How to auto increment id for every element in mongoose?

Question

Mongoose

Hello everyone, can anyone tell me how to edit the model for the table in mongoose so that each element would have an id that was auto-incremented when added? Thank you .
This is how I describe the model now:

const { Schema, model  } = require("mongoose");

const UserSchema = new Schema({
  email: { type: String, unique: true, required: true },
  firstName: { type : String, required: true },
  lastName: { type : String, required: true },
  password: { type: String, required: true },
  isActivated: { type: Boolean, default: false },
  activationLink: { type: String },
  _id: { type: Number }, // ??? Что тут нужно написать ? 
});

module.exports = model("User", UserSchema);

Answer 1

Here you can read how to do it.