# metro v0.84.6

- Product: metro (https://whatsnew.fyi/product/metro)
- Vendor: metro
- Date: 2026-09-02
- Version: v0.84.6
- Original notes: https://github.com/react/metro/releases/tag/v0.84.6
- Permalink: https://whatsnew.fyi/product/metro/releases/v0.84.6

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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- **fixed** — Fix async functions being inferred as returning void instead of Promise<void>
- **changed** — Tidy up generated types and allow nullable props to be omitted in more places

*This release is on the [`0.84.x`](https://github.com/facebook/metro/tree/0.84.x) branch*

 - **[Types]**: Fix async functions being inferrerd as returning `void` (not `Promise<void>`). (https://github.com/react/metro/pull/1887 by @robhogan)
 - **[Types]**: Tidy up generated types, allow nullable props to be omitted in more places. (https://github.com/react/metro/pull/1897 by @robhogan)
 
 **Full Changelog**: https://github.com/facebook/metro/compare/v0.84.5...v0.84.6