statelyai/xstate xstate@5.0.0-beta.30

on GitHub

Major Changes

• #4299 bd9a1a599 Thanks @Andarist! - All actor snapshots now have a consistent, predictable shape containing these common properties:

  • status: 'active' | 'done' | 'error' | 'stopped'
  • output: The output data of the actor when it has reached status: 'done'
  • error: The error thrown by the actor when it has reached status: 'error'
  • context: The context of the actor

  This makes it easier to work with actors in a consistent way, and to inspect their snapshots.

  const promiseActor = fromPromise(async () => {
    return 42;
  });
  
  // Previously number | undefined
  // Now a snapshot object with { status, output, error, context }
  const promiseActorSnapshot = promiseActor.getSnapshot();
  
  if (promiseActorSnapshot.status === 'done') {
    console.log(promiseActorSnapshot.output); // 42
  }