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

Get East Asian Width from a character.

Last verified Sep 9, 2026 against eastasianwidth@0.3.0. JSON

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

eastasianwidth ships CommonJS only. require("eastasianwidth") works everywhere. import "eastasianwidth" 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
0.3.0 (Apr 21, 2024)
Module format
CommonJS
Last CommonJS version
0.3.0
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
62.4M
License
MIT

Does eastasianwidth@0.3.0 actually load? Runtime test results

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

Runtimerequire("eastasianwidth")import "eastasianwidth"
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 eastasianwidth

ES modules (import)

import eastasianwidth from "eastasianwidth";

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 eastasianwidth = require("eastasianwidth");

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 – 0.3.0CommonJSMar 30, 2013

Frequently asked

Is eastasianwidth ESM-only?

eastasianwidth@0.3.0 is a CommonJS package. eastasianwidth ships CommonJS only. require("eastasianwidth") works everywhere. import "eastasianwidth" 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 eastasianwidth with ES module syntax?

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

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

Does eastasianwidth ship TypeScript types?

Yes. eastasianwidth bundles its own type declarations; no @types package is needed.

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