MongoDB- Insert if it doesn't exist, else skip

Question

Is it possible to insert in Mongo with condition;

//Pseudo code

Bulk Insert Item :

If Key exists
    Skip, don\'t throw error
If key does not exist
    Add         


        

Answer 1

Use setOnInsert

db.collection('collection').updateOne(
     { _id: data._id },
    { $setOnInsert: { ...data } },
    { upsert: true },
  )