eslint.config.mjs

import react from 'eslint-plugin-react';
import typescriptEslint from '@typescript-eslint/eslint-plugin';
import prettier from 'eslint-plugin-prettier';
import reactHooks from 'eslint-plugin-react-hooks';
import { fixupPluginRules } from '@eslint/compat';
import globals from 'globals';
import tsParser from '@typescript-eslint/parser';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import js from '@eslint/js';
import { FlatCompat } from '@eslint/eslintrc';

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 [
  ...compat.extends(
    'plugin:react/recommended',
    'airbnb',
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
    'plugin:@next/next/recommended',
  ),
  {
    plugins: {
      react,
      '@typescript-eslint': typescriptEslint,
      prettier,
      'react-hooks': fixupPluginRules(reactHooks),
    },

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

      parser: tsParser,
      ecmaVersion: 12,
      sourceType: 'module',

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

    settings: {
      'import/resolver': {
        typescript: {},
      },
    },

    rules: {
      'prettier/prettier': 'error',
      'react-hooks/rules-of-hooks': 'error',
      'react-hooks/exhaustive-deps': 'warn',

      'react/jsx-filename-extension': [
        1,
        {
          extensions: ['.tsx'],
        },
      ],

      'import/prefer-default-export': 'off',
      'react/jsx-one-expression-per-line': 'off',
      'react/jsx-props-no-spreading': 'off',
      'no-unused-expressions': 'off',
      'react/prop-types': 'off',
      'import/no-duplicates': 'off',
      'no-use-before-define': 'off',
      '@typescript-eslint/no-use-before-define': ['error'],
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/explicit-function-return-type': [
        'error',
        {
          allowExpressions: true,
        },
      ],

      '@typescript-eslint/camelcase': 'off',

      'import/extensions': [
        'error',
        'ignorePackages',
        {
          ts: 'never',
          tsx: 'never',
        },
      ],

      'react/function-component-definition': 'off',
      'react/react-in-jsx-scope': 'off',
      'react/require-default-props': 'off',
    },
  },
];