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

Unpipe a stream from all destinations

Last verified Sep 9, 2026 against unpipe@1.0.0. JSON

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

unpipe ships CommonJS only. require("unpipe") works everywhere. import "unpipe" 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
1.0.0 (Jun 14, 2015)
Module format
CommonJS
Last CommonJS version
1.0.0
TypeScript types
None
Node engines
>= 0.8
Weekly downloads
100.1M
License
MIT

Does unpipe@1.0.0 actually load? Runtime test results

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

Runtimerequire("unpipe")import "unpipe"
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 unpipe

ES modules (import)

import unpipe from "unpipe";

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 unpipe = require("unpipe");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (1 versions; the newest 1 shown).

VersionsFormatFirst published
1.0.0CommonJSJun 14, 2015

Frequently asked

Is unpipe ESM-only?

unpipe@1.0.0 is a CommonJS package. unpipe ships CommonJS only. require("unpipe") works everywhere. import "unpipe" 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 unpipe with ES module syntax?

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

Yes. import "unpipe" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does unpipe ship TypeScript types?

No. unpipe ships no type declarations and there is no @types package for it.

Links

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