eslint.config.mjs

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'
import promise from 'eslint-plugin-promise'
import react from 'eslint-plugin-react'
import tsdoc from 'eslint-plugin-tsdoc'
import unusedImports from 'eslint-plugin-unused-imports'
import path from 'node:path'
import { fileURLToPath } from 'node:url'

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: ['**/.next', '**/.git', '**/node_modules', '**/public'],
  },
  ...fixupConfigRules(
    compat.extends(
      'next/core-web-vitals',
      'prettier',
      'turbo',
      'plugin:react/recommended',
      'eslint:recommended',
      'plugin:@typescript-eslint/recommended'
    )
  ),
  {
    plugins: {
      'unused-imports': unusedImports,
      '@typescript-eslint': fixupPluginRules(typescriptEslint),
      react: fixupPluginRules(react),
      tsdoc,
      promise,
    },

    languageOptions: {
      parser: tsParser,
    },

    settings: {
      react: {
        version: 'detect',
      },
    },

    rules: {
      'tsdoc/syntax': 'off',

      'no-restricted-imports': [
        'warn',
        {
          patterns: [
            {
              group: ['@mui/(?!material/styles/createTypography)\\w+/\\w+/\\w+'],
              message: 'Importing from subdirectories is restricted. Use top-level exports where available.',
            },
          ],

          paths: [
            {
              name: '@reduxjs/toolkit',
              message: 'Please do not use Redux Toolkit, migrate to zustand.',
            },
            {
              name: 'react-transition-group',
              message: 'Migrate to MUI or similar. This package is not well maintained.',
            },
          ],
        },
      ],
      '@typescript-eslint/no-unused-vars': 'off',
      '@typescript-eslint/ban-ts-comment': 'off',
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-require-imports': 'off',
      curly: 'error',
      'prefer-const': 'error',
      'no-else-return': 'error',
      'no-unneeded-ternary': 'error',
      'no-alert': 'error',
      'no-empty': 'error',
      'no-loss-of-precision': 'off',
      'no-extra-boolean-cast': 'off',
      'no-useless-catch': 'error',
      'require-await': 'error',
      'no-constant-binary-expression': 'off',
      'no-continue': 'error',
      'react/no-unescaped-entities': 'error',
      'promise/prefer-await-to-then': 'error',
      'react-hooks/exhaustive-deps': 'error',
      'no-console': 'error',
      'no-undef': 'off',
      'unused-imports/no-unused-imports': 'error',
      'no-magic-numbers': 'off',
      'react/react-in-jsx-scope': 'off',
      'react/no-direct-mutation-state': 'off',
      'react/prop-types': 'off',
    },
  },
]