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cipolleschi merged 4 commits into from
Jul 21, 2023
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docs: iOS backwards compatibility update #3775

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887e9e4
Update backward-compatibility-fabric-components.md
connorpmullins Jun 27, 2023
df77c56
Merge branch 'facebook:main' into docs/backwardsCompatUpdate
connorpmullins Jun 27, 2023
dd40081
Update docs/the-new-architecture/backward-compatibility-fabric-compon…
connorpmullins Jul 10, 2023
ed5ffcc
trim whitespace and fix typo
connorpmullins Jul 20, 2023
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2 changes: 2 additions & 0 deletions docs/the-new-architecture/backward-compatibility-fabric-components.md
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Expand Up @@ -257,6 +257,8 @@ The same two lines should be added in the implementation file, as first and last

The above snippet uses the same `RCT_NEW_ARCH_ENABLED` flag used in the previous [section](#dependencies-ios). When this flag is not set, Xcode skips the lines within the `#ifdef` during compilation and it does not include them into the compiled binary. The compiled binary will have a the `RNMyComponentView.o` object but it will be an empty object.

After wrapping the above components with a `#ifdef` pragma, you need to implement the component for the legacy architecture, following [the legacy Native Component documentation](https://reactnative.dev/docs/native-components-ios). This is needed because the New Renderer works in a different way from the legacy one, and it is not able to follow the new code's paths of the New Renderer.

### Android

As we can't use conditional compilation blocks on Android, we will define two different source sets. This will allow to create a backward compatible TurboModule with the proper source that is loaded and compiled depending on the used architecture.
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