eslint.config.mjs

import typescriptEslint from '@typescript-eslint/eslint-plugin';
import tsParser from '@typescript-eslint/parser';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import js from '@eslint/js';
import { FlatCompat } from '@eslint/eslintrc';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const compat = new FlatCompat({
  baseDirectory: __dirname,
  recommendedConfig: js.configs.recommended,
  allConfig: js.configs.all
});

export default [
  {
    ignores: ['node_modules', 'dist', 'coverage', '**/*.d.ts', '.venv', 'lib']
  },
  ...compat
    .extends(
      'eslint:recommended',
      'plugin:@typescript-eslint/eslint-recommended',
      'plugin:@typescript-eslint/recommended',
      'plugin:prettier/recommended'
    )
    .map(config => ({
      ...config,
      files: ['**/*.ts', '**/*.tsx']
    })),
  {
    files: ['**/*.ts', '**/*.tsx'],
    plugins: {
      '@typescript-eslint': typescriptEslint
    },

    languageOptions: {
      parser: tsParser,
      ecmaVersion: 5,
      sourceType: 'module',

      parserOptions: {
        project: 'tsconfig.json'
      }
    },

    rules: {
      '@typescript-eslint/naming-convention': [
        'error',
        {
          selector: 'interface',
          format: ['PascalCase'],

          custom: {
            regex: '^I[A-Z]',
            match: true
          }
        }
      ],

      '@typescript-eslint/no-unused-vars': [
        'warn',
        {
          args: 'none'
        }
      ],

      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-namespace': 'off',
      '@typescript-eslint/no-use-before-define': 'off',

      curly: ['error', 'all'],
      eqeqeq: 'error',
      'prefer-arrow-callback': 'error'
    }
  }
];