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Is define-property ESM-only? Can you require() it?

Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.

Last verified Sep 9, 2026 against define-property@2.0.2. JSON

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

define-property ships CommonJS only. require("define-property") works everywhere. import "define-property" 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
2.0.2 (Jan 26, 2018)
Module format
CommonJS
Last CommonJS version
2.0.2
TypeScript types
None
Node engines
>=0.10.0
Weekly downloads
41.0M
License
MIT

Does define-property@2.0.2 actually load? Runtime test results

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

Runtimerequire("define-property")import "define-property"
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 define-property

ES modules (import)

import defineProperty from "define-property";

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 defineProperty = require("define-property");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (12 versions; the newest 12 shown).

VersionsFormatFirst published
0.1.0 – 2.0.2CommonJSAug 13, 2015

Frequently asked

Is define-property ESM-only?

define-property@2.0.2 is a CommonJS package. define-property ships CommonJS only. require("define-property") works everywhere. import "define-property" 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 define-property with ES module syntax?

Yes. import defineProperty from "define-property" 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 define-property work in Bun?

Yes. import "define-property" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does define-property ship TypeScript types?

No. define-property ships no type declarations and there is no @types package for it.

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