how to debug the message queue traffic in React Native

bridgeSpy.js

import MessageQueue, { TO_JS } from 'react-native/Libraries/BatchedBridge/MessageQueue.js';

const handleCallsToJS = (info) => {
  // ...
};
const handleCallsToNative = (info) => {
  // ...
};

const spyFunction = (info) => {
  if (info.type === TO_JS) {
    handleCallsToJS(info);
  } else {
    handleCallsToNative(info);
  }
};

export const enableSpy = () => {
  MessageQueue.spy(spyFunction);
};