Passing {virtuals: true} to toObject does not have the same effect as toJSON{ vrituals: true}
Tested on Ubuntu 22.04 and Windows 10 using version "^6.9.2"


Can be replicated with the following model file:

const postSchema = new Schema(
  {
    text: String,
    username: String,
    comments: [{ type: Schema.Types.ObjectId, ref: 'comment' }],
  },
  {
    // replace with toJSON to revert to correct behavior
    toObject: {
      virtuals: true,
    },
  }
);

// Create a virtual property `commentCount` that gets the amount of comments per post
postSchema.virtual('commentCount').get(function () {
  return this.comments.length;
});

// Initialize our Post model
const Post = model('post', postSchema);

Please correct if I'm using this code erroneously