Help setting up tsconfigs

I think I want to merge my worker with a pages application using functions. I've read the docs and i'm still not sure how to structure the app/ how it works. So _workers.ts needs to be compiled into dist? How do I set this up using the configs, I have three. tsconfig.json, tsconfig.node.json and tsconfig.app.json. I had a go myself but when building I get " error TS6200: Definitions of the following identifiers conflict with those in another file"