canirequire › CommonJS › readable-stream
Is readable-stream ESM-only? Can you require() it?
Node.js Streams, a user-land copy of the stream library from Node.js
Last verified Sep 9, 2026 against readable-stream@4.7.0. JSON
CommonJS CommonJS — require() works on every Node.js version
readable-stream ships CommonJS only. require("readable-stream") works everywhere. import "readable-stream" 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 readable-stream@4.7.0 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("readable-stream") from a CommonJS file and import "readable-stream" from an ES module.
| Runtime | require("readable-stream") | import "readable-stream" |
|---|---|---|
| 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 readable-stream
ES modules (import)
import readableStream from "readable-stream";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 readableStream = require("readable-stream");Module format by version
Derived from the type, main and exports fields of every stable release on npm (90 versions; the newest 60 shown).
| Versions | Format | First published |
|---|---|---|
| 2.0.2 – 4.7.0 | CommonJS | Jul 16, 2015 |
Frequently asked
Is readable-stream ESM-only?
readable-stream@4.7.0 is a CommonJS package. readable-stream ships CommonJS only. require("readable-stream") works everywhere. import "readable-stream" 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 readable-stream with ES module syntax?
Yes. import readableStream from "readable-stream" 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 readable-stream work in Bun?
Yes. import "readable-stream" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does readable-stream ship TypeScript types?
Not bundled. Install the community types with "npm install -D @types/readable-stream".
Links
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