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Is webpack-dev-middleware ESM-only? Can you require() it?

A development middleware for webpack

Last verified Sep 9, 2026 against webpack-dev-middleware@8.3.0. JSON

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

webpack-dev-middleware ships CommonJS only. require("webpack-dev-middleware") works everywhere. import "webpack-dev-middleware" 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
8.3.0 (Sep 3, 2026)
Module format
CommonJS
Last CommonJS version
8.3.0
TypeScript types
Bundled
Node engines
>= 20.9.0
Weekly downloads
21.6M
License
MIT

Does webpack-dev-middleware@8.3.0 actually load? Runtime test results

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

Runtimerequire("webpack-dev-middleware")import "webpack-dev-middleware"
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 webpack-dev-middleware

ES modules (import)

import webpackDevMiddleware from "webpack-dev-middleware";

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 webpackDevMiddleware = require("webpack-dev-middleware");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (126 versions; the newest 60 shown).

VersionsFormatFirst published
3.2.0 – 8.3.0CommonJSAug 23, 2018

Frequently asked

Is webpack-dev-middleware ESM-only?

webpack-dev-middleware@8.3.0 is a CommonJS package. webpack-dev-middleware ships CommonJS only. require("webpack-dev-middleware") works everywhere. import "webpack-dev-middleware" 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 webpack-dev-middleware with ES module syntax?

Yes. import webpackDevMiddleware from "webpack-dev-middleware" 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 webpack-dev-middleware work in Bun?

Yes. import "webpack-dev-middleware" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does webpack-dev-middleware ship TypeScript types?

Yes. webpack-dev-middleware bundles its own type declarations; no @types package is needed.

Links

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