Next, we will look into the run option. This option allows us to run our application, and it provides us with an option to create a productive development environment by specifying the --watch option, which configures a watcher to detect changes in our source code and update our browser automatically. This cool feature is known as browser-sync or auto-refresh.
The run command also allows us to specify the environment where we want to execute our application; these are the default environments: dev, stage, and prod. By default, the CLI will run our application using the dev environment. Use the --env flag to change it.