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Is escape-string-regexp ESM-only? Can you require() it?

Escape RegExp special characters

Last verified Sep 9, 2026 against escape-string-regexp@5.0.0. JSON

ESM-only ESM-only since 5.0.0 — last CommonJS version is 4.0.0

escape-string-regexp dropped its CommonJS build in 5.0.0 (April 2021). The last version you can require() on every Node.js version, including 18 and older, is 4.0.0, published Apr 23, 2020.

On Node.js 20.19+, 22.12+ and every newer release, require("escape-string-regexp") 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
5.0.0 (Apr 17, 2021)
Module format
ESM-only
Last CommonJS version
4.0.0
ESM-only since
5.0.0 (Apr 17, 2021)
TypeScript types
@types/escape-string-regexp
Node engines
>=12
Weekly downloads
316.5M
License
MIT

Does escape-string-regexp@5.0.0 actually load? Runtime test results

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

Runtimerequire("escape-string-regexp")import "escape-string-regexp"
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 escape-string-regexp

ES modules (import)

import escapeStringRegexp from "escape-string-regexp";

CommonJS (require)

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

// Any Node.js version:
const escapeStringRegexp = await import("escape-string-regexp");

// Or pin the last CommonJS release:
// npm install escape-string-regexp@4.0.0

Module format by version

Derived from the type, main and exports fields of every stable release on npm (10 versions; the newest 10 shown).

VersionsFormatFirst published
5.0.0ESM-onlyApr 17, 2021
1.0.0 – 4.0.0CommonJSJun 24, 2014

Frequently asked

Is escape-string-regexp ESM-only?

escape-string-regexp@5.0.0 is ESM-only. escape-string-regexp dropped its CommonJS build in 5.0.0 (April 2021). The last version you can require() on every Node.js version, including 18 and older, is 4.0.0, published Apr 23, 2020.

Which version of escape-string-regexp still supports CommonJS / require()?

4.0.0 is the last version of escape-string-regexp with a CommonJS build. Install it with "npm install escape-string-regexp@4.0.0". Every version from 5.0.0 on is ESM-only.

How do I use escape-string-regexp from a CommonJS file?

Use a dynamic import: const mod = await import("escape-string-regexp"). On Node.js 20.19+, 22.12+ and newer, a plain require("escape-string-regexp") also works for ESM packages that do not use top-level await. Alternatively pin escape-string-regexp@4.0.0.

Does escape-string-regexp work in Bun?

Yes. import "escape-string-regexp" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does escape-string-regexp ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/escape-string-regexp".

Links

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