Listen to context value changes

[BMR11]

I want to implement x-state persistence and I am following this https://stately.ai/blog/2023-10-02-persisting-state

I am using subscribe on my root-level actor to listen to context changes:

  rootActor.subscribe(snapshot => {
   const updatedContext = JSON.stringify(snapshot.context);
    console.log("[Context changed]", updatedContext);
   writeToMyStorage(updatedContext)
   root});

It looks like this is fired many times, even if there is only a single value changed in my context object. Also, the value of updatedContext is ALWAYS the same (updated one but all console logs will print the same object value).

I do not want to call writeToMyStorage for the same updatedContext. I can fix this by deep comparing updatedContext from the last value but just wanted to check if I am using it wrong or if there is any better way to achieve this.

Thank you

[cmh-echomark]

@BMR11 I think you will probably want to use getPersistedSnapshot as the example uses:

Here is an entry in the docs describing the difference between snapshot and getPersistedSnapshot https://stately.ai/docs/persistence#persisting-state