xstate@5.0.0-beta.12

Major Changes

• #3990 fe6db147a Thanks @davidkpiano! - You can now add a systemId to spawned actors to reference them anywhere in the system.

  const machine = createMachine({
    // ...
    context: ({ spawn }) => ({
      actorRef: spawn(
        createMachine({
          // ...
        }),
        { systemId: 'actorRef' }
      )
    })
  });

• #3991 98db493e4 Thanks @davidkpiano! - The actor.onDone(...) method is removed. Use actor.subscribe({ complete() {... } }) instead.

  - actor.onDone(() => { ... })
  + actor.subscribe({
  +  complete() {
  +    // ...
  +  }
  +})