Can I use state = AsyncData(state.value!.copyWith(newState)); to update state?

[phamquoctrongnta]

Is it safe when I use below code to update state?

state = AsyncData(state.value!.copyWith(newState));

[idispatch75]

What may not be safe?
If your concern is that state.value may be null, you can just use state methods to test that and update your state accordingly.
If you use this code in response to user interaction, then you know whether this interaction is possible only when the state is loaded, and in this case you can just use state.requireValue (this avoid the !).
Also inspect the API of AsyncValue, there are many interesting methods in there.