expoClient，This is the source code for the Expo client app used to view experiences published to the Expo service. Most people will not need to build the Expo clients from source.
If you want to build a standalone app that has a custom icon and name, see our documentation here. You're in the wrong place, you shouldn't need to build the Expo clients from source.
If you need to make native code changes to your Expo project, such as adding custom native modules, we can generate a native project for you. You're in the wrong place, you shouldn't need to build the Expo clients from source.
