eslint.config.ts

import eslint from '@eslint/js';
import { defineConfig } from 'eslint/config';
import tseslint from 'typescript-eslint';

export default defineConfig(
  // Apply to all TypeScript and JavaScript files
  {
    files: ['**/*.ts', '**/*.tsx', '**/*.js', '**/*.mjs', '**/*.cjs'],
  },

  // Ignore patterns
  {
    ignores: [
      '**/node_modules/**',
      '**/dist/**',
      '**/build/**',
      '**/.git/**',
      '**/coverage/**',
      '**/*.min.js',
      '**/playwright-report/**',
      '**/test-results/**',
    ],
  },

  // Base ESLint recommended rules
  eslint.configs.recommended,

  // TypeScript ESLint recommended rules with type checking
  ...tseslint.configs.recommendedTypeChecked,

  // TypeScript specific configuration
  {
    languageOptions: {
      parserOptions: {
        projectService: {
          allowDefaultProject: ['*.js', '*.mjs', '*.cjs'],
          defaultProject: './tsconfig.json',
        },
        tsconfigRootDir: import.meta.dirname,
      },
    },
  },

  // Rules for JavaScript files (without type checking)
  {
    files: ['**/*.js', '**/*.mjs', '**/*.cjs'],
    ...tseslint.configs.disableTypeChecked,
  },

  // Custom TypeScript rule overrides
  {
    rules: {
      '@typescript-eslint/explicit-function-return-type': 'off',
      '@typescript-eslint/strict-boolean-expressions': 'off',
      '@typescript-eslint/restrict-template-expressions': 'off',
      '@typescript-eslint/method-signature-style': 'off',
      '@typescript-eslint/no-unsafe-assignment': 'off',
      '@typescript-eslint/no-unsafe-call': 'off',
      '@typescript-eslint/no-unsafe-argument': 'off',
      '@typescript-eslint/no-unsafe-member-access': 'off',
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/require-await': 'off',
      // allow unused variables if they start with _
      '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
      'no-undef': 'off',
    },
  },
);