How to integrate flutter web build inside react app for specific route?

To integrate a Flutter web build inside a React app for a specific route, you can follow these steps:

Put your Flutter app build files inside the /public folder of your React app.

In the component that corresponds to the specific route where you want to run the Flutter app, add the following code to load the Flutter app:

function loadMainDartJs() {
    var scriptTag = document.createElement('script');
    scriptTag.src = './main.dart.js';
    scriptTag.type = 'application/javascript';
    document.getElementById('flutterPreview').append(scriptTag);
}

loadMainDartJs();

Replace 'flutterPreview' with the ID of the element in your React component where you want to render the Flutter app.

This code dynamically creates a script tag and sets its source to the Flutter app's main.dart.js file. It then appends the script tag to the specified element, which will load and execute the Flutter app.

Make sure to adjust the paths and IDs according to your project's structure and requirements.

Additionally, you mentioned using the browser's communication channel to pass data between the React and Flutter apps. You can achieve this by utilizing methods like postMessage or using a shared data store like Redux or a state management library like MobX.

Remember that Flutter for web is still in beta and may have limitations and browser compatibility issues. It's recommended to thoroughly test your integration and consider the stability and community support of Flutter for web before using it in production.