This is a prototype of a trpc-like rpc system that works exactly for a brownfield next.js 14 page router project.
The project had strict:false configured from day one and that prevented it from adopting trpc which requires strict:true. Hence the reason for the prototype.
It captured the essence of trpc without the advances stuff.
https://nextjs.org/docs/14/pages/building-your-application/routing/api-routes