• Runs a MiniApp on an iOS emulator or connected device


ern run-ios


--baseComposite <compositePath>

  • Git or File System path, to the custom Composite repository (refer to the [custom Composite] documentation for more information).

    --dev [true|false]

    • Enable or disable React Native dev support


    • One or more MiniApps to combine in the Runner Container

    --dependencies, --deps

    • One or more native dependencies to add to the Runner Container

    --descriptor, -d

    • complete native application descriptor


    • Name of the MiniApp to launch when starting the Runner application


    • Use the previously selected device to avoid prompt


  • Host or ip to launch the local packager on.

  • By default it will use the IP address that is returned by the ipconfig getifaddr en0 command, and fallback to localhost in the case the command fails.


  • Port on which the local packager should listen on (default: 8081)


  • You can launch the MiniApp located in the current working directory or on a connected iOS device or running emulator if available. If a connected iOS device is not available, the command prompts you to select an emulator to launch from the list of installed emulator images.

  • The first time you run this command from within a MiniApp directory, it generates an iOS directory containing the iOS Runner application project. If the iOS folder already exists (it is not the first run of the ern run-ios command for this MiniApp), the existing runner project is used.

  • After the runner project is generated, you can safely make native code modifications to it, knowing that the next time the ern run-ios command is issued, the project and your changes will remain.

  • If you want to regenerate the runner project from scratch, remove the iOS directory.

  • The miniapp can be any Yarn package descriptor, including Git or other file system path schemes.

  • The ern run-ios command is the ern equivalent of the react-native run-ios command.

[custom Composite]: ./platform-parts/composite/

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