eslint.config.js

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

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: ['**/dist/'],
  },
  ...fixupConfigRules(
    compat.extends(
      'prettier',
      'eslint:recommended',
      'plugin:import/recommended',
      'plugin:compat/recommended',
      'plugin:@typescript-eslint/recommended'
    )
  ),
  {
    plugins: {
      '@typescript-eslint': fixupPluginRules(typescriptEslint),
    },

    languageOptions: {
      parser: tsParser,
      ecmaVersion: 2022,
      sourceType: 'module',
    },

    settings: {
      'import/parsers': {
        '@typescript-eslint/parser': ['', '.ts'],
      },

      'import/resolver': {
        typescript: {
          alwaysTryTypes: true,
        },
      },
    },

    rules: {
      'no-mixed-spaces-and-tabs': 'warn',
      'no-prototype-builtins': 'off',
      '@typescript-eslint/no-namespace': 'off',
      '@typescript-eslint/no-explicit-any': 'off',

      '@typescript-eslint/no-unused-vars': [
        'error',
        {
          argsIgnorePattern: '^_',
          varsIgnorePattern: '^_',
          caughtErrorsIgnorePattern: '^_',
        },
      ],

      'import/order': [
        'error',
        {
          groups: [
            'builtin',
            'external',
            'internal',
            'parent',
            'sibling',
            'index',
            'object',
            'type',
          ],

          'newlines-between': 'never',

          alphabetize: {
            order: 'asc',
            caseInsensitive: true,
          },
        },
      ],
    },
  },
]