Cannot assign value of type 'RiveArtboard??' to type 'RiveArtboard?'

[07abhishekrock]

Description

Facing build error on latest @rive-app/react-native@0.4.6 version.
Cannot assign value of type 'RiveArtboard??' to type 'RiveArtboard?'
error in HybridRiveFile.swift:L57

Provide a Repro

1. Just did yarn install and then pod install
2. When building on xcode 26.3, faced this error.

Source .riv/.rev file

Expected behavior

The build should work normally.

Screenshots

Device & Versions (please complete the following information)

• Device: [e.g. Android Emulator, iOS Simulator] - iOS simulator iPhone 17
• OS: [e.g. Android SDK API Level 30, iOS 14.5] - iOS 26.3
• React Native Version: [Check your package.json or run npx react-native info e.g.: 0.79.2] 0.81.1
• Expo Version (if applicable): [Check your package.json or run npx expo-env-info | grep 'expo:' e.g.: ~54.0.0]
• @rive-app/react-native Version: [Check your package.json e.g.: 0.1.0] 0.4.6

Additional context

Adding the suggested fix by xcode to safe cast it worked and then the build worked fine along with all other features.

[mfazekas]

@07abhishekrock thanks much for the report, I wasn't able to reproduce the issue with Xcode 26.3. Do you have some special dependency? And it's a react-native 0.81.1 project without expo?! Nevertheless I've made a PR #256, ideally it should fix the issue, but it would be great to understand why do you see this issue.

[07abhishekrock]

yeah it is 0.81.1 without expo