# Is split2 ESM-only? Can you require() it?

> split2@4.2.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

split a Text Stream into a Line Stream, using Stream 3

Last verified Sep 9, 2026 against split2@4.2.0.

split2 ships CommonJS only. require("split2") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10.x. import "split2" 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("split2") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10.x.
2. From ES modules use the default import: import split2 from "split2"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/split2

## Facts

- Latest: 4.2.0 (Mar 26, 2023)
- Module format: CommonJS
- Last CommonJS version: 4.2.0
- TypeScript types: @types/split2
- Node engines: >= 10.x
- Weekly downloads: 77.0M
- License: ISC

## Runtime test results for split2@4.2.0

Installed and executed on Sep 9, 2026 with require("split2") from a CommonJS file and import "split2" from an ES module.

| Runtime | require("split2") | import "split2" |
|---|---|---|
| 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 split2

ES modules:

```js
import split2 from "split2";
```

CommonJS:

```js
const split2 = require("split2");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (22 versions; the newest 22 shown).

| Versions | Format | First published |
|---|---|---|
| 0.1.0 – 4.2.0 | CommonJS | Mar 12, 2014 |

## Frequently asked

**Is split2 ESM-only?**

split2@4.2.0 is a CommonJS package. split2 ships CommonJS only. require("split2") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10.x. import "split2" 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 split2 with ES module syntax?**

Yes. import split2 from "split2" 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 split2 work in Bun?**

Yes. import "split2" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does split2 ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/split2".

## Links

- [split2 on npm](https://www.npmjs.com/package/split2)
- [Source repository](https://github.com/mcollina/split2)
- [HTML version](https://canirequire.com/package/split2/)
- [JSON version](https://canirequire.com/package/split2.json)

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