storeToRefs breaks reactivity with Ref<Set>

[ryanolf-tb]

Reproduction

https://play.pinia.vuejs.org/#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

Steps to reproduce the bug

Click on the "add to n and m" button.

Expected behavior

The sets of n and m values should grow.

Actual behavior

Only the set of m grows.

The values of each n and m are added to sets s and t, respectively. A watcher is meant to increment n and m when the respective set is added to. However, the watcher of the ref obtained from storeToRefs does not trigger.

Additional information

No response

[ryanolf-tb]

Maybe it's a separate issue, but in the example you can also see that assigning a new Set to the store.t breaks the reactive connection to the watcher. My understanding from https://masteringpinia.com/blog/ref-vs-reactive-in-stores was that this is also not the expected behavior.

[posva]

The problem lies on the watch(s, ... Since s is a ref of the set, it will only trigger if the value changes, that means if a new set is assigned. For what you want, you need to use deep: true in your watcher.

[ryanolf-tb]

Thanks for the quick solution. I had thought watch was deeply reactive for ref but apparently that's not true with Set. Thanks again.