# XState 6.0.0-alpha.49

- Product: XState (https://whatsnew.fyi/product/xstate)
- Vendor: Stately
- Date: 2026-08-25
- Version: 6.0.0-alpha.49
- Original notes: https://github.com/statelyai/xstate/releases/tag/xstate%406.0.0-alpha.49
- Permalink: https://whatsnew.fyi/product/xstate/releases/6.0.0-alpha.49
- Labels: Pre-release

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Add the self-contained xstate/fsm entry point for compact flat finite state machines, exporting createFSM and createFSMActor without the full statechart actor runtime
- **added** — FSM runtime supports guarded transitions, context, actions, eventless transitions, final states, child actors, delayed events, and snapshot persistence for state, context, and self-directed timers

###### Minor Changes

- 501c5e3: Add the self-contained `xstate/fsm` entry point for compact flat finite state
  machines. It exports `createFSM` and `createFSMActor` without including the full
  statechart actor runtime.
  
  ```ts
  import { createFSM, createFSMActor } from 'xstate/fsm';
  
  const logic = createFSM({
    initial: 'inactive',
    states: {
      inactive: { on: { toggle: { target: 'active' } } },
      active: { on: { toggle: { target: 'inactive' } } }
    }
  });
  
  const actor = createFSMActor(logic).start();
  ```
  
  The FSM runtime also supports guarded transitions, context, actions, eventless
  transitions, final states, child actors, delayed events, and snapshot
  persistence for state, context, and self-directed timers. Live inline children
  and timers targeting other actors are rejected at the persistence boundary
  because the compact runtime has no registered actor-source registry.