0 – 2.1.2 | CommonJS | Sep 3, 2011 |

## Frequently asked

**Is clone ESM-only?**

clone@2.1.2 is a CommonJS package. clone ships CommonJS only. require("clone") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8. import "clone" 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 clone with ES module syntax?**

Yes. import clone from "clone" 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 clone work in Bun?**

Yes. import "clone" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does clone ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/clone".

## Links

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

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