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

> tldts-core@7.4.12 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

tldts core primitives (internal module)

Last verified Sep 9, 2026 against tldts-core@7.4.12.

tldts-core ships CommonJS only. require("tldts-core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "tldts-core" 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.

It also declares a "module" field, so bundlers such as webpack, Vite and esbuild pick up an ESM build for tree-shaking.

## What to do

1. require("tldts-core") 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 tldtsCore from "tldts-core"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 7.4.12 (Sep 7, 2026)
- Module format: CommonJS
- Last CommonJS version: 7.4.12
- TypeScript types: bundled
- Node engines: not declared
- Weekly downloads: 60.8M
- License: MIT

## Runtime test results for tldts-core@7.4.12

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

| Runtime | require("tldts-core") | import "tldts-core" |
|---|---|---|
| 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 tldts-core

ES modules:

```js
import tldtsCore from "tldts-core";
```

CommonJS:

```js
const tldtsCore = require("tldts-core");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (369 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 6.1.80 – 7.4.12 | CommonJS | Mar 1, 2025 |

## Frequently asked

**Is tldts-core ESM-only?**

tldts-core@7.4.12 is a CommonJS package. tldts-core ships CommonJS only. require("tldts-core") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "tldts-core" 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 tldts-core with ES module syntax?**

Yes. import tldtsCore from "tldts-core" 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 tldts-core work in Bun?**

Yes. import "tldts-core" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does tldts-core ship TypeScript types?**

Yes. tldts-core bundles its own type declarations; no @types package is needed.

## Links

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

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