eslint.config.js

import js from '@eslint/js'
import eslintConfigPrettier from 'eslint-config-prettier'
import importPlugin from 'eslint-plugin-import'
import reactHooksPlugin from 'eslint-plugin-react-hooks'
import reactRefreshPlugin from 'eslint-plugin-react-refresh'
import globals from 'globals'
import tseslint from 'typescript-eslint'

export default tseslint.config(
  {
    ignores: [
      '**/node_modules',
      'packages/*/dist',
      'packages/*/dev-dist',
      'packages/*/build',
      'packages/*/*.config.{js,ts}',
    ],
  },
  // common config
  {
    files: ['**/*.{ts,tsx,js,jsx}'],
    languageOptions: {
      sourceType: 'module',
      ecmaVersion: 2020,
      parser: tseslint.parser,
      parserOptions: {
        project: './tsconfig.base.json',
        tsconfigRootDir: import.meta.dirname,
      },
    },
    extends: [
      js.configs.recommended,
      // legacy config: extends: ['plugin:@typescript-eslint/recommended'],
      ...tseslint.configs.recommended,
      eslintConfigPrettier,
    ],
    plugins: {
      import: importPlugin,
    },
    rules: {
      '@typescript-eslint/no-explicit-any': 'warn',
    },
  },

  // client config
  {
    files: ['packages/client/**/*.{ts,tsx,js,jsx}'],
    languageOptions: {
      globals: globals.browser,
    },
    plugins: {
      'react-hooks': reactHooksPlugin,
      'react-refresh': reactRefreshPlugin,
    },
    rules: {
      ...reactHooksPlugin.configs.recommended.rules,
      '@typescript-eslint/no-empty-object-type': ['off'],
      'react-refresh/only-export-components': [
        'warn',
        { allowConstantExport: true },
      ],
    },
  },

  // server config
  {
    files: ['packages/server/**/*.{ts,js}'],
    languageOptions: {
      globals: { ...globals.node, ...globals.jest },
    },
    rules: {
      '@typescript-eslint/explicit-function-return-type': 'off',
      '@typescript-eslint/explicit-module-boundary-types': 'off',
    },
  },
)