# Is eslint-plugin-flowtype ESM-only? Can you require() it?

> eslint-plugin-flowtype@8.0.3 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Flowtype linting rules for ESLint.

Last verified Sep 9, 2026 against eslint-plugin-flowtype@8.0.3.

eslint-plugin-flowtype ships CommonJS only. require("eslint-plugin-flowtype") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0.0. import "eslint-plugin-flowtype" 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("eslint-plugin-flowtype") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0.0.
2. From ES modules use the default import: import eslintPluginFlowtype from "eslint-plugin-flowtype"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for eslint-plugin-flowtype; declare the module yourself if you need them.

## Facts

- Latest: 8.0.3 (Oct 29, 2021)
- Module format: CommonJS
- Last CommonJS version: 8.0.3
- TypeScript types: none
- Node engines: >=12.0.0
- Weekly downloads: 3.6M
- License: BSD-3-Clause

## Runtime test results for eslint-plugin-flowtype@8.0.3

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

| Runtime | require("eslint-plugin-flowtype") | import "eslint-plugin-flowtype" |
|---|---|---|
| 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 eslint-plugin-flowtype

ES modules:

```js
import eslintPluginFlowtype from "eslint-plugin-flowtype";
```

CommonJS:

```js
const eslintPluginFlowtype = require("eslint-plugin-flowtype");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (185 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 3.10.1 – 8.0.3 | CommonJS | Jun 10, 2019 |

## Frequently asked

**Is eslint-plugin-flowtype ESM-only?**

eslint-plugin-flowtype@8.0.3 is a CommonJS package. eslint-plugin-flowtype ships CommonJS only. require("eslint-plugin-flowtype") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0.0. import "eslint-plugin-flowtype" 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 eslint-plugin-flowtype with ES module syntax?**

Yes. import eslintPluginFlowtype from "eslint-plugin-flowtype" 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 eslint-plugin-flowtype work in Bun?**

Yes. import "eslint-plugin-flowtype" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does eslint-plugin-flowtype ship TypeScript types?**

No. eslint-plugin-flowtype ships no type declarations and there is no @types package for it.

## Links

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

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