canirequire › CommonJS › jscs
Is jscs ESM-only? Can you require() it?
JavaScript Code Style
Last verified Sep 9, 2026 against jscs@3.0.7. JSON
CommonJS CommonJS — require() works on every Node.js version
jscs ships CommonJS only. require("jscs") works everywhere. import "jscs" 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.
Deprecated: JSCS has merged with ESLint! See - https://medium.com/@markelog/jscs-end-of-the-line-bc9bf0b3fdb2
Does jscs@3.0.7 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("jscs") from a CommonJS file and import "jscs" from an ES module.
| Runtime | require("jscs") | import "jscs" |
|---|---|---|
| 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 jscs
ES modules (import)
import jscs from "jscs";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 jscs = require("jscs");Module format by version
Derived from the type, main and exports fields of every stable release on npm (95 versions; the newest 60 shown).
| Versions | Format | First published |
|---|---|---|
| 1.4.1 – 3.0.7 | CommonJS | May 6, 2014 |
Frequently asked
Is jscs ESM-only?
jscs@3.0.7 is a CommonJS package. jscs ships CommonJS only. require("jscs") works everywhere. import "jscs" 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 jscs with ES module syntax?
Yes. import jscs from "jscs" 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 jscs work in Bun?
Yes. import "jscs" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does jscs ship TypeScript types?
No. jscs ships no type declarations and there is no @types package for it.
Links
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