Version Packages

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This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

Releases

@humanlayer/effect-machine@0.19.0

Minor Changes

• #3 bb1e377 Thanks @K-Mistele! - Remove the deprecated Slot API in favor of Effect services supplied through Layers to .task(), .spawn(), and .background().

  This release also strengthens the package's type and runtime boundaries:

  • Requirement-growing builder methods are copy-on-write, keeping earlier machine aliases unchanged and truthfully typed.
  • Heterogeneous actor registries expose an eventless ActorHandle; exact typed spawn results remain ActorRef<State, Event>.
  • Transition and state-effect registries retain their state/event correlations without chained assertions.
  • State-effect contexts expose explicit $init and $enter lifecycle events.
  • Entity machines own their RPC protocol; remote Ask replies are decoded with event-specific schemas and client errors remain typed.
  • Persistence writes encode state and events through machine codecs, while loaded records remain unknown until full schema decoding.
  • Local and entity Ask paths support transforming reply codecs without duplicate decoding or stranded deferred replies.
  • Repeated and concurrent actor.start callers observe the original startup failure cause.
  • Source enforces unsafe, chained, widening, and unnecessary type-assertion rules. Tests remain exempt from unsafe and unnecessary assertion checks.

  Intentional API changes:

  • Remove Slot, slot schemas/types/errors, Machine.make({ slots }), ctx.slots, and slot provision options.
  • toEntity(machine) returns a machine-owned MachineEntity; call EntityMachine.layer(entity, options?).
  • Call makeEntityActorRef(entity, client, entityId) so the wrapper can decode replies and preserve client errors.
  • system.get, system.actors, system events, and actor.children expose ActorHandle.
  • Transition and spawn-effect introspection expose guarded matches / run operations instead of erased handlers.
  • Legacy compatible constructors without a static tag can use Machine.tagged(tag, constructor).

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