Populate data and string UUID using toJSON()

[AaronPorts]

How to use toJSON and toObject with populated data and stringified UUID?

import { model, Schema } from "mongoose";

const nodeSchema = new Schema({ _id: { type: "UUID" }, name: "String" });
const rootSchema = new Schema({
  _id: { type: "UUID" },
  status: "String",
  node: [{ type: "UUID", ref: "node" }],
});

const Node = model("node", nodeSchema);
const Root = model("root", rootSchema);

const node = new Node({
  _id: "65c7953e-c6e9-4c2f-8328-fe2de7df560d",
  name: "test",
});
await node.save();

const root = new Root({
  _id: "05c7953e-c6e9-4c2f-8328-fe2de7df560d",
  status: "ok",
  node: [node._id],
});
await root.save();

const foundRoot = await Root.findOne({ status: "ok" }).populate("node");

// We have populated data, but UUID is Buffer
console.log(foundApp.toJSON())
{ 
  _id: { type: "Buffer", data: [ 5,199,149,62,198,233,76,47,131,40,254,45,231,223,86,13] },
  status: "ok",
  node: [{ _id: { type: "Buffer", data: [101,199,149,62,98,233,76,47,131,40,254,45,231,223,86,13]}, name: "test", __v: 0}],
  __v: 0,
}
// We have UUID as string but "[object -Obje-ct]--" in populated data
console.log(foundApp.toJSON({getters: true}))
{
  _id: "05c7953e-c6e9-4c2f-8328-fe2de7df560d",
  status: "ok",
  node: [ "[object -Obje-ct]--" ],
  __v: 0,
}

[vkarpov15]

This is a bug in Mongoose, we put in PR #14890 to fix.