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

Babel helper to create your own polyfill provider

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

ESM-only ESM-only since 1.0.0 — last CommonJS version is 0.6.8

@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.
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

Does @babel/helper-define-polyfill-provider@1.0.0 actually load? Runtime test results

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.

Runtimerequire("@babel/helper-define-polyfill-provider")import "@babel/helper-define-polyfill-provider"
Node.js 18✗ failsERR_REQUIRE_ESM✗ failsSyntaxError
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 (import)

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 (require)

// 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, corrected where a runtime test of that version contradicted them (37 versions; the newest 37 shown).

VersionsFormatFirst published
1.0.0ESM-onlyJun 17, 2026
0.2.0 – 0.6.8Dual (CommonJS + ESM)Mar 31, 2021
0.0.1 – 0.1.5CommonJSMay 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

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