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

Run commands concurrently

Last verified Sep 9, 2026 against concurrently@10.0.5. JSON

ESM-only ESM-only since 10.0.0 — last CommonJS version is 9.2.4

concurrently dropped its CommonJS build in 10.0.0 (May 2026). The last version you can require() on every Node.js version, including 18 and older, is 9.2.4, published Jul 11, 2026.

On Node.js 20.19+, 22.12+ and every newer release, require("concurrently") works anyway: Node can load synchronous ES modules through require(). Verified on Node 22, 24, 26. Node.js 18 and older still fail with ERR_REQUIRE_ESM.

concurrently@10.0.5 declares engines ">=22", so Node.js 18, 20 are outside its supported range regardless of module format.

Latest
10.0.5 (Aug 15, 2026)
Module format
ESM-only
Last CommonJS version
9.2.4
ESM-only since
10.0.0 (May 28, 2026)
TypeScript types
Bundled
Node engines
>=22
Weekly downloads
18.7M
License
MIT

Does concurrently@10.0.5 actually load? Runtime test results

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

Runtimerequire("concurrently")import "concurrently"
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 concurrently

ES modules (import)

import concurrently from "concurrently";

CommonJS (require)

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

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

// Or pin the last CommonJS release:
// npm install concurrently@9.2.4

Module format by version

Derived from the type, main and exports fields of every stable release on npm (70 versions; the newest 60 shown).

VersionsFormatFirst published
10.0.0 – 10.0.5ESM-onlyMay 28, 2026
7.0.0 – 9.2.4Dual (CommonJS + ESM)Jan 3, 2022
3.0.0 – 6.5.1CommonJSSep 26, 2016

Frequently asked

Is concurrently ESM-only?

concurrently@10.0.5 is ESM-only. concurrently dropped its CommonJS build in 10.0.0 (May 2026). The last version you can require() on every Node.js version, including 18 and older, is 9.2.4, published Jul 11, 2026.

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

9.2.4 is the last version of concurrently with a CommonJS build. Install it with "npm install concurrently@9.2.4". Every version from 10.0.0 on is ESM-only.

How do I use concurrently from a CommonJS file?

Use a dynamic import: const mod = await import("concurrently"). On Node.js 20.19+, 22.12+ and newer, a plain require("concurrently") also works for ESM packages that do not use top-level await. Alternatively pin concurrently@9.2.4.

Does concurrently work in Bun?

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

Does concurrently ship TypeScript types?

Yes. concurrently bundles its own type declarations; no @types package is needed.

Links

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