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

Node's querystring module for all engines.

Last verified Sep 9, 2026 against querystring@0.2.1. JSON

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

querystring ships CommonJS only. require("querystring") works everywhere. import "querystring" 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
0.2.1 (Feb 15, 2021)
Module format
CommonJS
Last CommonJS version
0.2.1
TypeScript types
None
Node engines
>=0.4.x
Weekly downloads
13.1M
License
MIT

Deprecated: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.

Does querystring@0.2.1 actually load? Runtime test results

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

Runtimerequire("querystring")import "querystring"
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 querystring

ES modules (import)

import querystring from "querystring";

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 querystring = require("querystring");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (5 versions; the newest 5 shown).

VersionsFormatFirst published
0.0.1 – 0.2.1CommonJSApr 15, 2011

Frequently asked

Is querystring ESM-only?

querystring@0.2.1 is a CommonJS package. querystring ships CommonJS only. require("querystring") works everywhere. import "querystring" 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 querystring with ES module syntax?

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

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

Does querystring ship TypeScript types?

No. querystring ships no type declarations and there is no @types package for it.

Links

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