fastify-dx
                                
                                
                                
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                        How to run code on the server
Prerequisites
- [X] I have written a descriptive issue title
 - [X] I have searched existing issues to ensure the issue has not already been raised
 
Issue
I'm playing around with this library to figure out how I would create something that I would normally use a SPA for.
Example
- a Web UI with an HTTP API which the client invokes, runs something on the server and returns some results
 - let's also assume that what runs on the server cannot run on the client (e.g. a Node-only library which doesn't make sense running on the client)
 
What I did
- created a "API" module containing the code I would normally have in my backend API (let's say it's some Node.js code, e.g. DB access)
 - created a new page which imports the API module
 - set the page as server-only so that my API code doesn't run on the client
 - use the API module in the 
getDataexport of the page module 
Issues I encountered
- Vite cannot build the app because the API module cannot be built on the client (although the page where I use such code is set a serverOnly)
 - Even assuming the API module code successfully builds on the client, how do I make it run on the server only, e.g. if it needs client inputs to run?