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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. Markdown · JSON

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

path-to-regexp ships CommonJS only. require("path-to-regexp") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. 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.

What to do

  1. require("path-to-regexp") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import pathToRegexp from "path-to-regexp"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
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 1.4.0✓ 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, corrected where a runtime test of that version contradicted them (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 on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. 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 1.4.0 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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