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

> gulp-concat@2.6.1 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Concatenates files

Last verified Sep 9, 2026 against gulp-concat@2.6.1.

gulp-concat ships CommonJS only. require("gulp-concat") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.10. import "gulp-concat" 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("gulp-concat") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.10.
2. From ES modules use the default import: import gulpConcat from "gulp-concat"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/gulp-concat

## Facts

- Latest: 2.6.1 (Nov 13, 2016)
- Module format: CommonJS
- Last CommonJS version: 2.6.1
- TypeScript types: @types/gulp-concat
- Node engines: >= 0.10
- Weekly downloads: 399K
- License: MIT

## Runtime test results for gulp-concat@2.6.1

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

| Runtime | require("gulp-concat") | import "gulp-concat" |
|---|---|---|
| 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 gulp-concat

ES modules:

```js
import gulpConcat from "gulp-concat";
```

CommonJS:

```js
const gulpConcat = require("gulp-concat");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (26 versions; the newest 26 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.1 – 2.6.1 | CommonJS | Jul 6, 2013 |

## Frequently asked

**Is gulp-concat ESM-only?**

gulp-concat@2.6.1 is a CommonJS package. gulp-concat ships CommonJS only. require("gulp-concat") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.10. import "gulp-concat" 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 gulp-concat with ES module syntax?**

Yes. import gulpConcat from "gulp-concat" 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 gulp-concat work in Bun?**

Yes. import "gulp-concat" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does gulp-concat ship TypeScript types?**

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

## Links

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

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