canirequire

canirequire › CommonJS › uglify-js

Is uglify-js ESM-only? Can you require() it?

JavaScript parser, mangler/compressor and beautifier toolkit

Last verified Sep 9, 2026 against uglify-js@3.19.3. JSON

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

uglify-js ships CommonJS only. require("uglify-js") works everywhere. import "uglify-js" 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
3.19.3 (Aug 29, 2024)
Module format
CommonJS
Last CommonJS version
3.19.3
TypeScript types
@types/uglify-js
Node engines
>=0.8.0
Weekly downloads
41.1M
License
BSD-2-Clause

Does uglify-js@3.19.3 actually load? Runtime test results

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

Runtimerequire("uglify-js")import "uglify-js"
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 uglify-js

ES modules (import)

import uglifyJs from "uglify-js";

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 uglifyJs = require("uglify-js");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (288 versions; the newest 60 shown).

VersionsFormatFirst published
3.9.3 – 3.19.3CommonJSMay 13, 2020

Frequently asked

Is uglify-js ESM-only?

uglify-js@3.19.3 is a CommonJS package. uglify-js ships CommonJS only. require("uglify-js") works everywhere. import "uglify-js" 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 uglify-js with ES module syntax?

Yes. import uglifyJs from "uglify-js" 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 uglify-js work in Bun?

Yes. import "uglify-js" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does uglify-js ship TypeScript types?

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

Links

Other commonjs packages

Similar popularity