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docs(ios-prebuild): correct how SwiftPM consumes the prebuilt React headers #58007

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docs(ios-prebuild): correct how SwiftPM consumes the prebuilt React headers #58007

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8 changes: 7 additions & 1 deletion packages/react-native/scripts/ios-prebuild/__docs__/README.md
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Expand Up @@ -138,7 +138,13 @@ The prebuild (`xcframework.js`) always produces:

- `React.xcframework` — the compiled React core. Each slice's `React.framework`
carries the headers-spec layout (every `<React/...>` header + the framework
module map), which is what both CocoaPods and SwiftPM consume.
module map). CocoaPods consumes that layout directly, through
`FRAMEWORK_SEARCH_PATHS`. SwiftPM consumes the same headers indirectly: the
XCFramework is not a member of the Swift package graph, so the consumer side
stages a copy of `React.framework/Headers` into
`ReactHeadersTarget/include/React` and rewrites `framework module React` to a
plain `module React`, vended as the `ReactHeaders` target (see
`spm-header-paths-contract.md` in the SwiftPM docs).
- `ReactNativeHeaders.xcframework` — headers-only; carries every other
namespace. Consumed by SwiftPM as a `binaryTarget` and by CocoaPods via the
`React-Core-prebuilt` pod (headers flattened onto the header search path).
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