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

> sass@1.104.0 ships CommonJS and ESM builds. Dual package — require() works on every Node.js version we test; import works too.

A pure JavaScript implementation of Sass.

Last verified Sep 9, 2026 against sass@1.104.0.

sass publishes both a CommonJS entry and a native ESM entry (ESM added in 1.63.3). require("sass") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20.19.0. import "sass" works alongside it.

## What to do

1. Nothing to change. require("sass") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20.19.0. import * as sass from "sass" works alongside it; use named imports for what the ESM entry exports.
2. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 1.104.0 (Sep 3, 2026)
- Module format: Dual (CommonJS + ESM)
- Last CommonJS version: 1.104.0
- Native ESM since: 1.63.3
- TypeScript types: bundled
- Node engines: >=20.19.0
- Weekly downloads: 27.4M
- License: MIT

## Runtime test results for sass@1.104.0

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

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

ES modules:

```js
import * as sass from "sass";
```

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS:

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

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (308 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 1.80.0 – 1.104.0 | Dual (CommonJS + ESM) | Oct 17, 2024 |

## Frequently asked

**Is sass ESM-only?**

sass@1.104.0 ships CommonJS and ESM builds. sass publishes both a CommonJS entry and a native ESM entry (ESM added in 1.63.3). require("sass") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20.19.0. import "sass" works alongside it.

**Can I require sass?**

Yes. sass ships a CommonJS entry alongside the native ESM entry. require("sass") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=20.19.0.

**Does sass work in Bun?**

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

**Does sass ship TypeScript types?**

Yes. sass bundles its own type declarations; no @types package is needed.

## Links

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

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