`reconcile` problem when array should replace an object

[jcmonnin]

Describe the bug

I have a data structure coming as JSON from the server that is put in a store. When a new state from server comes, reconcile is used to update the store in order to keep fine grained updates.

When there is an existing object in store, which should be an array after store update, reconcile shows strange behavior.

Your Example Website or App

https://playground.solidjs.com/anonymous/ab7db9d8-47b6-4fd7-8f0b-fda541030b92

Steps to Reproduce the Bug or Issue

The example below shows the strange behavior of reconcile

const [store, setStore] = createStore({"a":{"b":1}});
setStore(reconcile({"a":[{"b": 1}]}));
console.log("with reconcile", JSON.stringify(store));

outputs:

with reconcile {"a":{"0":{"b":1},"b":1}}

Expected behavior

When not using reconcile the store has the expected state:

const [store, setStore] = createStore({"a":{"b":1}});
setStore({"a":[{"b": 1}]});
console.log("without reconcile", JSON.stringify(store));

outputs:

without reconcile {"a":[{"b":1}]}

Screenshots or Videos

No response

Platform

• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Version: [e.g. 91.1]

Additional context

No response

[raviqqe]

The fix seems to be deployed to the npm registry. But I still see the problem on v1.8.17. https://github.com/raviqqe/til/blob/9b08c2db269100e6eac19dd7c10ef73e4788cc86/solid-array-store/src/store.test.ts#L32