Interact with Turbo native module from host apps / Register callback from the host app (iOS/Android)

[CatStudioApp]

Hello!

I defined this module:

export interface Spec extends TurboModule {
  multiply(a: number, b: number): number;

  registerCoreWebMessageCallback(callback: (data: string) => void): void;
}

But not sure how to invoke this callback from the host app.

On Android, MainActivity, if I write

 override fun emitHostNativeMessage(message: String) {
        val reactContext = this.reactInstanceManager.currentReactContext
        val rnCoreModule = reactContext?.getNativeModule(ReactNativeCoreModule::class.java) // this line will throw exception
        if (rnCoreModule != null) {
            rnCoreModule.webMessageCallback?.invoke(message)
        } else {
            Log.e("MainActivity", "emitHostNativeMessage: rnCoreModule is null")
        }
    }

On iOS, if I want to import the Turbo module pod C header, it will show error due to header search path, in AppDelegate.mm

Is there any good practice to allow the host to interact with the native interfaces of Turbo Native Modules.