Updating .jsx files using anvil

I am using anvil instead of foreman to run my react-on-rails project. The Hello World works, but if I try to change anything in the .jsx files, I do not see the updates in my browser. For example instead of Hello, {this.props.name}, I tried to change it to Goodbye, {this.props.name}. I do not see this on the browser after restarting anvil and refreshing.

I’ve never used Anvil. Consider posting a very simple version of the basic Tutorial that uses Anvil.