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Is form-data ESM-only? Can you require() it?

A library to create readable "multipart/form-data" streams. Can be used to submit forms and file uploads to other web applications.

Last verified Sep 9, 2026 against form-data@4.0.6. JSON

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

form-data ships CommonJS only. require("form-data") works everywhere. import "form-data" 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
4.0.6 (Jun 12, 2026)
Module format
CommonJS
Last CommonJS version
4.0.6
TypeScript types
Bundled
Node engines
>= 6
Weekly downloads
153.6M
License
MIT

Does form-data@4.0.6 actually load? Runtime test results

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

Runtimerequire("form-data")import "form-data"
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 form-data

ES modules (import)

import formData from "form-data";

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 formData = require("form-data");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (48 versions; the newest 48 shown).

VersionsFormatFirst published
0.0.0 – 4.0.6CommonJSMay 16, 2011

Frequently asked

Is form-data ESM-only?

form-data@4.0.6 is a CommonJS package. form-data ships CommonJS only. require("form-data") works everywhere. import "form-data" 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 form-data with ES module syntax?

Yes. import formData from "form-data" 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 form-data work in Bun?

Yes. import "form-data" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does form-data ship TypeScript types?

Yes. form-data bundles its own type declarations; no @types package is needed.

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