# Is tr46 ESM-only? Can you require() it?

> tr46@6.0.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

An implementation of the Unicode UTS #46: Unicode IDNA Compatibility Processing

Last verified Sep 9, 2026 against tr46@6.0.0.

tr46 ships CommonJS only. require("tr46") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20. import "tr46" 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("tr46") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20.
2. From ES modules use the default import: import tr46 from "tr46"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/tr46

## Facts

- Latest: 6.0.0 (Sep 18, 2025)
- Module format: CommonJS
- Last CommonJS version: 6.0.0
- TypeScript types: @types/tr46
- Node engines: >=20
- Weekly downloads: 192.6M
- License: MIT

## Runtime test results for tr46@6.0.0

Installed and executed on Sep 9, 2026 with require("tr46") from a CommonJS file and import "tr46" from an ES module.

| Runtime | require("tr46") | import "tr46" |
|---|---|---|
| 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 tr46

ES modules:

```js
import tr46 from "tr46";
```

CommonJS:

```js
const tr46 = require("tr46");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (17 versions; the newest 17 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.1 – 6.0.0 | CommonJS | Jun 6, 2015 |

## Frequently asked

**Is tr46 ESM-only?**

tr46@6.0.0 is a CommonJS package. tr46 ships CommonJS only. require("tr46") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20. import "tr46" 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 tr46 with ES module syntax?**

Yes. import tr46 from "tr46" 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 tr46 work in Bun?**

Yes. import "tr46" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does tr46 ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/tr46".

## Links

- [tr46 on npm](https://www.npmjs.com/package/tr46)
- [Source repository](https://github.com/jsdom/tr46)
- [HTML version](https://canirequire.com/package/tr46/)
- [JSON version](https://canirequire.com/package/tr46.json)

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