canirequire › CommonJS › react-app-polyfill
Is react-app-polyfill ESM-only? Can you require() it?
Polyfills for various browsers including commonly used language features
Last verified Sep 9, 2026 against react-app-polyfill@3.0.0. JSON
CommonJS CommonJS — require() works on every Node.js version
react-app-polyfill ships CommonJS only. require("react-app-polyfill") works everywhere. import "react-app-polyfill" 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.
Does react-app-polyfill@3.0.0 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("react-app-polyfill") from a CommonJS file and import "react-app-polyfill" from an ES module.
| Runtime | require("react-app-polyfill") | import "react-app-polyfill" |
|---|---|---|
| Node.js 18 | ✗ failsMODULE_NOT_FOUND | ✗ failsERR_MODULE_NOT_FOUND |
| Node.js 20 | ✗ failsMODULE_NOT_FOUND | ✗ failsERR_MODULE_NOT_FOUND |
| Node.js 22 | ✗ failsMODULE_NOT_FOUND | ✗ failsERR_MODULE_NOT_FOUND |
| Node.js 24 | ✗ failsMODULE_NOT_FOUND | ✗ failsERR_MODULE_NOT_FOUND |
| Node.js 26 | ✗ failsMODULE_NOT_FOUND | ✗ failsERR_MODULE_NOT_FOUND |
| Bun 1.4 | ✗ failserror: Cannot find package 'react-app-polyfill' from '/Users/boat/Projects/top-seo/data/probe-work/react-app-polyfill/req.cjs' | ✗ failserror: Cannot find package 'react-app-polyfill' from '/Users/boat/Projects/top-seo/data/probe-work/react-app-polyfill/imp.mjs' |
A failing require() on a CommonJS package usually means the package needs a browser/DOM global, a peer dependency, or a native binary that is not available in a bare Node.js process.
How to import react-app-polyfill
ES modules (import)
import reactAppPolyfill from "react-app-polyfill";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 reactAppPolyfill = require("react-app-polyfill");Module format by version
Derived from the type, main and exports fields of every stable release on npm (17 versions; the newest 17 shown).
| Versions | Format | First published |
|---|---|---|
| 0.0.0 – 3.0.0 | CommonJS | Sep 25, 2018 |
Frequently asked
Is react-app-polyfill ESM-only?
react-app-polyfill@3.0.0 is a CommonJS package. react-app-polyfill ships CommonJS only. require("react-app-polyfill") works everywhere. import "react-app-polyfill" 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 react-app-polyfill with ES module syntax?
Yes. import reactAppPolyfill from "react-app-polyfill" 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 react-app-polyfill work in Bun?
Importing react-app-polyfill failed in Bun 1.4 on Sep 9, 2026: error: Cannot find package 'react-app-polyfill' from '/Users/boat/Projects/top-seo/data/probe-work/react-app-polyfill/imp.mjs'
Does react-app-polyfill ship TypeScript types?
No. react-app-polyfill ships no type declarations and there is no @types package for it.
Links
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