statelyai/xstate xstate@6.0.0-alpha.69

on GitHub

Patch Changes

• aaa891a: createAsyncLogic no longer rejects a run that returns a literal matching schemas.output. Previously a parameterless run widened { kind: 'a' } to { kind: string }, so the call failed with "not assignable to type 'never'", including inside machine.provide({ actors }). A run that does not match schemas.output now reports the output mismatch.

  type Outcome = { kind: 'a' } | { kind: 'b'; n: number };
  
  const load = createAsyncLogic({
    schemas: { input: types<{ id: string }>(), output: types<Outcome>() },
    run: async () => ({ kind: 'a' }) // OK, output is `Outcome`
  });

  A parameterless run now keeps literal return types whenever schemas is provided, including input-only and error-only schemas. Without schemas, outputs still widen ({ ok: true } is { ok: boolean }).