Configures the current project to target the selected platform.
                When you add a target platform, the NativeScript CLI creates a
                corresponding platform-specific subdirectory under the platforms
                directory. This platform-specific directory contains the
                necessary files to let you build your project for the target
                platform.
              
              
              
                
                  
                    | Usage | 
                    Synopsis | 
                  
                
                
                  
                    | Android latest runtime | 
                    
                      $ tns platform add android [--framework-path <File
                        Path>]
                     | 
                  
                  
                    | Android selected runtime | 
                    
                      $ tns platform add android[@<Version>]
                        [--framework-path <File Path>]
                     | 
                  
                  
                    | iOS latest runtime | 
                    
                      $ tns platform add ios [--framework-path <File
                        Path>]
                     | 
                  
                  
                    | iOS selected runtime | 
                    
                      $ tns platform add ios[@<Version>]
                        [--framework-path <File Path>]
                     | 
                  
                
              
              
              
                - 
                  
--framework-path - Sets the path to a
                  NativeScript runtime for the specified platform that you want
                  to use instead of the default runtime.
                  <File Path> must point to a valid npm
                  package.
                 
              
              
              
                - 
                  
<Version> is any available version of the
                  respective platform runtime published in npm. If
                  @<Version> is not specified, the
                  NativeScript CLI installs the latest stable runtime for the
                  selected platform. To list all available versions for Android,
                  run $ npm view tns-android versions To list only
                  experimental versions for Android, run
                  $ npm view tns-android dist-tags To list all
                  available versions for iOS, run
                  $ npm view tns-ios versions To list only
                  experimental versions for iOS, run
                  $ npm view tns-ios dist-tags
                 
              
              
              
                - 
                  You can run 
$ tns platform add ios only on macOS
                  systems.
                 
              
              
              
                
                  
                    | Command | 
                    Description | 
                  
                
                
                  
                    | install | 
                    
                      Installs all platforms and dependencies described in the
                      package.json file in the current directory.
                     | 
                  
                  
                    | platform remove | 
                    
                      Removes the selected platform from the platforms that the
                      project currently targets.
                     | 
                  
                  
                    | platform update | 
                    
                      Updates the NativeScript runtime for the specified
                      platform.
                     | 
                  
                  
                    | platform | 
                    
                      Lists all platforms that the project currently targets.
                     | 
                  
                  
                    | prepare | 
                    
                      Copies common and relevant platform-specific content from
                      the app directory to the subdirectory for the selected
                      target platform in the platforms directory.
                     |