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Is strip-ansi ESM-only? Can you require() it?

Strip ANSI escape codes from a string

Last verified Sep 9, 2026 against strip-ansi@7.2.0. JSON

ESM-only ESM-only since 7.0.0 — last CommonJS version is 6.0.1

strip-ansi dropped its CommonJS build in 7.0.0 (April 2021). The last version you can require() on every Node.js version, including 18 and older, is 6.0.1, published Sep 23, 2021.

On Node.js 20.19+, 22.12+ and every newer release, require("strip-ansi") 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
7.2.0 (Feb 26, 2026)
Module format
ESM-only
Last CommonJS version
6.0.1
ESM-only since
7.0.0 (Apr 16, 2021)
TypeScript types
Bundled
Node engines
>=12
Weekly downloads
464.5M
License
MIT

Does strip-ansi@7.2.0 actually load? Runtime test results

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

Runtimerequire("strip-ansi")import "strip-ansi"
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 strip-ansi

ES modules (import)

import stripAnsi from "strip-ansi";

CommonJS (require)

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

// Any Node.js version:
const stripAnsi = await import("strip-ansi");

// Or pin the last CommonJS release:
// npm install strip-ansi@6.0.1

Module format by version

Derived from the type, main and exports fields of every stable release on npm (22 versions; the newest 22 shown).

VersionsFormatFirst published
7.0.0 – 7.2.0ESM-onlyApr 16, 2021
0.1.0 – 6.0.1CommonJSDec 7, 2013

Frequently asked

Is strip-ansi ESM-only?

strip-ansi@7.2.0 is ESM-only. strip-ansi dropped its CommonJS build in 7.0.0 (April 2021). The last version you can require() on every Node.js version, including 18 and older, is 6.0.1, published Sep 23, 2021.

Which version of strip-ansi still supports CommonJS / require()?

6.0.1 is the last version of strip-ansi with a CommonJS build. Install it with "npm install strip-ansi@6.0.1". Every version from 7.0.0 on is ESM-only.

How do I use strip-ansi from a CommonJS file?

Use a dynamic import: const mod = await import("strip-ansi"). On Node.js 20.19+, 22.12+ and newer, a plain require("strip-ansi") also works for ESM packages that do not use top-level await. Alternatively pin strip-ansi@6.0.1.

Does strip-ansi work in Bun?

Yes. import "strip-ansi" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does strip-ansi ship TypeScript types?

Yes. strip-ansi bundles its own type declarations; no @types package is needed.

Links

Other esm-only packages

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