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

copy some files

Last verified Sep 9, 2026 against copyfiles@2.4.1. Markdown · JSON

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

copyfiles ships CommonJS only. require("copyfiles") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "copyfiles" 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("copyfiles") 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 copyfiles from "copyfiles"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/copyfiles
Latest
2.4.1 (Nov 27, 2020)
Module format
CommonJS
Last CommonJS version
2.4.1
TypeScript types
@types/copyfiles
Node engines
not declared
Weekly downloads
1.9M
License
MIT

Does copyfiles@2.4.1 actually load? Runtime test results

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

Runtimerequire("copyfiles")import "copyfiles"
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 copyfiles

ES modules (import)

import copyfiles from "copyfiles";

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 copyfiles = require("copyfiles");

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 (18 versions; the newest 18 shown).

VersionsFormatFirst published
0.0.1 – 2.4.1CommonJSMar 19, 2014

Frequently asked

Is copyfiles ESM-only?

copyfiles@2.4.1 is a CommonJS package. copyfiles ships CommonJS only. require("copyfiles") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "copyfiles" 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 copyfiles with ES module syntax?

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

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

Does copyfiles ship TypeScript types?

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

Links

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