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

> svelte-check@4.7.6 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Svelte Code Checker Terminal Interface

Last verified Sep 9, 2026 against svelte-check@4.7.6.

svelte-check ships CommonJS only. require("svelte-check") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 18.0.0. import "svelte-check" 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("svelte-check") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 18.0.0.
2. From ES modules use the default import: import svelteCheck from "svelte-check"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for svelte-check; declare the module yourself if you need them.

## Facts

- Latest: 4.7.6 (Aug 13, 2026)
- Module format: CommonJS
- Last CommonJS version: 4.7.6
- TypeScript types: none
- Node engines: >= 18.0.0
- Weekly downloads: 2.2M
- License: MIT

## Runtime test results for svelte-check@4.7.6

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

| Runtime | require("svelte-check") | import "svelte-check" |
|---|---|---|
| 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 svelte-check

ES modules:

```js
import svelteCheck from "svelte-check";
```

CommonJS:

```js
const svelteCheck = require("svelte-check");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (298 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 3.6.5 – 4.7.6 | CommonJS | Feb 27, 2024 |

## Frequently asked

**Is svelte-check ESM-only?**

svelte-check@4.7.6 is a CommonJS package. svelte-check ships CommonJS only. require("svelte-check") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 18.0.0. import "svelte-check" 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 svelte-check with ES module syntax?**

Yes. import svelteCheck from "svelte-check" 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 svelte-check work in Bun?**

Yes. import "svelte-check" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does svelte-check ship TypeScript types?**

No. svelte-check ships no type declarations and there is no @types package for it.

## Links

- [svelte-check on npm](https://www.npmjs.com/package/svelte-check)
- [Source repository](https://github.com/sveltejs/language-tools)
- [HTML version](https://canirequire.com/package/svelte-check/)
- [JSON version](https://canirequire.com/package/svelte-check.json)

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