useStore: have a separate subscription for object shape

[wmertens]

What is it about?

subscribing to mapping a store

What's the motivation for this proposal?

Problems you are trying to solve:

Right now when you do Object.keys(store), you subscribe to the store object and all mutations of it attributes.

Instead, you should only be subscribed to shape changes.

---

Proposed Solution / Feature

What do you propose?

in the store proxy, calling the ownKeys should subscribe you to a separate signal that only gets called when the object keys change

This becomes an important distinction when mapping a store to DOM, and mutating the store elements. Currently, that rerenders the mapping, and only the changed elements should be rerendering.

Code examples

https://qwik.dev/playground/#f=7VbLCsIwEPyV3JJCCb7wILYf4EEPHsWDT9L6qBCKlJB%2Fd5KtNRaRXgVPIQtZdjPDzASkGY96n0gTN5b7lT60J8lkEjyfwmVSIQwDss32oTNzeqNhUDhQgaGeK3Z3MrnZ711o8EmDRwEBXRahXHE6VMDULLY55FO6m9CRzKGRgjMeWcot4Gc3hr9N5pAOBzuAf5WXcW%2BQNMBOba7wFj9eHWjwAU1M8esbprIJW%2FVjNojZcI2faO1CuFCyegUKQ3NpuYVaJowrRwRuU%2FgwPA9WUsBJUWoyWbc2x6LVBIWuLVQmb6VWop4lsuml9NapslaLGtbEaPukoZktF3NJSTA7VgDKok4I%2FSXkVyXkAQ

---

Links / References

No response