eslint.config.mjs

import { 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 _import from 'eslint-plugin-import';
import jsxA11Y from 'eslint-plugin-jsx-a11y';
import globals from 'globals';
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: [
      '**/build/',
      '**/dist/',
      '**/node_modules',
      '**/.snapshots/',
      '**/*.min.js',
      '**/storybook-static',
    ],
  },
  ...compat.extends(
    'eslint:recommended',
    'prettier',
    'plugin:@typescript-eslint/recommended',
  ),
  {
    plugins: {
      import: fixupPluginRules(_import),
      'jsx-a11y': jsxA11Y,
      '@typescript-eslint': typescriptEslint,
    },

    languageOptions: {
      globals: {
        ...globals.node,
        ...globals.browser,
      },

      parser: tsParser,
      ecmaVersion: 'latest',
      sourceType: 'module',

      parserOptions: {
        ecmaFeatures: {
          legacyDecorators: true,
          jsx: true,
        },
      },
    },

    settings: {
      react: {
        version: '18',
      },
    },

    rules: {
      'space-before-function-paren': 'off',
      'react/prop-types': 'off',
      'react/jsx-handler-names': 'off',
      'react/jsx-fragments': 'off',
      'react/no-unused-prop-types': 'off',
      'import/export': 'off',
      'no-unused-vars': 'off',

      '@typescript-eslint/no-unused-vars': [
        'error',
        {
          argsIgnorePattern: '^_',
          varsIgnorePattern: '^_',
          caughtErrorsIgnorePattern: '^_',
        },
      ],

      '@typescript-eslint/explicit-function-return-type': 'off',
      'no-use-before-define': 'off',
    },
  },
  {
    files: ['**/*.ts', '**/*.tsx'],

    rules: {
      '@typescript-eslint/explicit-function-return-type': [
        'error',
        {
          allowExpressions: true,
          allowTypedFunctionExpressions: true,
        },
      ],
    },
  },
];