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Is @babel/plugin-proposal-optional-chaining ESM-only? Can you require() it?

Transform optional chaining operators into a series of nil checks

Last verified Sep 9, 2026 against @babel/plugin-proposal-optional-chaining@7.21.0. JSON

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

@babel/plugin-proposal-optional-chaining ships CommonJS only. require("@babel/plugin-proposal-optional-chaining") works everywhere. import "@babel/plugin-proposal-optional-chaining" 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
7.21.0 (Feb 20, 2023)
Module format
CommonJS
Last CommonJS version
7.21.0
TypeScript types
None
Node engines
>=6.9.0
License
MIT

Deprecated: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-optional-chaining instead.

Does @babel/plugin-proposal-optional-chaining@7.21.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("@babel/plugin-proposal-optional-chaining") from a CommonJS file and import "@babel/plugin-proposal-optional-chaining" from an ES module.

Runtimerequire("@babel/plugin-proposal-optional-chaining")import "@babel/plugin-proposal-optional-chaining"
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/plugin-proposal-optional-chaining

ES modules (import)

import pluginProposalOptionalChaining from "@babel/plugin-proposal-optional-chaining";

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 pluginProposalOptionalChaining = require("@babel/plugin-proposal-optional-chaining");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (32 versions; the newest 32 shown).

VersionsFormatFirst published
7.0.0 – 7.21.0CommonJSAug 27, 2018

Frequently asked

Is @babel/plugin-proposal-optional-chaining ESM-only?

@babel/plugin-proposal-optional-chaining@7.21.0 is a CommonJS package. @babel/plugin-proposal-optional-chaining ships CommonJS only. require("@babel/plugin-proposal-optional-chaining") works everywhere. import "@babel/plugin-proposal-optional-chaining" 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/plugin-proposal-optional-chaining with ES module syntax?

Yes. import pluginProposalOptionalChaining from "@babel/plugin-proposal-optional-chaining" 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/plugin-proposal-optional-chaining work in Bun?

Yes. import "@babel/plugin-proposal-optional-chaining" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does @babel/plugin-proposal-optional-chaining ship TypeScript types?

No. @babel/plugin-proposal-optional-chaining ships no type declarations and there is no @types package for it.

Links

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