Test.jsx

import React from 'react';
import { 
  View, 
  TouchableOpacity, 
  Text, 
  NativeModules 
} from "react-native";

const Test = props => {
  
  const fail = () => {
    // NativeModules exposes our package!
    // Our package exposes our @ReacMethod annotated methods!
    NativeModules.ImmersiveMode.fail();
  }
  
  return (
    <View style={{ flex: 1 }}>
      <TouchableOpacity 
        style={{ backgroundColor: "red", width: 100, height: 50}} 
        onPress={fail}>
        <Text>Fail</Text>
      </TouchableOpacity>
    </View>
  );
};

export default Test;