Immer: Saving nested drafts

[dfadev]

• [ ] Issue: Forking nested results

  • Version: 1.9.3
  • _SIMPLE_ Reproduction: https://codesandbox.io/s/lrqmlj5pwm

  • Expected behavior:
    I want to be able to save the result of a nested producer for later use.

  • Observed behavior:
    Nested result is unusable once revoked by the parent producer.

  • [ x] Occurs when using Proxies (use setUseProxies(true))

  • [ x] Occurs in the ES5 implementation (use setUseProxies(false))

[aleclarson]

Currently, if you want a nested produce call to actually produce a __copy__, you must pass state to the original function export __before__ calling produce (example). Otherwise, your nested producer will be mutating its parent's draft (example).

The behavior without original __will change__ in the future, but using original on the draft before calling produce will (probably) always be supported.

[dfadev]

I want the nested producer to mutate it's parent's draft and not the original state:

https://codesandbox.io/s/v0q1ljppm0

[aleclarson]

@dfadev Oh, right. My bad!

That's not currently possible! 😞

I might be working on a solution sometime soon. You'll find out if this gets fixed! 👍

[aleclarson]

Ah, just realized what I'm working on won't directly address your issue.

Is there a reason you can't structure your code this way?

[dfadev]

I think you're right, it's better to not nest if I need those states later on. Thanks!

[bebbi]

@aleclarson Would you mind restoring the sandbox you're pointing to in your last comment? It seems helpful to people landing on this issue.