chore(ios): fix swift debugging in example by implementing main in swift (#3310)

Author: mfazekas

example/ios/RNMapboxGLExample.xcodeproj/project.pbxproj

@@ -12,6 +12,7 @@
 		13B07FC11A68108700A75B9A /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 13B07FB71A68108700A75B9A /* main.m */; };
 		51C0260825301F99008C5283 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 51C0260725301F99008C5283 /* LaunchScreen.storyboard */; };
 		6ABB4B94377E61C4A5D7C20B /* libPods-RNMapboxGLExample.a in Frameworks */ = {isa = PBXBuildFile; fileRef = B3043593E8F1F7D43624CAB9 /* libPods-RNMapboxGLExample.a */; };
+		D8E751FC2B4D755200FEFCF7 /* DebugWorkaround.swift in Sources */ = {isa = PBXBuildFile; fileRef = D8E751FB2B4D755200FEFCF7 /* DebugWorkaround.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -41,6 +42,7 @@
 		CB1F3BED505C4EDE92AC1770 /* FontAwesome.ttf */ = {isa = PBXFileReference; explicitFileType = undefined; fileEncoding = 9; includeInIndex = 0; lastKnownFileType = unknown; name = FontAwesome.ttf; path = "../node_modules/react-native-vector-icons/Fonts/FontAwesome.ttf"; sourceTree = "<group>"; };
 		CC44ECBD0B2A438C84D89432 /* Ionicons.ttf */ = {isa = PBXFileReference; explicitFileType = undefined; fileEncoding = 9; includeInIndex = 0; lastKnownFileType = unknown; name = Ionicons.ttf; path = "../node_modules/react-native-vector-icons/Fonts/Ionicons.ttf"; sourceTree = "<group>"; };
 		D21EDDEE520265816231288F /* Pods-RNMapboxGLExample.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RNMapboxGLExample.debug.xcconfig"; path = "Target Support Files/Pods-RNMapboxGLExample/Pods-RNMapboxGLExample.debug.xcconfig"; sourceTree = "<group>"; };
+		D8E751FB2B4D755200FEFCF7 /* DebugWorkaround.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = DebugWorkaround.swift; path = RNMapboxGLExample/DebugWorkaround.swift; sourceTree = "<group>"; };
 		E164F01DAD324AE386612513 /* EvilIcons.ttf */ = {isa = PBXFileReference; explicitFileType = undefined; fileEncoding = 9; includeInIndex = 0; lastKnownFileType = unknown; name = EvilIcons.ttf; path = "../node_modules/react-native-vector-icons/Fonts/EvilIcons.ttf"; sourceTree = "<group>"; };
 		ED297162215061F000B7C4FE /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = System/Library/Frameworks/JavaScriptCore.framework; sourceTree = SDKROOT; };
 		ED2971642150620600B7C4FE /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS12.0.sdk/System/Library/Frameworks/JavaScriptCore.framework; sourceTree = DEVELOPER_DIR; };
@@ -87,6 +89,7 @@
 				13B07FB51A68108700A75B9A /* Images.xcassets */,
 				13B07FB61A68108700A75B9A /* Info.plist */,
 				13B07FB71A68108700A75B9A /* main.m */,
+				D8E751FB2B4D755200FEFCF7 /* DebugWorkaround.swift */,
 			);
 			name = RNMapboxGLExample;
 			sourceTree = "<group>";
@@ -380,6 +383,7 @@
 			files = (
 				13B07FBC1A68108700A75B9A /* AppDelegate.mm in Sources */,
 				13B07FC11A68108700A75B9A /* main.m in Sources */,
+				D8E751FC2B4D755200FEFCF7 /* DebugWorkaround.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -392,6 +396,7 @@
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = 1;
 				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = arm64;
 				GCC_PREPROCESSOR_DEFINITIONS = (
@@ -452,6 +457,8 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = RNMapboxGLExample;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Debug;
@@ -462,6 +469,7 @@
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = 1;
 				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = arm64;
 				INFOPLIST_FILE = RNMapboxGLExample/Info.plist;
@@ -511,6 +519,7 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = RNMapboxGLExample;
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Release;
@@ -520,7 +529,7 @@
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
@@ -584,7 +593,7 @@
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;

example/ios/RNMapboxGLExample/DebugWorkaround.swift

@@ -0,0 +1,3 @@
+// see https://github.com/rnmapbox/maps/pull/3310
+
+import Foundation