Minor Changes

• 54205cc: Export setup helper types for libraries that return or decorate setup-bound objects while preserving native setup(...).createMachine(...) typing.

  import {
    setup,
    type AnySetupConfig,
    type SetupReturnFromConfig
  } from 'xstate';
  
  function decorateSetup<const TConfig extends AnySetupConfig>(
    config: TConfig
  ): SetupReturnFromConfig<TConfig> & { extra: true } {
    const s = setup(config) as SetupReturnFromConfig<TConfig>;
  
    return Object.assign(s, { extra: true as const });
  }
  

Patch Changes

• 54205cc: Empty Standard Schema event objects now infer as type-only events, so { type: 'SEND' } is accepted for an empty SEND payload schema while non-empty schemas still require their payload fields.
• 54205cc: Registered invoke onDone callbacks now receive the invoked actor's output type, and machine.provide({ actorSources }) accepts compatible actor implementations with sound input/output variance.