w node.js z ekspresem, jak usunąć ciąg zapytania

import Tour from '../model/TourModel.js' 

function getAllTours= async(req,res)=> {
    //we cann't directly in variable cause it will refrence and not copy and delete of that variable delete that object
    const queryObj = { ...this.queryString };
    const excludedFields = ['page', 'sort', 'limit', 'fields'];
    //we use forEach cause we don't want to return the  array
    //
    excludedFields.forEach(el => delete queryObj[el]);
   const tours= await Tour.find({queryObj});
 }
 
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