0.4.0

The big theme of 0.4.0 is collapsing the effect pipeline onto MainActor and tightening the concurrency contract. The store no longer owns a lock, an actor, or a driver task — isolation alone provides ordering. As a side effect, Send is now properly async.

Breaking changes

• Send is now async. Inside .run effect bodies you must await send(.action). Callers no longer spawn a Task per dispatch; the await hops to MainActor and returns when the dispatch is complete.

  // before
  return .run { send in
      let data = await fetchData()
      send(.updateData(data))
  }
  
  // after
  return .run { send in
      let data = await fetchData()
      await send(.updateData(data))
  }

• @Shared.wrappedValue is read-only. The setter was unused and only created the illusion that you could rebind a shared store. For test-time overrides, use StoreValues.withValues { ... } instead.

• Effect pipeline is fully MainActor-isolated. .run register/cancel and .cancel(id:) now happen synchronously on MainActor, so a cancel dispatched in the same send chain as a .cancellable(id:) is guaranteed to observe its registration. The internal driver actor and lock are gone.

Fixed

• .animation(nil) now actually clears any attached animation.
• Persistence no longer wipes stored data on encode/decode failure — the blob is preserved so a future migration can read it.
• Store.cancel(id:) logs on miss instead of silently no-oping.
• Eliminated a register/cancel race in the effect lifecycle.

Concurrency & tooling

• Single Package.swift with swiftLanguageModes: [.v6].
• Swift 7 upcoming features enabled across all targets (ExistentialAny, InternalImportsByDefault, MemberImportVisibility, InferIsolatedConformances, NonisolatedNonsendingByDefault).
• Bumped swift-syntax to 603.0.1 for Swift 6.2 toolchains.

Internal

• Store.tasks is now private(set).
• KeyPath resolution routes through StoreValues.current(_:).
• Dropped redundant lock in StoreValues — MainActor isolation is enough.
• Removed empty deinit and clarified willSave is internal Storable plumbing.

Docs

• Full README rewrite against the 0.4.0 API.
• @Inject docblock spells out the expansion contract and the __Store_<name> peer naming.
• Binding capture policy (strong getter / weak setter) documented and pinned with regression tests.

CI

• GitHub Actions workflow: swift build + swift test on macos-26 for every PR and push to master.

Tests

• SwiftUI rendering baseline using real hosted views, plus negative-invariant coverage.
• Coverage for previously untested public API surfaces.
• Cleaned up flaky Task.sleep-based waits.

Full Changelog: 0.3.2...0.4.0