HelloWorldPackage.java

// android/app/src/main/java/com/cppreactnative/helloworld/HelloWorldPackage.java
package com.cppreactnative.helloworld;

import com.facebook.react.ReactPackage;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.uimanager.ViewManager;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class HelloWorldPackage implements ReactPackage {

    @Override
    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
        return Collections.emptyList();
    }

    @Override
    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
        List<NativeModule> modules = new ArrayList<>();

        modules.add(new HelloWorldModule(reactContext)); //this is where we register our module, and any others we may later add

        return modules;
    }
}