eslint.config.mjs

import eslint from '@eslint/js'
import tsParser from '@typescript-eslint/parser'
import eslintPluginUnicorn from 'eslint-plugin-unicorn'
import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended'
import eslintPluginReact from 'eslint-plugin-react'
import eslintPluginReactHooks from 'eslint-plugin-react-hooks'
import eslintPluginUnusedImports from 'eslint-plugin-unused-imports'
import globals from 'globals'
import typescriptEslint from 'typescript-eslint'

export default typescriptEslint.config(
  { ignores: ['**/*.d.ts', '**/coverage', '**/dist', 'eslint.config.mjs'] },
  {
    extends: [
      eslint.configs.recommended,
      ...typescriptEslint.configs.recommended,
      eslintPluginUnicorn.configs.recommended,
      eslintPluginReact.configs.flat.recommended,
      eslintPluginReact.configs.flat['jsx-runtime'],
    ],
    plugins: {
      'react-hooks': eslintPluginReactHooks,
      'unused-imports': eslintPluginUnusedImports,
    },
    files: ['packages/**/src/**/*.{js,ts,tsx}'],
    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.node,
      },
      parser: tsParser,
      ecmaVersion: 'latest',
      sourceType: 'module',
      parserOptions: {
        ecmaFeatures: {
          jsx: true,
        },
      },
    },
    settings: {
      react: {
        pragma: 'React',
        version: 'detect',
      },
    },
    rules: {
      ...eslintPluginReactHooks.configs.recommended.rules,
      // react-hooks@7 promoted the react-compiler rules into recommended; treat the
      // newly-introduced ones as warnings so they don't fail CI on working components
      'react-hooks/refs': 'warn',
      'react-hooks/set-state-in-effect': 'warn',
      'react-hooks/static-components': 'warn',
      '@typescript-eslint/no-unused-expressions': [
        'error',
        { allowShortCircuit: true, allowTernary: true },
      ],
      '@typescript-eslint/no-unused-vars': 'off',
      'unused-imports/no-unused-imports': 'error',
      'unused-imports/no-unused-vars': [
        'error',
        { vars: 'all', varsIgnorePattern: '^_', args: 'after-used', argsIgnorePattern: '^_' },
      ],
      'no-console': 'off',
      'no-debugger': 'off',
      // the library compiles with the classic JSX transform (tsconfig "jsx": "react"),
      // so the React import is required and must count as used
      'react/jsx-uses-react': 'error',
      'unicorn/filename-case': 'off',
      'unicorn/no-array-for-each': 'off',
      'unicorn/no-null': 'off',
      'unicorn/no-useless-undefined': 'off',
      'unicorn/prefer-at': 'off',
      'unicorn/prefer-dom-node-append': 'off',
      'unicorn/prefer-export-from': 'off',
      'unicorn/prefer-global-this': 'off',
      'unicorn/prefer-query-selector': 'off',
      'unicorn/prefer-spread': 'off',
      'unicorn/prevent-abbreviations': 'off',
      'vue/require-default-prop': 'off',
    },
  },
  {
    files: ['**/*.mjs'],
    languageOptions: {
      globals: {
        ...Object.fromEntries(Object.entries(globals.browser).map(([key]) => [key, 'off'])),
        ...globals.node,
      },

      ecmaVersion: 5,
      sourceType: 'module',
    },
  },
  {
    files: ['**/__tests__/*.{j,t}s?(x)', '**/tests/unit/**/*.spec.{j,t}s?(x)'],
    languageOptions: {
      globals: {
        ...globals.jest,
      },
    },
  },
  {
    files: ['packages/docs/build/**'],
    languageOptions: {
      globals: {
        ...Object.fromEntries(Object.entries(globals.browser).map(([key]) => [key, 'off'])),
        ...globals.node,
      },

      ecmaVersion: 5,
      sourceType: 'commonjs',
    },
    rules: {
      '@typescript-eslint/no-var-requires': 'off',
      'no-console': 'off',
      'unicorn/prefer-module': 'off',
      'unicorn/prefer-top-level-await': 'off',
    },
  },
  {
    files: ['packages/docs/**'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-var-requires': 'off',
      'react/no-unescaped-entities': 'off',
      'react-hooks/refs': 'off',
      'react-hooks/set-state-in-effect': 'off',
      'unicorn/consistent-function-scoping': 'off',
      'unicorn/prefer-module': 'off',
    },
  },
  eslintPluginPrettierRecommended
)