eslint.config.mjs

import path from 'node:path'
import { fileURLToPath } from 'node:url'
import { fixupConfigRules, 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'

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: ['**/dist/', '!**/*.ts'],
    },
    ...fixupConfigRules(
        compat.extends(
            'prettier',
            'eslint:recommended',
            'plugin:import/recommended',
            'plugin:@typescript-eslint/recommended'
        )
    ),
    {
        plugins: {
            '@typescript-eslint': fixupPluginRules(typescriptEslint),
        },

        languageOptions: {
            parser: tsParser,
            ecmaVersion: 2022,
            sourceType: 'module',
        },

        settings: {
            'import/parsers': {
                '@typescript-eslint/parser': ['', '.ts'],
            },

            'import/resolver': {
                typescript: {
                    alwaysTryTypes: true,
                },
            },
        },

        rules: {
            'no-mixed-spaces-and-tabs': 'warn',
            'no-prototype-builtins': 'off',
            '@typescript-eslint/no-namespace': 'off',
            '@typescript-eslint/no-explicit-any': 'off',

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

            'import/order': [
                'error',
                {
                    groups: [
                        'builtin',
                        'external',
                        'internal',
                        'parent',
                        'sibling',
                        'index',
                        'object',
                        'type',
                    ],

                    'newlines-between': 'never',

                    alphabetize: {
                        order: 'asc',
                        caseInsensitive: true,
                    },
                },
            ],
        },
    },
]