Sidheeqpallam

const objectToCsv = function(data){
  const csvRows =[];
  //get the headers 
  const headers = Object.keys(data[0]);
  csvRows.push(headers.join(','));

  //loop over the rows

  for (const row of data){
    const values =  headers.map(header =>{

Sidheeqpallam

const download = function(data){
  const blob = new Blob([data], {type : 'text/csv'});
  const url = window.URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.setAttribute('hidden', '');
  a.setAttribute('href', url);
  a.setAttribute('download', 'download.csv');
  document.body.appendChild(a);
  a.click();

Sidheeqpallam

db.getCollection('tests').aggregate([
    {$match: {typet:'Req'}},
    {$set: {incharge: {$toObjectId: "$incharge"} }}, // keep the whole document structure, but replace `incharge` into ObjectId
    {$lookup:{
            from: "users",
            localField: "incharge", //this is the _id user from tests
            foreignField: "_id", //this is the _id from users
            as: "user"
    }}
])

Sidheeqpallam

isEqual = (a, b, options)=>{
              if(a == b){
                return options.fn(this)
              }
              return options.inverse(this)
            }