canirequire › CommonJS › nopt
Is nopt ESM-only? Can you require() it?
Option parsing for Node, supporting types, shorthands, etc. Used by npm.
Last verified Sep 9, 2026 against nopt@10.0.1. JSON
CommonJS CommonJS — require() works on every Node.js version
nopt ships CommonJS only. require("nopt") works everywhere. import "nopt" 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 nopt@10.0.1 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("nopt") from a CommonJS file and import "nopt" from an ES module.
| Runtime | require("nopt") | import "nopt" |
|---|---|---|
| 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 nopt
ES modules (import)
import nopt from "nopt";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 nopt = require("nopt");Module format by version
Derived from the type, main and exports fields of every stable release on npm (39 versions; the newest 39 shown).
| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 10.0.1 | CommonJS | Mar 30, 2011 |
Frequently asked
Is nopt ESM-only?
nopt@10.0.1 is a CommonJS package. nopt ships CommonJS only. require("nopt") works everywhere. import "nopt" 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 nopt with ES module syntax?
Yes. import nopt from "nopt" 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 nopt work in Bun?
Yes. import "nopt" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does nopt ship TypeScript types?
Not bundled. Install the community types with "npm install -D @types/nopt".
Links
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