eslint.config.js

import js from '@eslint/js';
import globals from 'globals';
import react from 'eslint-plugin-react';
import reactHooks from 'eslint-plugin-react-hooks';
import reactRefresh from 'eslint-plugin-react-refresh';

export default [
  // Ignore build output
  { ignores: ['dist/**', 'build/**'] },

  // Base configuration for all files
  {
    files: ['**/*.{js,jsx}'],
    linterOptions: {
      reportUnusedDisableDirectives: true,
    },
    languageOptions: {
      ecmaVersion: 2024,
      sourceType: 'module',
      globals: {
        ...globals.browser,
        ...globals.node,
      },
      parserOptions: {
        ecmaFeatures: {
          jsx: true,
        },
      },
    },
    plugins: {
      react: react,
      'react-hooks': reactHooks,
      'react-refresh': reactRefresh,
    },
    rules: {
      // JavaScript recommended rules
      ...js.configs.recommended.rules,

      // React recommended rules
      'react/jsx-uses-react': 'off', // Not needed in React 17+
      'react/react-in-jsx-scope': 'off', // Not needed in React 17+
      'react/prop-types': 'warn',
      'react/jsx-no-duplicate-props': 'error',
      'react/jsx-no-undef': 'error',
      'react/jsx-pascal-case': 'error',
      'react/no-direct-mutation-state': 'error',
      'react/no-unused-state': 'warn',

      // React Hooks rules
      ...reactHooks.configs.recommended.rules,

      // React Refresh rules
      'react-refresh/only-export-components': [
        'warn',
        { allowConstantExport: true },
      ],

      // General best practices
      'no-console': ['warn', { allow: ['warn', 'error'] }],
      'no-unused-vars': [
        'warn',
        {
          argsIgnorePattern: '^_',
          varsIgnorePattern: '^_',
        },
      ],
      eqeqeq: 'error',
      'no-var': 'error',
      'prefer-const': 'warn',
      'no-multiple-empty-lines': ['warn', { max: 1 }],
      'no-trailing-spaces': 'warn',
    },
    settings: {
      react: {
        version: 'detect',
      },
    },
  },
];