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Version 1.3.0

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@estherbrunner estherbrunner released this 27 Apr 06:50
· 151 commits to main since this release
v1.3.0
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What's Changed

Added

  • SlotDescriptor support for bi-directional derivations: createSlot() and Slot#replace() now accept a duck-typed SlotDescriptor<T> object ({ get(): T, set?(next: T): void }) in addition to a Signal<T>. This allows establishing stable, native reactive edges for derived { get, set } pairs without the need for an intermediary Computed signal, which prevents edge corruption during cascading graph updates. If a descriptor omits the set function, the slot safely behaves as read-only.
  • Configurable itemEquals for List and Collection: Added an itemEquals option to both ListOptions and CollectionOptions. It defaults to DEEP_EQUALITY. This prevents spurious reactive propagation when spread-based updates (list.replace(key, { ...item.get(), field: newValue })) produce structurally identical items.
  • Configurable createItem factory for List: Added a createItem?: (value: T) => MutableSignal<T> option to ListOptions, bringing it to parity with CollectionOptions. This allows backing list items with custom mutable signals, such as createStore for granular, per-property reactivity within a list. List methods like at(), byKey(), and its iterator now correctly return MutableSignal<T> instead of strictly State<T>.

Full Changelog: v1.2.1...v1.3.0

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