Object key containing the stable item ID.
A reconciler that updates matching array items in place.
Use this for non-Convex arrays whose items have stable IDs. Reconciliation
updates matching items in place so child object identity stays stable for
useNode(item) rows and Retree parent relationships.
Do not use index-based reconciliation for lists that can reorder. Prefer a stable ID from the server.
Create a reconciler for arrays of objects with stable IDs.