Configuration for multiple sites in one repo

I have a new website being managed with Workers in a new repo, and that works well.

oldsite.com/blog/some-old-slug
newsite.com/news/a-new-slug-format (301 permanent)

What I would like to do is manage the redirects for the old domain in the same repo if possible. So, one wrangler config would handle deploying newsite.com and the various JS for a single page app. Another wrangler to deploy code for oldsite.com which would basically be some redirects. Is this possible to do? Both websites/domains would be managed under one main Cloudflare account.

You can use page rule forwarding feature for such wildcard redirection. Please search about it.