Hmm.. Im also experiencing the same, only when running yarn build the js/css is created. I assume a configuration issue? about craft3-webpack5-tailwind2-boilerplate

[storybynumbers]

How did you get HMR working?

[funkysoul]

Like mentioned here:

Then install our other packages and run the HMR development server:

$ yarn install
$ yarn dev
(I use yarn for my project, but you don't need to - use the tool of your choice.)

Webpack assets are set up to serve from https://localhost:8080 by default.

Note: The URL "https://localhost:8080" won't show anything by default, but if you prefer to have a page load, you can edit wpconfig/webpack.dev.js and uncomment the new HtmlWebpackPlugin code block. This will generate an index.html file along with your assets.

[storybynumbers]

I followed those instructions, but all paths return the same "cannot load" error. Which makes sense to me, because the only files generated in the dist are manifest.json and stats.json. That commented out block generates an html file, but it's not a proper rendering of my homepage. The twig isn't processed. Am I missing something obvious here? (Thanks for the reply Tiago!)

[funkysoul]

Hmm.. when starting yarn dev do you see any errors?
Is the hmr url still localhost:8080? Is any other service running on that port? Did you check twigpack config? Is local SSL setup and active?
Just a couple of things that cause an issue ;)
(You welcome) ;)

[storybynumbers]

It seems the issues arise from using Docker/Nitro. Many other people are struggling with it as well.

[funkysoul]

ah, sorry I don't use any of that...