Difficult upgrade

[RemMai]

I am using the Quasar framework.
Upgrading from V3 to V4 has been a bumpy journey, with either an error message in my tailwind.config.js function or a message in Git stating that there are files with changes in the staging area that have not been committed. Why?
Secondly, what could have been a pleasant use of 'apply' in every Vue file now requires referencing @reference under each tag. Is there a better solution?

[RemMai]

I hope to use Tailwindcss globally instead of using @reference import files in every Vue file

[RemMai]

Also,tailwind.config.js is generated based on npx tailwindcss init -p --full,But why is upgrading V4 so difficult?