Please consider introducing react fast refresh
This boilerplate is great. Thanks for the work.
Please consider introducing react fast refresh. React Fast Refresh will speed up the react development.
I second this. Would it be difficult to do this? I'm asking as I'd like to try and implement it myself.
@XuNeal and whoever else is interested. I was able to add React Fast Refresh. I followed the Prerequisites, Installation, and Usage sections of the readme.
Then I removed the use of alias from webpack.config.js and add react-refresh/babel to .babelrc.
Here's a gist of the changes I made.
When I ran the local server I got the following screen and was able to navigate to the newtab, options, panel, and popup pages.

Additional changes:
hot: true,
liveReload: false
utils/webserver.js to make it work.
I created a repo by create-react-app, so you can enjoy it. cra-crx-boilerplate
Done!