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Is q ESM-only? Can you require() it?

A library for promises (CommonJS/Promises/A,B,D)

Last verified Sep 9, 2026 against q@1.5.1. JSON

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

q ships CommonJS only. require("q") works everywhere. import "q" 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
1.5.1 (Oct 19, 2017)
Module format
CommonJS
Last CommonJS version
1.5.1
TypeScript types
@types/q
Node engines
>=0.6.0
Weekly downloads
11.9M
License
MIT

Deprecated: You or someone you depend on is using Q, the JavaScript Promise library that gave JavaScript developers strong feelings about promises. They can almost certainly migrate to the native JavaScript promise now. Thank you literally everyone for joining me in this bet against the odds. Be excellent to each other. (For a CapTP with native promises, see @endo/eventual-send and @endo/captp)

Does q@1.5.1 actually load? Runtime test results

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

Runtimerequire("q")import "q"
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 q

ES modules (import)

import q from "q";

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 q = require("q");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (75 versions; the newest 60 shown).

VersionsFormatFirst published
0.2.1 – 2.0.3CommonJSJan 5, 2011

Frequently asked

Is q ESM-only?

q@1.5.1 is a CommonJS package. q ships CommonJS only. require("q") works everywhere. import "q" 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 q with ES module syntax?

Yes. import q from "q" 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 q work in Bun?

Yes. import "q" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does q ship TypeScript types?

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

Links

Other commonjs packages

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