# eslint-webpack-plugin

> A ESLint plugin for webpack

Latest version **6.0.0** (published 2026-04-03) · MIT license · 0 weekly downloads

## Install

```sh
npm install eslint-webpack-plugin
pnpm add eslint-webpack-plugin
yarn add eslint-webpack-plugin
bun add eslint-webpack-plugin
```

## Health

**Score 60/100 (C)** — status: active.

Positive: has types; no vulnerabilities; high maintenance score; high quality score.

Warnings: low downloads; no esm support.

## Facts

| | |
|---|---|
| Version | 6.0.0 |
| Published | 2026-04-03 |
| First published | 2019-11-12 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Node | >= 20.9.0 |
| Dependencies | 4 |
| Unpacked size | 43.8 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 258 |
| Author | Ricardo Gobbo de Souza |
| Maintainers | evilebottnawi, sokra, jhnns, 15000621931, ev1stensberg, __hai, avivkeller, ricardogobbosouza |
| Keywords | eslint, lint, linter, plugin, webpack |

## Links

- npm: https://www.npmjs.com/package/eslint-webpack-plugin
- Repository: https://github.com/webpack/eslint-webpack-plugin
- Issues: https://github.com/webpack/eslint-webpack-plugin/issues
- Funding: https://opencollective.com/webpack
- npm.io page: https://npm.io/package/eslint-webpack-plugin

## Dependencies (4)

- [micromatch](https://npm.io/package/micromatch.md) ^4.0.8
- [schema-utils](https://npm.io/package/schema-utils.md) ^4.3.3
- [@types/eslint](https://npm.io/package/@types/eslint.md) ^9.6.1
- [normalize-path](https://npm.io/package/normalize-path.md) ^3.0.0

## Alternatives

- [eslint-plugin-sonarjs](https://npm.io/package/eslint-plugin-sonarjs.md) — 2.9M weekly downloads
- [eslint-config-expo](https://npm.io/package/eslint-config-expo.md) — 1.5M weekly downloads
- [@matter/protocol](https://npm.io/package/@matter/protocol.md) — 63.5K weekly downloads
- [@eventcatalog/linter](https://npm.io/package/@eventcatalog/linter.md) — 24.8K weekly downloads
- [@inrupt/eslint-config-base](https://npm.io/package/@inrupt/eslint-config-base.md) — 4.5K weekly downloads

## Recent versions

- 6.0.0 (latest) — 2026-04-03
- 2.7.0 (2x) — 2022-06-23
- 5.0.3 — 2026-02-27
- 5.0.2 — 2025-06-09
- 5.0.1 — 2025-04-15
- 5.0.0 — 2025-02-26
- 4.2.0 — 2024-05-24
- 4.1.0 — 2024-03-14
- 4.0.1 — 2023-04-10
- 4.0.0 — 2023-02-03
- 3.2.0 — 2022-06-23
- 2.6.0 — 2021-11-12
- 3.1.1 — 2021-11-11
- 3.1.0 — 2021-10-27
- 3.0.1 — 2021-07-20
- … 18 more at https://npm.io/package/eslint-webpack-plugin/versions

## README

<div align="center">
  <a href="https://github.com/eslint/eslint"><img width="200" height="200" src="https://cdn.worldvectorlogo.com/logos/eslint.svg"></a>
  <a href="https://github.com/webpack/webpack"><img width="200" height="200" src="https://webpack.js.org/assets/icon-square-big.svg"></a>
</div>

[![npm][npm]][npm-url]
[![node][node]][node-url]
[![tests][tests]][tests-url]
[![coverage][cover]][cover-url]
[![discussion][discussion]][discussion-url]
[![size][size]][size-url]

# eslint-webpack-plugin

> This version of eslint-webpack-plugin only supports webpack 5. For the webpack 4, see the [2.x branch](https://github.com/webpack/eslint-webpack-plugin/tree/2.x).

This plugin uses [`ESlint`](https://eslint.org/) to find and fix problems in your JavaScript code during the Webpack build process.

## Getting Started

To begin, you'll need to install `eslint-webpack-plugin`:

```console
npm install eslint-webpack-plugin --save-dev
```

or

```console
yarn add -D eslint-webpack-plugin
```

or

```console
pnpm add -D eslint-webpack-plugin
```

> [!NOTE]
>
> You also need to install `eslint >= 9` from npm, if you haven't already:

```console
npm install eslint --save-dev
```

or

```console
yarn add -D eslint
```

or

```console
pnpm add -D eslint
```

Then add the plugin to your webpack configuration. For example:

```js
const ESLintPlugin = require("eslint-webpack-plugin");

module.exports = {
  // ...
  plugins: [new ESLintPlugin(options)],
  // ...
};
```

## Options

You can pass [ESLint Node.js API options](https://eslint.org/docs/latest/integrate/nodejs-api#-new-eslintoptions).

> [!NOTE]
>
> The config option you provide will be passed to the `ESLint` class.
> See the [ESlint docs](https://eslint.org/docs/latest/integrate/nodejs-api#-new-eslintoptions) for more details.

### `cache`

- Type:

```ts
type cache = boolean;
```

- Default: `true`

The cache is enabled by default to decrease execution time.

### `cacheLocation`

- Type:

```ts
type cacheLocation = string;
```

- Default: `node_modules/.cache/eslint-webpack-plugin/.eslintcache`

Specify the path to the cache location. Can be a file or a directory.

### `configType`

- Type:

```ts
type configType = "flat" | "eslintrc";
```

- Default: `flat`

Specify the type of configuration to use with ESLint.

- `flat` is the current standard configuration format.
- `eslintrc` is the legacy configuration format and has been officially deprecated.

The new configuration format is explained in its [own documentation](https://eslint.org/docs/latest/use/configure/configuration-files).

### `context`

- Type:

```ts
type context = string;
```

- Default: `compiler.context`

Base directory for linting.

### `eslintPath`

- Type:

```ts
type eslintPath = string;
```

- Default: `eslint`

Path to `eslint` instance that will be used for linting.

If the `eslintPath` is a folder like a official ESlint, or specify a `formatter` option, now you don't have to install `eslint`.

### `extensions`

- Type:

```ts
type extensions = string | string[];
```

- Default: `'js'`

Specify file extensions that should be checked.

### `exclude`

- Type:

```ts
type exclude = string | string[];
```

- Default: `'node_modules'`

Specify the files/directories to exclude. Must be relative to `options.context`.

### `resourceQueryExclude`

- Type:

```ts
type resourceQueryExclude = RegExp | RegExp[];
```

- Default: `[]`

Specify the resource query to exclude.

### `files`

- Type:

```ts
type files = string | string[];
```

- Default: `null`

Specify directories, files, or globs. Must be relative to `options.context`.
Directories are traversed recursively looking for files matching `options.extensions`.
File and glob patterns ignore `options.extensions`.

### `fix`

- Type:

```ts
type fix = boolean;
```

- Default: `false`

Will enable [ESLint autofix feature](https://eslint.org/docs/latest/integrate/nodejs-api#-eslintoutputfixesresults).

**Be careful: this option will modify source files.**

### `formatter`

- Type:

```ts
type formatter =
  | string
  | ((
      results: import("eslint").ESLint.LintResult[],
      data?: import("eslint").ESLint.LintResultData | undefined,
    ) => string);
```

- Default: `'stylish'`

Accepts a function that receives an array of ESLint messages (object) as its argument and must return a string as output.

You can use official [ESlint formatters](https://eslint.org/docs/user-guide/formatters/).

### `lintDirtyModulesOnly`

- Type:

```ts
type lintDirtyModulesOnly = boolean;
```

- Default: `false`

Lint only changed files, skipping initial lint on build start.

### Errors and Warning

**By default the plugin will auto adjust error reporting depending on eslint errors/warnings counts.**

You can still force this behavior by using `emitError` **or** `emitWarning` options:

#### `emitError`

- Type:

```ts
type emitError = boolean;
```

- Default: `true`

The errors found will always be emitted, to disable set to `false`.

#### `emitWarning`

- Type:

```ts
type emitWarning = boolean;
```

- Default: `true`

The warnings found will always be emitted, to disable set to `false`.

#### `failOnError`

- Type:

```ts
type failOnError = boolean;
```

- Default: `true`

Will cause the module build to fail if any errors are found, to disable set to `false`.

#### `failOnWarning`

- Type:

```ts
type failOnWarning = boolean;
```

- Default: `false`

Will cause the module build to fail if any warnings are found, if set to `true`.

#### `quiet`

- Type:

```ts
type quiet = boolean;
```

- Default: `false`

Will process and report errors only and ignore warnings, if set to `true`.

#### `outputReport`

- Type:

```ts
type outputReport =
  | boolean
  | {
      filePath?: string | undefined;
      formatter?:
        | (
            | string
            | ((
                results: import("eslint").ESLint.LintResult[],
                data?: import("eslint").ESLint.LintResultData | undefined,
              ) => string)
          )
        | undefined;
    };
```

- Default: `false`

Write ESLint results to a file, for example a checkstyle xml file for use for reporting on Jenkins CI.

- filePath: Path to output report file (relative to output.path or absolute).
- formatter: You can pass in a different `formatter` for the output file.
  if none is passed in the default/configured formatter will be used.

## Changelog

[Changelog](CHANGELOG.md)

## Contributing

We welcome all contributions!

If you're new here, please take a moment to review our contributing guidelines.

[CONTRIBUTING](https://github.com/webpack/eslint-webpack-plugin?tab=contributing-ov-file#contributing)

## License

[MIT](./LICENSE)

[npm]: https://img.shields.io/npm/v/eslint-webpack-plugin.svg
[npm-url]: https://npmjs.com/package/eslint-webpack-plugin
[node]: https://img.shields.io/node/v/eslint-webpack-plugin.svg
[node-url]: https://nodejs.org
[tests]: https://github.com/webpack/eslint-webpack-plugin/workflows/eslint-webpack-plugin/badge.svg
[tests-url]: https://github.com/webpack/eslint-webpack-plugin/actions
[cover]: https://codecov.io/gh/webpack/eslint-webpack-plugin/branch/main/graph/badge.svg
[cover-url]: https://codecov.io/gh/webpack/eslint-webpack-plugin
[discussion]: https://img.shields.io/github/discussions/webpack/webpack
[discussion-url]: https://github.com/webpack/webpack/discussions
[size]: https://packagephobia.now.sh/badge?p=eslint-webpack-plugin
[size-url]: https://packagephobia.now.sh/result?p=eslint-webpack-plugin

---
_Source: https://npm.io/package/eslint-webpack-plugin · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._