delete.js

  let c1 = data.findIndex( t => Object.keys(t)[0] == d.type);
     if(c1 > -1){
          if(data[c1][d.type].length >1){
              const index = data[c1][d.type].indexOf(d.title); 
              if (index > -1) {
                        data[c1][d.type].splice(index, 1);
                }
          }
          else{
             const index = data[c1][d.type].indexOf(d.title); 
              if (index > -1) {
                        data.splice(c1,1)
                }
               

          }
     }