Firebase/Firestore for backend of a twitch extension - not supported by CSP?

Does anyone know if this is possible/supported?

If not is there a workaround?

So, I guess I should just read the documentation better. It’s enough to just add the firebase URLs to the allow list when creating a version (Allowlist for URL Fetching Domains). That’s enough for the extension to use firestore, at least in Hosted Testing. I guess we will see if this will pass the review.