$(".class").select2({
    templateResult: formatState,
    templateSelection: formatState
});

function formatState (opt) {
    if (!opt.id) {
        return opt.text.toUpperCase();
    } 

    var optimage = $(opt.element).attr('data-image'); 
    console.log(optimage)
    if(!optimage){
       return opt.text.toUpperCase();
    } else {                    
        var $opt = $(
           ' ' + opt.text.toUpperCase() + ''
        );
        return $opt;
    }
};