eslint.config.js

// @ts-check
import { FlatCompat } from '@eslint/eslintrc'
import eslint from '@eslint/js'
import prettierConfig from 'eslint-config-prettier'
// plugins
import noOnlyTestsEslint from 'eslint-plugin-no-only-tests'
import regexpEslint from 'eslint-plugin-regexp'
import globals from 'globals'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import tseslint from 'typescript-eslint'

const typescriptEslint = tseslint.plugin

// parsers
const typescriptParser = tseslint.parser

const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)

// ref:
// https://eslint.org/docs/latest/use/configure/migration-guide#using-eslintrc-configs-in-flat-config
// mimic CommonJS variables -- not needed if using CommonJS
const compat = new FlatCompat({ baseDirectory: __dirname })

export default tseslint.config(
  eslint.configs.recommended,
  ...compat
    .extends('plugin:regexp/recommended'),
  ...tseslint.configs.recommendedTypeChecked,
  ...tseslint.configs.stylisticTypeChecked, prettierConfig, {
    languageOptions: {
      parser: typescriptParser,
      parserOptions: {
        project: ['./tsconfig.eslint.json'],
        tsconfigRootDir: __dirname
      },
      globals: globals.browser
    },
    plugins: {
      '@typescript-eslint': typescriptEslint,
      'no-only-tests': noOnlyTestsEslint,
      regexp: regexpEslint
    }
  },
  {
    ignores: [
      '**/*.d.*', '**/*.map.*', 'packages/**/*.min.js',
      'packages/**/dist/', 'packages/**/fixtures/',
      'packages/astro/vendor/vite/', 'benchmark/**/dist/',
      'examples/', 'scripts/', 'megalinter-reports/', '.github/',
      '.changeset/', '**/wwwroot/**/*.js',
      'eslint.config.js' // TODO: Remove an resolve the issues
    ]
  })