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

Utilities for determining if characters belong to character classes defined by the XML specs.

Last verified Sep 9, 2026 against xmlchars@2.2.0. Markdown · JSON

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

xmlchars ships CommonJS only. require("xmlchars") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "xmlchars" 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("xmlchars") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import xmlchars from "xmlchars"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
2.2.0 (Sep 6, 2019)
Module format
CommonJS
Last CommonJS version
2.2.0
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
75.0M
License
MIT

Does xmlchars@2.2.0 actually load? Runtime test results

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

Runtimerequire("xmlchars")import "xmlchars"
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 xmlchars

ES modules (import)

import xmlchars from "xmlchars";

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 xmlchars = require("xmlchars");

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 (9 versions; the newest 9 shown).

VersionsFormatFirst published
1.0.0 – 2.2.0CommonJSJul 5, 2018

Frequently asked

Is xmlchars ESM-only?

xmlchars@2.2.0 is a CommonJS package. xmlchars ships CommonJS only. require("xmlchars") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "xmlchars" 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 xmlchars with ES module syntax?

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

Yes. import "xmlchars" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does xmlchars ship TypeScript types?

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

Links

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