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Is cli-width ESM-only? Can you require() it?

Get stdout window width, with two fallbacks, tty and then a default.

Last verified Sep 9, 2026 against cli-width@4.1.0. Markdown · JSON

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

cli-width ships CommonJS only. require("cli-width") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 12. import "cli-width" 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.

What to do

  1. require("cli-width") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 12.
  2. From ES modules use the default import: import cliWidth from "cli-width"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
4.1.0 (Aug 5, 2023)
Module format
CommonJS
Last CommonJS version
4.1.0
TypeScript types
Bundled
Node engines
>= 12
Weekly downloads
66.7M
License
ISC

Does cli-width@4.1.0 actually load? Runtime test results

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

Runtimerequire("cli-width")import "cli-width"
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 1.4.0✓ works✓ works

How to import cli-width

ES modules (import)

import cliWidth from "cli-width";

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 cliWidth = require("cli-width");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (12 versions; the newest 12 shown).

VersionsFormatFirst published
1.0.0 – 4.1.0CommonJSJan 21, 2015

Frequently asked

Is cli-width ESM-only?

cli-width@4.1.0 is a CommonJS package. cli-width ships CommonJS only. require("cli-width") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 12. import "cli-width" 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 cli-width with ES module syntax?

Yes. import cliWidth from "cli-width" 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 cli-width work in Bun?

Yes. import "cli-width" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does cli-width ship TypeScript types?

Yes. cli-width bundles its own type declarations; no @types package is needed.

Links

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