What's new in Vue 3 that I care about

By now Vue 3 isn't new any more at v3.3. I've also been absent (taking longer?) writing front-end code, and play catch-up more often than I like. Here are some of the salient differences I learnt/remembered bringing back the site up again:

1. script setup does a LOT
   I thought it was just some initiailization syntatic sugar for the component. Turns out it does so much it reduces a lot of the old Vue scripting for simple components. Things like how variables declared automatically become accessible in the template section.
2. Composables replacing mixins
   Still learning the ropes, but it's looking cozy for me adopting this new way of reusing libraries. I should learn more about the differences.

What I learnt about Nuxt

The latest Nuxt (v3.6) is pretty good. I like the Vite engine; how it seems to start up faster. It's not perfect though:

1. Debugging Static Site Generation (SSG)
   When the compile breaks, the stock compiler (npm run generate) just shows Error 500. Easy enough to debug: just put try-catch blocks where you think the problem is. Still, it's a bother.
2. Built-in Markdown compile Prose looks buggy
   Even though I put <> tags inside a code block e.g. <script> Nuxt/Prose will want to parse/execute it as an embedded HTML element.