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Is w3c-xmlserializer ESM-only? Can you require() it?

A per-spec XML serializer implementation

Last verified Sep 9, 2026 against w3c-xmlserializer@5.0.0. JSON

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

w3c-xmlserializer ships CommonJS only. require("w3c-xmlserializer") works everywhere. import "w3c-xmlserializer" 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
5.0.0 (Nov 12, 2023)
Module format
CommonJS
Last CommonJS version
5.0.0
TypeScript types
@types/w3c-xmlserializer
Node engines
>=18
Weekly downloads
76.4M
License
MIT

Does w3c-xmlserializer@5.0.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("w3c-xmlserializer") from a CommonJS file and import "w3c-xmlserializer" from an ES module.

Runtimerequire("w3c-xmlserializer")import "w3c-xmlserializer"
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 w3c-xmlserializer

ES modules (import)

import w3cXmlserializer from "w3c-xmlserializer";

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 w3cXmlserializer = require("w3c-xmlserializer");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (12 versions; the newest 12 shown).

VersionsFormatFirst published
0.0.1 – 5.0.0CommonJSJul 1, 2018

Frequently asked

Is w3c-xmlserializer ESM-only?

w3c-xmlserializer@5.0.0 is a CommonJS package. w3c-xmlserializer ships CommonJS only. require("w3c-xmlserializer") works everywhere. import "w3c-xmlserializer" 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 w3c-xmlserializer with ES module syntax?

Yes. import w3cXmlserializer from "w3c-xmlserializer" 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 w3c-xmlserializer work in Bun?

Yes. import "w3c-xmlserializer" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does w3c-xmlserializer ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/w3c-xmlserializer".

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