# XState 5.22.1

- Product: XState (https://whatsnew.fyi/product/xstate)
- Vendor: Stately
- Date: 2025-10-02
- Version: 5.22.1
- Original notes: https://github.com/statelyai/xstate/releases/tag/xstate%405.22.1
- Permalink: https://whatsnew.fyi/product/xstate/releases/5.22.1

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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- **changed** — Make actor.systemId public so it can be accessed after actor creation
- **fixed** — Remove eventType from required fields in initialTransitionObject

###### Patch Changes

-   [#5379](https://github.com/statelyai/xstate/pull/5379) [`98f9ddd`](https://github.com/statelyai/xstate/commit/98f9ddde939320fb698ef382f6712a0753d55ca5) Thanks [@davidkpiano](https://github.com/davidkpiano)! - Make `actor.systemId` public:

    ```ts
    const actor = createActor(machine, { systemId: 'test' });
    actor.systemId; // 'test'
    ```

-   [#5380](https://github.com/statelyai/xstate/pull/5380) [`e7e5e44`](https://github.com/statelyai/xstate/commit/e7e5e44c3758eec4c1380bd604539406ad71115a) Thanks [@Nirajkashyap](https://github.com/Nirajkashyap)! - fix: remove 'eventType' from required fields in initialTransitionObject