# eslint-plugin-pnpm

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[![License][license-src]][license-href]

ESLint plugin to enforce and auto-fix pnpm catalogs.

This plugin consists of two set of rules that applies to `package.json` and `pnpm-workspace.yaml` respectively.

- [`json-` rules](./src/rules/json) applies to `package.json` and requires [`jsonc-eslint-parser`](https://github.com/ota-meshi/jsonc-eslint-parser) to be used as parser.
- [`yaml-` rules](./src/rules/yaml) applies to `pnpm-workspace.yaml` and requires [`yaml-eslint-parser`](https://github.com/ota-meshi/yaml-eslint-parser) to be used as parser.
  - YAML support is still experimental as it might have race conditions with other plugins.

## Setup

```bash
pnpm add -D eslint-plugin-pnpm
```

### Basic Usage

```js
// eslint.config.mjs
import { configs } from 'eslint-plugin-pnpm'

export default [
  {
    ignores: ['**/node_modules/**', '**/dist/**'],
  },
  ...configs.json,
  ...configs.yaml,
]
```

### Manual Configuration

```js
// eslint.config.mjs
import pluginPnpm from 'eslint-plugin-pnpm'
import * as jsoncParser from 'jsonc-eslint-parser'
import * as yamlParser from 'yaml-eslint-parser'

export default [
  {
    ignores: ['**/node_modules/**', '**/dist/**'],
  },
  {
    name: 'pnpm/package.json',
    files: [
      'package.json',
      '**/package.json',
    ],
    languageOptions: {
      parser: jsoncParser,
    },
    plugins: {
      pnpm: pluginPnpm,
    },
    rules: {
      'pnpm/json-enforce-catalog': 'error',
      'pnpm/json-valid-catalog': 'error',
      'pnpm/json-prefer-workspace-settings': 'error',
    },
  },
  {
    name: 'pnpm/pnpm-workspace-yaml',
    files: ['pnpm-workspace.yaml'],
    languageOptions: {
      parser: yamlParser,
    },
    plugins: {
      pnpm: pluginPnpm,
    },
    rules: {
      'pnpm/yaml-no-unused-catalog-item': 'error',
      'pnpm/yaml-no-duplicate-catalog-item': 'error',
      'pnpm/yaml-valid-packages': 'error',
    },
  },
]
```

## Rules

### JSON Rules (`package.json`)

- [`json-enforce-catalog`](./src/rules/json/json-enforce-catalog.ts) - Enforce catalog usage for dependencies
- [`json-valid-catalog`](./src/rules/json/json-valid-catalog.ts) - Validate catalog references in dependencies
- [`json-prefer-workspace-settings`](./src/rules/json/json-prefer-workspace-settings.ts) - Prefer workspace protocol for local dependencies

### YAML Rules (`pnpm-workspace.yaml`)

- [`yaml-no-unused-catalog-item`](./src/rules/yaml/yaml-no-unused-catalog-item.ts) - Disallow unused catalog items
- [`yaml-no-duplicate-catalog-item`](./src/rules/yaml/yaml-no-duplicate-catalog-item.ts) - Disallow duplicate catalog items
- [`yaml-valid-packages`](./src/rules/yaml/yaml-valid-packages.ts) - Ensure package patterns match directories with package.json
- [`yaml-enforce-settings`](./src/rules/yaml/yaml-enforce-settings.ts) - Enforce settings in `pnpm-workspace.yaml`

## Settings

| Name                  | Description                                                 | Type    | Default |
| --------------------- | ----------------------------------------------------------- | ------- | ------- |
| `ensureWorkspaceFile` | Whether to create `pnpm-workspace.yaml` if it doesn't exist | boolean | false   |

## Sponsors

<p align="center">
  <a href="https://cdn.jsdelivr.net/gh/antfu/static/sponsors.svg">
    <img src='https://cdn.jsdelivr.net/gh/antfu/static/sponsors.svg' alt="antfu's sponsors"/>
  </a>
</p>

## License

[MIT](./LICENSE) License © [Anthony Fu](https://github.com/antfu)

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