How long is the v4 upgrade tool?

[PlugNPush]

Hi,

I have got my hands on an old project and I am trying to update its dependencies. One of which is tailwind V3. The documentation talks about running an upgrade tool, but it has been over half an hour, zero files have been modified according to git and I am still waiting... Is this normal? How long should I wait?

npx @tailwindcss/upgrade --force
≈ tailwindcss v4.0.14

│ Searching for CSS files in the current directory and its subdirectories… 

│ ↳ Linked `./tailwind.config.ts` to `./src/app.css` 

│ Migrating JavaScript configuration files… 

[wongjn]

No, that's not normal. It should only take a few minutes. Do you have a lot of files in the project?

[PlugNPush]

After 45 minutes, it completed. Though, I am very confused with the @taliwindcss/vite package. If I install the latest version (4.0.14), it completely hangs. I can see that the request arrives in the console and loads up, but it never responds anything. If I install @tailwindcss/vite@next (4.0.0), it works perfectly with almost no wait... I am using Svelte and Vite.