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Is md5 ESM-only? Can you require() it?

js function for hashing messages with MD5

Last verified Sep 9, 2026 against md5@2.3.0. Markdown · JSON

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

md5 ships CommonJS only. require("md5") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "md5" 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("md5") 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 md5 from "md5"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/md5
Latest
2.3.0 (Aug 2, 2020)
Module format
CommonJS
Last CommonJS version
2.3.0
TypeScript types
@types/md5
Node engines
not declared
Weekly downloads
15.5M
License
BSD-3-Clause

Does md5@2.3.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("md5") from a CommonJS file and import "md5" from an ES module.

Runtimerequire("md5")import "md5"
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 md5

ES modules (import)

import md5 from "md5";

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 md5 = require("md5");

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 (7 versions; the newest 7 shown).

VersionsFormatFirst published
1.0.0 – 2.3.0CommonJSMay 13, 2012

Frequently asked

Is md5 ESM-only?

md5@2.3.0 is a CommonJS package. md5 ships CommonJS only. require("md5") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "md5" 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 md5 with ES module syntax?

Yes. import md5 from "md5" 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 md5 work in Bun?

Yes. import "md5" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does md5 ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/md5".

Links

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