canirequire › Dual (CommonJS + ESM) › fast-xml-parser
Is fast-xml-parser ESM-only? Can you require() it?
Validate XML, Parse XML, Build XML without C/C++ based libraries
Last verified Sep 9, 2026 against fast-xml-parser@5.11.1. JSON
Dual (CommonJS + ESM) Dual package — both require() and import work
fast-xml-parser publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("fast-xml-parser") and import "fast-xml-parser" both work on every supported Node.js version and in Bun.
Does fast-xml-parser@5.11.1 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("fast-xml-parser") from a CommonJS file and import "fast-xml-parser" from an ES module.
| Runtime | require("fast-xml-parser") | import "fast-xml-parser" |
|---|---|---|
| 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 fast-xml-parser
ES modules (import)
import fastXmlParser from "fast-xml-parser";CommonJS (require)
const fastXmlParser = require("fast-xml-parser");Module format by version
Derived from the type, main and exports fields of every stable release on npm (192 versions; the newest 60 shown).
| Versions | Format | First published |
|---|---|---|
| 5.0.0 – 5.11.1 | Dual (CommonJS + ESM) | Feb 19, 2025 |
| 4.5.5 – 4.5.7 | CommonJS | Mar 22, 2026 |
Frequently asked
Is fast-xml-parser ESM-only?
fast-xml-parser@5.11.1 ships CommonJS and ESM builds. fast-xml-parser publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("fast-xml-parser") and import "fast-xml-parser" both work on every supported Node.js version and in Bun.
Can I require fast-xml-parser?
Yes. fast-xml-parser ships a CommonJS entry, so require("fast-xml-parser") works on every Node.js version, alongside the native ESM entry for import.
Does fast-xml-parser work in Bun?
Yes. import "fast-xml-parser" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does fast-xml-parser ship TypeScript types?
Yes. fast-xml-parser bundles its own type declarations; no @types package is needed.
Links
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