Laravel social media url macro

macro.php

<?php

URL::macro('social', function ($name, $replacement = '#') {
    return array_get([
        'facebook' => 'https://www.facebook.com/mypage/',
        'instagram' => 'https://www.instagram.com/mypage/',
        'pinterest' => 'https://nl.pinterest.com/mypage/',
    ], $name), $replacement);
});

URL::social('facebook') // https://www.facebook.com/mypage/
URL::social('instagram') // https://www.instagram.com/mypage/
URL::social('unknown-social') // #
URL::social('unknown-social', '/contact') // /contact