Source

// Projects you joined from someone else that no longer take your time (the owner stopped sharing or
// removed you). Checked once per visit; pickers hide them and the Projects page says why.
import { useSyncExternalStore } from "react";

let status = new Map<string, "closed" | "removed">();
const listeners = new Set<() => void>();

export const joinedStatus = (id: string) => status.get(id);

export function setJoinedStatus(next: Map<string, "closed" | "removed">) {
  status = next;
  listeners.forEach((f) => f());
}

export function useJoinedStatus() {
  return useSyncExternalStore((cb) => { listeners.add(cb); return () => listeners.delete(cb); }, () => status);
}