Just a helpful Next.js/Vercel protip for anyone who spent the last 48 hours perplexed by something very VERY trivial🙄 :
Vercel's new environment variable setup does not require quotations for some URL vars.
I began working with Supertokens early in the spring, and had a demo set up, running fine. I had my URL variables set, with quotes, using secrets only (how silly!). I recently ran some npm updates, and was stuck with a blank screen, no redirection to /auth, etc. -- had no idea what the issue was.
tl;dr; creating a fresh project and troubleshooting this issue got me back where I needed to be, ready for launch.
Hope this saves someone else a few headaches..
Also, much love to the Supertokens team! Glad to see the progress (and node.js support!) going on over the Summer.