Add react-flight-server-fb package for Meta's internal bundler#36309
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imdreamrunner merged 1 commit intofacebook:mainfrom Apr 27, 2026
Merged
Add react-flight-server-fb package for Meta's internal bundler#36309imdreamrunner merged 1 commit intofacebook:mainfrom
imdreamrunner merged 1 commit intofacebook:mainfrom
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Comparing: 561ed52...8895570 Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
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Cache version of GitHub Workflows was bump to set up symlink correctly https://gist.github.com/imdreamrunner/3f4b49cd662140c38e8bfdde57cb167f |
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<!-- Thanks for submitting a pull request! We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. The three fields below are mandatory. Before submitting a pull request, please make sure the following is done: 1. Fork [the repository](https://github.com/facebook/react) and create your branch from `main`. 2. Run `yarn` in the repository root. 3. If you've fixed a bug or added code that should be tested, add tests! 4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development. 5. Run `yarn test --prod` to test in the production environment. It supports the same options as `yarn test`. 6. If you need a debugger, run `yarn test --debug --watch TestName`, open `chrome://inspect`, and press "Inspect". 7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`). 8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files. 9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`). 10. If you haven't already, complete the CLA. Learn more about contributing: https://reactjs.org/docs/how-to-contribute.html --> ## Summary <!-- Explain the **motivation** for making this change. What existing problem does the pull request solve? --> - 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? <!-- Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface. How exactly did you verify that your PR solves the issue you wanted to solve? If you leave this empty, your PR will very likely be closed. --> E2E integration test is set up on Meta's internal system. DiffTrain build for [ad5dfc8](ad5dfc8)
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Summary
Key design differences from other bundler
"MyComponent"), with named exports encoded as"Module#export", rather than file paths resolved through a manifestBootloader.handlePayload()+JSResource().load()resolveClientReferenceMetadataandresolveClientReferenceare pass-throughsHow did you test this change?
E2E integration test is set up on Meta's internal system.