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Is path-to-regexp ESM-only? Can you require() it?

Express style path to RegExp utility

Last verified Sep 9, 2026 against path-to-regexp@8.4.2. JSON

CommonJS CommonJS — require() works on every Node.js version

path-to-regexp ships CommonJS only. require("path-to-regexp") works everywhere. import "path-to-regexp" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Latest
8.4.2 (Apr 1, 2026)
Module format
CommonJS
Last CommonJS version
8.4.2
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
193.1M
License
MIT

Does path-to-regexp@8.4.2 actually load? Runtime test results

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

Runtimerequire("path-to-regexp")import "path-to-regexp"
Node.js 18✓ works✓ 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 path-to-regexp

ES modules (import)

import pathToRegexp from "path-to-regexp";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const pathToRegexp = require("path-to-regexp");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (73 versions; the newest 60 shown).

VersionsFormatFirst published
0.1.11 – 8.4.2CommonJSSep 12, 2024

Frequently asked

Is path-to-regexp ESM-only?

path-to-regexp@8.4.2 is a CommonJS package. path-to-regexp ships CommonJS only. require("path-to-regexp") works everywhere. import "path-to-regexp" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Can I import path-to-regexp with ES module syntax?

Yes. import pathToRegexp from "path-to-regexp" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does path-to-regexp work in Bun?

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

Does path-to-regexp ship TypeScript types?

Yes. path-to-regexp bundles its own type declarations; no @types package is needed.

Links

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