How can I create a windows proxy via nodejs?

I'm trying to make a proxy that I can apply in windows proxy settings to translate spanish to english. I can handle this part on my own, my only issue is actually building the proxy.

I'm looking for a way to create a proxy via at best express, and at worst net.

I have wrote this code here:

const app = require("express")();

app.get("/", (req,res)=>{
    res.send("hello")
})

app.listen(6060)

Then, I modify my proxy settings in windows to 127.0.0.1:6060. When I go to any sites, I expect to get hello, but I just get the normal response.

Finally, I would like to be able to get the request url, e.g. google.com