eslint.config.mjs

import ts from '@typescript-eslint/eslint-plugin';
import tsParser from '@typescript-eslint/parser';

export default [
  {
    name: 'echo-server/ts-base',
    files: ['**/*.{ts,tsx}'],
    languageOptions: {
      parser: tsParser,
      parserOptions: {
        ecmaVersion: 'latest',
        sourceType: 'module',
        project: true,
        tsconfigRootDir: __dirname,
      },
      globals: {
        console: 'readonly',
        process: 'readonly',
        __dirname: 'readonly',
        __filename: 'readonly',
        require: 'readonly',
        module: 'readonly',
        exports: 'readonly',
        global: 'readonly',
        Buffer: 'readonly',
        setTimeout: 'readonly',
        clearTimeout: 'readonly',
        setInterval: 'readonly',
        clearInterval: 'readonly',
        fetch: 'readonly',
      },
    },
    plugins: {
      '@typescript-eslint': ts,
    },
    rules: {
      '@typescript-eslint/no-unused-vars': 'error',
      '@typescript-eslint/no-explicit-any': 'warn',
      'no-debugger': 'error',
      'no-var': 'error',
      'prefer-const': 'error',
    },
  },
  {
    name: 'echo-server/tests',
    files: [
      '**/__tests__/**/*.{ts,tsx}',
      '**/*.test.{ts,tsx}',
      '**/*.spec.{ts,tsx}',
    ],
    languageOptions: {
      globals: {
        jest: 'readonly',
        describe: 'readonly',
        it: 'readonly',
        test: 'readonly',
        expect: 'readonly',
        beforeAll: 'readonly',
        afterAll: 'readonly',
        beforeEach: 'readonly',
        afterEach: 'readonly',
        console: 'readonly',
        process: 'readonly',
        global: 'readonly',
        require: 'readonly',
        setTimeout: 'readonly',
        TextEncoder: 'readonly',
        TextDecoder: 'readonly',
      },
    },
  },
  {
    name: 'echo-server/ignores',
    ignores: ['node_modules/', 'dist/', 'build/', 'coverage/', '**/*.d.ts'],
  },
];