eslint.config.js

import js from '@eslint/js'
import globals from 'globals'
import reactHooks from 'eslint-plugin-react-hooks'
import reactRefresh from 'eslint-plugin-react-refresh'
import tseslint from 'typescript-eslint'
import { globalIgnores } from 'eslint/config'

export default tseslint.config([
  globalIgnores(['dist', 'node_modules', '.git', 'public']),
  {
    files: ['**/*.{ts,tsx}'],
    extends: [
      js.configs.recommended,
      tseslint.configs.recommended,
      tseslint.configs.stylistic,
      reactHooks.configs['recommended-latest'],
      reactRefresh.configs.vite,
    ],
    languageOptions: {
      ecmaVersion: 2022,
      globals: {
        ...globals.browser,
        ...globals.node,
      },
      parserOptions: {
        project: ['./tsconfig.app.json', './tsconfig.node.json'],
        ecmaFeatures: {
          jsx: true,
        },
      },
    },
    rules: {
      // Error prevention
      'no-console': ['warn', { allow: ['warn', 'error', 'info'] }],
      'no-debugger': 'warn',
      'no-alert': 'warn',
      'no-var': 'error',
      'prefer-const': 'error',
      'no-duplicate-imports': 'error',
      'no-unused-expressions': 'error',

      // TypeScript specific
      '@typescript-eslint/no-explicit-any': 'warn',
      '@typescript-eslint/explicit-function-return-type': ['warn', { allowExpressions: true }],
      '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
      '@typescript-eslint/no-non-null-assertion': 'warn',
      '@typescript-eslint/consistent-type-imports': 'error',
      '@typescript-eslint/no-floating-promises': 'error',
      '@typescript-eslint/await-thenable': 'error',
      '@typescript-eslint/no-misused-promises': 'error',

      // React specific
      'react-hooks/exhaustive-deps': 'warn',
      'react-refresh/only-export-components': ['warn', { allowConstantExport: true }],

      // Code style
      'no-multiple-empty-lines': ['error', { max: 1, maxEOF: 1 }],
      'eol-last': ['error', 'always'],
      'comma-dangle': ['error', 'always-multiline'],
      'arrow-parens': ['error', 'always'],
      'quotes': ['error', 'single', { avoidEscape: true }],
      'semi': ['error', 'always'],

      // Security
      'no-eval': 'error',
      'no-implied-eval': 'error',
      'no-new-func': 'error',
    },
  },
  {
    files: ['**/*.test.{ts,tsx}', '**/*.spec.{ts,tsx}', '**/tests/**/*.{ts,tsx}'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-non-null-assertion': 'off',
    },
  },
])