add --swift language option

lib/cli-command.js

@@ -100,6 +100,9 @@ ${postCreateInstructions(createOptions)}`);
     command: '--platforms <platforms>',
     description: 'Platforms the library module will be created for - comma separated',
     default: 'ios,android',
+  }, {
+    command: '--swift',
+    description: 'EXPERIMENAL: Generate the iOS native module in Swift',
   }, {
     command: '--tvos-enabled',
     description: 'Generate the module with tvOS build enabled (requires react-native-tvos fork, with minimum version of 0.60, and iOS platform to be enabled)',

lib/lib.js

@@ -80,6 +80,7 @@ const generateWithNormalizedOptions = ({
   authorEmail = DEFAULT_AUTHOR_EMAIL,
   license = DEFAULT_LICENSE,
   isView = false,
+  swift = false,
   useAppleNetworking = false,
   generateExample = DEFAULT_GENERATE_EXAMPLE,
   exampleFileLinkage = false,
@@ -109,6 +110,7 @@ const generateWithNormalizedOptions = ({
            object class name: ${objectClassName}
      Android nativePackageId: ${nativePackageId}
                    platforms: ${platforms}
+             use swift [iOS]: ${swift}
            Apple tvosEnabled: ${tvosEnabled}
                   authorName: ${authorName}
                  authorEmail: ${authorEmail}
@@ -170,6 +172,7 @@ const generateWithNormalizedOptions = ({
           authorEmail,
           license,
           isView,
+          swift,
           useAppleNetworking,
         };
 

templates/ios.js

@@ -33,8 +33,8 @@ end
 
 `,
 }, {
-  // header for module without view:
-  name: ({ objectClassName, isView }) => !isView && `${platform}/${objectClassName}.h`,
+  // header for Objective-C module without view:
+  name: ({ objectClassName, swift, isView }) => !swift && !isView && `${platform}/${objectClassName}.h`,
   content: ({ objectClassName }) => `// ${objectClassName}.h
 
 #import <React/RCTBridgeModule.h>
@@ -45,7 +45,7 @@ end
 `,
 }, {
   // implementation of module without view:
-  name: ({ objectClassName, isView }) => !isView && `${platform}/${objectClassName}.m`,
+  name: ({ objectClassName, swift, isView }) => !swift && !isView && `${platform}/${objectClassName}.m`,
   content: ({ objectClassName, useAppleNetworking }) => `// ${objectClassName}.m
 
 #import "${objectClassName}.h"
@@ -77,6 +77,41 @@ RCT_EXPORT_METHOD(sampleMethod:(NSString *)stringArgument numberParameter:(nonnu
 
 @end
 `,
+}, {
+  // bridge header for Swift module without view:
+  name: ({ objectClassName, swift, view }) => swift && !view && `${platform}/${objectClassName}-Bridging-Header.h`,
+  content: ({ objectClassName }) => `// ${platform}/${objectClassName}-Bridging-Header.h
+#import <React/RCTBridgeModule.h>
+`,
+}, {
+  // bridge for Swift module without view:
+  name: ({ objectClassName, swift, view }) => swift && !view && `${platform}/${objectClassName}.m`,
+  content: ({ objectClassName, useAppleNetworking }) => `// ${objectClassName}.m
+
+#import <React/RCTBridge.h>
+
+@interface RCT_EXTERN_MODULE(${objectClassName}, NSObject)
+
+RCT_EXTERN_METHOD(sampleMethod:(NSString *)stringArgument numberParameter:(nonnull NSNumber *)numberArgument callback:(RCTResponseSenderBlock)callback)
+
+@end
+`,
+}, {
+  // implementation of Swift module without view:
+  name: ({ objectClassName, swift, view }) => swift && !view && `${platform}/${objectClassName}.swift`,
+  content: ({ objectClassName, useAppleNetworking }) => `// ${objectClassName}.swift
+
+import Foundation
+
+@objc(${objectClassName})
+class ${objectClassName} : NSObject {
+  @objc(sampleMethod:numberParameter:callback:)
+  func sampleMethod(stringArgument: String, numberArgument: NSNumber, callback: RCTResponseSenderBlock) -> Void {
+    // TODO: Implement some actually useful functionality
+    callback([String(format: "numberArgument: %@ stringArgument: %@", numberArgument, stringArgument)])
+  }
+}
+`
 }, {
   // header for module with view:
   name: ({ objectClassName, isView }) => isView && `${platform}/${objectClassName}.h`,

tests/integration/cli/help/__snapshots__/cli-help.test.js.snap

@@ -12,6 +12,7 @@ Options:
   --object-class-name [objectClassName]                         The name of the object class to be exported by both JavaScript and native code. Default: (name in PascalCase)
   --native-package-id [nativePackageId]                         [Android] The native Java package identifier used for Android (default: \\"com.reactlibrary\\")
   --platforms <platforms>                                       Platforms the library module will be created for - comma separated (default: \\"ios,android\\")
+  --swift                                                       EXPERIMENAL: Generate the iOS native module in Swift
   --tvos-enabled                                                Generate the module with tvOS build enabled (requires react-native-tvos fork, with minimum version of 0.60, and iOS platform to be enabled)
   --github-account [githubAccount]                              The github account where the library module is hosted (default: \\"github_account\\")
   --author-name [authorName]                                    The author's name (default: \\"Your Name\\")

tests/integration/cli/noargs/__snapshots__/cli-noargs.test.js.snap

@@ -12,6 +12,7 @@ Options:
   --object-class-name [objectClassName]                         The name of the object class to be exported by both JavaScript and native code. Default: (name in PascalCase)
   --native-package-id [nativePackageId]                         [Android] The native Java package identifier used for Android (default: \\"com.reactlibrary\\")
   --platforms <platforms>                                       Platforms the library module will be created for - comma separated (default: \\"ios,android\\")
+  --swift                                                       EXPERIMENAL: Generate the iOS native module in Swift
   --tvos-enabled                                                Generate the module with tvOS build enabled (requires react-native-tvos fork, with minimum version of 0.60, and iOS platform to be enabled)
   --github-account [githubAccount]                              The github account where the library module is hosted (default: \\"github_account\\")
   --author-name [authorName]                                    The author's name (default: \\"Your Name\\")

tests/with-injection/cli/command/object/__snapshots__/lib-cli-command-object-text.test.js.snap

@@ -28,6 +28,10 @@ Object {
       "default": "ios,android",
       "description": "Platforms the library module will be created for - comma separated",
     },
+    Object {
+      "command": "--swift",
+      "description": "EXPERIMENAL: Generate the iOS native module in Swift",
+    },
     Object {
       "command": "--tvos-enabled",
       "description": "Generate the module with tvOS build enabled (requires react-native-tvos fork, with minimum version of 0.60, and iOS platform to be enabled)",