How do I access the request from inside _app.tsx?

[czottmann]

I want to customize the contents of the page's <head/> by setting a URL query — basically, I want to add a simple feature flag based on a GET parameter. I'm stuck because in my _app.tsx the component only expects AppProps and I don't know how to tie a custom handler into a mix to access the request from here:

/** @jsx h */
/** @jsxFrag Fragment */
import { Fragment, h } from "preact";
import { AppProps } from "$fresh/server.ts";

export default function App(props: AppProps) {
  // …

So, how can I get the current request from inside the _app.tsx? I know that I can call props.Component() and while technically it works, TS tells me that's a no-no.

Any pointers would be appreciated. TIA!