monorepo/packages/eslint-config/next.mjs

import antfu from '@antfu/eslint-config'
import nextPlugin from '@next/eslint-plugin-next'
import eslintConfigPrettier from 'eslint-config-prettier'
import jsxA11y from 'eslint-plugin-jsx-a11y'
import perfectionist from 'eslint-plugin-perfectionist'
import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended'
import unusedImports from 'eslint-plugin-unused-imports'

const config = antfu(
  {
    isInEditor: true,
    react: true,
    typescript: true,
    stylistic: false,
    markdown: false,
    toml: false,
    ignores: [
      'public',
      'node_modules',
      'build',
      '.history',
      '.next',
      'public',
      'pnpm-lock.yaml',
      'package-lock.json',
      'next-env.d.ts',
    ],
  },
  {
    files: ['**/*.{ts,tsx,js,jsx}'],
    languageOptions: {
      ecmaVersion: 'latest',
    },
    rules: {
      'no-console': 'off',
      'no-unused-vars': 'off',
      '@typescript-eslint/no-unused-vars': 'off',
      'ts/no-use-before-define': 'off',
      'ts/strict-boolean-expressions': 'off',
      'ts/no-unsafe-member-access': 'off',
      'ts/no-unsafe-call': 'off',
      'ts/no-unsafe-assignment': 'off',
      'ts/no-unsafe-return': 'off',
      'ts/no-unsafe-argument': 'off',
      'ts/no-misused-promises': 'off',
      'ts/no-floating-promises': 'off',
      'node/prefer-global/process': 'off',
      'node/prefer-global/buffer': 'off',
      'import/no-named-default': 'off',
    },
  },
  jsxA11y.flatConfigs.recommended,
  {
    plugins: {
      '@next/next': nextPlugin,
    },
    rules: {
      ...nextPlugin.configs.recommended.rules,
      ...nextPlugin.configs['core-web-vitals'].rules,
    },
  },
  {
    name: 'perfectionist',
    rules: {
      'import/order': 'off',
      'sort-imports': 'off',
      'perfectionist/sort-imports':
        perfectionist.configs['recommended-natural'].rules[
          'perfectionist/sort-imports'
        ],
      'perfectionist/sort-exports':
        perfectionist.configs['recommended-natural'].rules[
          'perfectionist/sort-exports'
        ],
      'perfectionist/sort-named-imports':
        perfectionist.configs['recommended-natural'].rules[
          'perfectionist/sort-named-imports'
        ],
      'perfectionist/sort-named-exports':
        perfectionist.configs['recommended-natural'].rules[
          'perfectionist/sort-named-exports'
        ],
    },
  },

  {
    plugins: {
      'unused-imports': unusedImports,
    },
    rules: {
      'unused-imports/no-unused-imports': 'error',
      'unused-imports/no-unused-vars': [
        'warn',
        {
          vars: 'all',
          varsIgnorePattern: '^_',
          args: 'after-used',
          argsIgnorePattern: '^_',
        },
      ],
    },
  },

  eslintConfigPrettier,
  eslintPluginPrettierRecommended,
)
export default config