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

ECMAScript (ESTree) AST walker

Last verified Sep 9, 2026 against acorn-walk@8.3.5. Markdown · JSON

Dual (CommonJS + ESM) Dual package — require() works on every Node.js version we test; import works too

acorn-walk publishes both a CommonJS entry and a native ESM entry (ESM added in 8.0.0). require("acorn-walk") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.4.0. import "acorn-walk" works alongside it.

What to do

  1. Nothing to change. require("acorn-walk") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.4.0. import * as acornWalk from "acorn-walk" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
8.3.5 (Feb 19, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
8.3.5
Native ESM since
8.0.0
TypeScript types
Bundled
Node engines
>=0.4.0
Weekly downloads
70.4M
License
MIT

Does acorn-walk@8.3.5 actually load? Runtime test results

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

Runtimerequire("acorn-walk")import "acorn-walk"
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-walk

ES modules (import)

import * as acornWalk from "acorn-walk";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

const acornWalk = require("acorn-walk");

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
8.0.0 – 8.3.5Dual (CommonJS + ESM)Aug 12, 2020
6.0.0 – 7.2.0CommonJSSep 14, 2018

Frequently asked

Is acorn-walk ESM-only?

acorn-walk@8.3.5 ships CommonJS and ESM builds. acorn-walk publishes both a CommonJS entry and a native ESM entry (ESM added in 8.0.0). require("acorn-walk") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.4.0. import "acorn-walk" works alongside it.

Can I require acorn-walk?

Yes. acorn-walk ships a CommonJS entry alongside the native ESM entry. require("acorn-walk") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.4.0.

Does acorn-walk work in Bun?

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

Does acorn-walk ship TypeScript types?

Yes. acorn-walk bundles its own type declarations; no @types package is needed.

Links

Other dual (commonjs + esm) packages

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