# Is @rolldown/pluginutils ESM-only? Can you require() it?

> @rolldown/pluginutils@1.0.1 is ESM-only. ESM-only — it has never shipped a CommonJS build.

Plugin utilities for Rolldown

Last verified Sep 9, 2026 against @rolldown/pluginutils@1.0.1.

@rolldown/pluginutils has been ESM-only since its first stable release; there is no CommonJS version to pin.

On Node.js 20.19+, 22.12+ and newer, require("@rolldown/pluginutils") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. On Node.js 18, which has no require(esm), require("@rolldown/pluginutils") fails with ERR_REQUIRE_ESM.

## What to do

1. On Node.js 20.19+, 22.12+ and newer, require("@rolldown/pluginutils") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
2. From a CommonJS file, use a dynamic import inside an async function: const pluginutils = await import("@rolldown/pluginutils"). That works on every Node.js version the package supports.
3. There is no CommonJS release of @rolldown/pluginutils to pin; without require(esm) the only option is a dynamic import().
4. TypeScript: no types are available for @rolldown/pluginutils; declare the module yourself if you need them.

## Facts

- Latest: 1.0.1 (May 13, 2026)
- Module format: ESM-only
- Last CommonJS version: none
- ESM-only since: 1.0.0 (May 7, 2026)
- TypeScript types: none
- Node engines: not declared
- Weekly downloads: 113.0M
- License: MIT

## Runtime test results for @rolldown/pluginutils@1.0.1

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

| Runtime | require("@rolldown/pluginutils") | import "@rolldown/pluginutils" |
|---|---|---|
| Node.js 18 | fails (ERR_REQUIRE_ESM) | 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 @rolldown/pluginutils

ES modules:

```js
import * as pluginutils from "@rolldown/pluginutils";
```

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS:

```js
// Node.js 20.19+, 22.12+ and newer (verified):
const pluginutils = require("@rolldown/pluginutils");

// Any Node.js version the package supports, from an async function:
async function main() {
  const pluginutils = await import("@rolldown/pluginutils");
}
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (2 versions; the newest 2 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.0.1 | ESM-only | May 7, 2026 |

## Frequently asked

**Is @rolldown/pluginutils ESM-only?**

@rolldown/pluginutils@1.0.1 is ESM-only. @rolldown/pluginutils has been ESM-only since its first stable release; there is no CommonJS version to pin.

**Which version of @rolldown/pluginutils still supports CommonJS / require()?**

None. @rolldown/pluginutils has always been ESM-only. Use import, or a dynamic import("@rolldown/pluginutils") from an async function in CommonJS.

**How do I use @rolldown/pluginutils from a CommonJS file?**

From a CommonJS file, use a dynamic import inside an async function: const pluginutils = await import("@rolldown/pluginutils"). That works on every Node.js version the package supports. On Node.js 20.19+, 22.12+ and newer, require("@rolldown/pluginutils") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.

**Does @rolldown/pluginutils work in Bun?**

Yes. import "@rolldown/pluginutils" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @rolldown/pluginutils ship TypeScript types?**

No. @rolldown/pluginutils ships no type declarations and there is no @types package for it.

## Links

- [@rolldown/pluginutils on npm](https://www.npmjs.com/package/@rolldown/pluginutils)
- [Source repository](https://github.com/rolldown/plugins)
- [HTML version](https://canirequire.com/package/@rolldown/pluginutils/)
- [JSON version](https://canirequire.com/package/@rolldown/pluginutils.json)

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