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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. Markdown · JSON

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

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
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 1.4.0✓ 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, corrected where a runtime test of that version contradicted them (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 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

Other commonjs packages

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