Delete merged and closed branches from github which don't have recent activity

github-clean.js

function deleteBefore(days) {
    var ONE_DAY = 1000 * 60 * 60 * 24;

    $('.branch-summary:not(.is-deleted)').each(function () {
        var $this = $(this);

        var datetime = new Date($this.find('time').attr('datetime')).getTime();
        var today = (new Date().getTime());
        var filter = today - (ONE_DAY * days);

        if (datetime < filter) {
            if ($this.find('.state').is('.state-merged, .state-closed')) {
                $this.find('button.branch-delete').click();
            }
        }
    });
}

Github removed jQuery from their site, this is the new version: https://github.com/donato/github-branch-cleaner