Mongoose: Bulk upsert but only update records if they meet certain criteria
This is how I do it :
let bulkUpdate = MyModel.collection.initializeUnorderedBulkOp(); //myItems is your array of items _.forEach(myItems, (item) => { if (item !== null) { let newItem = new MyModel(item); bulkUpdate.find({ yyy: newItem.yyy }).upsert().updateOne(newItem); } }); await bulkUpdate.execute();I think the code is pretty readable and understandable. You can adjust it to make it work with your case :)