chore: initial commit

.commitlintrc.json

@@ -0,0 +1 @@
+{ "extends": ["@commitlint/config-conventional"] }

.devcontainer/Dockerfile

@@ -0,0 +1,2 @@
+ARG VARIANT="16"
+FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:0-${VARIANT}

.devcontainer/devcontainer.json

@@ -0,0 +1,15 @@
+{
+  "name": "html-w3c-validator",
+  "dockerComposeFile": "./docker-compose.yml",
+  "service": "workspace",
+  "workspaceFolder": "/workspace",
+  "extensions": [
+    "editorconfig.editorconfig",
+    "esbenp.prettier-vscode",
+    "dbaeumer.vscode-eslint",
+    "davidanson.vscode-markdownlint",
+    "ms-azuretools.vscode-docker"
+  ],
+  "postAttachCommand": ["npm", "install"],
+  "remoteUser": "node"
+}

.devcontainer/docker-compose.yml

@@ -0,0 +1,10 @@
+version: '3.0'
+
+services:
+  workspace:
+    build:
+      context: './'
+      dockerfile: './Dockerfile'
+    volumes:
+      - '..:/workspace:cached'
+    command: 'sleep infinity'

.editorconfig

@@ -0,0 +1,11 @@
+# For more information see: https://editorconfig.org/
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.eslintignore

@@ -0,0 +1,5 @@
+build
+node_modules
+coverage
+package.json
+package-lock.json

.eslintrc.json

@@ -0,0 +1,21 @@
+{
+  "extends": ["standard-with-typescript", "prettier"],
+  "plugins": ["unicorn", "import", "prettier"],
+  "parserOptions": {
+    "project": "./tsconfig.json"
+  },
+  "env": {
+    "node": true,
+    "jest": true
+  },
+  "rules": {
+    "prettier/prettier": "error",
+    "import/order": [
+      "error",
+      { "groups": ["builtin", "external", "internal"] }
+    ],
+    "import/extensions": ["error", "always"],
+    "unicorn/prefer-node-protocol": "error",
+    "unicorn/prevent-abbreviations": "error"
+  }
+}

.github/ISSUE_TEMPLATE/BUG.md

@@ -0,0 +1,20 @@
+---
+name: '🐛 Bug Report'
+about: 'Report an unexpected problem or unintended behavior.'
+title: '[Bug]'
+labels: 'bug'
+---
+
+<!--
+  Please provide a clear and concise description of what the bug is. Include
+  screenshots if needed. Please make sure your issue has not already been fixed.
+-->
+
+## Steps To Reproduce
+
+1. Step 1
+2. Step 2
+
+## The current behavior
+
+## The expected behavior

.github/ISSUE_TEMPLATE/DOCUMENTATION.md

@@ -0,0 +1,18 @@
+---
+name: '📜 Documentation'
+about: 'Correct spelling errors, improvements or additions to documentation files (README, CONTRIBUTING...).'
+title: '[Documentation]'
+labels: 'documentation'
+---
+
+<!-- Please make sure your issue has not already been fixed. -->
+
+## Documentation
+
+<!-- Please uncomment the type of documentation problem this issue address -->
+
+<!-- Documentation is Missing -->
+<!-- Documentation is Confusing -->
+<!-- Documentation has Typo errors -->
+
+## Proposal

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.md

@@ -0,0 +1,20 @@
+---
+name: '✨ Feature Request'
+about: 'Suggest a new feature idea.'
+title: '[Feature]'
+labels: 'feature request'
+---
+
+<!-- Please make sure your issue has not already been fixed. -->
+
+## Description
+
+<!-- A clear and concise description of the problem or missing capability... -->
+
+## Describe the solution you'd like
+
+<!-- If you have a solution in mind, please describe it. -->
+
+## Describe alternatives you've considered
+
+<!-- Have you considered any alternative solutions or workarounds? -->

.github/ISSUE_TEMPLATE/IMPROVEMENT.md

@@ -0,0 +1,20 @@
+---
+name: '🔧 Improvement'
+about: 'Improve structure/format/performance/refactor/tests of the code.'
+title: '[Improvement]'
+labels: 'improvement'
+---
+
+<!-- Please make sure your issue has not already been fixed. -->
+
+## Type of Improvement
+
+<!-- Please uncomment the type of improvements this issue address -->
+
+<!-- Files and Folders Structure -->
+<!-- Performance -->
+<!-- Refactoring code -->
+<!-- Tests -->
+<!-- Not Sure? -->
+
+## Proposal

.github/ISSUE_TEMPLATE/QUESTION.md

@@ -0,0 +1,8 @@
+---
+name: '🙋 Question'
+about: 'Further information is requested.'
+title: '[Question]'
+labels: 'question'
+---
+
+### Question

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,7 @@
+<!-- Please first discuss the change you wish to make via issue before making a change. It might avoid a waste of your time. -->
+
+## What changes this PR introduce?
+
+## List any relevant issue numbers
+
+## Is there anything you'd like reviewers to focus on?

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'daily'
+
+  - package-ecosystem: 'npm'
+    directory: '/'
+    schedule:
+      interval: 'daily'

.github/workflows/build.yml

@@ -0,0 +1,25 @@
+name: 'Build'
+
+on:
+  push:
+    branches: [master, develop]
+  pull_request:
+    branches: [master, develop]
+
+jobs:
+  build:
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: 'actions/checkout@v2'
+
+      - name: 'Use Node.js'
+        uses: 'actions/setup-node@v2.4.1'
+        with:
+          node-version: '16.x'
+          cache: 'npm'
+
+      - name: 'Install'
+        run: 'npm install'
+
+      - name: 'Build'
+        run: 'npm run build'

.github/workflows/lint.yml

@@ -0,0 +1,37 @@
+name: 'Lint'
+
+on:
+  push:
+    branches: [master, develop]
+  pull_request:
+    branches: [master, develop]
+
+jobs:
+  lint:
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: 'actions/checkout@v2'
+
+      - name: 'Use Node.js'
+        uses: 'actions/setup-node@v2.4.1'
+        with:
+          node-version: '16.x'
+          cache: 'npm'
+
+      - name: 'Install'
+        run: 'npm install'
+
+      - name: 'lint:commit'
+        run: 'npm run lint:commit -- --to "${{ github.sha }}"'
+
+      - name: 'lint:editorconfig'
+        run: 'npm run lint:editorconfig'
+
+      - name: 'lint:markdown'
+        run: 'npm run lint:markdown'
+
+      - name: 'lint:typescript'
+        run: 'npm run lint:typescript'
+
+      - name: 'lint:prettier'
+        run: 'npm run lint:prettier'

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+name: 'Release'
+
+on:
+  push:
+    branches: [master]
+
+jobs:
+  release:
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: 'actions/checkout@v2.3.4'
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: 'Use Node.js'
+        uses: 'actions/setup-node@v2.4.1'
+        with:
+          node-version: '16.x'
+          cache: 'npm'
+
+      - name: 'Install'
+        run: 'npm install'
+
+      - name: 'Build'
+        run: 'npm run build'
+
+      - name: 'Release'
+        run: 'npm run release'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/test.yml

@@ -0,0 +1,25 @@
+name: 'Test'
+
+on:
+  push:
+    branches: [master, develop]
+  pull_request:
+    branches: [master, develop]
+
+jobs:
+  test:
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: 'actions/checkout@v2'
+
+      - name: 'Use Node.js'
+        uses: 'actions/setup-node@v2.4.1'
+        with:
+          node-version: '16.x'
+          cache: 'npm'
+
+      - name: 'Install'
+        run: 'npm install'
+
+      - name: 'Test'
+        run: 'npm run test'

.gitignore

@@ -0,0 +1,36 @@
+# dependencies
+node_modules
+.npm
+
+# production
+build
+.swc
+
+# testing
+coverage
+
+# envs
+.env
+.env.production
+
+# debug
+npm-debug.log*
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+
+# misc
+.DS_Store

.husky/commit-msg

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npm run lint:commit -- --edit

.husky/pre-commit

@@ -0,0 +1,5 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npm run lint:staged
+npm run build

.lintstagedrc.json

@@ -0,0 +1,10 @@
+{
+  "*": ["editorconfig-checker"],
+  "*.{js,ts,jsx,tsx}": [
+    "prettier --write",
+    "eslint --fix",
+    "jest --findRelatedTests"
+  ],
+  "*.{yml,json}": ["prettier --write"],
+  "*.{md}": ["prettier --write", "markdownlint --dot --fix"]
+}

.markdownlint.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD013": false,
+  "MD033": false,
+  "MD041": false
+}

.npmrc

@@ -0,0 +1,2 @@
+save-exact=true
+engine-strict=true

.prettierignore

@@ -0,0 +1,5 @@
+build
+node_modules
+coverage
+package.json
+package-lock.json

.prettierrc.json

@@ -0,0 +1,6 @@
+{
+  "singleQuote": true,
+  "jsxSingleQuote": true,
+  "semi": false,
+  "trailingComma": "none"
+}

.releaserc.json

@@ -0,0 +1,19 @@
+{
+  "branches": [{ "name": "master", "channel": "beta", "prerelease": true }],
+  "plugins": [
+    [
+      "@semantic-release/commit-analyzer",
+      {
+        "preset": "conventionalcommits"
+      }
+    ],
+    [
+      "@semantic-release/release-notes-generator",
+      {
+        "preset": "conventionalcommits"
+      }
+    ],
+    "@semantic-release/npm",
+    "@semantic-release/github"
+  ]
+}

.swcrc

@@ -0,0 +1,22 @@
+{
+  "jsc": {
+    "parser": {
+      "syntax": "typescript",
+      "decorators": true,
+      "dynamicImport": true
+    },
+    "transform": {
+      "legacyDecorator": true,
+      "decoratorMetadata": true
+    },
+    "target": "es2022",
+    "loose": true
+  },
+  "module": {
+    "type": "commonjs",
+    "strict": false,
+    "strictMode": true,
+    "lazy": false,
+    "noInterop": false
+  }
+}

.vscode/extensions.json

@@ -0,0 +1,9 @@
+{
+  "recommendations": [
+    "editorconfig.editorconfig",
+    "esbenp.prettier-vscode",
+    "dbaeumer.vscode-eslint",
+    "davidanson.vscode-markdownlint",
+    "ms-azuretools.vscode-docker"
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,33 @@
+{
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "typescript.preferences.importModuleSpecifierEnding": "js",
+  "prettier.configPath": ".prettierrc.json",
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSave": {
+    "source.fixAll": true
+  },
+  "[markdown]": {
+    "editor.autoClosingBrackets": "always",
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[yaml]": {
+    "editor.autoClosingBrackets": "always",
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[json]": {
+    "editor.autoClosingBrackets": "always",
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[jsonc]": {
+    "editor.autoClosingBrackets": "always",
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[typescript]": {
+    "editor.autoClosingBrackets": "always",
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[javascript]": {
+    "editor.autoClosingBrackets": "always",
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  }
+}

CODE_OF_CONDUCT.md

@@ -0,0 +1,132 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+- The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+contact@divlo.fr.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+[https://www.contributor-covenant.org/version/2/0/code_of_conduct.html][v2.0].
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][mozilla coc].
+
+For answers to common questions about this code of conduct, see the FAQ at
+[https://www.contributor-covenant.org/faq][faq]. Translations are available
+at [https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.0]: https://www.contributor-covenant.org/version/2/0/code_of_conduct.html
+[mozilla coc]: https://github.com/mozilla/diversity
+[faq]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations

CONTRIBUTING.md

@@ -0,0 +1,46 @@
+# 💡 Contributing
+
+Thanks a lot for your interest in contributing to **html-w3c-validator**! 🎉
+
+## Types of contributions
+
+- Reporting a bug.
+- Suggest a new feature idea.
+- Correct spelling errors, improvements or additions to documentation files (README, CONTRIBUTING...).
+- Improve structure/format/performance/refactor/tests of the code.
+
+## Pull Requests
+
+- **Please first discuss** the change you wish to make via [issue](https://github.com/Divlo/html-w3c-validator/issues) before making a change. It might avoid a waste of your time.
+
+- Ensure your code respect linting.
+
+- Make sure your **code passes the tests**.
+
+If you're adding new features to **html-w3c-validator**, please include tests.
+
+## Commits
+
+The commit message guidelines respect [@commitlint/config-conventional](https://github.com/conventional-changelog/commitlint/tree/master/%40commitlint/config-conventional) and [Semantic Versioning](https://semver.org/) for releases.
+
+### Types
+
+Types define which kind of changes you made to the project.
+
+| Types    | Description                                                                                                  |
+| -------- | ------------------------------------------------------------------------------------------------------------ |
+| feat     | A new feature.                                                                                               |
+| fix      | A bug fix.                                                                                                   |
+| docs     | Documentation only changes.                                                                                  |
+| style    | Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc).      |
+| refactor | A code change that neither fixes a bug nor adds a feature.                                                   |
+| perf     | A code change that improves performance.                                                                     |
+| test     | Adding missing tests or correcting existing tests.                                                           |
+| build    | Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm).         |
+| ci       | Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs). |
+| chore    | Other changes that don't modify src or test files.                                                           |
+| revert   | Reverts a previous commit.                                                                                   |
+
+### Scopes
+
+Scopes define what part of the code changed.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Divlo
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,104 @@
+<h1 align="center">html-w3c-validator</h1>
+
+<p align="center">
+  <strong>CLI for validating multiple html pages using <a href="https://validator.w3.org/">validator.w3.org</a>.</strong>
+</p>
+
+</p>
+
+<p align="center">
+  <a href="./CONTRIBUTING.md"><img src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat" /></a>
+  <a href="./LICENSE"><img src="https://img.shields.io/badge/licence-MIT-blue.svg" alt="Licence MIT"/></a>
+  <a href="./CODE_OF_CONDUCT.md"><img src="https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg" alt="Contributor Covenant" /></a>
+  <a href="https://dependabot.com/"><img src="https://badgen.net/github/dependabot/Divlo/html-w3c-validator?icon=dependabot" alt="Dependabot badge" /></a>
+  <br />
+  <a href="https://github.com/Divlo/html-w3c-validator/actions/workflows/build.yml"><img src="https://github.com/Divlo/html-w3c-validator/actions/workflows/build.yml/badge.svg?branch=develop" /></a>
+  <a href="https://github.com/Divlo/html-w3c-validator/actions/workflows/lint.yml"><img src="https://github.com/Divlo/html-w3c-validator/actions/workflows/lint.yml/badge.svg?branch=develop" /></a>
+  <a href="https://github.com/Divlo/html-w3c-validator/actions/workflows/test.yml"><img src="https://github.com/Divlo/html-w3c-validator/actions/workflows/test.yml/badge.svg?branch=develop" /></a>
+  <br />
+  <a href="https://conventionalcommits.org"><img src="https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg" alt="Conventional Commits" /></a>
+  <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>
+  <a href="https://www.npmjs.com/package/html-w3c-validator"><img src="https://img.shields.io/npm/v/html-w3c-validator.svg" alt="npm version"></a>
+</p>
+
+## 📜 About
+
+**html-w3c-validator** is a CLI tool to validate multiple html pages using [validator.w3.org](https://validator.w3.org/).
+
+You might use a JavaScript framework or simply use HTML: **you should validate your production HTML** and this validation should be part of your CI/CD pipeline (tests, linting, etc.).
+
+### Why should I validate my HTML pages?
+
+Quote from [https://validator.w3.org/docs/help.html#why-validate](https://validator.w3.org/docs/help.html#why-validate):
+
+> One of the important maxims of computer programming is: "Be conservative in what you produce; be liberal in what you accept."
+>
+> Browsers follow the second half of this maxim by accepting Web pages and trying to display them even if they're not legal HTML. Usually this means that the browser will try to make educated guesses about what you probably meant. The problem is that different browsers (or even different versions of the same browser) will make different guesses about the same illegal construct; worse, if your HTML is really pathological, the browser could get hopelessly confused and produce a mangled mess, or even crash.
+
+## ⚙️ Getting Started
+
+You can combine **html-w3c-validator** with [start-server-and-test](https://github.com/bahmutov/start-server-and-test) to validate HTML pages of your project.
+
+### Prerequisites
+
+- [Node.js](https://nodejs.org/) >= 16.0.0
+
+### Installation (with [start-server-and-test](https://github.com/bahmutov/start-server-and-test))
+
+```sh
+npm install --save-dev html-w3c-validator start-server-and-test
+```
+
+## ⚙️ Configuration
+
+### `package.json`
+
+```jsonc
+{
+  "scripts": {
+    // Command to start the server serving your HTML pages (e.g: using vercel/serve)
+    "start": "serve ./build",
+
+    // Command to validate your HTML pages
+    "test:html-w3c-validator": "start-server-and-test 'start' 'http://localhost:3000' 'html-w3c-validator'"
+  }
+}
+```
+
+### `.html-w3c-validator.json`
+
+```json
+{
+  "urls": ["http://localhost:3000/", "http://localhost:3000/about"]
+}
+```
+
+## Usage
+
+```sh
+npm run test:html-w3c-validator
+```
+
+Example of output:
+
+```txt
+
+```
+
+### Options
+
+```text
+-V, --version       Output the version number.
+-h, --help          Display help for command.
+--config            Path to a configuration file (default: `.html-w3c-validator.json`).
+```
+
+## 💡 Contributing
+
+Anyone can help to improve the project, submit a Feature Request, a bug report or even correct a simple spelling mistake.
+
+The steps to contribute can be found in the [CONTRIBUTING.md](./CONTRIBUTING.md) file.
+
+## 📄 License
+
+[MIT](./LICENSE)

jest.config.json

@@ -0,0 +1,11 @@
+{
+  "testEnvironment": "node",
+  "resolver": "jest-ts-webcompat-resolver",
+  "transform": {
+    "^.+\\.(t|j)sx?$": ["@swc/jest"]
+  },
+  "rootDir": "./src",
+  "collectCoverage": true,
+  "coverageDirectory": "../coverage/",
+  "coverageReporters": ["text", "cobertura"]
+}

package.json

@@ -0,0 +1,80 @@
+{
+  "name": "html-w3c-validator",
+  "version": "0.0.0-development",
+  "description": "CLI for validating multiple html pages using validator.w3.org.",
+  "author": "Divlo <contact@divlo.fr>",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Divlo/html-w3c-validator.git"
+  },
+  "bugs": {
+    "url": "https://github.com/Divlo/html-w3c-validator/issues"
+  },
+  "homepage": "https://github.com/Divlo/html-w3c-validator#readme",
+  "keywords": [
+    "cli",
+    "html-validator",
+    "w3c",
+    "validator.w3.org"
+  ],
+  "main": "build/index.js",
+  "bin": "build/index.js",
+  "engines": {
+    "node": ">=16.0.0",
+    "npm": ">=8.0.0"
+  },
+  "files": [
+    "build"
+  ],
+  "scripts": {
+    "build": "rimraf ./build && swc ./src --out-dir ./build && tsc",
+    "dev": "swc ./src --out-dir ./build --watch",
+    "lint:commit": "commitlint",
+    "lint:editorconfig": "editorconfig-checker",
+    "lint:markdown": "markdownlint '**/*.md' --dot --ignore node_modules",
+    "lint:typescript": "eslint '**/*.{js,ts,jsx,tsx}'",
+    "lint:prettier": "prettier '.' --check",
+    "lint:staged": "lint-staged",
+    "test": "jest",
+    "release": "semantic-release",
+    "postinstall": "husky install",
+    "prepublishOnly": "pinst --disable",
+    "postpublish": "pinst --enable"
+  },
+  "dependencies": {
+    "chalk": "4.1.2",
+    "clipanion": "3.1.0",
+    "html-validator": "6.0.0",
+    "read-pkg": "5.2.0"
+  },
+  "devDependencies": {
+    "@commitlint/cli": "16.0.1",
+    "@commitlint/config-conventional": "16.0.0",
+    "@swc/cli": "0.1.55",
+    "@swc/core": "1.2.127",
+    "@swc/jest": "0.2.15",
+    "@types/jest": "27.4.0",
+    "@types/node": "17.0.8",
+    "editorconfig-checker": "4.0.2",
+    "eslint": "7.32.0",
+    "eslint-config-prettier": "8.3.0",
+    "eslint-config-standard-with-typescript": "21.0.1",
+    "eslint-plugin-import": "2.25.4",
+    "eslint-plugin-node": "11.1.0",
+    "eslint-plugin-prettier": "4.0.0",
+    "eslint-plugin-promise": "5.1.1",
+    "eslint-plugin-unicorn": "40.0.0",
+    "husky": "7.0.4",
+    "jest": "27.4.7",
+    "jest-mock-extended": "2.0.4",
+    "jest-ts-webcompat-resolver": "1.0.0",
+    "lint-staged": "12.1.5",
+    "markdownlint-cli": "0.30.0",
+    "pinst": "2.1.6",
+    "prettier": "2.5.1",
+    "rimraf": "3.0.2",
+    "semantic-release": "18.0.1",
+    "typescript": "4.5.4"
+  }
+}

src/HTMLValidatorCommand.ts

@@ -0,0 +1,15 @@
+import { Command } from 'clipanion'
+
+// const CURRENT_DIRECTORY = process.cwd()
+
+export class HTMLValidatorCommand extends Command {
+  static usage = {
+    description:
+      'CLI for validating multiple html pages using <https://validator.w3.org/>.'
+  }
+
+  async execute(): Promise<number> {
+    console.log('html-w3c-validator')
+    return 0
+  }
+}

src/__test__/HTMLValidatorCommand.test.ts

@@ -0,0 +1,22 @@
+import { cli } from '../cli.js'
+import { HTMLValidatorCommand } from '../HTMLValidatorCommand.js'
+
+describe('html-w3c-validator', () => {
+  afterEach(() => {
+    jest.clearAllMocks()
+  })
+
+  it('should be instance of the command', async () => {
+    const command = cli.process([])
+    expect(command).toBeInstanceOf(HTMLValidatorCommand)
+  })
+
+  it('succeeds and validate the html correctly', async () => {
+    console.log = jest.fn()
+    const exitCode = await cli.run([], {
+      stdin: process.stdin
+    })
+    expect(console.log).toHaveBeenCalledWith('html-w3c-validator')
+    expect(exitCode).toEqual(0)
+  })
+})

src/cli.ts

@@ -0,0 +1,17 @@
+import path from 'node:path'
+
+import { Builtins, Cli } from 'clipanion'
+import readPackage from 'read-pkg'
+
+import { HTMLValidatorCommand } from './HTMLValidatorCommand.js'
+
+const packageJSON = readPackage.sync({ cwd: path.join(__dirname, '..') })
+
+export const cli = new Cli({
+  binaryLabel: packageJSON.name,
+  binaryName: packageJSON.name,
+  binaryVersion: packageJSON.version
+})
+cli.register(Builtins.HelpCommand)
+cli.register(Builtins.VersionCommand)
+cli.register(HTMLValidatorCommand)

src/index.ts

@@ -0,0 +1,12 @@
+#!/usr/bin/env node
+import chalk from 'chalk'
+import { Cli } from 'clipanion'
+
+import { cli } from './cli.js'
+
+const [, , ...arguments_] = process.argv
+
+cli.runExit(arguments_, Cli.defaultContext).catch(() => {
+  console.error(chalk.red('Error occurred...'))
+  process.exit(1)
+})

tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "commonjs",
+    "lib": ["ESNext"],
+    "moduleResolution": "node",
+    "outDir": "./build",
+    "rootDir": "./src",
+    "noEmit": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true
+  }
+}