Running

In one terminal:

$ bb shadow-dev

In another terminal:

$ bb expo-start

Then in the expo terminal, type "i" to launch it in the simulator.

Note: disable fast-refresh in the expo dev menu in the app.

See also

• https://github.com/lilactown/helix/blob/master/docs/react-native.md

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How the expo dir was created:

$ npx create-expo-app my-app
$ mv my-app expo
$ rm expo/App.js

Then we edited expo/app.json to set {"entryPoint": "./target/index.js"}.