ESLint Configuration

// eslint.config.js
import js from '@eslint/js';
import typescript from '@typescript-eslint/eslint-plugin';
import typescriptParser from '@typescript-eslint/parser';
import react from 'eslint-plugin-react';
import reactHooks from 'eslint-plugin-react-hooks';
import importPlugin from 'eslint-plugin-import';
 
export default [
  js.configs.recommended,
  {
    files: ['**/*.{ts,tsx}'],
    languageOptions: {
      parser: typescriptParser,
      parserOptions: {
        ecmaVersion: 'latest',
        sourceType: 'module',
        ecmaFeatures: { jsx: true },
      },
    },
    plugins: {
      '@typescript-eslint': typescript,
      react,
      'react-hooks': reactHooks,
      import: importPlugin,
    },
    rules: {
      // TypeScript
      '@typescript-eslint/no-unused-vars': [
        'error',
        { argsIgnorePattern: '^_' },
      ],
      '@typescript-eslint/no-explicit-any': 'error',
      '@typescript-eslint/consistent-type-imports': [
        'error',
        { prefer: 'type-imports' },
      ],
      '@typescript-eslint/no-non-null-assertion': 'warn',
 
      // React
      'react/jsx-no-useless-fragment': 'error',
      'react/self-closing-comp': 'error',
      'react/jsx-curly-brace-presence': [
        'error',
        { props: 'never', children: 'never' },
      ],
      'react/jsx-boolean-value': ['error', 'never'],
 
      // React Hooks
      'react-hooks/rules-of-hooks': 'error',
      'react-hooks/exhaustive-deps': 'warn',
 
      // Imports
      'import/order': [
        'error',
        {
          groups: [
            'builtin',
            'external',
            'internal',
            'parent',
            'sibling',
            'index',
          ],
          'newlines-between': 'always',
          alphabetize: { order: 'asc' },
        },
      ],
      'import/no-duplicates': 'error',
 
      // General
      'no-console': ['warn', { allow: ['warn', 'error'] }],
      'prefer-const': 'error',
      'no-var': 'error',
    },
    settings: {
      react: { version: 'detect' },
    },
  },
];

{
  "scripts": {
    "lint": "eslint src --ext .ts,.tsx",
    "lint:fix": "eslint src --ext .ts,.tsx --fix"
  }
}

// .vscode/settings.json
{
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": "explicit"
  },
  "eslint.validate": [
    "javascript",
    "javascriptreact",
    "typescript",
    "typescriptreact"
  ]
}

// .eslintignore
node_modules/
dist/
build/
coverage/
*.config.js
*.config.ts

// package.json
{
  "lint-staged": {
    "*.{ts,tsx}": [
      "eslint --fix",
      "prettier --write"
    ]
  }
}