XState 6.0.0-alpha.51

Minor Changes

• 29dae8c: Improve setup(...) state contracts with typed structural metadata, recursive state input requirements for composite and parallel entry, history-default validation, strongly typed relative targets, and shared input requirements for literal target sets.

• b44d9cb: State-level context schemas now refine the root context schema instead of replacing it. Declare only the fields narrowed by a state while retaining all root context fields in state actions, transitions, and narrowed snapshots. Nested states retain active ancestor refinements, and xstate/fsm uses the same refinement semantics.

  const machine = setup({
    schemas: {
      context: z.object({
        requestId: z.string(),
        draft: z.string().optional()
      })
    },
    states: {
      reviewing: {
        schemas: { context: z.object({ draft: z.string() }) }
      }
    }
  }).createMachine({
    context: { requestId: 'req-1' },
    // ...
  });