Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/34015
I noticed this was a very slow part of my build because each instance of the binary would run its own yarn install. Instead use the yarn_workspace approach to share a single yarn setup.
Changelog: [Internal]
Reviewed By: IanChilds
Differential Revision: D37178005
fbshipit-source-id: cba51e168c5a2f2ee6468acb8c144db4ad352d95
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/31543
Changelog:
[iOS][Added] - Description
When compiling iOS apps with flag `-Wnullability-completeness` (like Lightspeed app and soon Instagram), Objective-C headers are required to either have full *explicit* nullability annotations on all members of its public API, or none at all; partially annotated headers will fail to build that module.
RN native modules are currently generated with *partial* annotations. This works today because most apps are not compiled with `-Wnullability-completeness` turned on. But when we flip the switch for Instagram, the app doesn't build due to importing these RN partially annotated modules.
JavsScript Flow types are implied nonnull, and the current RN codegen translates Flow's [maybe/optional](https://flow.org/en/docs/types/maybe/) type to Obj-C `_Nullable` annotation, and everything else without an explicit Obj-C annotation. However this creates a mismatch with the Obj-C type system, where the implied default is *unannotated*, which is handled differently from nonnull when built with the nullability compiler flags.
There is a simple Obj-C macro that automatically adds *explicit nonnull* annotations to all members in a header: `NS_ASSUME_NONNULL_BEGIN` / `NS_ASSUME_NONNULL_END`. If we add this to *all* RN-generated headers, however, we run into issues:
1) We may erroneously assume any previously-unannotated header was meant to be nonnull and cause future bugs
2) Another compiler flag (`-Wnullable-to-nonnull-conversion`) statically analyzes Obj-C implementation code to prevent us from ever passing null to one of these headers. Much existing Obj-C code will break here, and it's ambiguous if these are true or false positives because of the first point.
Instead, in this diff we add a new BUCK flag `ios_assume_nonnull` to let module authors opt into automatic nonnull for unannotated members so that Obj-C headers are generated correctly in alignment with Flow's type system. We can migrate all libraries individually as needed and eventually make this the RN native codegen default.
Reviewed By: RSNara
Differential Revision: D28396446
fbshipit-source-id: ad3a3a97ab19183df4ef504b1c3140596c8f69ca
Summary:
## Changes
All `rn_library(codegen_modules = True)` must now also specify native_module_android_package_name, like so:
```
rn_library(
name = "FBAuth"
codegen_modules = True,
native_module_spec_name = "Foo",
native_module_android_package_name = "com.facebook.fbreact.specs",
)
```
This will generate the FBAuth Java spec files under the appropriate directory: "com/facebook/fbreact/specs". It will also make the code-generated specs have the appropriate package name: "com.facebook.fbreact.specs".
Changelog: [Internal]
Reviewed By: shergin
Differential Revision: D25723176
fbshipit-source-id: 6efec1cbee43d70110c0ef23e2422e08609b61d4
Summary:
This moves the test script that generates **all outputs using all generators** to a dedicated "generate-all" CLI. This allows us to use it via Buck, at FB and OSS.
Also renamed the target to be more specific: "rn_codegen" => "generate_all_from_schema"
Changelog: [Internal]
Reviewed By: hramos
Differential Revision: D24513995
fbshipit-source-id: 8435d3d065718eb1309c1c61fe28fb592787311a
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