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

extend like a boss

Last verified Sep 9, 2026 against xtend@4.0.2. Markdown · JSON

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

xtend ships CommonJS only. require("xtend") 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 "xtend" 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("xtend") 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 xtend from "xtend"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/xtend
Latest
4.0.2 (Jul 8, 2019)
Module format
CommonJS
Last CommonJS version
4.0.2
TypeScript types
@types/xtend
Node engines
>=0.4
Weekly downloads
61.4M
License
MIT

Does xtend@4.0.2 actually load? Runtime test results

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

Runtimerequire("xtend")import "xtend"
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 xtend

ES modules (import)

import xtend from "xtend";

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 xtend = require("xtend");

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 (17 versions; the newest 17 shown).

VersionsFormatFirst published
1.0.0 – 4.0.2CommonJSMay 23, 2012

Frequently asked

Is xtend ESM-only?

xtend@4.0.2 is a CommonJS package. xtend ships CommonJS only. require("xtend") 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 "xtend" 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 xtend with ES module syntax?

Yes. import xtend from "xtend" 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 xtend work in Bun?

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

Does xtend ship TypeScript types?

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

Links

Other commonjs packages

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