@networkpro/blog/eslint.config.mjs

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/* ==========================================================================
eslint.config.mjs

Copyright © 2025 Network Pro Strategies (Network Pro™)
SPDX-License-Identifier: CC-BY-4.0 OR GPL-3.0-or-later
This file is part of Network Pro.
========================================================================== */

import js from '@eslint/js'; // Provides ESLint core rules and recommended config
import json from '@eslint/json';
import eslintConfigPrettier from 'eslint-config-prettier'; // Prettier config to disable conflicting ESLint rules
import { defineConfig } from 'eslint/config';
import globals from 'globals';

const GLOBALS = {
  ...globals.browser,
  ...globals.node,
  self: 'readonly',
  location: 'readonly',
  indexedDB: 'readonly',
};

// Define general ESLint rules (non-Svelte-specific)
const ESLINT_RULES = {
  indent: 'off', // Turn off the 'indent' rule, managed by Prettier
  quotes: 'off', // Turn off the 'quotes' rule, managed by Prettier
  semi: 'off', // Turn off the 'semi' rule, managed by Prettier
};

export default defineConfig([
  // Global ignores
  {
    ignores: [
      '.*', // Hidden files
      '*.xml', // XML files
      '**/.cache/**', // Cache directories
      '**/.vscode/**', // VSCode-specific files
      '**/coverage/**', // Coverage reports
      '**/build/**', // Distribution files
      'package.json', // NPM package manifest
      'package-lock.json', // NPM lockfile
      'node_modules/', // Node.js dependencies
      '.vite/', // Vite-specific cache directory
      '*.lock', // Lock files
    ],
  },

  // JavaScript/Node.js configuration
  {
    files: ['**/*.{mjs,js}'],
    plugins: { js },
    languageOptions: {
      globals: GLOBALS,
      ecmaVersion: 'latest', // Use the latest ECMAScript version
      sourceType: 'module',
    },
    extends: ['js/recommended'],
    rules: {
      ...js.configs.recommended.rules, // ESLint's core recommended rules (scoped)
      ...eslintConfigPrettier.rules, // Prettier config to disable conflicting ESLint rules (scoped)
      ...ESLINT_RULES, // Additional custom rules
      'no-unused-vars': ['error', { argsIgnorePattern: '^_' }], // Ignore unused variables starting with an underscore
    },
  },

  // JSON configuration
  {
    files: ['**/*.json'],
    plugins: { json },
    language: 'json/json',
    extends: ['json/recommended'],
  },

  // JSONC configuration
  {
    files: ['**/*.jsonc'],
    plugins: { json },
    language: 'json/jsonc',
    extends: ['json/recommended'],
  },
]);