[🐛⚠️] iOS Build Fails - Value of optional type '?' must be unwrapped to refer to member 'storage' of wrapped base type 'any StorageProvider' (Optional Chaining)

[victoriomolina]

Scenario

Last week I was able to compile my project (Expo EAS Build) without errors.

Today, without modifying anything (didn't upgrade any dependency), I have started getting this error on my iOS AdHoc compilation:

Run Fastlane Errors

Copying   @react-native-firebase/storage ../../../Users/expo/Library/Developer/Xcode/DerivedData/Advice-dzlzwedukqkcvxgkbpzvxdpjkyli/Build/Intermediates.noindex/ArchiveIntermediates/Advice/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/FirebaseStorage.framework/Headers/FirebaseStorage-umbrella.h ➜ ios/Pods/Target/ Support/ Files/FirebaseStorage/FirebaseStorage-umbrella.h

› Copying   @react-native-firebase/storage ../../../Users/expo/Library/Developer/Xcode/DerivedData/Advice-dzlzwedukqkcvxgkbpzvxdpjkyli/Build/Intermediates.noindex/ArchiveIntermediates/Advice/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/FirebaseStorage.framework/Headers/FIRStorageTypedefs.h ➜ ios/Pods/FirebaseStorage/FirebaseStorage/Typedefs/FIRStorageTypedefs.h

❌  (/Users/expo/workingdir/build/packages/app/ios/Pods/FirebaseStorage/FirebaseStorage/Sources/Storage.swift:73:12)

  71 |     let provider = ComponentType<StorageProvider>.instance(for: StorageProvider.self,
  72 |                                                            in: app.container)
> 73 |     return provider.storage(for: Storage.bucket(for: app))
     |            ^ value of optional type '?' must be unwrapped to refer to member 'storage' of wrapped base type 'any StorageProvider'
  74 |   }
  75 | 
  76 |   /**

❌  (/Users/expo/workingdir/build/packages/app/ios/Pods/FirebaseStorage/FirebaseStorage/Sources/Storage.swift:88:12)

  86 |     let provider = ComponentType<StorageProvider>.instance(for: StorageProvider.self,
  87 |                                                            in: app.container)
> 88 |     return provider.storage(for: Storage.bucket(for: app, urlString: url))
     |            ^ value of optional type '?' must be unwrapped to refer to member 'storage' of wrapped base type 'any StorageProvider'
  89 |   }
  90 | 
  91 |   /**

❌  (/Users/expo/workingdir/build/packages/app/ios/Pods/FirebaseStorage/FirebaseStorage/Sources/Storage.swift:291:39)

  289 |   init(app: FirebaseApp, bucket: String) {
  290 |     self.app = app
> 291 |     auth = ComponentType<AuthInterop>.instance(for: AuthInterop.self,
      |                                       ^ cannot assign value of type '?' to type 'any AuthInterop'
  292 |                                                in: app.container)
  293 |     appCheck = ComponentType<AppCheckInterop>.instance(for: AppCheckInterop.self,
  294 |                                                        in: app.container)

❌  (/Users/expo/workingdir/build/packages/app/ios/Pods/FirebaseStorage/FirebaseStorage/Sources/Storage.swift:293:47)

  291 |     auth = ComponentType<AuthInterop>.instance(for: AuthInterop.self,
  292 |                                                in: app.container)
> 293 |     appCheck = ComponentType<AppCheckInterop>.instance(for: AppCheckInterop.self,
      |                                               ^ cannot assign value of type '?' to type 'any AppCheckInterop'
  294 |                                                        in: app.container)
  295 |     storageBucket = bucket
  296 |     host = "firebasestorage.googleapis.com"

Package Versions

Since I was using the following dependencies

    "@react-native-firebase/analytics": "^18.7.3",
    "@react-native-firebase/app": "^18.7.3",
    "@react-native-firebase/auth": "^18.7.3",
    "@react-native-firebase/firestore": "^18.7.3",
    "@react-native-firebase/functions": "^18.7.3",
    "@react-native-firebase/storage": "^18.7.3",

I decided to upgrade to the latest one @^19.0.0.

    "@react-native-firebase/analytics": "^19.0.0",
    "@react-native-firebase/app": "^19.0.0",
    "@react-native-firebase/auth": "^19.0.0",
    "@react-native-firebase/firestore": "^19.0.0",
    "@react-native-firebase/functions": "^19.0.0",
    "@react-native-firebase/storage": "^19.0.0",

I have also tried upgrading EAS with Expo 48, 49 and the latest release and images, with CocoaPods v1.15.2, and the error still persists.

Is anyone experiencing the same issue?

[geoffcfchen]

Yes. I just got exactly the same error today, while everything worked fine last week. I am using Expo 49 SDK. The following is a part of my package.json.

"dependencies": {
"@react-native-firebase/app": "^18.4.0",
"@react-native-firebase/auth": "^18.4.0",
"@react-native-firebase/firestore": "^18.4.0",
"@react-native-firebase/storage": "^18.4.0",
"expo": "~49.0.10",
"react": "18.2.0",
"react-native": "^0.72.6",
},
"devDependencies": {
"@babel/core": "^7.20.0"
},
"private": true
}

Given the error, "value of optional type '?' must be unwrapped to refer to member 'storage' of wrapped base type 'any StorageProvider", which indicates that the Swift compiler expects an optional value to be unwrapped before its properties or methods can be accessed, I think that it is more about the Firebase Storage SDK's internal handling of values than our project's code directly. I hope someone can help. Thanks

[victoriomolina]

Yep, it’s a minimal issue with nils handling. Hope it’s fixed soon 🥺 I downgraded the package too but nothing. Did you try @17.5.0? @geoffcfchen

Starting to think the issue itself is in the latest Google Firebase iOS SDK package and not directly in this wrapper for React Native (?).

[victoriomolina]

Yep, i assume its an already fixed issue in Firebase iOS sdk firebase/firebase-ios-sdk#12391

guard let provider = ComponentType<StorageProvider>.instance(for: StorageProvider.self,
                                                                 in: app.container) else {
      fatalError("No \(StorageProvider.self) instance found for Firebase app: \(app.name)")
    }
    return provider.storage(for: Storage.bucket(for: app, urlString: url))

@mikehardy @Salakar

[geoffcfchen]

@victoriomolina could you share how you solve this issue? Just reinstall react-native-firebase/storage? I am using expo EAS build right now and would appreciate it if you could share some advice. Thanks!

[geoffcfchen]

17.5.0

No I did not try 17.5.0...

[geoffcfchen]

Thanks for sharing the information. It seems to me that this problem is still not resolved. It was fine last week but now it can't work, so I think that there are some changes under the hood. I hope some one can point us in a direction...

Btw, how do you know it is related to firebase/firebase-ios-sdk#12391?

[victoriomolina]

@geoffcfchen take a look at the changes introduced on FirebaseStorage/Sources/Storage.swift in this commit:

firebase/firebase-ios-sdk@1ed6d66

That’s why I feel we need to update the firebase iOS sdk to a greater version than v10.21.0

[geoffcfchen]

I see.

Since I am working on the expo project, I only have the following packages in my package.json

"@react-native-firebase/app": "18.9.0",
"@react-native-firebase/auth": "18.9.0",
"@react-native-firebase/firestore": "18.9.0",
"@react-native-firebase/storage": "18.9.0",

and the following plugins in app.json.

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

But I think that we encountered the same issue. I don't think that we are the only one. Those who used the EAS build recently should also encounter the same issue...