Deploying Express (Node.js) backend server to Cloudflare

May I ask you any help or advise to deploy my Express backend server?
I do search from google, Cloudflare community and here, I can briefly understand that Cloudflare support JavaScript browser runtime environment instead of Node.js. Therefore, the only option to deploy my Express backend server is to refactor the code to other library such as Itty-router?
Is it possible to deploy in page function?
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