# Is webpack-bundle-analyzer ESM-only? Can you require() it?

> webpack-bundle-analyzer@5.3.2 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Webpack plugin and CLI utility that represents bundle content as convenient interactive zoomable treemap

Last verified Sep 9, 2026 against webpack-bundle-analyzer@5.3.2.

webpack-bundle-analyzer ships CommonJS only. require("webpack-bundle-analyzer") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 20.9.0. import "webpack-bundle-analyzer" 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("webpack-bundle-analyzer") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 20.9.0.
2. From ES modules use the default import: import webpackBundleAnalyzer from "webpack-bundle-analyzer"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/webpack-bundle-analyzer

## Facts

- Latest: 5.3.2 (Aug 23, 2026)
- Module format: CommonJS
- Last CommonJS version: 5.3.2
- TypeScript types: @types/webpack-bundle-analyzer
- Node engines: >= 20.9.0
- Weekly downloads: 8.7M
- License: MIT

## Runtime test results for webpack-bundle-analyzer@5.3.2

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

| Runtime | require("webpack-bundle-analyzer") | import "webpack-bundle-analyzer" |
|---|---|---|
| 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 webpack-bundle-analyzer

ES modules:

```js
import webpackBundleAnalyzer from "webpack-bundle-analyzer";
```

CommonJS:

```js
const webpackBundleAnalyzer = require("webpack-bundle-analyzer");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (87 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 2.8.1 – 5.3.2 | CommonJS | May 12, 2017 |

## Frequently asked

**Is webpack-bundle-analyzer ESM-only?**

webpack-bundle-analyzer@5.3.2 is a CommonJS package. webpack-bundle-analyzer ships CommonJS only. require("webpack-bundle-analyzer") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 20.9.0. import "webpack-bundle-analyzer" 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-bundle-analyzer with ES module syntax?**

Yes. import webpackBundleAnalyzer from "webpack-bundle-analyzer" 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-bundle-analyzer work in Bun?**

Yes. import "webpack-bundle-analyzer" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does webpack-bundle-analyzer ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/webpack-bundle-analyzer".

## Links

- [webpack-bundle-analyzer on npm](https://www.npmjs.com/package/webpack-bundle-analyzer)
- [Source repository](https://github.com/webpack/webpack-bundle-analyzer)
- [HTML version](https://canirequire.com/package/webpack-bundle-analyzer/)
- [JSON version](https://canirequire.com/package/webpack-bundle-analyzer.json)

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