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

> call-bound@1.0.4 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

Last verified Sep 9, 2026 against call-bound@1.0.4.

call-bound ships CommonJS only. require("call-bound") 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 "call-bound" 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("call-bound") 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 callBound from "call-bound"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 1.0.4 (Mar 3, 2025)
- Module format: CommonJS
- Last CommonJS version: 1.0.4
- TypeScript types: bundled
- Node engines: >= 0.4
- Weekly downloads: 136.0M
- License: MIT

## Runtime test results for call-bound@1.0.4

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

| Runtime | require("call-bound") | import "call-bound" |
|---|---|---|
| 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 call-bound

ES modules:

```js
import callBound from "call-bound";
```

CommonJS:

```js
const callBound = require("call-bound");
```

## 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 |
|---|---|---|
| 1.0.1 – 1.0.4 | CommonJS | Dec 5, 2024 |

## Frequently asked

**Is call-bound ESM-only?**

call-bound@1.0.4 is a CommonJS package. call-bound ships CommonJS only. require("call-bound") 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 "call-bound" 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 call-bound with ES module syntax?**

Yes. import callBound from "call-bound" 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 call-bound work in Bun?**

Yes. import "call-bound" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does call-bound ship TypeScript types?**

Yes. call-bound bundles its own type declarations; no @types package is needed.

## Links

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

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