gistfile1.txt

response = {}
someAsyncCall().then(function(rows){
  _.forEach(rows, function(row){
      if(typeof response[row.key] === 'undefined'){
          response[row.key] = {count1:0,count2: row.count}
      }
      else{
         response[row.key][count2]+=row.count
      }
    }
});
return new Promise()
);
someOtherAsyncCall().then(function(rows){
  _.forEach(rows, function(row){
      if(typeof response[row.key] === 'undefined'){
          response[row.key] = {count2:0,count1: row.count}
      }
      else{
         response[row.key][count1]+=row.count
      }
    }
   res.send(200,response);
});
);