canirequire › CommonJS › cssom
Is cssom ESM-only? Can you require() it?
CSS Object Model implementation and CSS parser
Last verified Sep 9, 2026 against cssom@0.5.0. JSON
CommonJS CommonJS — require() works on every Node.js version
cssom ships CommonJS only. require("cssom") works everywhere. import "cssom" 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 cssom@0.5.0 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("cssom") from a CommonJS file and import "cssom" from an ES module.
| Runtime | require("cssom") | import "cssom" |
|---|---|---|
| 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 cssom
ES modules (import)
import cssom from "cssom";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 cssom = require("cssom");Module format by version
Derived from the type, main and exports fields of every stable release on npm (21 versions; the newest 21 shown).
| Versions | Format | First published |
|---|---|---|
| 0.2.0 – 0.5.0 | CommonJS | Oct 24, 2011 |
Frequently asked
Is cssom ESM-only?
cssom@0.5.0 is a CommonJS package. cssom ships CommonJS only. require("cssom") works everywhere. import "cssom" 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 cssom with ES module syntax?
Yes. import cssom from "cssom" 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 cssom work in Bun?
Yes. import "cssom" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does cssom ship TypeScript types?
Not bundled. Install the community types with "npm install -D @types/cssom".
Links
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