How to do it...

In order to deploy your web app to the Firebase hosting platform, please take the following steps: 

1. Open a Terminal window and move it to your project folder.

2. Type the following command:

 flutter build web --web-renderer html

3. Open your browser and go to the Firebase console at the address https://console.firebase.google.com.
4. Create a new Firebase project (you can also use an existing one).

5. Download the Firebase CLI. You will find the link for your OS at https://firebase.google.com/docs/cli.
6. In your Terminal, type the following command:

 firebase login

7. From the browser window that asks for your login, confirm your credentials and allow the required permissions. At the end of the process, note the success message in your browser:

8. In your terminal, note the success message: ✔ Success! Logged in as [yourusername...