store: Precise event listener

[wmertens]

What is it about?

Be able to know about deletes etc

What's the motivation for this proposal?

Problems you are trying to solve:

• When rendering an array, and splicing a row, it causes all the rows to rerender

Goals you are trying to achieve:

• Be more efficient

Proposed Solution / Feature

What do you propose?

some sort of api, perhaps const change = track(store, storeChangesSymbol) inside a task, and then the task gets called for each change with changes like "{type: StoreChanges.spliced, start, count, insertCount}`

Then, a component like Each would render a story array and could use this API to mark specific vnodes dirty or directly adjust the vnode children

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perhaps this is only really useful in Each, and the link should be hardcoded so that Each components iterating over stores are recorded, so that the callback is in qwik core.

Links / References

No response