Getting error when building iOS app by using EAS (Expo Application Services)

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I am creating an Expo app, which I plan to publish to the app store. I have published it to the Android store so far. When I build the iOS app using EAS, I get this error, which is coming from Swift Pods, which is seemed to have been caused by Firebase.

Error: [!] The following Swift pods cannot yet be integrated as static libraries:

The Swift pod FirebaseCoreInternal depends upon GoogleUtilities, which does not define modules. To opt into those targets generating module maps (which is necessary to import them from Swift when building as static libraries), you may set use_modular_headers! globally in your Podfile, or specify :modular_headers => true for particular dependencies.

I honestly have no idea what this error even means, and how to fix it. Anyone here have an idea?

expo firebase react-native ios
1 Answers

I actually did find a solution to the problem. What you have to do is install an Expo package called expo-build-properties. From there, you include the package in the plugins section of your app.json file, along with some iOS setting. Here is a code sample:

"plugins": [
  "@react-native-firebase/app",
  [
   "expo-build-properties",
    {
     "ios": {
        "useFrameworks": "static"
      }
    }
  ]
]
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