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Is babel-core ESM-only? Can you require() it?

Babel compiler core.

Last verified Sep 9, 2026 against babel-core@6.26.3. JSON

CommonJS CommonJS — require() works on every Node.js version

babel-core ships CommonJS only. require("babel-core") works everywhere. import "babel-core" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Latest
6.26.3 (Apr 27, 2018)
Module format
CommonJS
Last CommonJS version
6.26.3
TypeScript types
@types/babel-core
Node engines
not declared
Weekly downloads
6.3M
License
MIT

Does babel-core@6.26.3 actually load? Runtime test results

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

Runtimerequire("babel-core")import "babel-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✓ works✓ works

How to import babel-core

ES modules (import)

import babelCore from "babel-core";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const babelCore = require("babel-core");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (230 versions; the newest 60 shown).

VersionsFormatFirst published
6.1.10 – 6.26.3CommonJSNov 12, 2015

Frequently asked

Is babel-core ESM-only?

babel-core@6.26.3 is a CommonJS package. babel-core ships CommonJS only. require("babel-core") works everywhere. import "babel-core" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Can I import babel-core with ES module syntax?

Yes. import babelCore from "babel-core" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does babel-core work in Bun?

Yes. import "babel-core" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does babel-core ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/babel-core".

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