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Is buffer-from ESM-only? Can you require() it?

A [ponyfill](https://ponyfill.com) for `Buffer.from`, uses native implementation if available.

Last verified Sep 9, 2026 against buffer-from@1.1.2. JSON

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

buffer-from ships CommonJS only. require("buffer-from") works everywhere. import "buffer-from" 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
1.1.2 (Jul 29, 2021)
Module format
CommonJS
Last CommonJS version
1.1.2
TypeScript types
@types/buffer-from
Node engines
not declared
Weekly downloads
58.8M
License
MIT

Does buffer-from@1.1.2 actually load? Runtime test results

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

Runtimerequire("buffer-from")import "buffer-from"
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 buffer-from

ES modules (import)

import bufferFrom from "buffer-from";

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 bufferFrom = require("buffer-from");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (7 versions; the newest 7 shown).

VersionsFormatFirst published
0.1.0 – 1.1.2CommonJSAug 18, 2016

Frequently asked

Is buffer-from ESM-only?

buffer-from@1.1.2 is a CommonJS package. buffer-from ships CommonJS only. require("buffer-from") works everywhere. import "buffer-from" 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 buffer-from with ES module syntax?

Yes. import bufferFrom from "buffer-from" 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 buffer-from work in Bun?

Yes. import "buffer-from" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does buffer-from ship TypeScript types?

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

Links

Other commonjs packages

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