claude-hub/eslint.config.js

const js = require('@eslint/js');
const tseslint = require('@typescript-eslint/eslint-plugin');
const tsparser = require('@typescript-eslint/parser');

module.exports = [
  js.configs.recommended,
  {
    languageOptions: {
      ecmaVersion: 'latest',
      sourceType: 'commonjs',
      globals: {
        console: 'readonly',
        process: 'readonly',
        Buffer: 'readonly',
        __dirname: 'readonly',
        __filename: 'readonly',
        module: 'readonly',
        require: 'readonly',
        exports: 'readonly',
        global: 'readonly',
        setImmediate: 'readonly',
        clearImmediate: 'readonly',
        setTimeout: 'readonly',
        clearTimeout: 'readonly',
        setInterval: 'readonly',
        clearInterval: 'readonly',
        fetch: 'readonly',
        URL: 'readonly'
      }
    },
    rules: {
      // Error prevention
      'no-unused-vars': ['error', { 'argsIgnorePattern': '^_', 'varsIgnorePattern': '^_', 'caughtErrorsIgnorePattern': '^_' }],
      'no-console': 'warn',
      'no-debugger': 'error',
      
      // Code style
      'indent': ['error', 2],
      'quotes': ['error', 'single'],
      'semi': ['error', 'always'],
      'comma-dangle': ['error', 'never'],
      
      // Best practices
      'eqeqeq': 'error',
      'no-eval': 'error',
      'no-implied-eval': 'error',
      'no-new-func': 'error',
      'no-return-assign': 'error',
      'no-self-compare': 'error',
      'no-sequences': 'error',
      'no-throw-literal': 'error',
      'no-unmodified-loop-condition': 'error',
      'no-unused-expressions': 'error',
      'no-useless-call': 'error',
      'no-useless-concat': 'error',
      'no-useless-return': 'error',
      'no-void': 'error',
      'radix': 'error',
      'wrap-iife': 'error',
      'yoda': 'error',
      
      // Node.js specific
      'no-process-exit': 'error',
      'no-sync': 'warn',
      
      // Security
      'no-buffer-constructor': 'error'
    }
  },
  // TypeScript files configuration
  {
    files: ['**/*.ts', '**/*.tsx'],
    languageOptions: {
      parser: tsparser,
      parserOptions: {
        ecmaVersion: 'latest',
        sourceType: 'commonjs',
        project: './tsconfig.json'
      }
    },
    plugins: {
      '@typescript-eslint': tseslint
    },
    rules: {
      // Disable base rules that are covered by TypeScript equivalents
      'no-unused-vars': 'off',
      '@typescript-eslint/no-unused-vars': ['error', { 'argsIgnorePattern': '^_', 'varsIgnorePattern': '^_', 'caughtErrorsIgnorePattern': '^_' }],
      
      // TypeScript specific rules
      '@typescript-eslint/no-explicit-any': 'warn',
      '@typescript-eslint/no-non-null-assertion': 'warn',
      '@typescript-eslint/prefer-nullish-coalescing': 'error',
      '@typescript-eslint/prefer-optional-chain': 'error',
      '@typescript-eslint/no-unnecessary-type-assertion': 'error',
      '@typescript-eslint/no-floating-promises': 'error',
      '@typescript-eslint/await-thenable': 'error',
      '@typescript-eslint/no-misused-promises': 'error',
      '@typescript-eslint/require-await': 'error',
      '@typescript-eslint/prefer-as-const': 'error',
      '@typescript-eslint/no-inferrable-types': 'error',
      '@typescript-eslint/no-unnecessary-condition': 'warn',
      
      // Style rules
      '@typescript-eslint/consistent-type-definitions': ['error', 'interface'],
      '@typescript-eslint/consistent-type-imports': ['error', { prefer: 'type-imports' }]
    }
  },
  // Test files (JavaScript and TypeScript)
  {
    files: ['test/**/*.js', '**/*.test.js', 'test/**/*.ts', '**/*.test.ts'],
    languageOptions: {
      parser: tsparser,
      parserOptions: {
        ecmaVersion: 'latest',
        sourceType: 'commonjs',
        project: './tsconfig.test.json'
      },
      globals: {
        jest: 'readonly',
        describe: 'readonly',
        test: 'readonly',
        it: 'readonly',
        expect: 'readonly',
        beforeEach: 'readonly',
        afterEach: 'readonly',
        beforeAll: 'readonly',
        afterAll: 'readonly'
      }
    },
    rules: {
      'no-console': 'off',
      '@typescript-eslint/no-explicit-any': 'off' // Allow any in tests for mocking
    }
  }
];