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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. 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 you can require() on every Node.js version, including 18 and older, is 0.6.8, published Mar 16, 2026.

On Node.js 20.19+, 22.12+ and every newer release, require("@babel/helper-define-polyfill-provider") works anyway: Node can load synchronous ES modules through require(). Verified on Node 20, 22, 24, 26. Node.js 18 and older still fail with ERR_REQUIRE_ESM.

@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.

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
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✓ works✓ works

How to import @babel/helper-define-polyfill-provider

ES modules (import)

import helperDefinePolyfillProvider from "@babel/helper-define-polyfill-provider";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const helperDefinePolyfillProvider = require("@babel/helper-define-polyfill-provider");

// Any Node.js version:
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).

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 you can require() on every Node.js version, including 18 and older, 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?

Use a dynamic import: const mod = await import("@babel/helper-define-polyfill-provider"). On Node.js 20.19+, 22.12+ and newer, a plain require("@babel/helper-define-polyfill-provider") also works for ESM packages that do not use top-level await. 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 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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