eslint.config.js

import tseslint from '@typescript-eslint/eslint-plugin';
import tsparser from '@typescript-eslint/parser';
import prettier from 'eslint-config-prettier';

export default [
  {
    ignores: [
      'dist/**',
      'node_modules/**',
      'coverage/**',
      '*.js',
      'examples/**',
      'scripts/**',
      'extension/**',
    ],
  },
  // Base config for all TypeScript files
  {
    files: ['src/**/*.ts'],
    languageOptions: {
      parser: tsparser,
      parserOptions: {
        ecmaVersion: 2022,
        sourceType: 'module',
        project: './tsconfig.json',
      },
    },
    plugins: {
      '@typescript-eslint': tseslint,
    },
    rules: {
      ...tseslint.configs.recommended.rules,
      '@typescript-eslint/no-unused-vars': [
        'error',
        { argsIgnorePattern: '^_' },
      ],
      '@typescript-eslint/no-explicit-any': 'warn',
      '@typescript-eslint/explicit-function-return-type': 'off',
      '@typescript-eslint/no-floating-promises': 'error',
      'no-console': ['warn', { allow: ['warn', 'error', 'log'] }],
      'prefer-const': 'error',
      'no-var': 'error',
    },
  },
  // Specific rules for test files
  {
    files: ['src/**/*.test.ts', 'src/test*.ts'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off', // Allow 'any' in tests
      'no-console': 'off', // Allow console in tests
    },
  },
  // Specific rules for type definition files
  {
    files: ['src/**/types.ts'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off', // Allow 'any' in type definitions (external APIs)
    },
  },
  // Specific rules for MCP server handlers
  {
    files: ['src/mcp/server.ts'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off', // MCP SDK uses 'any' in tool handlers
    },
  },
  // Specific rules for API client files
  {
    files: ['src/pricing/*.ts', 'src/calculator/*.ts'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'warn', // Warn but don't block for API responses
    },
  },
  prettier,
];