willy.club/routes/start.php

<?php

use WillySoft\Http\ErrorHandler;
use WillySoft\Http\Route;

ErrorHandler::register(function($error_messages) {
    view('errors/500', ['error_messages' => $error_messages]);
});

Route::get('/', fn() => view('pages/home'));

Route::group(function() {
    require __DIR__ . '/willychat.php';
});

Route::get('/test/$whatever?', function($whatever = 'Default Value') {
    echo htmlspecialchars($whatever);
});

Route::get('/error', fn() => 1 / 0);

// since no route was matched we show a page not found error
http_response_code(404);
view('errors/404');