# Is @babel/helper-define-polyfill-provider ESM-only? Can you require() it?

> @babel/helper-define-polyfill-provider@1.0.0 is ESM-only. ESM-only since 1.0.0 — last CommonJS version is 0.6.8.

Babel helper to create your own polyfill provider

Last verified Sep 9, 2026 against @babel/helper-define-polyfill-provider@1.0.0.

@babel/helper-define-polyfill-provider dropped its CommonJS build in 1.0.0 (June 2026). The last version with a plain require()-able CommonJS entry is 0.6.8, published Mar 16, 2026.

On Node.js 20.19+, 22.12+ and newer, require("@babel/helper-define-polyfill-provider") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Node.js 18 has no require(esm), and @babel/helper-define-polyfill-provider@1.0.0 declares Node.js ^20.19.0 || >=22.12.0, so 18 is outside its supported range anyway.

@babel/helper-define-polyfill-provider@1.0.0 declares engines "^20.19.0 || >=22.12.0", so Node.js 18 is outside its supported range regardless of module format.

## What to do

1. On Node.js 20.19+, 22.12+ and newer, require("@babel/helper-define-polyfill-provider") 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 helperDefinePolyfillProvider = await import("@babel/helper-define-polyfill-provider"). That works on every Node.js version the package supports (^20.19.0 || >=22.12.0).
3. If you need a synchronous require() or run Node.js 18: npm install @babel/helper-define-polyfill-provider@0.6.8, the last CommonJS release (published Mar 16, 2026).
4. @babel/helper-define-polyfill-provider@1.0.0 declares engines "^20.19.0 || >=22.12.0", so Node.js 18 is unsupported regardless: upgrade Node.js or pin an older release.
5. TypeScript: no types are available for @babel/helper-define-polyfill-provider; declare the module yourself if you need them.

## Facts

- Latest: 1.0.0 (Jun 17, 2026)
- Module format: ESM-only
- Last CommonJS version: 0.6.8
- ESM-only since: 1.0.0 (Jun 17, 2026)
- TypeScript types: none
- Node engines: ^20.19.0 || >=22.12.0
- Weekly downloads: 33.7M
- License: MIT

## Runtime test results for @babel/helper-define-polyfill-provider@1.0.0

Installed and executed on Sep 9, 2026 with require("@babel/helper-define-polyfill-provider") from a CommonJS file and import "@babel/helper-define-polyfill-provider" from an ES module.

| Runtime | require("@babel/helper-define-polyfill-provider") | import "@babel/helper-define-polyfill-provider" |
|---|---|---|
| Node.js 18 | fails (ERR_REQUIRE_ESM) | fails (SyntaxError) |
| 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 @babel/helper-define-polyfill-provider

ES modules:

```js
import * as helperDefinePolyfillProvider from "@babel/helper-define-polyfill-provider";
```

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 helperDefinePolyfillProvider = require("@babel/helper-define-polyfill-provider");

// Any Node.js version the package supports (^20.19.0 || >=22.12.0), from an async function:
async function main() {
  const helperDefinePolyfillProvider = await import("@babel/helper-define-polyfill-provider");
}

// Or pin the last CommonJS release:
// npm install @babel/helper-define-polyfill-provider@0.6.8
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (37 versions; the newest 37 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 | ESM-only | Jun 17, 2026 |
| 0.2.0 – 0.6.8 | Dual (CommonJS + ESM) | Mar 31, 2021 |
| 0.0.1 – 0.1.5 | CommonJS | May 26, 2020 |

## Frequently asked

**Is @babel/helper-define-polyfill-provider ESM-only?**

@babel/helper-define-polyfill-provider@1.0.0 is ESM-only. @babel/helper-define-polyfill-provider dropped its CommonJS build in 1.0.0 (June 2026). The last version with a plain require()-able CommonJS entry is 0.6.8, published Mar 16, 2026.

**Which version of @babel/helper-define-polyfill-provider still supports CommonJS / require()?**

0.6.8 is the last version of @babel/helper-define-polyfill-provider with a CommonJS build. Install it with "npm install @babel/helper-define-polyfill-provider@0.6.8". Every version from 1.0.0 on is ESM-only.

**How do I use @babel/helper-define-polyfill-provider from a CommonJS file?**

From a CommonJS file, use a dynamic import inside an async function: const helperDefinePolyfillProvider = await import("@babel/helper-define-polyfill-provider"). That works on every Node.js version the package supports (^20.19.0 || >=22.12.0). On Node.js 20.19+, 22.12+ and newer, require("@babel/helper-define-polyfill-provider") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin @babel/helper-define-polyfill-provider@0.6.8.

**Does @babel/helper-define-polyfill-provider work in Bun?**

Yes. import "@babel/helper-define-polyfill-provider" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @babel/helper-define-polyfill-provider ship TypeScript types?**

No. @babel/helper-define-polyfill-provider ships no type declarations and there is no @types package for it.

## Links

- [@babel/helper-define-polyfill-provider on npm](https://www.npmjs.com/package/@babel/helper-define-polyfill-provider)
- [Source repository](https://github.com/babel/babel-polyfills)
- [HTML version](https://canirequire.com/package/@babel/helper-define-polyfill-provider/)
- [JSON version](https://canirequire.com/package/@babel/helper-define-polyfill-provider.json)

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