In this project the index.html is registered as a PostCSS dependency:

result.messages.push({
  type: 'dependency',
  file: path.resolve(__dirname, 'index.html'),
  plugin: 'plugin',
  parent: result.opts.from,
})

Typically when editing the index.html file the browser window will automatically reload, but in this example it does not.

1. npm install
2. npm run dev
3. Edit index.html and notice that the browser window does not reload as expected