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

> proxyquire@2.1.3 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Proxies nodejs require in order to allow overriding dependencies during testing.

Last verified Sep 9, 2026 against proxyquire@2.1.3.

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

## Facts

- Latest: 2.1.3 (Aug 12, 2019)
- Module format: CommonJS
- Last CommonJS version: 2.1.3
- TypeScript types: @types/proxyquire
- Node engines: not declared
- Weekly downloads: 1.2M
- License: MIT

## Runtime test results for proxyquire@2.1.3

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

| Runtime | require("proxyquire") | import "proxyquire" |
|---|---|---|
| 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 proxyquire

ES modules:

```js
import proxyquire from "proxyquire";
```

CommonJS:

```js
const proxyquire = require("proxyquire");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (48 versions; the newest 48 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.2 – 2.1.3 | CommonJS | Jul 8, 2012 |

## Frequently asked

**Is proxyquire ESM-only?**

proxyquire@2.1.3 is a CommonJS package. proxyquire ships CommonJS only. require("proxyquire") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "proxyquire" 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 proxyquire with ES module syntax?**

Yes. import proxyquire from "proxyquire" 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 proxyquire work in Bun?**

Yes. import "proxyquire" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does proxyquire ship TypeScript types?**

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

## Links

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

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