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

deep cloning of objects and arrays

Last verified Sep 9, 2026 against clone@2.1.2. JSON

CommonJS CommonJS — require() works on every Node.js version

clone ships CommonJS only. require("clone") works everywhere. 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.

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

Does clone@2.1.2 actually load? Runtime test results

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

Runtimerequire("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✓ works✓ works

How to import clone

ES modules (import)

import clone from "clone";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

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).

VersionsFormatFirst published
0.0.0 – 2.1.2CommonJSSep 3, 2011

Frequently asked

Is clone ESM-only?

clone@2.1.2 is a CommonJS package. clone ships CommonJS only. require("clone") works everywhere. 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 on Sep 9, 2026.

Does clone ship TypeScript types?

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

Links

Other commonjs packages

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