Nextjs app router: state is reset each request

[gussmith23]

Love the package! Once I got it working, it's a very clean way of doing SSE.

I followed your example for NextJS with the App Router and found that it didn't work as the state I wanted persisted (namely, the Channel) wasn't being kept around. I'm not sure how NextJS works internally, so I have to assume this is expected (though not expected to a newbie) behavior.

I got around it with:

let channel: Channel;

// This fixes the issue of channel being reset on every request. I don't
// know how to do this more reasonably.
// https://github.com/vercel/next.js/discussions/48427#discussioncomment-10550280
if (process.env.NODE_ENV === "production") {
  channel = new Channel();
} else {
  // @ts-ignore
  if (!(global).channel) {
    // @ts-ignore
    global.channel = new Channel();
  }
  // @ts-ignore
  channel = global.channel;
}

Is this a known issue/pattern? Should this be documented in the examples, or is there a cleaner way around this on my side?