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Is find-up ESM-only? Can you require() it?

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Last verified Sep 9, 2026 against find-up@8.0.0. JSON

ESM-only ESM-only since 6.0.0 — last CommonJS version is 5.0.0

find-up dropped its CommonJS build in 6.0.0 (August 2021). The last version you can require() on every Node.js version, including 18 and older, is 5.0.0, published Aug 11, 2020.

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

find-up@8.0.0 declares engines ">=20", so Node.js 18 is outside its supported range regardless of module format.

Latest
8.0.0 (Sep 16, 2025)
Module format
ESM-only
Last CommonJS version
5.0.0
ESM-only since
6.0.0 (Aug 26, 2021)
TypeScript types
Bundled
Node engines
>=20
Weekly downloads
169.8M
License
MIT

Does find-up@8.0.0 actually load? Runtime test results

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

Runtimerequire("find-up")import "find-up"
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 find-up

ES modules (import)

import findUp from "find-up";

CommonJS (require)

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

// Any Node.js version:
const findUp = await import("find-up");

// Or pin the last CommonJS release:
// npm install find-up@5.0.0

Module format by version

Derived from the type, main and exports fields of every stable release on npm (16 versions; the newest 16 shown).

VersionsFormatFirst published
6.0.0 – 8.0.0ESM-onlyAug 26, 2021
1.0.0 – 5.0.0CommonJSSep 1, 2015

Frequently asked

Is find-up ESM-only?

find-up@8.0.0 is ESM-only. find-up dropped its CommonJS build in 6.0.0 (August 2021). The last version you can require() on every Node.js version, including 18 and older, is 5.0.0, published Aug 11, 2020.

Which version of find-up still supports CommonJS / require()?

5.0.0 is the last version of find-up with a CommonJS build. Install it with "npm install find-up@5.0.0". Every version from 6.0.0 on is ESM-only.

How do I use find-up from a CommonJS file?

Use a dynamic import: const mod = await import("find-up"). On Node.js 20.19+, 22.12+ and newer, a plain require("find-up") also works for ESM packages that do not use top-level await. Alternatively pin find-up@5.0.0.

Does find-up work in Bun?

Yes. import "find-up" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does find-up ship TypeScript types?

Yes. find-up bundles its own type declarations; no @types package is needed.

Links

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