# Is @pkgr/core ESM-only? Can you require() it?

> @pkgr/core@0.3.6 ships CommonJS and ESM builds. Dual package — require() works on every Node.js version we test; import works too.

Shared core module for `@pkgr` packages or any package else

Last verified Sep 9, 2026 against @pkgr/core@0.3.6.

@pkgr/core publishes both a CommonJS entry and a native ESM entry (ESM added in 0.1.0). require("@pkgr/core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^14.18.0 || >=16.0.0. import "@pkgr/core" works alongside it.

## What to do

1. Nothing to change. require("@pkgr/core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^14.18.0 || >=16.0.0. import * as core from "@pkgr/core" works alongside it; use named imports for what the ESM entry exports.
2. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 0.3.6 (May 28, 2026)
- Module format: Dual (CommonJS + ESM)
- Last CommonJS version: 0.3.6
- Native ESM since: 0.1.0
- TypeScript types: bundled
- Node engines: ^14.18.0 || >=16.0.0
- Weekly downloads: 36.0M
- License: MIT

## Runtime test results for @pkgr/core@0.3.6

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

| Runtime | require("@pkgr/core") | import "@pkgr/core" |
|---|---|---|
| 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 @pkgr/core

ES modules:

```js
import * as core from "@pkgr/core";
```

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

CommonJS:

```js
const core = require("@pkgr/core");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (20 versions; the newest 20 shown).

| Versions | Format | First published |
|---|---|---|
| 0.1.0 – 0.3.6 | Dual (CommonJS + ESM) | Dec 26, 2023 |

## Frequently asked

**Is @pkgr/core ESM-only?**

@pkgr/core@0.3.6 ships CommonJS and ESM builds. @pkgr/core publishes both a CommonJS entry and a native ESM entry (ESM added in 0.1.0). require("@pkgr/core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^14.18.0 || >=16.0.0. import "@pkgr/core" works alongside it.

**Can I require @pkgr/core?**

Yes. @pkgr/core ships a CommonJS entry alongside the native ESM entry. require("@pkgr/core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^14.18.0 || >=16.0.0.

**Does @pkgr/core work in Bun?**

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

**Does @pkgr/core ship TypeScript types?**

Yes. @pkgr/core bundles its own type declarations; no @types package is needed.

## Links

- [@pkgr/core on npm](https://www.npmjs.com/package/@pkgr/core)
- [Source repository](https://github.com/un-ts/pkgr)
- [HTML version](https://canirequire.com/package/@pkgr/core/)
- [JSON version](https://canirequire.com/package/@pkgr/core.json)

---

For scripts and AI agents: any package is at https://canirequire.com/package/<name>/index.md (Markdown) or https://canirequire.com/package/<name>.json (JSON); the site index is https://canirequire.com/llms.txt. Fetch the URL directly; no search needed.