# Is es-to-primitive ESM-only? Can you require() it?

> es-to-primitive@1.3.4 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Last verified Sep 9, 2026 against es-to-primitive@1.3.4.

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

## Facts

- Latest: 1.3.4 (Jun 26, 2026)
- Module format: CommonJS
- Last CommonJS version: 1.3.4
- TypeScript types: bundled
- Node engines: >= 0.4
- Weekly downloads: 79.1M
- License: MIT

## Runtime test results for es-to-primitive@1.3.4

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

| Runtime | require("es-to-primitive") | import "es-to-primitive" |
|---|---|---|
| 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 es-to-primitive

ES modules:

```js
import esToPrimitive from "es-to-primitive";
```

CommonJS:

```js
const esToPrimitive = require("es-to-primitive");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (11 versions; the newest 11 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.3.4 | CommonJS | Mar 19, 2015 |

## Frequently asked

**Is es-to-primitive ESM-only?**

es-to-primitive@1.3.4 is a CommonJS package. es-to-primitive ships CommonJS only. require("es-to-primitive") 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 "es-to-primitive" 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 es-to-primitive with ES module syntax?**

Yes. import esToPrimitive from "es-to-primitive" 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 es-to-primitive work in Bun?**

Yes. import "es-to-primitive" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does es-to-primitive ship TypeScript types?**

Yes. es-to-primitive bundles its own type declarations; no @types package is needed.

## Links

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

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