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110 lines
3.9 KiB
Markdown
110 lines
3.9 KiB
Markdown
<h1 align="center">markdownlint-rule-relative-links</h1>
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<p align="center">
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<strong>Custom rule for <a href="https://github.com/DavidAnson/markdownlint">markdownlint</a> to validate relative links.</strong>
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</p>
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<p align="center">
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<a href="./CONTRIBUTING.md"><img src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat" /></a>
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<a href="./LICENSE"><img src="https://img.shields.io/badge/licence-MIT-blue.svg" alt="Licence MIT"/></a>
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<a href="./CODE_OF_CONDUCT.md"><img src="https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg" alt="Contributor Covenant" /></a>
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<br />
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<a href="https://github.com/theoludwig/markdownlint-rule-relative-links/actions/workflows/lint.yml"><img src="https://github.com/theoludwig/markdownlint-rule-relative-links/actions/workflows/lint.yml/badge.svg?branch=develop" /></a>
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<a href="https://github.com/theoludwig/markdownlint-rule-relative-linksactions/workflows/test.yml"><img src="https://github.com/theoludwig/markdownlint-rule-relative-links/actions/workflows/test.yml/badge.svg?branch=develop" /></a>
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<br />
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<a href="https://conventionalcommits.org"><img src="https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg" alt="Conventional Commits" /></a>
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<a href="https://github.com/semantic-release/semantic-release"><img src="https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg" alt="semantic-release" /></a>
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<a href="https://www.npmjs.com/package/markdownlint-rule-relative-links"><img src="https://img.shields.io/npm/v/markdownlint-rule-relative-links.svg" alt="npm version"></a>
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</p>
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## 📜 About
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**markdownlint-rule-relative-links** is a [markdownlint](https://github.com/DavidAnson/markdownlint) custom rule to validate relative links.
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It ensures that relative links (using `file:` protocol) are working and exists in the file system of the project that uses [markdownlint](https://github.com/DavidAnson/markdownlint).
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### Example
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File structure:
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```txt
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├── abc.txt
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└── awesome.md
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```
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With `awesome.md` content:
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```md
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[abc](./abc.txt)
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[Invalid link](./invalid.txt)
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```
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Running [markdownlint-cli2](https://github.com/DavidAnson/markdownlint-cli2) with `markdownlint-rule-relative-links` will output:
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```sh
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awesome.md:3 relative-links Relative links should be valid [Link "./invalid.txt" should exist in the file system]
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```
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### Related links
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- [DavidAnson/markdownlint#253](https://github.com/DavidAnson/markdownlint/issues/253)
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- [DavidAnson/markdownlint#121](https://github.com/DavidAnson/markdownlint/issues/121)
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- [nschonni/markdownlint-valid-links](https://github.com/nschonni/markdownlint-valid-links)
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## Prerequisites
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- [Node.js](https://nodejs.org/) >= 16.0.0
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## Installation
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```sh
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npm install --save-dev markdownlint-rule-relative-links
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```
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## Configuration
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There are various ways [markdownlint](https://github.com/DavidAnson/markdownlint) can be configured using objects, config files etc. For more information on configuration refer to [options.config](https://github.com/DavidAnson/markdownlint#optionsconfig).
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We recommend configuring [markdownlint-cli2](https://github.com/DavidAnson/markdownlint-cli2) over [markdownlint-cli](https://github.com/igorshubovych/markdownlint-cli) for compatibility with the [vscode-markdownlint](https://github.com/DavidAnson/vscode-markdownlint) extension.
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`.markdownlint-cli2.jsonc`
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```json
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{
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"config": {
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"default": true,
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"relative-links": true
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},
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"globs": ["**/*.{md,mdx}"],
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"ignores": ["**/node_modules"],
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"customRules": ["markdownlint-rule-relative-links"]
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}
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```
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`package.json`
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```json
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{
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"scripts": {
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"lint:markdown": "markdownlint-cli2"
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}
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}
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```
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## Usage
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```sh
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npm run lint:markdown
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```
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## 💡 Contributing
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Anyone can help to improve the project, submit a Feature Request, a bug report or even correct a simple spelling mistake.
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The steps to contribute can be found in the [CONTRIBUTING.md](./CONTRIBUTING.md) file.
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## 📄 License
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[MIT](./LICENSE)
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