Pointing a subdomain to Firebase functions

Question

I've got a website hosted on firebase www.example.com. I'd like to serve some functions in the same project from api.example.com.
Rewrites seem to only support directories and not subdomains though. Has anyone been able to accomplish this? Do I have to just use two different firebase projects?

Answer 1

Rewrites won't handle domain names directly. As you say, you can use a second project, and route calls to your API via your custom domain using Firebase Hosting integration with Cloud Functions .