[Vuejs]-Element UI +vueJs, how to change the table sorting caret icon

It seems to me that you can’t change it, looking at the interface you can see that it receives four parameters, but the documentation indicates two.

Documentation

:default-sort="{ prop: 'date', order: 'descending' }"

Interface

interface Sort {
    prop: string;
    order: 'ascending' | 'descending';
    init?: any;
    silent?: any;
}

if you manage to do it, I’m interested in knowing how you did it.