# Is ember-cli-uglify ESM-only? Can you require() it?

> ember-cli-uglify@3.0.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

JavaScript minification for Ember-CLI

Last verified Sep 9, 2026 against ember-cli-uglify@3.0.0.

ember-cli-uglify ships CommonJS only. require("ember-cli-uglify") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 8.* || >= 10.*. import "ember-cli-uglify" 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.

**Deprecated:** Renamed to ember-cli-terser.

## What to do

1. require("ember-cli-uglify") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 8.* || >= 10.*.
2. From ES modules use the default import: import emberCliUglify from "ember-cli-uglify"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for ember-cli-uglify; declare the module yourself if you need them.
4. This package is deprecated: Renamed to ember-cli-terser.

## Facts

- Latest: 3.0.0 (Apr 12, 2019)
- Module format: CommonJS
- Last CommonJS version: 3.0.0
- TypeScript types: none
- Node engines: 8.* || >= 10.*
- Weekly downloads: 57K
- License: MIT

## Runtime test results for ember-cli-uglify@3.0.0

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

| Runtime | require("ember-cli-uglify") | import "ember-cli-uglify" |
|---|---|---|
| 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 ember-cli-uglify

ES modules:

```js
import emberCliUglify from "ember-cli-uglify";
```

CommonJS:

```js
const emberCliUglify = require("ember-cli-uglify");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (7 versions; the newest 7 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 3.0.0 | CommonJS | Jan 27, 2015 |

## Frequently asked

**Is ember-cli-uglify ESM-only?**

ember-cli-uglify@3.0.0 is a CommonJS package. ember-cli-uglify ships CommonJS only. require("ember-cli-uglify") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 8.* || >= 10.*. import "ember-cli-uglify" 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 ember-cli-uglify with ES module syntax?**

Yes. import emberCliUglify from "ember-cli-uglify" 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 ember-cli-uglify work in Bun?**

Yes. import "ember-cli-uglify" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does ember-cli-uglify ship TypeScript types?**

No. ember-cli-uglify ships no type declarations and there is no @types package for it.

## Links

- [ember-cli-uglify on npm](https://www.npmjs.com/package/ember-cli-uglify)
- [Source repository](https://github.com/ember-cli/ember-cli-uglify)
- [HTML version](https://canirequire.com/package/ember-cli-uglify/)
- [JSON version](https://canirequire.com/package/ember-cli-uglify.json)

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