fix: only show error messages related to configured severities

fixes #4

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,6 +1,6 @@
 <!-- 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?
+# What changes this PR introduce?
 
 ## List any relevant issue numbers
 

.github/workflows/build.yml

@@ -10,16 +10,18 @@ jobs:
   build:
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: 'actions/checkout@v3.0.0'
+      - uses: 'actions/checkout@v3.5.3'
 
-      - name: 'Use Node.js'
-        uses: 'actions/setup-node@v3.1.0'
+      - name: 'Setup Node.js'
+        uses: 'actions/setup-node@v3.6.0'
         with:
           node-version: 'lts/*'
           cache: 'npm'
 
-      - name: 'Install'
-        run: 'npm install'
+      - name: 'Install dependencies'
+        run: 'npm clean-install'
 
       - name: 'Build'
         run: 'npm run build'
+
+      - run: 'npm run build:typescript'

.github/workflows/lint.yml

@@ -10,19 +10,19 @@ jobs:
   lint:
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: 'actions/checkout@v3.0.0'
+      - uses: 'actions/checkout@v3.5.3'
 
-      - name: 'Use Node.js'
-        uses: 'actions/setup-node@v3.1.0'
+      - name: 'Setup Node.js'
+        uses: 'actions/setup-node@v3.6.0'
         with:
           node-version: 'lts/*'
           cache: 'npm'
 
-      - name: 'Install'
-        run: 'npm install'
+      - name: 'Install dependencies'
+        run: 'npm clean-install'
 
       - run: 'npm run lint:commit -- --to "${{ github.sha }}"'
       - run: 'npm run lint:editorconfig'
       - run: 'npm run lint:markdown'
-      - run: 'npm run lint:typescript'
+      - run: 'npm run lint:eslint'
       - run: 'npm run lint:prettier'

.github/workflows/release.yml

@@ -7,24 +7,34 @@ on:
 jobs:
   release:
     runs-on: 'ubuntu-latest'
+    permissions:
+      contents: 'write'
+      issues: 'write'
+      pull-requests: 'write'
+      id-token: 'write'
     steps:
-      - uses: 'actions/checkout@v3.0.0'
+      - uses: 'actions/checkout@v3.5.3'
         with:
           fetch-depth: 0
           persist-credentials: false
 
-      - name: 'Use Node.js'
-        uses: 'actions/setup-node@v3.1.0'
+      - name: 'Setup Node.js'
+        uses: 'actions/setup-node@v3.6.0'
         with:
           node-version: 'lts/*'
           cache: 'npm'
 
-      - name: 'Install'
-        run: 'npm install'
+      - name: 'Install dependencies'
+        run: 'npm clean-install'
 
       - name: 'Build'
         run: 'npm run build'
 
+      - run: 'npm run build:typescript'
+
+      - name: 'Verify the integrity of provenance attestations and registry signatures for installed dependencies'
+        run: 'npm audit signatures'
+
       - name: 'Release'
         run: 'npm run release'
         env:

.github/workflows/test.yml

@@ -10,16 +10,16 @@ jobs:
   test:
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: 'actions/checkout@v3.0.0'
+      - uses: 'actions/checkout@v3.5.3'
 
-      - name: 'Use Node.js'
-        uses: 'actions/setup-node@v3.1.0'
+      - name: 'Setup Node.js'
+        uses: 'actions/setup-node@v3.6.0'
         with:
           node-version: 'lts/*'
           cache: 'npm'
 
-      - name: 'Install'
-        run: 'npm install'
+      - name: 'Install dependencies'
+        run: 'npm clean-install'
 
       - name: 'Build'
         run: 'npm run build'

.html-w3c-validatorrc.json

@@ -0,0 +1,3 @@
+{
+  "files": ["./example/build/index.html", "./example/build/about.html"]
+}

.husky/commit-msg

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

.husky/pre-commit

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

.markdownlint-cli2.jsonc

@@ -0,0 +1,11 @@
+{
+  "config": {
+    "extends": "markdownlint/style/prettier",
+    "relative-links": true,
+    "default": true,
+    "MD033": false
+  },
+  "globs": ["**/*.{md,mdx}"],
+  "ignores": ["**/node_modules"],
+  "customRules": ["markdownlint-rule-relative-links"]
+}

.markdownlint.json

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

.npmrc

@@ -1 +1,2 @@
 save-exact=true
+provenance=true

.prettierignore

@@ -0,0 +1 @@
+fixtures

.swcrc

@@ -1,22 +1,13 @@
 {
+  "sourceMaps": true,
   "jsc": {
     "parser": {
       "syntax": "typescript",
-      "decorators": true,
       "dynamicImport": true
     },
-    "transform": {
-      "legacyDecorator": true,
-      "decoratorMetadata": true
-    },
-    "target": "es2022",
-    "loose": true
+    "target": "es2022"
   },
   "module": {
-    "type": "es6",
-    "strict": false,
-    "strictMode": true,
-    "lazy": false,
-    "noInterop": false
+    "type": "es6"
   }
 }

.taprc

@@ -1,9 +0,0 @@
-ts: false
-jsx: false
-flow: false
-check-coverage: false
-coverage: false
-timeout: 120000
-
-files:
-  - 'build/**/*.test.js'

.vscode/extensions.json

@@ -3,7 +3,6 @@
     "editorconfig.editorconfig",
     "esbenp.prettier-vscode",
     "dbaeumer.vscode-eslint",
-    "davidanson.vscode-markdownlint",
-    "ms-azuretools.vscode-docker"
+    "davidanson.vscode-markdownlint"
   ]
 }

.vscode/settings.json

@@ -6,5 +6,9 @@
   "editor.formatOnSave": true,
   "editor.codeActionsOnSave": {
     "source.fixAll": true
-  }
+  },
+  "eslint.options": {
+    "ignorePath": ".gitignore"
+  },
+  "prettier.ignorePath": ".gitignore"
 }

CODE_OF_CONDUCT.md

@@ -60,7 +60,7 @@ representative at an online or offline event.
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
 reported to the community leaders responsible for enforcement at
-contact@divlo.fr.
+<contact@theoludwig.fr>.
 All complaints will be reviewed and investigated promptly and fairly.
 
 All community leaders are obligated to respect the privacy and security of the

CONTRIBUTING.md

@@ -2,6 +2,14 @@
 
 Thanks a lot for your interest in contributing to **html-w3c-validator**! 🎉
 
+## Code of Conduct
+
+**html-w3c-validator** adopted the [Contributor Covenant](https://www.contributor-covenant.org/) as its Code of Conduct, and we expect project participants to adhere to it. Please read [the full text](./CODE_OF_CONDUCT.md) so that you can understand what actions will and will not be tolerated.
+
+## Open Development
+
+All work on **html-w3c-validator** happens directly on this repository. Both core team members and external contributors send pull requests which go through the same review process.
+
 ## Types of contributions
 
 - Reporting a bug.
@@ -11,7 +19,7 @@ Thanks a lot for your interest in contributing to **html-w3c-validator**! 🎉
 
 ## 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.
+- **Please first discuss** the change you wish to make via [issue](https://github.com/theoludwig/html-w3c-validator/issues) before making a change. It might avoid a waste of your time.
 
 - Ensure your code respect linting.
 
@@ -21,26 +29,4 @@ 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.
+The commit message guidelines adheres to [Conventional Commits](https://www.conventionalcommits.org/) and [Semantic Versioning](https://semver.org/) for releases.

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) Divlo
+Copyright (c) Théo LUDWIG
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -11,9 +11,9 @@
   <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>
   <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>
+  <a href="https://github.com/theoludwig/html-w3c-validator/actions/workflows/build.yml"><img src="https://github.com/theoludwig/html-w3c-validator/actions/workflows/build.yml/badge.svg?branch=develop" /></a>
+  <a href="https://github.com/theoludwig/html-w3c-validator/actions/workflows/lint.yml"><img src="https://github.com/theoludwig/html-w3c-validator/actions/workflows/lint.yml/badge.svg?branch=develop" /></a>
+  <a href="https://github.com/theoludwig/html-w3c-validator/actions/workflows/test.yml"><img src="https://github.com/theoludwig/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>
@@ -59,7 +59,7 @@ npm install --save-dev html-w3c-validator start-server-and-test
     "start": "serve \"./build\"",
 
     // Command to validate your HTML pages
-    "test:html-w3c-validator": "start-server-and-test \"start\" \"http://localhost:3000\" \"html-w3c-validator\""
+    "test:html-w3c-validator": "start-server-and-test \"start\" \"http://127.0.0.1:3000\" \"html-w3c-validator\""
   }
 }
 ```
@@ -68,10 +68,13 @@ npm install --save-dev html-w3c-validator start-server-and-test
 
 ```jsonc
 {
-  "urls": ["http://localhost:3000/", "http://localhost:3000/about"],
+  "urls": ["http://127.0.0.1:3000/", "http://127.0.0.1:3000/about"],
 
   // You can also specify HTML files instead of URLs
-  "files": ["./index.html", "./about.html"]
+  "files": ["./index.html", "./about.html"],
+
+  // Specify the severities of the validator (default: ["warning", "error"])
+  "severities": ["info", "warning", "error"]
 }
 ```
 
@@ -84,8 +87,8 @@ npm run test:html-w3c-validator
 Example of output (in case of success):
 
 ```txt
-✔ Validating http://localhost:3000/
-✔ Validating http://localhost:3000/about
+✔ Validating http://127.0.0.1:3000/
+✔ Validating http://127.0.0.1:3000/about
 
 Success: HTML validation (W3C) passed! 🎉
 ```

example/.html-w3c-validatorrc.json

@@ -1,4 +1,4 @@
 {
-  "urls": ["http://localhost:3000/", "http://localhost:3000/about"],
+  "urls": ["http://127.0.0.1:3000/", "http://127.0.0.1:3000/about"],
   "files": ["./build/index.html", "./build/about.html"]
 }

example/build/about.html

@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />

example/build/index.html

@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />

example/package.json

@@ -2,12 +2,12 @@
   "name": "example",
   "private": true,
   "scripts": {
-    "start": "serve \"./build\"",
-    "test:html-w3c-validator": "start-server-and-test \"start\" \"http://localhost:3000\" \"html-w3c-validator\""
+    "start": "serve ./build",
+    "test:html-w3c-validator": "start-server-and-test \"start\" \"http://127.0.0.1:3000\" \"html-w3c-validator\""
   },
   "devDependencies": {
-    "serve": "13.0.2",
-    "start-server-and-test": "1.14.0",
+    "serve": "14.2.0",
+    "start-server-and-test": "2.0.0",
     "html-w3c-validator": "file:.."
   }
 }

package.json

@@ -4,16 +4,16 @@
   "public": true,
   "description": "CLI for validating multiple html pages using validator.w3.org.",
   "type": "module",
-  "author": "Divlo <contact@divlo.fr>",
+  "author": "Théo LUDWIG <contact@theoludwig.fr>",
   "license": "MIT",
   "repository": {
     "type": "git",
-    "url": "https://github.com/Divlo/html-w3c-validator.git"
+    "url": "https://github.com/theoludwig/html-w3c-validator.git"
   },
   "bugs": {
-    "url": "https://github.com/Divlo/html-w3c-validator/issues"
+    "url": "https://github.com/theoludwig/html-w3c-validator/issues"
   },
-  "homepage": "https://github.com/Divlo/html-w3c-validator#readme",
+  "homepage": "https://github.com/theoludwig/html-w3c-validator#readme",
   "keywords": [
     "cli",
     "html-validator",
@@ -22,64 +22,71 @@
   ],
   "main": "build/index.js",
   "bin": "build/index.js",
+  "files": [
+    "build",
+    "!**/*.test.js",
+    "!**/*.map"
+  ],
+  "publishConfig": {
+    "access": "public",
+    "provenance": true
+  },
   "engines": {
     "node": ">=16.0.0",
-    "npm": ">=8.0.0"
+    "npm": ">=9.0.0"
   },
-  "files": [
-    "build"
-  ],
   "scripts": {
-    "build": "rimraf ./build && swc ./src --out-dir ./build && tsc",
+    "build": "rimraf ./build && swc ./src --out-dir ./build",
+    "build:typescript": "tsc",
+    "start": "node --enable-source-maps build/index.js",
     "lint:commit": "commitlint",
     "lint:editorconfig": "editorconfig-checker",
-    "lint:markdown": "markdownlint \"**/*.md\" --dot --ignore-path \".gitignore\"",
-    "lint:typescript": "eslint \"**/*.{js,jsx,ts,tsx}\" --ignore-path \".gitignore\"",
-    "lint:prettier": "prettier \".\" --check --ignore-path \".gitignore\"",
+    "lint:markdown": "markdownlint-cli2",
+    "lint:eslint": "eslint . --max-warnings 0 --report-unused-disable-directives --ignore-path .gitignore",
+    "lint:prettier": "prettier . --check",
     "lint:staged": "lint-staged",
-    "test": "tap",
-    "release": "semantic-release",
-    "postinstall": "husky install",
-    "prepublishOnly": "pinst --disable",
-    "postpublish": "pinst --enable"
+    "test": "node --enable-source-maps --test build/",
+    "release": "semantic-release"
   },
   "dependencies": {
-    "chalk": "5.0.1",
-    "clipanion": "3.1.0",
-    "html-validator": "6.0.0",
-    "ora": "6.1.0",
-    "read-pkg": "7.1.0",
-    "table": "6.8.0"
+    "chalk": "5.3.0",
+    "clipanion": "3.2.1",
+    "html-validator": "6.0.1",
+    "log-symbols": "5.1.0",
+    "ora": "7.0.1",
+    "read-pkg": "8.0.0",
+    "table": "6.8.1"
   },
   "devDependencies": {
-    "@commitlint/cli": "16.2.3",
-    "@commitlint/config-conventional": "16.2.1",
-    "@swc/cli": "0.1.57",
-    "@swc/core": "1.2.163",
-    "@types/html-validator": "5.0.2",
+    "@commitlint/cli": "17.7.0",
+    "@commitlint/config-conventional": "17.7.0",
+    "@swc/cli": "0.1.62",
+    "@swc/core": "1.3.75",
+    "@tsconfig/strictest": "2.0.1",
+    "@types/html-validator": "5.0.3",
     "@types/mock-fs": "4.13.1",
-    "@types/node": "17.0.23",
-    "@types/tap": "15.0.6",
-    "@typescript-eslint/eslint-plugin": "5.18.0",
-    "editorconfig-checker": "4.0.2",
-    "eslint": "8.12.0",
-    "eslint-config-conventions": "2.0.0",
-    "eslint-config-prettier": "8.5.0",
-    "eslint-plugin-import": "2.26.0",
-    "eslint-plugin-prettier": "4.0.0",
-    "eslint-plugin-promise": "6.0.0",
-    "eslint-plugin-unicorn": "42.0.0",
-    "execa": "6.1.0",
-    "husky": "7.0.4",
-    "lint-staged": "12.3.7",
-    "markdownlint-cli": "0.31.1",
-    "mock-fs": "5.1.2",
-    "pinst": "3.0.0",
-    "prettier": "2.6.2",
-    "rimraf": "3.0.2",
-    "semantic-release": "19.0.2",
-    "serve": "13.0.2",
-    "tap": "16.0.1",
-    "typescript": "4.6.3"
+    "@types/node": "20.4.9",
+    "@types/sinon": "10.0.16",
+    "@typescript-eslint/eslint-plugin": "6.3.0",
+    "@typescript-eslint/parser": "6.3.0",
+    "editorconfig-checker": "5.1.1",
+    "eslint": "8.46.0",
+    "eslint-config-conventions": "11.0.1",
+    "eslint-config-prettier": "9.0.0",
+    "eslint-plugin-import": "2.28.0",
+    "eslint-plugin-prettier": "5.0.0",
+    "eslint-plugin-promise": "6.1.1",
+    "eslint-plugin-unicorn": "48.0.1",
+    "execa": "7.2.0",
+    "lint-staged": "13.2.3",
+    "markdownlint-cli2": "0.8.1",
+    "markdownlint-rule-relative-links": "2.1.0",
+    "mock-fs": "5.2.0",
+    "prettier": "3.0.1",
+    "rimraf": "5.0.1",
+    "semantic-release": "21.0.7",
+    "serve": "14.2.0",
+    "sinon": "15.2.0",
+    "typescript": "5.1.6"
   }
 }

src/HTMLValidatorCommand.ts

@@ -1,23 +1,30 @@
 import path from 'node:path'
 import fs from 'node:fs'
 
-import { Command } from 'clipanion'
+import { Command, Option } from 'clipanion'
+import * as typanion from 'typanion'
 import chalk from 'chalk'
 import ora from 'ora'
-import validateHTML, {
+import logSymbols from 'log-symbols'
+import type {
   ValidationMessageLocationObject,
   ParsedJsonAsValidationResults
 } from 'html-validator'
+import validateHTML from 'html-validator'
 import { table } from 'table'
 
 import { isExistingPath } from './utils/isExistingPath.js'
 
-const CURRENT_DIRECTORY = process.cwd()
-const CONFIG_FILE_NAME = '.html-w3c-validatorrc.json'
+export const CONFIG_FILE_NAME = '.html-w3c-validatorrc.json'
+
+export const SEVERITIES = ['error', 'warning', 'info'] as const
+
+export type Severity = (typeof SEVERITIES)[number]
 
 interface Config {
   urls?: string[]
   files?: string[]
+  severities?: Severity[]
 }
 
 interface Error {
@@ -25,21 +32,44 @@ interface Error {
   messagesTable: string[][]
 }
 
+interface Result {
+  data: string
+  isSuccess: boolean
+}
+
+const printResults = (results: Result[]): void => {
+  for (const result of results) {
+    if (result.isSuccess) {
+      console.log(logSymbols.success, result.data)
+    } else {
+      console.log(logSymbols.error, result.data)
+    }
+  }
+}
+
 export class HTMLValidatorCommand extends Command {
-  static usage = {
+  static override usage = {
     description:
       'CLI for validating multiple html pages using <https://validator.w3.org/>.'
   }
 
-  async execute(): Promise<number> {
-    const configPath = path.join(CURRENT_DIRECTORY, CONFIG_FILE_NAME)
+  public currentWorkingDirectory = Option.String(
+    '--current-working-directory',
+    process.cwd(),
+    {
+      description: 'The current working directory.',
+      validator: typanion.isString()
+    }
+  )
+
+  public async execute(): Promise<number> {
+    const configPath = path.join(this.currentWorkingDirectory, CONFIG_FILE_NAME)
     try {
       if (!(await isExistingPath(configPath))) {
         throw new Error(
-          `No config file found at ${configPath}. Please create ${CONFIG_FILE_NAME}.`
+          `No config file found at ${configPath}. Please create "${CONFIG_FILE_NAME}".`
         )
       }
-
       const configData = await fs.promises.readFile(configPath, {
         encoding: 'utf-8'
       })
@@ -50,12 +80,19 @@ export class HTMLValidatorCommand extends Command {
       } catch {
         isValidConfig = false
       }
-      isValidConfig =
-        isValidConfig &&
-        (Array.isArray(config.urls) || Array.isArray(config.urls))
       if (!isValidConfig) {
         throw new Error(
-          `Invalid config file at ${configPath}. Please check the syntax.`
+          `Invalid config file at "${configPath}". Please check the JSON syntax.`
+        )
+      }
+      if (config.urls != null && !Array.isArray(config.urls)) {
+        throw new Error(
+          `Invalid config file at "${configPath}". Please include an array of URLs.`
+        )
+      }
+      if (config.files != null && !Array.isArray(config.files)) {
+        throw new Error(
+          `Invalid config file at "${configPath}". Please include an array of files.`
         )
       }
       const urls =
@@ -71,74 +108,115 @@ export class HTMLValidatorCommand extends Command {
               return { type: 'file', data: file }
             })
       const dataToValidate = [...urls, ...files]
-      const errors: Error[] = []
-      let isValid = true
-      for (const { data, type } of dataToValidate) {
-        const loader = ora(`Validating ${data}`).start()
-        try {
-          const options = {
-            format: 'json' as 'json' | undefined
-          }
-          let result: ParsedJsonAsValidationResults | undefined
-          if (type === 'url') {
-            result = await validateHTML({
-              url: data,
-              isLocal: true,
-              ...options
-            })
-          } else if (type === 'file') {
-            const htmlPath = path.resolve(CURRENT_DIRECTORY, data)
-            if (!(await isExistingPath(htmlPath))) {
-              throw new Error(
-                `No file found at ${htmlPath}. Please check the path.`
-              )
-            }
-            const html = await fs.promises.readFile(htmlPath, {
-              encoding: 'utf-8'
-            })
-            result = await validateHTML({
-              data: html,
-              ...options
-            })
-          } else {
-            throw new Error('Invalid type')
-          }
-          const isValidHTML = result.messages.length === 0
-          if (isValidHTML) {
-            loader.succeed()
-          } else {
-            loader.fail()
-            const messagesTable: string[][] = []
-            for (const message of result.messages) {
-              const row: string[] = []
-              if (message.type === 'error') {
-                row.push(chalk.red(message.type))
-              } else {
-                row.push(chalk.yellow(message.type))
-              }
-              row.push(message.message)
-              const violation = message as ValidationMessageLocationObject
-              if (violation.extract != null) {
-                row.push(
-                  `line: ${violation.lastLine}, column: ${violation.firstColumn}-${violation.lastColumn}`
-                )
-              }
-              messagesTable.push(row)
-            }
-            errors.push({ data, messagesTable })
-            isValid = false
-          }
-        } catch (error) {
-          loader.fail()
-          isValid = false
-          if (error instanceof Error) {
-            const messagesTable: string[][] = [[error.message]]
-            errors.push({ data, messagesTable })
-          }
+      if (dataToValidate.length === 0) {
+        throw new Error(
+          `Invalid config file at "${configPath}". Please add URLs or files.`
+        )
+      }
+      const severities: Severity[] = config.severities ?? ['warning', 'error']
+      for (const severity of severities) {
+        if (!SEVERITIES.includes(severity)) {
+          throw new Error(
+            `Invalid config file at "${configPath}". Please add valid severities (${SEVERITIES.join(
+              ', '
+            )}).`
+          )
         }
       }
+      if (severities.length === 0) {
+        throw new Error(
+          `Invalid config file at "${configPath}". Please add valid severities (${SEVERITIES.join(
+            ', '
+          )}).`
+        )
+      }
+      const errors: Error[] = []
+      let isValid = true
+      const loader = ora(`Validating HTML (W3C)...`).start()
+      const results: Result[] = []
+      await Promise.all(
+        dataToValidate.map(async ({ data, type }) => {
+          try {
+            const options = {
+              format: 'json' as 'json' | undefined
+            }
+            let result: ParsedJsonAsValidationResults | undefined
+            if (type === 'url') {
+              result = await validateHTML({
+                url: data,
+                isLocal: true,
+                ...options
+              })
+            } else if (type === 'file') {
+              const htmlPath = path.resolve(this.currentWorkingDirectory, data)
+              if (!(await isExistingPath(htmlPath))) {
+                throw new Error(
+                  `No file found at "${htmlPath}". Please check the path.`
+                )
+              }
+              const html = await fs.promises.readFile(htmlPath, {
+                encoding: 'utf-8'
+              })
+              result = await validateHTML({
+                data: html,
+                ...options
+              })
+            } else {
+              throw new Error('Invalid type')
+            }
+            const hasErrors = result.messages.some((message) => {
+              return (
+                severities.includes(message.type as Severity) ||
+                severities.includes(message.subType as Severity)
+              )
+            })
+            if (!hasErrors) {
+              results.push({ data, isSuccess: true })
+            } else {
+              results.push({ data, isSuccess: false })
+              const messagesTable: string[][] = []
+              for (const message of result.messages) {
+                if (
+                  !severities.includes(message.type as Severity) &&
+                  !severities.includes(message.subType as Severity)
+                ) {
+                  continue
+                }
 
+                const row: string[] = []
+                if (message.type === 'info') {
+                  if (message.subType === 'warning') {
+                    row.push(chalk.yellow(message.subType))
+                  } else {
+                    row.push(chalk.blue(message.type))
+                  }
+                } else {
+                  row.push(chalk.red(message.type))
+                }
+                row.push(message.message)
+                const violation = message as ValidationMessageLocationObject
+                if (violation.extract != null) {
+                  row.push(
+                    `line: ${violation.lastLine}, column: ${violation.firstColumn}-${violation.lastColumn}`
+                  )
+                }
+                messagesTable.push(row)
+              }
+              errors.push({ data, messagesTable })
+              isValid = false
+            }
+          } catch (error) {
+            isValid = false
+            if (error instanceof Error) {
+              const messagesTable: string[][] = [[error.message]]
+              errors.push({ data, messagesTable })
+            }
+          }
+        })
+      )
       if (!isValid) {
+        loader.fail()
+        printResults(results)
         for (const error of errors) {
           console.error(`\n${error.data}`)
           console.error(table(error.messagesTable))
@@ -147,10 +225,10 @@ export class HTMLValidatorCommand extends Command {
         console.error()
         throw new Error('HTML validation (W3C) failed!')
       }
-      console.log()
-      console.log(
+      loader.succeed(
         `${chalk.bold.green('Success:')} HTML validation (W3C) passed! 🎉`
       )
+      printResults(results)
       return 0
     } catch (error) {
       if (error instanceof Error) {

src/__test__/HTMLValidatorCommand.test.ts

@@ -1,21 +1,416 @@
-import tap from 'tap'
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import path from 'node:path'
+import { PassThrough } from 'node:stream'
+
+import sinon from 'sinon'
 import { execa } from 'execa'
+import { table } from 'table'
+import chalk from 'chalk'
+import logSymbols from 'log-symbols'
 
 import { cli } from '../cli.js'
-import { HTMLValidatorCommand } from '../HTMLValidatorCommand.js'
+import {
+  HTMLValidatorCommand,
+  CONFIG_FILE_NAME,
+  SEVERITIES
+} from '../HTMLValidatorCommand.js'
 
-await tap.test('html-w3c-validator', async (t) => {
-  await t.test('should be instance of the command', async (t) => {
-    const command = cli.process([])
-    t.equal(command instanceof HTMLValidatorCommand, true)
+const FIXTURES_PATH = path.join(process.cwd(), 'src', '__test__', 'fixtures')
+
+await test('html-w3c-validator', async (t) => {
+  t.afterEach(() => {
+    sinon.restore()
   })
 
-  await t.test('succeeds and validate the html correctly', async (t) => {
-    const exampleURL = new URL('../../example', import.meta.url)
-    process.chdir(exampleURL.pathname)
-    await execa('rimraf', ['node_modules'])
-    await execa('npm', ['install'])
-    const { exitCode } = await execa('npm', ['run', 'test:html-w3c-validator'])
-    t.equal(exitCode, 0)
+  await t.test('should be instance of the command', async () => {
+    const command = cli.process([])
+    assert(command instanceof HTMLValidatorCommand)
+  })
+
+  await t.test(
+    'succeeds and validate the html correctly (example)',
+    async () => {
+      const exampleURL = new URL('../../example', import.meta.url)
+      process.chdir(exampleURL.pathname)
+      await execa('rimraf', ['node_modules'])
+      await execa('npm', ['install'])
+      const { exitCode } = await execa('npm', [
+        'run',
+        'test:html-w3c-validator'
+      ])
+      assert.strictEqual(exitCode, 0)
+    }
+  )
+
+  await t.test(
+    'succeeds and validate the html correctly (example without working directory)',
+    async () => {
+      const logs: string[] = []
+      sinon.stub(console, 'log').value((log: string) => {
+        logs.push(log)
+      })
+      const consoleLogSpy = sinon.spy(console, 'log')
+      const stream = new PassThrough()
+      const exitCode = await cli.run([], {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      })
+      stream.end()
+      assert.strictEqual(exitCode, 0)
+      assert.strictEqual(
+        consoleLogSpy.calledWith(
+          logSymbols.success,
+          './example/build/index.html'
+        ),
+        true,
+        logs.join('\n')
+      )
+      assert.strictEqual(
+        consoleLogSpy.calledWith(
+          logSymbols.success,
+          './example/build/about.html'
+        ),
+        true,
+        logs.join('\n')
+      )
+    }
+  )
+
+  await t.test(
+    'succeeds and validate the html correctly (fixture)',
+    async () => {
+      const workingDirectory = path.join(FIXTURES_PATH, 'success')
+      const logs: string[] = []
+      sinon.stub(console, 'log').value((log: string) => {
+        logs.push(log)
+      })
+      const consoleLogSpy = sinon.spy(console, 'log')
+      const stream = new PassThrough()
+      const exitCode = await cli.run(
+        [`--current-working-directory=${workingDirectory}`],
+        {
+          stdin: process.stdin,
+          stdout: stream,
+          stderr: stream
+        }
+      )
+      stream.end()
+      assert.strictEqual(exitCode, 0)
+      assert.strictEqual(
+        consoleLogSpy.calledWith(logSymbols.success, './build/index.html'),
+        true,
+        logs.join('\n')
+      )
+      assert.strictEqual(
+        consoleLogSpy.calledWith(logSymbols.success, './build/about.html'),
+        true,
+        logs.join('\n')
+      )
+    }
+  )
+
+  await t.test('fails with not found config', async () => {
+    const workingDirectory = path.join(FIXTURES_PATH, 'error-config-not-found')
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` No config file found at ${configPath}. Please create "${CONFIG_FILE_NAME}".`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid JSON config', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-config-invalid-json'
+    )
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` Invalid config file at "${configPath}". Please check the JSON syntax.`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid URLs config', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-config-invalid-urls'
+    )
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` Invalid config file at "${configPath}". Please include an array of URLs.`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid files config', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-config-invalid-files'
+    )
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` Invalid config file at "${configPath}". Please include an array of files.`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid files and urls config', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-config-invalid-files-and-urls'
+    )
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` Invalid config file at "${configPath}". Please add URLs or files.`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid severities config', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-config-invalid-severities'
+    )
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` Invalid config file at "${configPath}". Please add valid severities (${SEVERITIES.join(
+            ', '
+          )}).`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid empty severities config', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-config-invalid-severities-empty'
+    )
+    const configPath = path.join(workingDirectory, CONFIG_FILE_NAME)
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') +
+          ` Invalid config file at "${configPath}". Please add valid severities (${SEVERITIES.join(
+            ', '
+          )}).`
+      ),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid files paths to check', async () => {
+    const workingDirectory = path.join(
+      FIXTURES_PATH,
+      'error-invalid-files-paths-to-check'
+    )
+    const htmlPath = path.resolve(workingDirectory, 'index.html')
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    const messagesTable = [
+      [`No file found at "${htmlPath}". Please check the path.`]
+    ]
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') + ' HTML validation (W3C) failed!'
+      ),
+      true,
+      errors.join('\n')
+    )
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(table(messagesTable)),
+      true,
+      errors.join('\n')
+    )
+  })
+
+  await t.test('fails with invalid W3C HTML', async () => {
+    const workingDirectory = path.join(FIXTURES_PATH, 'error-invalid-w3c-html')
+    const errors: string[] = []
+    sinon.stub(console, 'error').value((error: string) => {
+      errors.push(error)
+    })
+    const consoleErrorSpy = sinon.spy(console, 'error')
+    const stream = new PassThrough()
+    const exitCode = await cli.run(
+      [`--current-working-directory=${workingDirectory}`],
+      {
+        stdin: process.stdin,
+        stdout: stream,
+        stderr: stream
+      }
+    )
+    stream.end()
+    assert.strictEqual(exitCode, 1)
+    const messagesTable = [
+      [
+        chalk.yellow('warning'),
+        'Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.',
+        'line: 2, column: 16-6'
+      ]
+    ]
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(
+        chalk.bold.red('Error:') + ' HTML validation (W3C) failed!'
+      ),
+      true,
+      errors.join('\n')
+    )
+    assert.strictEqual(
+      consoleErrorSpy.calledWith(table(messagesTable)),
+      true,
+      errors.join('\n')
+    )
   })
 })

src/__test__/fixtures/error-config-invalid-files-and-urls/.html-w3c-validatorrc.json

@@ -0,0 +1,4 @@
+{
+  "urls": [],
+  "files": []
+}

src/__test__/fixtures/error-config-invalid-files/.html-w3c-validatorrc.json

@@ -0,0 +1,3 @@
+{
+  "files": "Invalid"
+}

src/__test__/fixtures/error-config-invalid-json/.html-w3c-validatorrc.json

@@ -0,0 +1 @@
+Invalid JSON

src/__test__/fixtures/error-config-invalid-severities-empty/.html-w3c-validatorrc.json

@@ -0,0 +1,4 @@
+{
+  "files": ["./index.html"],
+  "severities": []
+}

src/__test__/fixtures/error-config-invalid-severities-empty/index.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Home</title>
+  </head>
+  <body></body>
+</html>

src/__test__/fixtures/error-config-invalid-severities/.html-w3c-validatorrc.json

@@ -0,0 +1,4 @@
+{
+  "files": ["./index.html"],
+  "severities": ["errors-invalid"]
+}

src/__test__/fixtures/error-config-invalid-severities/index.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Home</title>
+  </head>
+  <body></body>
+</html>

src/__test__/fixtures/error-config-invalid-urls/.html-w3c-validatorrc.json

@@ -0,0 +1,3 @@
+{
+  "urls": "Invalid"
+}

src/__test__/fixtures/error-invalid-files-paths-to-check/.html-w3c-validatorrc.json

@@ -0,0 +1,3 @@
+{
+  "files": ["./index.html"]
+}

src/__test__/fixtures/error-invalid-w3c-html/.html-w3c-validatorrc.json

@@ -0,0 +1,3 @@
+{
+  "files": ["./build/index.html", "./build/about.html"]
+}

src/__test__/fixtures/error-invalid-w3c-html/build/about.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>About</title>
+  </head>
+  <body></body>
+</html>

src/__test__/fixtures/error-invalid-w3c-html/build/index.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Home</title>
+  </head>
+  <body></body>
+</html>

src/__test__/fixtures/success/.html-w3c-validatorrc.json

@@ -0,0 +1,3 @@
+{
+  "files": ["./build/index.html", "./build/about.html"]
+}

src/__test__/fixtures/success/build/about.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>About</title>
+  </head>
+  <body></body>
+</html>

src/__test__/fixtures/success/build/index.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Home</title>
+  </head>
+  <body></body>
+</html>

src/utils/__test__/isExistingPath.test.ts

@@ -1,9 +1,11 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+
 import fsMock from 'mock-fs'
-import tap from 'tap'
 
 import { isExistingPath } from '../isExistingPath.js'
 
-await tap.test('utils/isExistingPath', async (t) => {
+await test('utils/isExistingPath', async (t) => {
   t.afterEach(() => {
     fsMock.restore()
   })
@@ -12,13 +14,13 @@ await tap.test('utils/isExistingPath', async (t) => {
     fsMock({
       '/file.txt': ''
     })
-    t.equal(await isExistingPath('/file.txt'), true)
+    assert.strictEqual(await isExistingPath('/file.txt'), true)
   })
 
   await t.test("should return false if the file doesn't exists", async () => {
     fsMock({
       '/file.txt': ''
     })
-    t.equal(await isExistingPath('/randomfile.txt'), false)
+    assert.strictEqual(await isExistingPath('/randomfile.txt'), false)
   })
 })

tsconfig.json

@@ -1,4 +1,5 @@
 {
+  "extends": "@tsconfig/strictest/tsconfig.json",
   "compilerOptions": {
     "target": "ESNext",
     "module": "ESNext",
@@ -7,8 +8,6 @@
     "outDir": "./build",
     "rootDir": "./src",
     "noEmit": true,
-    "strict": true,
-    "skipLibCheck": true,
-    "esModuleInterop": true
+    "exactOptionalPropertyTypes": false
   }
 }