Expose React Native version as a symbol rather than macro

Summary:
Add RCTGetReactNativeVersion() to expose version in native code. Right now, version is exposed internally to RN using a MACRO constant. This exposes a symbol (function) that can be called to retrieve the React Native version in iOS.

Also exposed RCTVersion.h as a public header in the React project so it is available to developers.

The motivation behind this is for https://github.com/wix/detox —we need to know what RN version the user has, if any, so we can properly handle support and abstract differences.

Ran bump-oss-version.js to ensure the template is applied properly. Also compiled the project to make sure nothing is broken.

 [IOS] [ENHANCEMENT] [RCTVersion.h] - Expose version as a compile-time symbol for native queries

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Closes #18136

Differential Revision: D7141076

Pulled By: hramos

fbshipit-source-id: 18a92b8c60d7b43fa0ed22597ea46a35cff73c56

Author: LeoNatan

React/Base/RCTPlatform.m

@@ -45,7 +45,7 @@ + (BOOL)requiresMainQueueSetup
     @"systemName": [device systemName],
     @"interfaceIdiom": interfaceIdiom([device userInterfaceIdiom]),
     @"isTesting": @(RCTRunningInTestEnvironment()),
-    @"reactNativeVersion": RCT_REACT_NATIVE_VERSION,
+    @"reactNativeVersion": RCTGetReactNativeVersion(),
   };
 }
 

React/Base/RCTVersion.h

@@ -1,15 +1,16 @@
 /**
- * @generated by scripts/bump-oss-version.js
- *
  * Copyright (c) 2015-present, Facebook, Inc.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#define RCT_REACT_NATIVE_VERSION @{ \
-  @"major": @(0), \
-  @"minor": @(0), \
-  @"patch": @(0), \
-  @"prerelease": [NSNull null], \
-}
+
+#import <Foundation/Foundation.h>
+
+extern NSString* const RCTVersionMajor;
+extern NSString* const RCTVersionMinor;
+extern NSString* const RCTVersionPatch;
+extern NSString* const RCTVersionPrerelease;
+
+extern NSDictionary* RCTGetReactNativeVersion(void);

React/Base/RCTVersion.m

@@ -0,0 +1,33 @@
+/**
+ * @generated by scripts/bump-oss-version.js
+ *
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTVersion.h"
+
+NSString* const RCTVersionMajor = @"major";
+NSString* const RCTVersionMinor = @"minor";
+NSString* const RCTVersionPatch = @"patch";
+NSString* const RCTVersionPrerelease = @"prerelease";
+
+static NSDictionary* __rnVersion;
+
+__attribute__((constructor))
+static void __makeVersion()
+{
+  __rnVersion = @{
+                  RCTVersionMajor: @(0),
+                  RCTVersionMinor: @(0),
+                  RCTVersionPatch: @(0),
+                  RCTVersionPrerelease: [NSNull null],
+                  };
+}
+
+NSDictionary* RCTGetReactNativeVersion(void)
+{
+  return __rnVersion;
+}

React/React.xcodeproj/project.pbxproj

@@ -334,6 +334,9 @@
 		352DCFF01D19F4C20056D623 /* RCTI18nUtil.m in Sources */ = {isa = PBXBuildFile; fileRef = 352DCFEF1D19F4C20056D623 /* RCTI18nUtil.m */; };
 		369123E11DDC75850095B341 /* RCTJSCSamplingProfiler.m in Sources */ = {isa = PBXBuildFile; fileRef = 369123E01DDC75850095B341 /* RCTJSCSamplingProfiler.m */; };
 		391E86A41C623EC800009732 /* RCTTouchEvent.m in Sources */ = {isa = PBXBuildFile; fileRef = 391E86A21C623EC800009732 /* RCTTouchEvent.m */; };
+		39C50FF92046EACF00CEE534 /* RCTVersion.h in Copy Headers */ = {isa = PBXBuildFile; fileRef = 199B8A6E1F44DB16005DEF67 /* RCTVersion.h */; };
+		39C50FFB2046EE3500CEE534 /* RCTVersion.m in Sources */ = {isa = PBXBuildFile; fileRef = 39C50FFA2046EE3500CEE534 /* RCTVersion.m */; };
+		39C50FFC2046EE3500CEE534 /* RCTVersion.m in Sources */ = {isa = PBXBuildFile; fileRef = 39C50FFA2046EE3500CEE534 /* RCTVersion.m */; };
 		3D05745A1DE5FFF500184BB4 /* RCTJavaScriptLoader.mm in Sources */ = {isa = PBXBuildFile; fileRef = AC70D2E81DE489E4002E6351 /* RCTJavaScriptLoader.mm */; };
 		3D0B84221EC0B3F600B2BD8E /* RCTResizeMode.h in Copy Headers */ = {isa = PBXBuildFile; fileRef = 3D1FA0851DE4F3A000E03CC6 /* RCTResizeMode.h */; };
 		3D0B84231EC0B40D00B2BD8E /* RCTImageLoader.h in Copy Headers */ = {isa = PBXBuildFile; fileRef = 3D1FA0831DE4F3A000E03CC6 /* RCTImageLoader.h */; };
@@ -1589,6 +1592,7 @@
 			dstPath = include/React;
 			dstSubfolderSpec = 16;
 			files = (
+				39C50FF92046EACF00CEE534 /* RCTVersion.h in Copy Headers */,
 				591F78DE202ADB8F004A668C /* RCTLayout.h in Copy Headers */,
 				59EDBCBD1FDF4E43003573DE /* RCTScrollableProtocol.h in Copy Headers */,
 				59EDBCBE1FDF4E43003573DE /* (null) in Copy Headers */,
@@ -2059,6 +2063,7 @@
 		369123E01DDC75850095B341 /* RCTJSCSamplingProfiler.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTJSCSamplingProfiler.m; sourceTree = "<group>"; };
 		391E86A21C623EC800009732 /* RCTTouchEvent.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTTouchEvent.m; sourceTree = "<group>"; };
 		391E86A31C623EC800009732 /* RCTTouchEvent.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTTouchEvent.h; sourceTree = "<group>"; };
+		39C50FFA2046EE3500CEE534 /* RCTVersion.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTVersion.m; sourceTree = "<group>"; };
 		3D0B84281EC0B49400B2BD8E /* RCTTVRemoteHandler.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTTVRemoteHandler.h; sourceTree = "<group>"; };
 		3D0B84291EC0B49400B2BD8E /* RCTTVRemoteHandler.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTTVRemoteHandler.m; sourceTree = "<group>"; };
 		3D0B842D1EC0B51200B2BD8E /* RCTTVNavigationEventEmitter.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTTVNavigationEventEmitter.h; sourceTree = "<group>"; };
@@ -2997,6 +3002,7 @@
 				83CBBA4F1A601E3B00E9B192 /* RCTUtils.h */,
 				83CBBA501A601E3B00E9B192 /* RCTUtils.m */,
 				199B8A6E1F44DB16005DEF67 /* RCTVersion.h */,
+				39C50FFA2046EE3500CEE534 /* RCTVersion.m */,
 				599FAA291FB274970058CCF6 /* Surface */,
 			);
 			path = Base;
@@ -4153,6 +4159,7 @@
 				5960C1BC1F0804A00066FD5B /* RCTLayoutAnimationGroup.m in Sources */,
 				2D3B5ECF1D9B096F00451313 /* RCTFont.mm in Sources */,
 				2D3B5ED51D9B098000451313 /* RCTModalHostViewController.m in Sources */,
+				39C50FFC2046EE3500CEE534 /* RCTVersion.m in Sources */,
 				2D3B5EBC1D9B092600451313 /* RCTKeyboardObserver.m in Sources */,
 				657734931EE8356100A0E9EA /* RCTInspector.mm in Sources */,
 				59EB6DBE1EBD6FC90072A5E7 /* RCTUIManagerObserverCoordinator.mm in Sources */,
@@ -4467,6 +4474,7 @@
 				13D9FEEB1CDCCECF00158BD7 /* RCTEventEmitter.m in Sources */,
 				599FAA3E1FB274980058CCF6 /* RCTSurfaceRootShadowView.m in Sources */,
 				AC70D2E91DE489E4002E6351 /* RCTJavaScriptLoader.mm in Sources */,
+				39C50FFB2046EE3500CEE534 /* RCTVersion.m in Sources */,
 				14F7A0EC1BDA3B3C003C6C10 /* RCTPerfMonitor.m in Sources */,
 				5960C1B71F0804A00066FD5B /* RCTLayoutAnimation.m in Sources */,
 				13134C9E1E296B2A00B9F3CB /* RCTCxxModule.mm in Sources */,

scripts/bump-oss-version.js

@@ -67,8 +67,8 @@ fs.writeFileSync(
 );
 
 fs.writeFileSync(
-  'React/Base/RCTVersion.h',
-  cat('scripts/versiontemplates/RCTVersion.h.template')
+  'React/Base/RCTVersion.m',
+  cat('scripts/versiontemplates/RCTVersion.m.template')
     .replace('${major}', `@(${major})`)
     .replace('${minor}', `@(${minor})`)
     .replace('${patch}', `@(${patch})`)

scripts/versiontemplates/RCTVersion.h.template

@@ -0,0 +1,33 @@
+/**
+ * @generated by scripts/bump-oss-version.js
+ *
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTVersion.h"
+
+NSString* const RCTVersionMajor = @"major";
+NSString* const RCTVersionMinor = @"minor";
+NSString* const RCTVersionPatch = @"patch";
+NSString* const RCTVersionPrerelease = @"prerelease";
+
+static NSDictionary* __rnVersion;
+
+__attribute__((constructor))
+static void __makeVersion()
+{
+  __rnVersion = @{
+                  RCTVersionMajor: ${major},
+                  RCTVersionMinor: ${minor},
+                  RCTVersionPatch: ${patch},
+                  RCTVersionPrerelease: ${prerelease},
+                  };
+}
+
+NSDictionary* RCTGetReactNativeVersion(void)
+{
+  return __rnVersion;
+}