fastadmin_tailored/addons/previewfile/bootstrap.js

require.config({
    paths: {
        'previewfile': '../addons/previewfile/previewfile',
    },
    shim: {
        'previewfile': {
            deps: ['bootstrap-table']
        },
    }
});
if ($("table.table").size() > 0) {
    require(['previewfile', 'table'], function (Previewfile, Table) {

    });
}