# Is set-function-name ESM-only? Can you require() it?

> set-function-name@2.0.2 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Set a function's name property

Last verified Sep 9, 2026 against set-function-name@2.0.2.

set-function-name ships CommonJS only. require("set-function-name") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. import "set-function-name" 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("set-function-name") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4.
2. From ES modules use the default import: import setFunctionName from "set-function-name"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 2.0.2 (Feb 20, 2024)
- Module format: CommonJS
- Last CommonJS version: 2.0.2
- TypeScript types: bundled
- Node engines: >= 0.4
- Weekly downloads: 58.4M
- License: MIT

## Runtime test results for set-function-name@2.0.2

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

| Runtime | require("set-function-name") | import "set-function-name" |
|---|---|---|
| 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 set-function-name

ES modules:

```js
import setFunctionName from "set-function-name";
```

CommonJS:

```js
const setFunctionName = require("set-function-name");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (4 versions; the newest 4 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 2.0.2 | CommonJS | Sep 14, 2017 |

## Frequently asked

**Is set-function-name ESM-only?**

set-function-name@2.0.2 is a CommonJS package. set-function-name ships CommonJS only. require("set-function-name") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. import "set-function-name" 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 set-function-name with ES module syntax?**

Yes. import setFunctionName from "set-function-name" 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 set-function-name work in Bun?**

Yes. import "set-function-name" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does set-function-name ship TypeScript types?**

Yes. set-function-name bundles its own type declarations; no @types package is needed.

## Links

- [set-function-name on npm](https://www.npmjs.com/package/set-function-name)
- [Source repository](https://github.com/ljharb/set-function-name)
- [HTML version](https://canirequire.com/package/set-function-name/)
- [JSON version](https://canirequire.com/package/set-function-name.json)

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