Model.findOneAndUpdate upsert code example

Example: findoneandupdate new true

const filter = { name: 'Will Riker' };
const update = { age: 29 };

await Character.countDocuments(filter); // 0

let res = await Character.findOneAndUpdate(filter, update, {
  new: true,
  upsert: true,
  rawResult: true // Return the raw result from the MongoDB driver
});

res.value instanceof Character; // true
// The below property will be `false` if MongoDB upserted a new
// document, and `true` if MongoDB updated an existing object.
res.lastErrorObject.updatedExisting; // false