TurnorderSort.js

// Fire when the turnorder is changed.
on('change:campaign:turnorder', (obj, prev) => {
    // Check if the turnorder is changed, otherwise cancel
    if(obj.get('turnorder') === prev.turnorder) return;
   
    // Parse the turnorder to an object, and sort it Ascending.
    let turnorder = JSON.parse(obj.get('turnorder')).sort((a,b) => { return a.pr - b.pr });
   
    // Set the new turnorder order.
    obj.set('turnorder', JSON.stringify(turnorder));
});