Hello,

 
The methode findOneAndUpdate with a empty update field $unset all the field. :
 
collection.findOneAndUpdate({ _id: new ObjectID(id) }, {}, { upsert: false })
 
I know that if empty i should prefer use only the findOne method but it seems dangerous to unset all if empty in this method. and i need to use it like this. Expect to do nothing if empty.
 
 
Dor now i make the trick to protect against the $unset all with : 
collection.findOneAndUpdate({ _id: new ObjectID(channelId) }, { $setOnInsert:

}, { upsert: false })
 
Can you update this rules?