# XState 5.29.0

- Product: XState (https://whatsnew.fyi/product/xstate)
- Vendor: Stately
- Date: 2026-03-24
- Version: 5.29.0
- Original notes: https://github.com/statelyai/xstate/releases/tag/xstate%405.29.0
- Permalink: https://whatsnew.fyi/product/xstate/releases/5.29.0

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 `actor.select(selector, equalityFn?)` method to derive a `Readable<TSelected>` from an actor's snapshot with `.subscribe()` and `.get()` methods for accessing selected values

###### Minor Changes

-   [#5299](https://github.com/statelyai/xstate/pull/5299) [`ca8306f`](https://github.com/statelyai/xstate/commit/ca8306f865475fa0404c419730a24e3a5e392521) Thanks [@Uniqen](https://github.com/Uniqen)! - Add `actor.select(selector, equalityFn?)` method to derive a `Readable<TSelected>` from an actor's snapshot. The returned object has `.subscribe()` (only emits when the selected value changes, using `Object.is` by default) and `.get()` for synchronous access.

    ```ts
    const actor = createActor(machine);
    actor.start();

    const count = actor.select((snap) => snap.context.count);

    count.get(); // current value

    count.subscribe((value) => {
      console.log(value); // only fires when count changes
    });
    ```