canirequire › CommonJS › multer
Is multer ESM-only? Can you require() it?
Middleware for handling `multipart/form-data`.
Last verified Sep 9, 2026 against multer@2.3.0. JSON
CommonJS CommonJS — require() works on every Node.js version
multer ships CommonJS only. require("multer") works everywhere. import "multer" 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.
Does multer@2.3.0 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("multer") from a CommonJS file and import "multer" from an ES module.
| Runtime | require("multer") | import "multer" |
|---|---|---|
| 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 multer
ES modules (import)
import multer from "multer";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 multer = require("multer");Module format by version
Derived from the type, main and exports fields of every stable release on npm (39 versions; the newest 39 shown).
| Versions | Format | First published |
|---|---|---|
| 0.0.1 – 2.3.0 | CommonJS | Feb 1, 2014 |
Frequently asked
Is multer ESM-only?
multer@2.3.0 is a CommonJS package. multer ships CommonJS only. require("multer") works everywhere. import "multer" 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 multer with ES module syntax?
Yes. import multer from "multer" 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 multer work in Bun?
Yes. import "multer" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does multer ship TypeScript types?
Not bundled. Install the community types with "npm install -D @types/multer".
Links
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