# Is proxy-addr ESM-only? Can you require() it?

> proxy-addr@2.0.7 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Determine address of proxied request

Last verified Sep 9, 2026 against proxy-addr@2.0.7.

proxy-addr ships CommonJS only. require("proxy-addr") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.10. import "proxy-addr" 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("proxy-addr") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.10.
2. From ES modules use the default import: import proxyAddr from "proxy-addr"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/proxy-addr

## Facts

- Latest: 2.0.7 (Jun 1, 2021)
- Module format: CommonJS
- Last CommonJS version: 2.0.7
- TypeScript types: @types/proxy-addr
- Node engines: >= 0.10
- Weekly downloads: 72.2M
- License: MIT

## Runtime test results for proxy-addr@2.0.7

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

| Runtime | require("proxy-addr") | import "proxy-addr" |
|---|---|---|
| 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 proxy-addr

ES modules:

```js
import proxyAddr from "proxy-addr";
```

CommonJS:

```js
const proxyAddr = require("proxy-addr");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (27 versions; the newest 27 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.0 – 2.0.7 | CommonJS | May 5, 2014 |

## Frequently asked

**Is proxy-addr ESM-only?**

proxy-addr@2.0.7 is a CommonJS package. proxy-addr ships CommonJS only. require("proxy-addr") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.10. import "proxy-addr" 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 proxy-addr with ES module syntax?**

Yes. import proxyAddr from "proxy-addr" 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 proxy-addr work in Bun?**

Yes. import "proxy-addr" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does proxy-addr ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/proxy-addr".

## Links

- [proxy-addr on npm](https://www.npmjs.com/package/proxy-addr)
- [Source repository](https://github.com/jshttp/proxy-addr)
- [HTML version](https://canirequire.com/package/proxy-addr/)
- [JSON version](https://canirequire.com/package/proxy-addr.json)

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