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Is prop-types ESM-only? Can you require() it?

Runtime type checking for React props and similar objects.

Last verified Sep 9, 2026 against prop-types@15.8.1. JSON

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

prop-types ships CommonJS only. require("prop-types") works everywhere. import "prop-types" 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
15.8.1 (Jan 5, 2022)
Module format
CommonJS
Last CommonJS version
15.8.1
TypeScript types
@types/prop-types
Node engines
not declared
Weekly downloads
92.7M
License
MIT

Does prop-types@15.8.1 actually load? Runtime test results

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

Runtimerequire("prop-types")import "prop-types"
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 prop-types

ES modules (import)

import propTypes from "prop-types";

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 propTypes = require("prop-types");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (21 versions; the newest 21 shown).

VersionsFormatFirst published
0.1.0 – 15.8.1CommonJSFeb 20, 2015

Frequently asked

Is prop-types ESM-only?

prop-types@15.8.1 is a CommonJS package. prop-types ships CommonJS only. require("prop-types") works everywhere. import "prop-types" 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 prop-types with ES module syntax?

Yes. import propTypes from "prop-types" 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 prop-types work in Bun?

Yes. import "prop-types" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does prop-types ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/prop-types".

Links

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