Sync State Function

[RicardoJBarrios]

Hello.

I've been doing a simple POC for a sync-state function based in BroadcastChannel that works well with persist-state (see here and open in multiple tabs), but the only way I found to check if there are changes is with an isEqual function.

I think this could end up giving performance problems, and maybe there is another way to discriminate a specific type of mutation to publish the message, although reviewing the code I have not found it. Someone with a better idea about how to implement this?

I think that this could be a good library to add to 🧝.

[NetanelBasal]

I don't think there is another way to do this because it gives you another reference. But why do you need this check? It should emit only when the store's value changes.

[RicardoJBarrios]

In my first attempts it was a way to avoid infinite loops, but now is true that this is'n needed. Just checked it.

[RicardoJBarrios]

If you want to, I can put more love to the code: add options to change the broadcast name, sync only a state subset, add a good set of tests and add a pull request as a new package @ngneat/elf-sync-state.

[NetanelBasal]

Sounds good. You can add it to your account, and link it from our official docs.

[RicardoJBarrios]

I've been checking another stores and almost all uses the broadcast-channel library, that add options about how to handle the sync and more options, but this add another dep. Do you prefer that we leave it alone with the native option or do I add the dependency?

[NetanelBasal]

I think we should start without it

[RicardoJBarrios]

I've just pushed the working library with the tests, some documentation and the NPM package as you said. If you want to add it to the main package just copy and paste and I'll delete this repo ;)

[NetanelBasal]

Let me know when you publish it and I'll add it to our docs.

[RicardoJBarrios]

I've just published the v1.0.0 🎉

[NetanelBasal]

Nice, do you want to add it to the docs under a new third party library category?

[RicardoJBarrios]

It's perfect for me 👍