ScreenCornerRadius crashes at import on iOS simulator: "Cannot read property 'cornerRadius' of null"

Summary

Importing ScreenCornerRadius crashes the app on the iOS simulator with:

TypeError: Cannot read property 'cornerRadius' of null

The crash happens at module-load time, so it takes down the whole app rather than degrading gracefully.

Root cause

In src/index.tsx:

export const ScreenCornerRadius =
  NativeModules.ScreenCornerRadius.cornerRadius ?? 0;

The ?? 0 only guards .cornerRadius being null/undefined — it does not guard NativeModules.ScreenCornerRadius itself being null. When the native module isn't available (iOS simulator, or module not registered), NativeModules.ScreenCornerRadius is null, so accessing .cornerRadius throws before the ?? 0 fallback can apply.

Steps to reproduce

1. Add react-native-screen-corner-radius to an app.
2. import { ScreenCornerRadius } from 'react-native-screen-corner-radius'.
3. Run on an iOS simulator.
4. App crashes on load.

Expected behavior

When the native module is unavailable, ScreenCornerRadius should fall back to 0 (and IsScreenRounded to false) rather than throwing.

Suggested fix

Optional-chain the module access too:

export const ScreenCornerRadius =
  NativeModules.ScreenCornerRadius?.cornerRadius ?? 0;

Environment

• react-native-screen-corner-radius: 0.2.3
• react-native: 0.83.2
• Platform: iOS simulator

Start in src/index.tsx at the ScreenCornerRadius export and inspect the related IsScreenRounded value. Reproduce the import on an iOS simulator where NativeModules.ScreenCornerRadius is unavailable, then verify that both exports use their documented fallback values without a module-load crash.