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Is arrify ESM-only? Can you require() it?

Convert a value to an array

Last verified Sep 9, 2026 against arrify@3.0.0. JSON

ESM-only ESM-only since 3.0.0 — last CommonJS version is 2.0.1

arrify dropped its CommonJS build in 3.0.0 (April 2021). The last version you can require() on every Node.js version, including 18 and older, is 2.0.1, published Apr 9, 2019.

On Node.js 20.19+, 22.12+ and every newer release, require("arrify") 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.

Latest
3.0.0 (Apr 28, 2021)
Module format
ESM-only
Last CommonJS version
2.0.1
ESM-only since
3.0.0 (Apr 28, 2021)
TypeScript types
@types/arrify
Node engines
>=12
Weekly downloads
25.9M
License
MIT

Does arrify@3.0.0 actually load? Runtime test results

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

Runtimerequire("arrify")import "arrify"
Node.js 18✗ failsERR_REQUIRE_ESM✓ 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 arrify

ES modules (import)

import arrify from "arrify";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const arrify = require("arrify");

// Any Node.js version:
const arrify = await import("arrify");

// Or pin the last CommonJS release:
// npm install arrify@2.0.1

Module format by version

Derived from the type, main and exports fields of every stable release on npm (5 versions; the newest 5 shown).

VersionsFormatFirst published
3.0.0ESM-onlyApr 28, 2021
1.0.0 – 2.0.1CommonJSFeb 16, 2015

Frequently asked

Is arrify ESM-only?

arrify@3.0.0 is ESM-only. arrify dropped its CommonJS build in 3.0.0 (April 2021). The last version you can require() on every Node.js version, including 18 and older, is 2.0.1, published Apr 9, 2019.

Which version of arrify still supports CommonJS / require()?

2.0.1 is the last version of arrify with a CommonJS build. Install it with "npm install arrify@2.0.1". Every version from 3.0.0 on is ESM-only.

How do I use arrify from a CommonJS file?

Use a dynamic import: const mod = await import("arrify"). On Node.js 20.19+, 22.12+ and newer, a plain require("arrify") also works for ESM packages that do not use top-level await. Alternatively pin arrify@2.0.1.

Does arrify work in Bun?

Yes. import "arrify" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does arrify ship TypeScript types?

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

Links

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