best way to route within subfolder.

[meodai]

I am running different API's on the same URL. (With separate codebases)

for now my "color-names" api is running here: https://api.color.pizza/v1/

In the future I want to have:

https://api.color.pizza/names/v1/  <- current codebase (vanilla JS)
& 
https://api.color.pizza/palettes/v1/ <- new API built around Koa

I want to avoid having to add palettes/v1/ as a prefix to every route. Is it possible to solve that nicely using the "host" feature?
Also how would I still be able to be using it on localhost?

const router = new Router({
  host: /^(.*\.)?color\.pizza\/palettes\/v1/
})

[jonathanong]

you can use koa-mount for this