Bump macOS minimum to 10.15

Libraries/Image/RCTImageView.mm

@@ -649,18 +649,12 @@ - (RCTPlatformView *)reactAccessibilityElement
 
 - (NSColor *)tintColor
 {
-  NSColor *tintColor = nil;
-  if (@available(macOS 10.14, *)) {
-    tintColor = _imageView.contentTintColor;
-  }
-  return tintColor;
+  return _imageView.contentTintColor;
 }
 
 - (void)setTintColor:(NSColor *)tintColor
 {
-  if (@available(macOS 10.14, *)) {
-    _imageView.contentTintColor = tintColor;
-  }
+  _imageView.contentTintColor = tintColor;
 }
 #endif // ]TODO(macOS GH#774)
 

README.md

@@ -62,7 +62,7 @@ You can read more about the macOS implementation on our website - [React Native
 
 ## Requirements
 
-You can run React Native for macOS apps on Mac devices with versions Mojave (10.14) or newer.
+You can run React Native for macOS apps on Mac devices with versions Catalina (10.15) or newer.
 
 For a full and detailed list of the system requirements and how to set up your development platform, see our [System Requirements](https://microsoft.github.io/react-native-windows/docs/rnm-dependencies) documentation on our website.
 

React-Core.podspec

@@ -78,7 +78,7 @@ Pod::Spec.new do |s|
   end
 
   s.subspec "Hermes" do |ss|
-    ss.platforms = { :osx => "10.15" }
+    ss.platforms = { :osx => "10.15", :ios => "11.0"  }
     ss.source_files = "ReactCommon/hermes/executor/*.{cpp,h}",
                       "ReactCommon/hermes/inspector/*.{cpp,h}",
                       "ReactCommon/hermes/inspector/chrome/*.{cpp,h}",

React/Base/macOS/RCTDynamicColor.m

@@ -59,14 +59,12 @@ - (void)encodeWithCoder:(NSCoder *)aCoder
 - (NSColor *)effectiveColor
 {
   NSColor *effectiveColor = _aquaColor;
-  if (@available(macOS 10.14, *)) {
-    NSAppearance *appearance = [NSAppearance currentAppearance] ?: [NSApp effectiveAppearance];
+  NSAppearance *appearance = [NSAppearance currentAppearance] ?: [NSApp effectiveAppearance];
 
-    NSAppearanceName appearanceName = [appearance bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
+  NSAppearanceName appearanceName = [appearance bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
 
-    if (_darkAquaColor != nil && [appearanceName isEqualToString:NSAppearanceNameDarkAqua]) {
-      effectiveColor = _darkAquaColor;
-    }
+  if (_darkAquaColor != nil && [appearanceName isEqualToString:NSAppearanceNameDarkAqua]) {
+    effectiveColor = _darkAquaColor;
   }
   return effectiveColor;
 }

React/CoreModules/RCTAppearance.mm

@@ -66,29 +66,24 @@ void RCTOverrideAppearancePreference(NSString *const colorSchemeOverride)
 #else // [TODO(macOS GH#774)
 NSString *RCTColorSchemePreference(NSAppearance *appearance)
 {
-  if (@available(macOS 10.14, *)) {
-    static NSDictionary *appearances;
-    static dispatch_once_t onceToken;
-
-    dispatch_once(&onceToken, ^{
-      appearances = @{
-                      NSAppearanceNameAqua: RCTAppearanceColorSchemeLight,
-                      NSAppearanceNameDarkAqua: RCTAppearanceColorSchemeDark
-                      };
-    });
-
-    if (!sAppearancePreferenceEnabled) {
-      // Return the default if the app doesn't allow different color schemes.
-      return RCTAppearanceColorSchemeLight;
-    }
-
-    appearance = appearance ?: [NSAppearance currentAppearance];
-    NSAppearanceName appearanceName = [appearance bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
-    return appearances[appearanceName] ?: RCTAppearanceColorSchemeLight;
+  static NSDictionary *appearances;
+  static dispatch_once_t onceToken;
+
+  dispatch_once(&onceToken, ^{
+    appearances = @{
+                    NSAppearanceNameAqua: RCTAppearanceColorSchemeLight,
+                    NSAppearanceNameDarkAqua: RCTAppearanceColorSchemeDark
+                    };
+  });
+
+  if (!sAppearancePreferenceEnabled) {
+    // Return the default if the app doesn't allow different color schemes.
+    return RCTAppearanceColorSchemeLight;
   }
 
-  // Default to light on older OS version - same behavior as Android.
-  return RCTAppearanceColorSchemeLight;
+  appearance = appearance ?: [NSAppearance currentAppearance];
+  NSAppearanceName appearanceName = [appearance bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
+  return appearances[appearanceName] ?: RCTAppearanceColorSchemeLight;
 }
 #endif // ]TODO(macOS GH#774)
 
@@ -165,7 +160,7 @@ - (void)appearanceChanged:(NSNotification *)notification
 
 - (void)startObserving
 {
-  if (@available(macOS 10.14, iOS 13.0, *)) { // TODO(macOS GH#774)
+  if (@available(iOS 13.0, *)) {
     [[NSNotificationCenter defaultCenter] addObserver:self
                                              selector:@selector(appearanceChanged:)
                                                  name:RCTUserInterfaceStyleDidChangeNotification
@@ -175,7 +170,7 @@ - (void)startObserving
 
 - (void)stopObserving
 {
-  if (@available(macOS 10.14, iOS 13.0, *)) { // TODO(macOS GH#774)
+  if (@available(iOS 13.0, *)) {
     [[NSNotificationCenter defaultCenter] removeObserver:self];
   }
 }

packages/rn-tester/RNTesterUnitTests/RCTConvert_NSColorTests.m

@@ -55,18 +55,14 @@ - (void)testAlternatingColorEven
 {
   id json = RCTJSONParse(@"{ \"semantic\": \"alternatingContentBackgroundColorEven\" }", nil);
   NSColor *value = [RCTConvert UIColor:json];
-  if (@available(macOS 10.14, *)) {
-    XCTAssertEqualObjects(value, [NSColor alternatingContentBackgroundColors][0]);
-  }
+  XCTAssertEqualObjects(value, [NSColor alternatingContentBackgroundColors][0]);
 }
 
 - (void)testAlternatingColorOdd
 {
   id json = RCTJSONParse(@"{ \"semantic\": \"alternatingContentBackgroundColorOdd\" }", nil);
   NSColor *value = [RCTConvert UIColor:json];
-  if (@available(macOS 10.14, *)) {
-    XCTAssertEqualObjects(value, [NSColor alternatingContentBackgroundColors][1]);
-  }
+  XCTAssertEqualObjects(value, [NSColor alternatingContentBackgroundColors][1]);
 }
 
 - (void)testAlternatingColorFallbackEven
@@ -99,14 +95,12 @@ - (void)testDynamicColor
   XCTAssertEqual(b, 0);
   XCTAssertEqual(a, 0);
 
-  if (@available(macOS 10.14, *)) {
-    [NSAppearance setCurrentAppearance:[NSAppearance appearanceNamed:NSAppearanceNameDarkAqua]];
-    [value getRed:&r green:&g blue:&b alpha:&a];
-    XCTAssertEqual(r, 1);
-    XCTAssertEqual(g, 1);
-    XCTAssertEqual(b, 1);
-    XCTAssertEqual(a, 0);
-  }
+  [NSAppearance setCurrentAppearance:[NSAppearance appearanceNamed:NSAppearanceNameDarkAqua]];
+  [value getRed:&r green:&g blue:&b alpha:&a];
+  XCTAssertEqual(r, 1);
+  XCTAssertEqual(g, 1);
+  XCTAssertEqual(b, 1);
+  XCTAssertEqual(a, 0);
 
   [NSAppearance setCurrentAppearance:nil];
 }
@@ -127,15 +121,13 @@ - (void)testCompositeDynamicColor
   XCTAssertEqual(b1, b2);
   XCTAssertEqual(a1, a2);
 
-  if (@available(macOS 10.14, *)) {
-    [NSAppearance setCurrentAppearance:[NSAppearance appearanceNamed:NSAppearanceNameDarkAqua]];
-    [[value colorUsingColorSpaceName:NSCalibratedRGBColorSpace] getRed:&r1 green:&g1 blue:&b1 alpha:&a1];
-    [[[NSColor systemBlueColor] colorUsingColorSpaceName:NSCalibratedRGBColorSpace] getRed:&r2 green:&g2 blue:&b2 alpha:&a2];
-    XCTAssertEqual(r1, r2);
-    XCTAssertEqual(g1, g2);
-    XCTAssertEqual(b1, b2);
-    XCTAssertEqual(a1, a2);
-  }
+  [NSAppearance setCurrentAppearance:[NSAppearance appearanceNamed:NSAppearanceNameDarkAqua]];
+  [[value colorUsingColorSpaceName:NSCalibratedRGBColorSpace] getRed:&r1 green:&g1 blue:&b1 alpha:&a1];
+  [[[NSColor systemBlueColor] colorUsingColorSpaceName:NSCalibratedRGBColorSpace] getRed:&r2 green:&g2 blue:&b2 alpha:&a2];
+  XCTAssertEqual(r1, r2);
+  XCTAssertEqual(g1, g2);
+  XCTAssertEqual(b1, b2);
+  XCTAssertEqual(a1, a2);
 
   [NSAppearance setCurrentAppearance:nil];
 }