Next.js 12.1: On-demand ISR, SWC support for styled-components, Relay, Jest

Huge release! Thank to the hard work and the team.

I'll try the On-demand ISR right away, almost waited one year. I have just updated my Next.js to version 12.1: https://github.com/ixartz/Next-js-Boilerplate

I didn't get any issue with the update, it's already an excellent news!

The ability to revalidate on demand is really powerful. I'm curious what the rational for adding it to the response object as opposed to an import from Next.js.

On-demand ISR of any sort is a big win for me. It seems right now `unstable_revalidate` can only take a single string suggesting one path at a time. I would love for this feature to accept an array of strings – or better yet – maybe a regex so I can rebuild entire branches of a sitemap.

Either way I have been loving Next.js since starting to use it again in version 11 after trying a few other alternatives over the years.

I built a fun demo of on-demand ISR: http://on-demand-isr.vercel.app

When a GitHub issue is created or commented on, a webhook is fired which calls `unstable_revalidate()`, revalidates the page, and purges the cache globally in ~300ms.

This is MASSIVE!! Kudos to the team on the release – on-demand ISR has been one of the most highly-requested features ever!!