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Kamil Paradowski 226ef2e7c5 ArrayBuffer support to C++ TurboModules (#56729 )

Summary:
Adds `ArrayBuffer` support to C++ TurboModules. This includes:

- Codegen support for `ArrayBufferTypeAnnotation` in module specs
- `AsyncArrayBuffer` — a move-only bridging type for holding ArrayBuffer data off the JS thread
- `Bridging<AsyncArrayBuffer>::toJs` for resolving promises with native-backed or owned-bytes buffers

iOS and Android support will follow in separate PRs. The new codegen type is currently restricted to C++ TurboModules via `excludedPlatforms: ['iOS', 'android']`.

## Changelog:

[GENERAL] [ADDED] - Add `ArrayBuffer` support to C++ TurboModules

Pull Request resolved: https://github.com/facebook/react-native/pull/56729

Test Plan:
- JS parser/generators tests added.
 - New bridging unit tests in `BridgingTest.cpp` cover `AsyncArrayBuffer` construction and JS bridging.
 - `rn-tester`: `getArrayBuffer`, `processAsyncBuffer`, and `getAsyncBuffer` methods added to `NativeCxxModuleExample` in demo app.

```
[chpurrer@54913.od /data/sandcastle/boxes/fbsource (a00a9a84e7)]$ buck test //xplat/js/react-native-github/packages/react-native/ReactCommon/react/bridging:tests
↷ Skip: fbsource//xplat/js/react-native-github/packages/react-native/ReactCommon/react/bridging:tests - BridgingTest.asyncArrayBufferBorrowNativeBackedTest (0.0s)
Note: Google Test filter = BridgingTest.asyncArrayBufferBorrowNativeBackedTest
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from BridgingTest
[ RUN      ] BridgingTest.asyncArrayBufferBorrowNativeBackedTest
xplat/js/react-native-github/packages/react-native/ReactCommon/react/bridging/tests/BridgingTest.cpp:865: Skipped
Runtime does not expose tryGetMutableBuffer; borrow always throws

[  SKIPPED ] BridgingTest.asyncArrayBufferBorrowNativeBackedTest (7 ms)
[----------] 1 test from BridgingTest (7 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (7 ms total)
[  PASSED  ] 0 tests.
[  SKIPPED ] 1 test, listed below:
[  SKIPPED ] BridgingTest.asyncArrayBufferBorrowNativeBackedTest

Buck UI: https://www.internalfb.com/buck2/4a7fa180-4ce6-4dcf-b685-45d183bd4091
Test UI: https://www.internalfb.com/intern/testinfra/testrun/30680772470375729
Network: Up: 0B  Down: 0B  (reSessionID-9a7e839f-b20c-4d94-944f-8d1720e694f8)
Command: test.
Time elapsed: 3.0s
Buck UI: https://www.internalfb.com/buck2/4a7fa180-4ce6-4dcf-b685-45d183bd4091
Tests finished: Pass 31. Fail 0. Timeout 0. Fatal 0. Skip 1. Omit 0. Infra Failure 0. Build failure 0
[chpurrer@54913.od /data/sandcastle/boxes/fbsource (a00a9a84e7)]$
```

## RNTester-ios
```
buck install -r rntester-ios
```
 https://pxl.cl/9TgTf

Reviewed By: javache

Differential Revision: D105629442

Pulled By: christophpurrer

fbshipit-source-id: 91f6e3d16f69ba792469e02d6e539794e70b7101

2026-05-21 10:29:49 -07:00

e2e

Respect enum values for TurboModule c++ codegen (#56478 )

2026-04-17 14:59:10 -07:00

scripts

Replace glob@^7.0.0 with tinyglobby@^0.2.15 (#54737 )

2025-12-03 05:45:48 -08:00

src

ArrayBuffer support to C++ TurboModules (#56729 )

2026-05-21 10:29:49 -07:00

.babelrc

switch to hermes for react-native-codegen (#56024 )