# Is @rollup/plugin-json ESM-only? Can you require() it?

> @rollup/plugin-json@6.1.0 ships CommonJS and ESM builds. Dual package — require() works on every Node.js version we test; import works too.

Convert .json files to ES6 modules

Last verified Sep 9, 2026 against @rollup/plugin-json@6.1.0.

@rollup/plugin-json publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("@rollup/plugin-json") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14.0.0. import "@rollup/plugin-json" works alongside it.

## What to do

1. Nothing to change. require("@rollup/plugin-json") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14.0.0. import * as pluginJson from "@rollup/plugin-json" works alongside it; use named imports for what the ESM entry exports.
2. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 6.1.0 (Dec 12, 2023)
- Module format: Dual (CommonJS + ESM)
- Last CommonJS version: 6.1.0
- Native ESM since: 5.0.0
- TypeScript types: bundled
- Node engines: >=14.0.0
- Weekly downloads: 8.1M
- License: MIT

## Runtime test results for @rollup/plugin-json@6.1.0

Installed and executed on Sep 9, 2026 with require("@rollup/plugin-json") from a CommonJS file and import "@rollup/plugin-json" from an ES module.

| Runtime | require("@rollup/plugin-json") | import "@rollup/plugin-json" |
|---|---|---|
| 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 @rollup/plugin-json

ES modules:

```js
import * as pluginJson from "@rollup/plugin-json";
```

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

CommonJS:

```js
const pluginJson = require("@rollup/plugin-json");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (11 versions; the newest 11 shown).

| Versions | Format | First published |
|---|---|---|
| 5.0.0 – 6.1.0 | Dual (CommonJS + ESM) | Oct 10, 2022 |
| 4.0.0 – 4.1.0 | CommonJS | Nov 10, 2019 |

## Frequently asked

**Is @rollup/plugin-json ESM-only?**

@rollup/plugin-json@6.1.0 ships CommonJS and ESM builds. @rollup/plugin-json publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("@rollup/plugin-json") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14.0.0. import "@rollup/plugin-json" works alongside it.

**Can I require @rollup/plugin-json?**

Yes. @rollup/plugin-json ships a CommonJS entry alongside the native ESM entry. require("@rollup/plugin-json") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=14.0.0.

**Does @rollup/plugin-json work in Bun?**

Yes. import "@rollup/plugin-json" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @rollup/plugin-json ship TypeScript types?**

Yes. @rollup/plugin-json bundles its own type declarations; no @types package is needed.

## Links

- [@rollup/plugin-json on npm](https://www.npmjs.com/package/@rollup/plugin-json)
- [Source repository](https://github.com/rollup/plugins)
- [HTML version](https://canirequire.com/package/@rollup/plugin-json/)
- [JSON version](https://canirequire.com/package/@rollup/plugin-json.json)

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