MobX erases Native Objects

[jbis9051]

MobX seems to be erasing my native pointers. (To clarify, I am using MobX without React.)

  // `state` is a mobx store created with `makeAutoObservable(this)`
  const instance = rust.new_instance(); // returns a pointer
  console.log(instance); // [External: 600000d44240]
  state.directHostInstance = instance; // Copy to a MobxStore
  console.log(state.directHostInstance); // {}
  console.log(toJS(state).directHostInstance); // {}

How can I get my [External: 600000d44240] back?

[urugator]

If instance is a plain object, mobx creates an observable copy during an assigment.
If instance should not become observable, you can mark the field as reference makeAutoObservable(this, { directHostInstance: observable.ref })
If it should become observale, you can make it observable manually prior assigment state.directHostInstance = makeAutoObservable(instance), but it's not possible to observe addition/removal of keys of such object.
https://mobx.js.org/observable-state.html#avoid-proxies

[urugator]

Closing for inactivity.