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

Asynchronous recursive file copy utility.

Last verified Sep 9, 2026 against ncp@2.0.0. Markdown · JSON

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

ncp ships CommonJS only. require("ncp") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "ncp" 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("ncp") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import ncp from "ncp"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/ncp
Latest
2.0.0 (Feb 22, 2015)
Module format
CommonJS
Last CommonJS version
2.0.0
TypeScript types
@types/ncp
Node engines
not declared
Weekly downloads
6.0M
License
MIT

Does ncp@2.0.0 actually load? Runtime test results

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

Runtimerequire("ncp")import "ncp"
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 ncp

ES modules (import)

import ncp from "ncp";

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 ncp = require("ncp");

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 (24 versions; the newest 24 shown).

VersionsFormatFirst published
0.0.0 – 2.0.0CommonJSAug 25, 2011

Frequently asked

Is ncp ESM-only?

ncp@2.0.0 is a CommonJS package. ncp ships CommonJS only. require("ncp") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "ncp" 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 ncp with ES module syntax?

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

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

Does ncp ship TypeScript types?

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

Links

Other commonjs packages

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