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[pull] main from facebook:main#537

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pull[bot] merged 1 commit intocode:mainfrom
facebook:main
Apr 27, 2026
Merged

[pull] main from facebook:main#537
pull[bot] merged 1 commit intocode:mainfrom
facebook:main

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@pull pull Bot commented Apr 27, 2026

See Commits and Changes for more details.


Created by pull[bot] (v2.0.0-alpha.4)

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## Summary

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Explain the **motivation** for making this change. What existing problem
does the pull request solve?
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- Adds a new react-flight-server-fb package providing RSC Flight
bindings for Meta's internal bundler stack
- Unlike webpack/turbopack integrations, this uses no manifest. Module
metadata is self-contained in ClientReference objects and sent over the
wire as-is
- Registers dom-browser-fb and dom-node-fb host configs for Rollup
builds targeting FB_WWW_DEV and FB_WWW_PROD

 Key design differences from other bundler

 - No build-time manifest
- Module IDs use Haste module names (e.g. `"MyComponent"`), with named
exports encoded as `"Module#export"`, rather than file paths resolved
through a manifest
- Client-side loading uses `Bootloader.handlePayload()` +
`JSResource().load()`
- `resolveClientReferenceMetadata` and `resolveClientReference` are
pass-throughs

## How did you test this change?

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E2E integration test is set up on Meta's internal system.
@pull pull Bot locked and limited conversation to collaborators Apr 27, 2026
@pull pull Bot added the ⤵️ pull label Apr 27, 2026
@pull pull Bot merged commit ad5dfc8 into code:main Apr 27, 2026
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