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Is acorn-jsx ESM-only? Can you require() it?

Modern, fast React.js JSX parser

Last verified Sep 9, 2026 against acorn-jsx@5.3.2. Markdown · JSON

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

acorn-jsx ships CommonJS only. require("acorn-jsx") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "acorn-jsx" 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.

What to do

  1. require("acorn-jsx") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import acornJsx from "acorn-jsx"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: no types are available for acorn-jsx; declare the module yourself if you need them.
Latest
5.3.2 (Jul 9, 2021)
Module format
CommonJS
Last CommonJS version
5.3.2
TypeScript types
None
Node engines
not declared
Weekly downloads
125.5M
License
MIT

Does acorn-jsx@5.3.2 actually load? Runtime test results

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

Runtimerequire("acorn-jsx")import "acorn-jsx"
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 1.4.0✓ works✓ works

How to import acorn-jsx

ES modules (import)

import acornJsx from "acorn-jsx";

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 acornJsx = require("acorn-jsx");

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 (21 versions; the newest 21 shown).

VersionsFormatFirst published
0.6.1 – 5.3.2CommonJSJul 11, 2014

Frequently asked

Is acorn-jsx ESM-only?

acorn-jsx@5.3.2 is a CommonJS package. acorn-jsx ships CommonJS only. require("acorn-jsx") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "acorn-jsx" 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 acorn-jsx with ES module syntax?

Yes. import acornJsx from "acorn-jsx" 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 acorn-jsx work in Bun?

Yes. import "acorn-jsx" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does acorn-jsx ship TypeScript types?

No. acorn-jsx ships no type declarations and there is no @types package for it.

Links

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